Carrier 62X Installation Instructions Manual PDF
Summary of Content for Carrier 62X Installation Instructions Manual PDF
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations. Catalog No. 04-53620025-01 Printed in U.S.A. Form 62X-4SI Pg 1 6-21 Replaces: 62X-3SI
Installation Instructions
CONTENTS Page
SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 2 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 PRE-INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Step 1 Check Jobsite . . . . . . . . . . . . . . . . . . . . . . . 3 INSTALLATION GUIDELINES (ALL UNITS) Step 2 Check Unit . . . . . . . . . . . . . . . . . . . . . . . . . . 3 INSPECT UNIT Step 3 Provide Unit Support . . . . . . . . . . . . . . . . . 3 ROOF CURB Step 4 Rig and Place Unit . . . . . . . . . . . . . . . . . . . 4 POSITIONING ROOF MOUNT SLAB MOUNT INSTALLATION ONTO CURB Step 5 Field Fabricate Ductwork . . . . . . . . . . . . . 28 Step 6 Make Unit Duct Connections . . . . . . . . . . 28 VERTICAL SUPPLY/RETURN CONNECTIONS HORIZONTAL SUPPLY CONNECTIONS Step 7 Install External Trap for Evaporator
Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . 28 Step 8 Install Gas Piping (Gas Heat Units Only) . 28 A, B, C, CL, AND D CABINETS BXL, CXL, DXL CABINETS GAS HEAT SAFETY CONTROLS Step 9 Install Gas Heat Condensate Drain . . . . . 30 Step 10 Install Hot Water (Hot Water Units Only) . 30 HOT WATER COIL PIPE ROUTING HOT WATER HEATING CONTROL Step 11 Make Electrical Connections . . . . . . . . . 30 FIELD POWER SUPPLY SENSOR WIRING Step 12 Open Exhaust Damper (Units with Optional
Exhaust or Energy Conservation Wheel Only) . 32 Step 13 Install all Accessories . . . . . . . . . . . . . . 32 Step 14 Configure Controls . . . . . . . . . . . . . . . . . 32 SEQUENCE OF OPERATION OCCUPIED MODE STAGED HEAT (ELECTRIC HEAT) 2-STAGE HEAT
STAGED HEAT (ELECTRIC HEAT) 4-STAGE HEAT STAGED HEAT (GAS HEATER) 2-STAGE STAGED HEAT (GAS HEATER) 4-STAGE MODULATED HEAT UNOCCUPIED MODE SAFETY SHUTDOWN REFRIGERANT CHARGING Step 15 Unit Start-Up . . . . . . . . . . . . . . . . . . . . . .35 Step 16 Test Mode and Fan Balancing . . . . . . . .35 Typical Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . .35 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Installation Code and Quarterly Inspections . . . . . .52 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 QUARTERLY Unit Exterior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 CABINET EXTERIOR UNIT LOCATION Direct Drive Supply and Exhaust Fans . . . . . . . . . .52 BLOWER WHEEL MOTORS Condensing Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 Refrigeration Circuit Components . . . . . . . . . . . . . .52 EVAPORATOR COIL CONDENSER COIL COMPRESSORS Condensate Drain Pan and Drain . . . . . . . . . . . . . . .52 Dampers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52 DAMPERS DAMPER MOTOR/LINKAGES Energy Conservation Wheel . . . . . . . . . . . . . . . . . . .52 BEARINGS DRIVE MOTOR DRIVE BELTS SEALS WHEEL Gas Heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 GAS LINE MANUAL SAFETY SHUT OFF VALVE DIRECT SPARK IGNITER GAS VALVE BURNERS HEAT EXCHANGER DRAFT INDUCER VENT PIPE/TERMINAL CONDENSATION DRAIN Electric Heater Wiring and Wiring
Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 CONTROL PANEL HEATING ELEMENTS Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . .54
IMPORTANT: This installation instruction contains basic unit installation information including installation of field control devices. For information on unit start-up, service, and opera- tion, refer to the unit Controls, Start-Up, Operation, Service, and Troubleshooting Instructions also enclosed in the unit lit- erature packet.
62X 03-55 Ton Dedicated Vertical or Horizontal
Outdoor Air Unit with Optional Energy Conservation Wheel
2
SAFETY CONSIDERATIONS Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precau- tions in the literature, tags and labels attached to the unit, and other safety precautions that may apply. Refer to Fig. 1 to locate label placement. Follow all safety codes, including ANSI (American National Stan- dards Institute) Z223.1. Wear safety glasses and work gloves. Use quenching cloth for unbrazing operations. Have fire extinguishers available for all brazing operations.
GENERAL This Installation and Start-Up Instructions literature is for Carrier 62X series packaged dedicated outdoor air units. 62X units are de- signed for outdoor installation only, do not install indoors.
PRE-INSTALLATION
Inspection Upon receipt of shipment, carefully check the shipment against the bill of lading. Make sure all units have been received. Inspect inspect each unit for damage on both the interior and exterior. Ensure the shipping company makes proper notation of any short- ages or damage on all copies of the freight bill. Concealed damage not discovered during unloading must be reported to the shipping company within 5 days of receipt of shipment. NOTE: It is the responsibility of the purchaser to file all necessary claims with the shipping company.
Storage If the equipment is not needed for immediate installation upon its arrival at the job site, it should be stored in a clean, dry area prior to installation.
WARNING
Before performing service or maintenance operations on unit, turn off main power switch to unit. Electrical shock could cause personal injury.
WARNING
UNIT OPERATION AND SAFETY HAZARD Failure to follow this warning could cause personal injury, death and/or equipment damage. R-410A refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on R-410A refrigerant equipment.
WARNING
If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal in- jury or loss of life. Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance. WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance. Do not touch any electrical switch; do not use any
phone in your building. Immediately call your gas supplier from a neighbors
phone. Follow the gas suppliers instructions. If you cannot reach your gas supplier, call the fire
department. Installation and service must be performed by a qualified in- staller, service agency or the gas supplier.
AVERTISSEMENT
RISQUE DINCENDIE OU DEXPLOSION Si les consignes de scurit ne sont pas suivies la lettre, cela peut entraner la mort, de graves blessures ou des dommages matriels. Ne pas entreposer ni utiliser dessence ni autres vapeurs ou liq- uides inflammables proximit de cet appareil ou de tout autre appareil. QUE FAIRE SI UNE ODEUR DE GAZ EST DTECTE Ne mettre en marche aucun appareil. Ne toucher aucun interrupteur lectrique; ne pas
utiliser de tlphone dans le btiment. Quitter le btiment immdiatement. Appeler immdiatement le fournisseur de gaz en
utilisant le tlphone dun voisin. Suivre les instructions du fournisseur de gaz.
Si le fournisseur de gaz nest pas accessible, appeler le service dincendie.
Linstallation et lentretien doivent tre effectus par un instal- lateur ou une entreprise dentretien qualifi, ou le fournisseur de gaz.
3
INSTALLATION
Step 1 Check Jobsite Installation, operation and maintenance instructions are provided with each unit. Before unit start-up, read all manuals and become familiar with the unit and its operation. Thoroughly check out the system before operation. Complete the inspections and instruc- tions listed below to prepare a unit for installation. See Fig. 3-8 for unit example physical data. See the unit submittal for actual unit dimensions.
INSTALLATION GUIDELINES (ALL UNITS) 1. Be sure that the location chosen for unit installation provides
adequate space for condenser airflow. 2. Verify that the outdoor air intake is away from any from any
exhaust or other contaminant sources. 3. For units with gas heat, ensure proper clearance for flue gas
exhaust. Ensure flue gas exhaust is away from the outdoor air intake of other equipment. For proper unit operation, adequate combustion and ventilation air must be provided in accordance with Section 5.3 (Air for Combustion and Ventilation) of the National Fuel Gas Code, ANSI Z223.1 (American National Standards Institute). Verify proper access to make gas pipe connections.
4. For units with a power exhaust, verify that the exhaust outlet is free from obstruction.
5. For units with hot water heat, verify access for hot water pipe routing and valve installation.
6. Verify that the unit is installed with proper access and clear- ance in accordance with recommended service clearances, which is 48 in. on all sides of the unit. See Fig. 3-8 for typical unit dimensions.
7. Be sure that the unit can be installed with the proper pitch to encourage condensate drainage.
8. Verify the installation location is isolated from sleeping areas, private offices and other acoustically sensitive spaces.
9. For units with horizontal duct connection, provide sufficient space for duct connections and transitions.
10. Provide sufficient access to make power and control wiring connections.
11. Verify the unit power connection and control panel are away from any conductive services in accordance with local code.
Step 2 Check Unit Upon receipt of equipment at the jobsite, inspect each unit for damage on both the interior and exterior. Note any damage and contact your local equipment sales office. INSPECT UNIT To prepare the unit for installation, complete the procedures listed below: 1. Verify that the correct unit has been received. Check the unit
capacity (tonnage), voltage, orientation, and configuration. 2. Compare the electrical data on the unit nameplate with to ver-
ify the jobsite power feed (voltage, amperage, MCA) and power protection (MOCP).
3. Verify that the unit is the correct model for the entering water temperature of the job (standard or extended range).
4. Verify all required field installed components, including sen- sors, control interface, etc. have been received.
5. Check the refrigerant piping connections to make sure they are free from defects, kinks, dents, and leaks.
6. Inspect the blower assembly. Verify that the blower has not come lose during shipping. Verify free blower rotation.
7. For units with energy conservation wheel (ECW), verify the ECW assembly and the drive assembly (belt and motor).
8. Inspect all electrical connections. Be sure connections are clean and tight at the terminals.
9. Verify that a control interface (Equipment Touch or Field Assistant) will be available.
Step 3 Provide Unit Support ROOF CURB Assemble or install accessory roof curb in accordance with in- structions shipped with this accessory. See submittal drawings for roof curb dimensions. Install insulation, cant strips, roofing, and counter flashing, if required. For vertical supply and return con- nections, ductwork can be installed to roof curb before unit is set in place. Ductwork must be attached to curb and not to the unit. Curb must be level. This is necessary to permit unit drain to func- tion properly. Unit leveling tolerance is 1/16 in. per linear ft in any direction. Refer to Accessory Roof Curb Installation Instruc- tions for additional information as required. When accessory roof curb is used, unit may be installed on class A, B, or C roof cover- ing material. Carrier roof curb accessories are for flat roofs or slab mounting.
IMPORTANT: Read the entire instruction manual before start- ing installation.
WARNING
Electrical shock can cause personal injury and death. Shut off all power to this equipment during installation. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.
IMPORTANT: The installation of dedicated outdoor air units and all associated components, parts, and accessories which make up the installation shall be in accordance with the regula- tions of ALL authorities having jurisdiction and MUST conform to all applicable codes. It is the responsibility of the installing contractor to determine and comply with ALL applicable codes and regulations.
IMPORTANT: The gasketing of the unit to the roof curb is critical for a watertight seal. Install gasket with the roof curb. Improperly applied gasket can also result in air leaks and poor unit performance. Do not slide unit to position on roof curb.
4
Step 4 Rig and Place Unit See Tables 1-5 for physical data. See Fig. 2 for illustrations on lifting small and large units. File any claim with transportation agency.
Do not drop unit; keep upright. Use wooden top skid or spreader bars over unit to prevent sling or cable damage. Rollers may be used to move unit across a roof. Level by using unit rail as a refer- ence; leveling tolerance is 1/16 in. per linear ft in any direction.
Refer to the DOAS (Dedicated Outdoor Air System) Builder gen- erated submittal for weights and dimensions of a unit. POSITIONING Maintain clearance around and above unit to provide minimum distance from combustible materials, proper airflow, and service access. Do not install unit in an indoor location. Do not locate air inlets near exhaust vents or other sources of contaminated air. For proper unit operation, adequate combustion and ventilation air must be provided in accordance with Section 5.3 (Air for Combustion and Ventilation) of the National Fuel Gas Code, ANSI Z223.1 (American National Standards Institute). Although unit is weatherproof, guard against water from higher level runoff and overhangs. For gas heat units, locate mechanical draft system flue assembly at least 4 ft. from any opening through which combustion products could enter the building, and at least 4 ft. from any adjacent building (or per local codes). When the unit is located adjacent to public walkways, flue assembly must be at least 7 ft. above grade. Locate unit at least 10 ft. away from adjacent units.
Fig. 1 Label Placement
CAUTION
UNIT DAMAGE HAZARD Failure to follow this caution may result in equipment damage. All panels must be in place when rigging. Unit is not designed for handling by fork truck when packaging is removed. If using top crate as spreader bar, once unit is set, carefully lower wooden crate off building roof top to ground. Ensure that no people or obstructions are below prior to lowering the crate.
ITEM # PART # DESCRIPTION
1 91070002 Warning Label 2 91031108 Door Latch Label 3 91070016 CA Cancer Warning Label 4 Manufacturers Data label 5 91060002 R-410A Label 6 9-21577 Hot Surface Label 7 0527N-0018 Condensate Trap Label 8 057-0048 Copper Conductor Label 9 S-8238 Additional Parts Label 10 Brand Label 11 0527N-0620 Rotation Label
5
Clearances The clearances below are the required distances that the unit must be away from objects and other units to allow service access and proper operation of the unit. For unit dimensions, refer to Fig. 3-8. Service Clearances The minimum recommended service clearance is 48-in. on all sides of unit with access doors. Ventilation Clearances In order to ensure proper operation of an air source unit, a 24 in. clearance for ventilation must be maintained on the sides. In addi- tion, specific ventilation situational clearance guidelines are listed below. Do not locate the unit under an overhang or near a wall or
other equipment that fosters short circuiting hot air to the condenser coil intakes.
Do not locate unit within 10 ft., or directly downwind, from exhaust fans or flues.
Do not locate adjacent unit condenser sections closer than 6 ft. to one another to reduce the possibility of condenser air circulation.
ROOF MOUNT Check building codes for weight distribution requirements. Unit operating weight is shown in the DOAS Builder generated sub- mittal. When installing the equipment on top of a building, the fol- lowing should be considered. Structural members supporting the unit must be sufficiently strong for the weight of the unit and mounting rails. Transmission of sound into the building is some- times a problem when the structure is not strong enough.
SLAB MOUNT When installed at ground level, the unit should be mounted on a level concrete slab which should extend at least 2 in. beyond the unit on all sides. The top of the slab should be 2 in. above the ground level. The depth of the slab below the ground level and its structural design is governed by the type of soil and climatic con- ditions. The slab must not be in contact with any part of the build- ing wall or foundation. The space between the slab and building wall prevents the possibility of transmitting vibration to the build- ing. The dimensions of the slab or roof mount should be checked and verified before the equipment arrives. Consider the conden- sate water trap height when mounting the unit on a slab. INSTALLATION ONTO CURB Correct placement of the unit onto the curb is important to operat- ing performance. Refer to product submittal drawings to assure proper duct opening alignment. For locations with seismic or wind load requirements, field engineered and provided curb attachment clips must be provided. The standard Carrier curb is not wind or seismic rated.
NOTE: For weight references, consult the DOAS Builder program submittal.
Fig. 2 Rigging Small and Large Units
CAUTION Do not slide unit into position when it is sitting on the curb. Curb gasketing material may be damaged and leaks may result.
SHACKLE WITH 1 1/4" PIN MINIMUM
(BOTH SIDES)
FIXED CABLE
FIXED SPREADER BARSPREADER
BAR
FIXED
ROLLING BLOCK
20' CABLE THROUGH ROLLING BLOCK
HOOK
LOOP CHAIN THROUGH RIGGING POINT
2" X 2" X 3/16" SQUARE TUBING RIGGING POINT
WELDED TUBING CABINET FRAME
FORMED GALVANIZED
CABINET FRAME
ADJUST CABLE LENGTH TO LIFT POINTS AS NECESSARY, BASED ON UNIT CENTER
OF GRAVITY
SEE DETAIL "A" (TYP ON TUBING FRAMES)
DETAIL "C"
DETAIL "A" HOOK & CHAIN
WELDED FRAME
WELDED FRAME
LIFTING POINTS ON WELDED FRAMES (NUMBER OF LIFTING POINTS MAY VARY) (BOTH SIDES)
LIFTING POINTS BOTH SIDES
FIXED CABLE
WELDED FRAME
HOOK
DETAIL "B" HOOK & CHAIN
GALVANIZED FRAME
GALVANIZED FRAME WITH LIFTING PLATE
LOOP CHAIN THROUGH FRAME AND LIFTING PLATE
HOOK
SEE DETAIL "B" ADDITIONAL LIFT POINTS WITH EXTENDED CONDENSER USED ONLY TO SUPPORT CONDENSER SECTION ON BOTH SIDES TO PREVENT BENDING AT POINT C DURING LIFTING
POINT C
LIFTING STRAP FOR LIFTING POINTS UNDER AIR HANDLER
DETAIL D
DETAIL "D" STRAP
GALVANIZED FRAME
GALVANIZED FRAME WITH LIFTING PLATE
6
Fig. 3 62X A Cabinet, High Capacity with ERV, Vertical Supply, Vertical Exhaust
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
SUPPLY BLOWER
CONDENSATE CONNECTION
OUTSIDE AIR INTAKE HOOD
100
64 1/8
168 5/8
60 3/8
81 1/2
15 5/8
BOTTOM ELECTRICAL ENTRY
100 1/8 18
71 7/8
8 1/2
OPTIONAL GAS/ ELECTRIC HEAT
LIFTING POINT
FLUE
LIFTING POINT
8 1/8
15 5/8
18 5/8 GAS INLET
50 1/2
TOP VIEW
SIDE VIEW
7
Fig. 3 62X A Cabinet, High Capacity with ERV, Vertical Supply, Vertical Exhaust (cont)
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
CONDENSING SIDE NOT SHOWN
EVAPORATOR COIL & FILTER ACCESS
(OPTIONAL WHEEL)
OPTIONAL EXHAUST BLOWER
CONTROL PANEL
COMPRESSOR
72 1/8 4 10 1/8
7 7/8
4 17 1/8
25 7/8
9 3/4
8 1/8
36 1/2
8 1/8
36 12
EX H
AU ST
A IR
SUPPLY AIR
ELECTRICAL ENTRY
5/812 1/2
23 17 1/8 23
11
11 7/8
34 7/8
11 3/8
46OUTSIDE AIR INTAKE
AIR EXHAUST
SIDE VIEW
BOTTOM VIEW
BACK VIEW
8
Fig. 4 Unit Dimensions 62X A Cabinet, High Capacity with ERV, Horizontal Supply, Vertical Exhaust
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
SUPPLY BLOWER
CONDENSATE CONNECTION
OPTIONAL GAS/ ELECTRIC HEAT
OUTSIDE AIR INTAKE HOOD
100
64
166 1/8
60 3/8
LIFTING POINT
FLUE
LIFTING POINT 71 7/8
8 1/2
100 5/8 1550 1/2
7 3/8
9 3/8
7 3/4
CONDENSER FAN
8 1/8
15 5/8
18 5/8 GAS INLET
BACK VIEW
TOP VIEW
9
Fig. 4 Unit Dimensions 62X A Cabinet, High Capacity with ERV, Horizontal Supply, Vertical Exhaust (cont)
EVAPORATOR COIL & FILTER ACCESS
CONTROL PANEL
(OPTIONAL WHEEL)
COMPRESSOROPTIONAL EXHAUST BLOWER
EX H
AU ST
A IR
CONDENSING SIDE NOT SHOWN
36 12
8 1/8
36 1/2
8 1/8 17
25
11
22 25 16
7 1/4
9 1/2
23 17 1/8 23
11
11 7/8
34 7/8
11 3/8
46OUTSIDE AIR INTAKE
AIR EXHAUST
SUPPLY AIR
TOP VIEW
BOTTOM VIEW
RIGHT SIDE VIEWLEFT SIDE VIEW
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
10
Fig. 5 Unit Dimensions 62X CL Cabinet, High Capacity (Size 25), ERV, Vertical Supply, Vertical Exhaust
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
21 1/8
FLUE
SUPPLY BLOWER
CONDENSATE CONNECTION
OUTSIDE AIR INTAKE HOOD
OPTIONAL EXHAUST HOOD
OPTIONAL GAS FURNACE/ELECTRICAL HEAT/ HOT WATER COIL
LIFTING POINT GAS INLET
153
86 3/8
7 3/4
49 3/8 52 5/8
BOTTOM ELECTRICAL ENTRY
7 5/8
LIFTING POINT
87 1/8
98 1/2 153 3/8
272 7/8
SUPPORT POINT
CONDENSER FANS
81 5/8
100 1/2
15 3/4
11
Fig. 5 Unit Dimensions 62X CL Cabinet, High Capacity (Size 25), ERV, Vertical Supply, Vertical Exhaust (cont)
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
TOP PLAN VIEW CONDENSING SIDE
NOT SHOWN
R ET
U R
N A
IR
OA DAMPER
RA DAMPER
SUPPLY AIR
COMPRESSOR
BAROMETERIC EXHAUST DAMPER
(OPTIONAL WHEEL) COIL COMPARTMENT & FILTER ACCESS
CONTROL PANEL
EXHAUST BLOWER
EXHAUST AIR
13 1/2
2021 1/2
21 7/8
9 1/2
46 8 5/8
22 1/8
37 1/4
40
42 3/4
25 1/2
OUTSIDE AIR INTAKE
4
4
8 1/8
44 1/8
6 3/8
6 3/8
21 1/2 91
ELECTRICAL ENTRY
10 1/4
47 3/8 1 5/8
12
Fig. 6 Unit Dimensions 62X CL Cabinet, High Capacity (Size 25) ERV, Horizontal Supply, Vertical Exhaust
21 1/8
FLUE SUPPLY BLOWER
CONDENSATE CONNECTION
OUTSIDE AIR INTAKE HOOD
OPTIONAL EXHAUST HOOD
OPTIONAL GAS FURNACE/ELECTRICAL HEAT/ HOT WATER COIL
LIFTING POINT GAS INLET
153
86 3/8
7 3/4
1 1/2
7 5/8
52 5/8
49 3/8
LIFTING POINT
SUPPORT POINT
6 5/8
18 3/8
CONDENSER FANS
81 5/8
87 1/8
98 1/2 153 3/8
272 7/8
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
13
Fig. 6 Unit Dimensions 62X CL Cabinet, High Capacity (Size 25) ERV, Horizontal Supply, Vertical Exhaust (cont)
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
TOP PLAN VIEW CONDENSING SIDE
NOT SHOWN
R ET
U R
N A
IR
OA DAMPER
RA DAMPER COMPRESSOR
BAROMETERIC EXHAUST DAMPER
(OPTIONAL WHEEL) COIL COMPARTMENT & FILTER ACCESS
CONTROL PANEL
EXHAUST BLOWER
EXHAUST AIR
13 1/2
2021 1/2
21 7/8
9 1/2
46
22 1/8
37 1/4
40
OUTSIDE AIR INTAKE
21 1/2
24 1/4
18 1/2
SUPPLY AIR
24 1/222 1/4
17 1/8
11 1/4
8 1/2
78 1/447 3/8
16 3/8
6 3/8
6 3/8
6 5/8
14
Fig. 7 Unit Dimensions 62X DXL Cabinet, High Capacity (Sizes 25-35), ERV, Vertical Supply, Vertical Exhaust
OPTIONAL GAS/ ELECTRIC HEAT CONDENSATE
CONNECTION
CONDENSER FANS
SUPPLY BLOWER OUTSIDE AIR INTAKE HOOD
87
399 3/8
210 5/8
21 1/8 BOTTOM
ELECTRICAL ENTRY
LIFTING POINTS
FLUE
GAS INLET
LIFTING POINT
98 1/4 269 1/8 32
90 7/8
8 5/8
159 3/4
7 3/4
117 7/8 LIFTING POINTS
162 3/4
366 1/2
TOP VIEW
BACK VIEW
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
15
Fig. 7 Unit Dimensions 62X DXL Cabinet, High Capacity (Sizes 25-35), ERV, Vertical Supply, Vertical Exhaust (cont)
(OPTIONAL WHEEL) EVAPORATOR COIL & FILTER ACCESS
COMPRESSORSOPTIONAL EXHAUST BLOWER
CONTROL PANELS
203 1/2
74 5/8 18 3/8
8 3/8
60
8 3/8
EX H
AU ST
A IR
ELECTRICAL ENTRYCONDENSING SIDE NOT SHOWN
4 51 3/4
13 7/8
4 25 3/8
38
13 3/8
6 5/848
SUPPLY AIR
FRONT VIEW
BOTTOM VIEW
15 3/8
21 7/8
16 1/4 20
13 1/2 20
16 1/4
48 1/4
31 3/4
71 1/2 7 3/8OUTSIDE AIR INTAKE
AIR EXHAUST
LEFT SIDE VIEW
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
16
Fig. 8 Unit Dimensions 62X DXL Cabinet, High Capacity (Sizes 25-35), ERV, Horizontal Supply, Vertical Exhaust
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
OPTIONAL GAS/ ELECTRIC HEAT CONDENSATE
CONNECTION
CONDENSER FANS
SUPPLY BLOWER OUTSIDE AIR INTAKE HOOD
87 1/8
399 3/8
LIFTING POINTS
FLUE
GAS INLET
LIFTING POINT
98 1/4 269 1/8 32
90 7/8
8 5/8
159 3/4
7 3/4
117 7/8 LIFTING POINTS
162 3/4
366 1/2
7 1/8
17 3/4 1 1/4
TOP VIEW
BACK VIEW
17
Fig. 8 Unit Dimensions 62X DXL Cabinet, High Capacity (Sizes 25-35), ERV, Horizontal Supply, Vertical Exhaust (cont)
NOTES: 1. Dimensions are in inches. 2. For detailed information on unit
dimensions, please refer to a latest edition of Carriers Dedicated Outdoor Air Systems Builder.
3. For an exact unit drawing, please refer to the DOAS Builder generated submittal.
(OPTIONAL WHEEL) EVAPORATOR COIL & FILTER ACCESS
COMPRESSORS
OPTIONAL EXHAUST BLOWER
CONTROL PANELS
74 5/8 18 3/8
8 3/8
60
8 3/8
EX H
AU ST
A IR
CONDENSING SIDE NOT SHOWN
25 7/8
31 3/4
19 1/8
15 3/8
21 7/8
48 1/4
31 3/4
71 1/2 7 3/8OUTSIDE AIR INTAKE
AIR EXHAUST 16 1/4
20 13 1/2
20 16 1/4
7
18
30 3/8 32 23 5/8
SUPPLY AIR
FRONT VIEW
BOTTOM VIEW
LEFT SIDE VIEW RIGHT SIDE VIEW
18
Table 1 Physical Data 62X A Cabinet
UNIT 62X A CABINET 03 04 05 06 07 08 NOMINAL CAPACITY (TONS) 3 4 5 6 7 8 COMPRESSOR
Unit without ERV Quantity/Unit Model 1...ZPD34 1...ZPD42 1...ZPD51 1...ZPD54 1...ZPD72 1...ZPD83 Unit with ERV Quantity/Unit Model 1...ZPD34 1...ZPD42 1...ZPD51 1...ZPD61 1...ZPD72 1...ZPD83 Number of Refrigerant Circuits 1 Oil Pre-Charged
REFRIGERANT TYPE R-410A CONDENSER COIL
Standard Efficiency Condenser (sq ft) 10.0 10.0 10.0 13.5 13.5 13.5 High-Efficiency Condenser (sq ft) 27 27
CONDENSER FAN Standard Capacity Condenser
Nominal Cfm (total) 4000 4000 4000 5200 5200 5200 Quantity Diameter (mm) 1...630 Motor Hp 1.3 1.3 1.3 1.3 1.3 1.3
High Capacity Condenser Nominal Cfm (total) 11200 11200 Quantity Diameter (mm) 2...630 2...630 Motor Hp 1.3 1.3
HIGH-PRESSURE SWITCH (PSIG) Cutout 640 Reset (Manual) 595
EVAPORATOR COIL Face Area without ERV (sq ft) 2.8 2.8 2.8 4.7 4.7 4.7 Face Area with ERV (sq ft) 7 7 7 Use B Cabinet
SUPPLY FAN Backward Curved ECM (mm) 350 Airfoil (in.) Backward Inclined (in.) Nominal Cfm 100% OA 450 600 750 900 1050 1200
OPTIONAL HOT GAS REHEAT AND LIQUID SUBCOOLING COIL
Face Area without ERV (sq ft) 2.8 2.8 2.8 4.7 4.7 4.7 Face Area with ERV (sq ft) 7 7 7 Use B Cabinet
LOW-PRESSURE SWITCH (PSIG) Cutout 35 Reset (Auto) 55
CONDENSATE DRAIN CONNECTION (NPT) (in.) 0.75 OPTIONAL GAS HEAT SECTION
Gas Input Sizes (Btuh x 1000) 75, 100 Control Type
Stages (no. of stages) 2 Modulating (% range)* 5:1, 10:1*
Efficiency (Steady State) (%) 80 Supply Line Pressure Range (in. wg) 5.0 min. - 13.5 max Rollout Switch Cutout Temp (F) 350 Gas Valve Quantity 1 Std - 2 with modulating option Manifold Pressure (in. wg)
Natural Gas Std 3.5 LP Gas Special Order 10
OPTIONAL ELECTRIC HEAT Size Range (kW) 5, 10, 15, 20, 25, 30 Control Type
Stages (no. of stages) 1, 2, 4 SCR (% range)* 0-100
OPTIONAL HOT WATER HEAT COIL WITH ERV Use B Cabinet Use B Cabinet OPTIONAL HOT WATER HEAT COIL WITHOUT ERV Use B Cabinet Use B Cabinet
19
Table 1 Physical Data 62X A Cabinet (cont)
LEGEND
* Optional.
NOTE: For unit and component weights, refer to the latest edition of Carrier's Dedicated Outdoor Air Systems Builder. 10:1 gas heat not available for 75 MBH heater.
UNIT 62X A CABINET 03 04 05 06 07 08 NOMINAL CAPACITY (TONS) 3 4 5 6 7 8 OUTDOOR AIR FILTERS
Quantity Size (in.) with ERV Standard 2-in. MERV 8 2...24x24 Use B Cabinet Optional 4-in.
MERV 8 2...24x24 Use B Cabinet MERV 11 2...24x24 Use B Cabinet MERV 14 2...24x24 Use B Cabinet
Quantity Size (in.) without ERV Standard 2-in. MERV 8 1...24x24 2...24x24 Optional 4-in.
MERV 8 1...24x24 2...24x24 MERV 11 1...24x24 2...24x24 MERV 14 1...24x24 2...24x24
OPTIONAL ERV Type Molecular Sieve Use B Cabinet Diameter ... depth (in.) 32...4, 36...4 Use B Cabinet
OPTIONAL ERV FILTERS Quantity Size (in.)
with 24 in. ERV 4...14x20 Use B Cabinet with 32 in. ERV 6...18x20 Use B Cabinet with 36 in. ERV 2...20x20
2...20x24 Use B Cabinet
OPTIONAL EXHAUST FAN Backward Curved ECM (mm) 350 Airfoil (in.) Backward Inclined (in.) Nominal Cfm 450 600 750 900 1050 1200
ECM Electronically Commutated Motor ERV Energy Recovery Ventilator FPI Fins per Inch LP Liquid Propane OA Outdoor Air SCR Silicon-Controlled Rectifier
20
Table 2 Physical Data 62X, B Cabinet
UNIT 62X B CABINET 03 04 05 06 07 08 10 12 15 18 NOMINAL CAPACITY (TONS) 3 4 5 6 7 8 10 12 15 17.5 COMPRESSOR Unit without ERV
Quantity/Unit Model 1...ZPD34 1...ZPD42 1...ZPD51 1...ZPD54 1...ZPD72 1...ZPD83 1...ZPD51, 1...ZP51
1...ZPD61, 1...ZP61
1...ZPD72, 1...ZP72
1...ZPD91, 1...ZP91
Unit with ERV
Quantity/Unit Model 1...ZPD34 1...ZPD42 1...ZPD51 1...ZPD61 1...ZPD72 1...ZPD83 1...ZPD51, 1...ZP51
1...ZPD61, 1...ZP61
1...ZPD83, 1...ZP83
1...ZPD91, 1...ZP91
Number of Refrigerant Circuits 1 2 Oil Pre-Charged
REFRIGERANT TYPE R-410A CONDENSER COIL Standard Efficiency Condenser (sq ft) 10.0 10.0 10.0 13.5 13.5 13.5 27 27 27 27 High-Efficiency Condenser (sq ft) 27.0 27.0 40 40
CONDENSER FAN Standard Capacity Condenser
Nominal Cfm (total) 4000 4000 4000 5200 5200 5200 11,200 11,200 10,600 10,600 Quantity Diameter (mm) 1...630 1...630 1...630 1...630 1...630 1...630 2...630 2...630 2...630 2...630 Motor Hp 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3 1.3
High Capacity Condenser Nominal Cfm (total) 11,200 11,200 Quantity Diameter (in.) 2...630 2...630 Motor Hp 1.3 1.3
HIGH-PRESSURE SWITCH (PSIG) Cutout 640 Reset (Manual) 595
EVAPORATOR COIL Face Area without ERV (sq ft) 2.8 2.8 2.8 4.7 4.7 4.7 7 7 7 10 Face Area with ERV (sq ft) 7 7 7 10 10 10 12 12 Use C Cabinet
SUPPLY FAN Backward Curved ECM (mm) 350, 450 Low (460V only), 450 High Airfoil (in.) 12, 14, 16 Backward Inclined (in.) 10, 11, 12, 14, 16 Nominal Cfm 100% OA 450 600 750 900 1050 1200 1500 1800 2250 2700 Motor Hp Range ECM, 1, 1.5, 2, 3, 5
OPTIONAL HOT GAS REHEAT AND LIQUID SUBCOOLING COIL Face Area without ERV (sq ft) 2.8 2.8 2.8 4.7 4.7 4.7 7 7 7 10 Face Area with ERV (sq ft) 7 7 7 10 10 10 12 12 Use C Cabinet
LOW-PRESSURE SWITCH (PSIG) Cutout 35 Reset (Auto) 55
CONDENSATE DRAIN CONNECTION (NPT) (in.) 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75 0.75
OPTIONAL GAS HEAT SECTION Gas Input Sizes (Btuh x 1000) 75, 100, 150, 200 Control Type
Stages (no. of stages) 2 Modulating (% range) 5:1, 10:1 Efficiency (Steady State) (%) 80 Supply Line Pressure Range (in. wg) 5.0 min. - 13.5 max Rollout Switch Cutout Temp (F) 350 Gas Valve Quantity 1 Std - 2 with modulating option Manifold Pressure (in. wg)
Natural Gas Std 3.5 LP Gas Special Order 10
OPTIONAL ELECTRIC HEAT Size Range (kW) 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 100 Control Type
Stages (no. of stages) 1, 2, 4 SCR (% range) 0-100
OPTIONAL HOT WATER HEAT COIL WITH ERV (in.) 27.5 x 27.5, 4 row, 8 FPI. See Hot Water Coil Drawings. Use C Cabinet
OPTIONAL HOT WATER HEAT COIL WITHOUT ERV (in.) 27.5 x 27.5, 4 row, 8 FPI. See Hot Water Coil Drawings.
21
Table 2 Physical Data 62X, B Cabinet (cont)
LEGEND
NOTE: For unit and component weights, refer to the latest edition of Carrier's Dedicated Outdoor Air Systems Builder. 10:1 gas heat not available for 75 MBH heater.
UNIT 62X B CABINET 03 04 05 06 07 08 10 12 15 18 NOMINAL CAPACITY (TONS) 3 4 5 6 7 8 10 12 15 17.5 OUTDOOR AIR FILTERS
Quantity Size (in.) with ERV Standard 2-in. MERV 8 2...24x24 4...16 x 25 2...16x25, 2...20x25 Use C Cabinet Optional 4-in.
MERV 8 2...24x24 4...16 x 25 2...16x25, 2...20x25 Use C Cabinet MERV 11 2...24x24 4...16 x 25 2...16x25, 2...20x25 Use C Cabinet MERV 14 2...24x24 4...16 x 25 2...16x25, 2...20x25 Use C Cabinet
Quantity Size (in.) without ERV Standard 2-in. MERV 8 1...24x24 2...24x24 4...16x24 Optional 4-in.
MERV 8 1...24x24 2...24x24 4...16x24 MERV 11 1...24x24 2...24x24 4...16x24 MERV 14 1...24x24 2...24x24 4...16x24
OPTIONAL ERV Type Molecular Sieve Use C Cabinet Diameter... depth (in.) 32...4, 36...4, 42...4 Use C Cabinet
OPTIONAL ERV FILTERS Quantity Size (in.)
with 24 in. ERV 4...12 x 24 with 32 in. ERV 6...18x20 with 36 in. ERV 2...20x20, 2...20x24 with 42 in. ERV 2...12x24, 4...20x24
OPTIONAL EXHAUST FAN Backward Curved ECM - (mm) SINGLE - 350, 450 Low (460V Only), 450 High; DUAL - 450 High (208/230V Only) Airfoil (in.) 12, 14, 16 Backward Inclined - (in.) 10, 11, 12, 14, 16 Nominal Cfm 100% 450 600 750 900 1050 1200 1500 1800 2250 2700 Motor Hp Range ECM, 1,1.5,2,3,5
ECM Electronically Commutated Motor ERV Energy Recovery Ventilator FPI Fins per Inch LP Liquid Propane OA Outdoor Air
22
Table 3 Physical Data 62X, C-CL-CXL Cabinet
UNIT 62X C CABINET 07 08 10 12 15 18 20 25 30 35 NOMINAL CAPACITY (TONS) 7 8 10 12 15 17.5 20 25 30 35 COMPRESSOR
Unit without ERV
Quantity/Unit Model 1...ZPD72 1...ZPD83 1...ZPD51, 1...ZP51
1...ZPD61, 1...ZP61
1...ZPD72, 1...ZP72
1...ZPD91, 1...ZP91 2...GSD60120 2...GSD60120 2...GSD60137 2...GSD60182
Unit with ERV
Quantity/Unit Model 1...ZPD72 1...ZPD83 1...ZPD51, 1...ZP51
1...ZPD61, 1...ZP61
1...ZPD83, 1...ZP83
1...ZPD91, 1...ZP91 2...GSD60120 2...GSD60137 2...GSD60154 2...GSD60182
Number of Refrigerant Circuits 1 1 2 2 2 2 2 2 2 2 Oil Pre-Charged
REFRIGERANT TYPE R-410A CONDENSER COIL
Standard Efficiency Condenser (sq ft) 27 27 27 27 54 54 54 High-Efficiency Condenser (sq ft) 27 27 40 40 54 80 80 80
CONDENSER FAN Standard Capacity Condenser
Nominal Cfm (total) 10,600 10,600 10,600 10,600 20,800 20,800 20,800 Quantity Diameter (mm) 2...630 2...630 2...630 2...630 4...630 4...630 4...630 Motor Hp 1.3 1.3 1.3 1.3 1.3 1.3 1.3
High Capacity Condenser Nominal Cfm (total) 11,200 11,200 20,800 31,200 31,200 31,200 Quantity Diameter (mm) 2...630 2...630 4...630 6...630 6...630 6...630 Motor Hp 1.3 1.3 1.3 1.3 1.3 1.3
HIGH-PRESSURE SWITCH (PSIG) Cutout 640 Reset (Manual) 595
EVAPORATOR COIL Face Area without ERV (sq ft) Use B Cabinet 7 7 7 10 12 12 16 16 Face Area with ERV (sq ft) 10 10 12 12 16 16 16 Use D Cabinet
SUPPLY FAN Backward Curved ECM (mm) 350, 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only) Airfoil (in.) 14, 16, 18, 20 Backward Inclined (in.) 14, 16, 18, 20 Nominal Cfm 100% OA 1050 1200 1500 1800 2250 2700 3000 3750 4500 5250 Motor Hp Range ECM, 1, 1.5, 2, 3, 5, 7, 5, 10
OPTIONAL HOT GAS REHEAT AND LIQUID SUBCOOLING COIL
Face Area w/o Wheel (sq ft) Use B Cabinet 7 7 7 10 12 12 16 16 Face Area w/ Wheel (sq ft) 10 10 12 12 16 16 16 Use D Cabinet
LOW-PRESSURE SWITCH (PSIG) Cutout 35 Reset (Auto) 55
CONDENSATE DRAIN CONNECTION (NPT) (in.) .75
OPTIONAL GAS HEAT SECTION Gas Input Sizes (Btuh x 1000) 75, 100, 150, 200, 250, 300 Gas Input Sizes (Btuh x 1000) XL Cabinet 200, 300, 400, 600, 700, 800
Control Type Stages (no. of stages) 2 Stages XL Cabinet (no. of stages) 4 Modulating (% range) 5:1, 10:1*
Efficiency (Steady State) (%) 80 Supply Line Pressure Range (in. wg) 5.0 min. - 13.5 max Manifold Pressure (in. wg)
Natural Gas Std 3.5 LP Gas Special Order 10
OPTIONAL ELECTRIC HEAT Size Range (kW) 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 100 Control Type
Stages (no. of stages) 1,2,4 SCR (% range) 0-100
OPTIONAL HOT WATER HEAT COIL WITH ERV (in.) 27.5 x 36.25, 4 row, 8 FPI. See Hot Water Coil Drawings. Use D Cabinet
OPTIONAL HOT WATER HEAT COIL WITHOUT ERV (in.) Use B Cabinet 27.5 x 36.25, 4 row, 8 FPI. See Hot Water Coil Drawings.
23
Table 3 Physical Data 62X, C-CL-CXL Cabinet (cont)
LEGEND * XL gas heater only available in 10:1 modulation.
NOTE: For unit and component weights, refer to the latest edition of Carrier's Dedicated Outdoor Air Systems Builder.
UNIT 62X C CABINET 07 08 10 12 15 18 20 25 30 35 NOMINAL CAPACITY (TONS) 7 8 10 12 15 17.5 20 25 30 35 OUTDOOR AIR FILTERS
Quantity Size (in.) with ERV Standard 2-in. MERV 8 4...16x25 2...16x25, 2...20x25 3...16x16, 6...16x20 Use D Cabinet Optional 4-in.
MERV 8 4...16x25 2...16x25, 2...20x25 3...16x16, 6...16x20 Use D Cabinet MERV 11 4...16x25 2...16x25, 2...20x25 3...16x16, 6...16x20 Use D Cabinet MERV 14 4...16x25 2...16x25, 2...20x25 3...16x16, 6...16x20 Use D Cabinet
Quantity Size (in.) without ERV Standard 2-in. MERV 8 Use B Cabinet 2...24x24 4...16x25 2,,,16x25, 2...20x25 3...16x16, 6...20x20 Optional 4-in.
MERV 8 Use B Cabinet 2...24x24 4...16x25 2,,,16x25, 2...20x25 3...16x16, 6...20x20 MERV 11 Use B Cabinet 2...24x24 4...16x25 2,,,16x25, 2...20x25 3...16x16, 6...20x20 MERV 14 Use B Cabinet 2...24x24 4...16x25 2,,,16x25, 2...20x25 3...16x16, 6...20x20
OPTIONAL ERV Type Molecular Sieve Diameter ... depth (in.) 32...4, 36...4, 42...4, 48...4, 48...6 Use D Cabinet
OPTIONAL ERV FILTERS Quantity Size (in.)
with 32 in. ERV 6...18x20 Use D Cabinet with 36 in. ERV 2...20x20, 2...20x24 Use D Cabinet with 42 in. ERV 2...12x24, 4...20x24 Use D Cabinet with 48 in. ERV 6...18x25 Use D Cabinet
OPTIONAL EXHAUST FAN Backward Curved ECM - (mm) SINGLE - 350, 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only); DUAL - 450 Low (460 Only), 450 High Airfoil (in.) 14, 16, 18, 20 Backward Inclined - (in.) 14, 16, 18, 20 Nominal Cfm 100% 1050 1200 1500 1800 2250 2700 3000 3750 4500 5250 Motor Hp Range ECM, 1, 1.5, 2, 3, 5, 7.5, 10
ECM Electronically Commutated Motor ERV Energy Recovery Ventilator FPI Fins per Inch LP Liquid Propane OA Outdoor Air SCR Silicon-Controlled Rectifier
24
Table 4 Physical Data 62X, D-DXL Cabinet Sizes 20-35, UNIT 62X, D CABINET 20 25 30 35 NOMINAL CAPACITY (TONS) 20 25 30 35 COMPRESSOR
Unit without ERV Quantity/Unit ... Model 2...GSD60120 2...GSD60120 2...GSD60137 2...GSD60182
Unit with ERV Quantity/Unit ... Model 2...GSD60120 2...GSD60137 2...GSD60154 2...GSD60182
Number of Refrigerant Circuits 2 Oil Pre-charged
REFRIGERANT TYPE R-410A CONDENSER COIL
Standard Efficiency Condenser (sq ft) 54 54 54 High-Efficiency Condenser (sq ft) 54 80 80 80
CONDENSER FAN Standard Capacity Condenser
Nominal Cfm (total) 20,800 20,800 20,800 Quantity Diameter (mm) 4...630 4...630 4...630 Motor Hp 1.3
High Capacity Condenser Nominal Cfm (total) 20,800 31,200 31,200 31,200 Quantity...Diameter (mm) 4...630 6...630 6...630 6...630 Motor Hp 1.3
HIGH-PRESSURE SWITCH (PSIG) Cutout 640 Reset (Manual) 595
EVAPORATOR COIL Face Area without ERV (sq ft) 12 12 16 16 Face Area with ERV (sq ft) 16 28.9 28.9 28.9
SUPPLY FAN
Backward Curved ECM (mm) SINGLE - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only), 560 (208/230V only): DUAL - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only)
Airfoil (in.) 18, 20, 22, 25 Backward Inclined (in.) 18, 20, 22, 25 Nominal Cfm 100% OA 3000 3750 4500 5250 Motor Hp Range ECM, 1.5, 2, 3, 5, 7.5, 10, 15
OPTIONAL HOT GAS REHEAT AND LIQUID SUBCOOLING COIL Face Area without ERV (sq ft) 12 12 16 16 Tube Size with ERV (in.) 16 28.9 28.9 28.9
LOW-PRESSURE SWITCH (PSIG) Cutout 35 Reset (Auto) 55
CONDENSATE DRAIN CONNECTION (NPT) (in.) 1 OPTIONAL GAS HEAT SECTION
Gas Input Sizes (Btuh x 1000) 100, 150, 200, 250, 300, 350, 400 Gas Input Sizes (Btuh x 1000) XL Cabinet 400, 500, 600, 700, 800, 1000, 1200 Control Type
Stages (no. of stages) 2 Stages XL Cabinet (no. of stages) 4
Modulating (% range) 5:1, 10:1* Efficiency (Steady State) (%) 80 Supply Line Pressure Range (in. wg) 5.0 min. - 13.5 max
Rollout Switch Cutout Temp (F) 350 Gas Valve Quantity 1 Std - 2 with modulating option
Manifold Pressure (in. wg) Natural Gas Std 3.5 LP Gas Special Order 10
OPTIONAL ELECTRIC HEAT Size Range (kW) 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 100, 110, 120 Control Type
Stages (no. of stages) 1,2,4 SCR (% range) 0-100
OPTIONAL HOT WATER HEAT COIL WITH ERV (in.) 40.5 x 47.5, 4 row, 8 FPI. See Hot Water Coil Drawings. OPTIONAL HOT WATER HEAT COIL WITHOUT ERV (in.) 40.5 x 47.5, 4 row, 8 FPI. See Hot Water Coil Drawings.
25
Table 4 Physical Data 62X, D-DXL Cabinet, Sizes 20-35 (cont)
LEGEND * 10:1 modulating control available on DXL Cabinet (400-1200 MBtuh only). 5 kW SCR electric heater not available.
NOTE: For unit and component weights, refer to the latest edition of Carrier's Dedicated Outdoor Air Systems Builder.
UNIT 62X, D CABINET 20 25 30 35 NOMINAL CAPACITY (TONS) 20 25 30 35 OUTDOOR AIR FILTERS
Quantity Size (in.) with ERV Standard 2-in. MERV 8 3...16x16, 6...16x20 6...20x25, 3...25x25 Optional 4-in.
MERV 8 3...16x16, 6...16x20 6...20x25, 3...25x25 MERV 11 3...16x16, 6...16x20 6...20x25, 3...25x25 MERV 14 3...16x16, 6...16x20 6...20x25, 3...25x25
Quantity Size (in.) without ERV Standard 2-in. MERV 8 2...16x25, 2...20x25 3...16x16, 6...20x20 Optional 4-in.
MERV 8 2...16x25, 2...20x25 3...16x16, 6...20x20 MERV 11 2...16x25, 2...20x25 3...16x16, 6...20x20 MERV 14 2...16x25, 2...20x25 3...16x16, 6...20x20
OPTIONAL ERV Type Molecular Sieve Diameter ... depth (in.) 484, 486, 544, 604, 606, 664, 666
OPTIONAL ERV FILTERS Quantity Size (in.)
with 48 in. ECW 6...18x25 with 54 in. ECW 6...20x30 with 60 in. ECW 10...16x36 with 66 in. ECW 8...36x20
OPTIONAL EXHAUST FAN
Backward Curved ECM (mm) SINGLE - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only), 560 (208/230V Only); DUAL - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only)
Airfoil (in.) 18, 20, 22, 25 Backward Inclined (in.) 18, 20, 22, 25 Nominal Cfm 100% 3000 3750 4500 5250 Motor Hp Range ECM, 1.5, 2, 3, 5, 7.5, 10, 15
ECM Electronically Commutated Motor ERV Energy Recovery Ventilator FPI Fins per Inch LP Liquid Propane OA Outdoor Air SCR Silicon-Controlled Rectifier
26
Table 5 Physical Data 62X, D-DXL Cabinet, Sizes 40-55
UNIT 62X, D CABINET 40 45 50 55 NOMINAL CAPACITY (TONS) 40 45 50 55 COMPRESSOR
Unit without ERV
Quantity/Unit ... Model 2...GSD60182 2...GSD60120/ 2...GSD60120
(TANDEM)
2...GSD60137/ 2...GSD60137
(TANDEM)
2...GSD60154/ 2...GSD60154
(TANDEM) Unit with ERV
Quantity/Unit ... Model 2...GSD60182 2...GSD60120/ 2...GSD60120
(TANDEM)
2...GSD60137/ 2...GSD60137
(TANDEM)
2...GSD60154/ 2...GSD60154
(TANDEM) Number of Refrigerant Circuits 2 Oil Pre-charged
REFRIGERANT TYPE R-410A CONDENSER COIL
Standard Efficiency Condenser (sq ft) 54 80 80 80 High-Efficiency Condenser (sq ft) 80 121 121 121
CONDENSER FAN Standard Capacity Condenser
Nominal Cfm (total) 20,800 31,200 31,200 31,200 Quantity Diameter (mm) 4...630 6..630 6...630 6...630 Motor Hp 1.3
High Capacity Condenser Nominal Cfm (total) 31,200 52,800 52,800 52,800 Quantity...Diameter (mm) 6...630 6...710 6...710 6...710 Motor Hp 1.3
HIGH-PRESSURE SWITCH (PSIG) Cutout 640 Reset (Manual) 595
EVAPORATOR COIL Face Area without ERV (sq ft) 28.9 28.9 28.9 28.9 Face Area with ERV (sq ft)
SUPPLY FAN
Backward Curved ECM (mm) SINGLE - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only), 560 (208/230V only): DUAL - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only)
Airfoil (in.) 18, 20, 22, 25 Backward Inclined (in.) 18, 20, 22, 25 Nominal Cfm 100% OA 6000 6750 7500 8250 Motor Hp Range ECM, 1.5, 2, 3, 5, 7.5, 10, 15
OPTIONAL HOT GAS REHEAT AND LIQUID SUBCOOLING COIL Face Area without ERV (sq ft) 28.9 28.9 28.9 28.9 Face Area with ERV (in.)
LOW-PRESSURE SWITCH (PSIG) Cutout 35 Reset (Auto) 55
CONDENSATE DRAIN CONNECTION (NPT) (in.) 1 OPTIONAL GAS HEAT SECTION
Gas Input Sizes (Btuh x 1000) 100, 150, 200, 250, 300, 350, 400 Gas Input Sizes (Btuh x 1000) XL Cabinet 400, 500, 600, 700, 800, 1000, 1200 Control Type
Stages (no. of stages) 2 Stages XL Cabinet (no. of stages) 4
Modulating (% range) 5:1, 10:1* Efficiency (Steady State) (%) 80 Supply Line Pressure Range (in. wg) 5.0 min. - 13.5 max
Rollout Switch Cutout Temp (F) 350 Gas Valve Quantity 1 Std - 2 with modulating option
Manifold Pressure (in. wg) Natural Gas Std 3.5 LP Gas Special Order 10
OPTIONAL ELECTRIC HEAT Size Range (kW) 5, 10, 15, 20, 25, 30, 35, 40, 50, 60, 70, 80, 100, 110, 120 Control Type
Stages (no. of stages) 1,2,4 SCR (% range) 0-100
OPTIONAL HOT WATER HEAT COIL WITH ERV OPTIONAL HOT WATER HEAT COIL WITHOUT ERV (in.) 40.5 x 47.5, 4 row, 8 FPI. See Hot Water Coil Drawings.
27
LEGEND * 10:1 modulating control available on DXL Cabinet (400-1200 MBtuh only). 5 kW SCR electric heater not available.
NOTE: For unit and component weights, refer to the latest edition of Carrier's Dedicated Outdoor Air Systems Builder.
UNIT 62X, D CABINET 40 45 50 55 NOMINAL CAPACITY (TONS) 40 45 50 55 OUTDOOR AIR FILTERS
Quantity Size (in.) with ERV Standard 2-in. MERV 8 Optional 4-in.
MERV 8 MERV 11 MERV 14
Quantity Size (in.) without ERV Standard 2-in. MERV 8 6...20x25, 3...25x25 Optional 4-in.
MERV 8 6...20x25, 3...25x25 MERV 11 6...20x25, 3...25x25 MERV 14 6...20x25, 3...25x25
OPTIONAL ERV Type Diameter ... depth (in.)
OPTIONAL ERV FILTERS Quantity Size (in.)
with 48 in. ECW with 54 in. ECW with 60 in. ECW with 66 in. ECW
OPTIONAL EXHAUST FAN
Backward Curved ECM (mm) SINGLE - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only), 560 (208/230V Only); DUAL - 450 Low (460V Only), 450 High, 500 Low, 500 High (460V Only)
Airfoil (in.) 18, 20, 22, 25 Backward Inclined (in.) 18, 20, 22, 25 Nominal Cfm 100% 6000 6750 7500 8250 Motor Hp Range ECM, 1.5, 2, 3, 5, 7.5, 10, 15
Table 5 Physical Data 62X, D-DXL Cabinet, Sizes 40-55(cont)
ECM Electronically Commutated Motor ERV Energy Recovery Ventilator FPI Fins per Inch LP Liquid Propane OA Outdoor Air SCR Silicon-Controlled Rectifier
28
Step 5 Field Fabricate Ductwork On vertical supply or return units, secure all ducts to roof curb and building structure. Do not connect ductwork to unit. Insulate and weatherproof all external ductwork, joints, and roof openings with counter flashing and mastic in accordance with applicable codes. Ducts passing through an unconditioned space must be insulated and covered with a vapor barrier. If a plenum return is used on a vertical unit, the return should be ducted through the roof deck to comply with applicable fire codes. A minimum clearance is not required around ductwork. The unit has been selected and ordered to operate at a specific air volume and external static pressure. This external static pressure is gener- ated by any additional components that are added to the air stream (ductwork, etc.). Additional static pressure, beyond the original design, will affect the performance of the packaged air condition- ing unit and reduce the air volume that can be delivered. Proper engineering methods must be used when calculating external duct and component static pressure losses.
Step 6 Make Unit Duct Connections All 62XA, B, C, D, E, F, G, H, U, V, X, Y, 7, and 8 units bring in 100% outdoor air through the outdoor air intake hood and do not have a return air connection. The 62XA, B, C, D, U, V, 7, and L units have a vertical supply duct opening in the bottom of the unit. The 62XE, F, G, H, X, Y, 8, and 9 units have a horizontal supply duct opening in the side of the unit. All 62XJ, K, L, M, N, P, Q, R, S, Z, 2, 3, 4, 5, 6, and 9 units bring in 100% outside air through the intake hood and also have a return duct opening in the bottom of the unit for exhaust. They will also be equipped with a factory-installed power exhaust and may be equipped with an energy recovery ventilator (ERV) and/or an en- ergy conservation wheel. The return air to these units is not re- circulated or mixed with the incoming outdoor air. The return air may be used to transfer energy to the incoming air via the energy recovery ventilator and is then exhausted. The 62XJ, K, M, N, 2, 3, and L units have a vertical supply and return duct opening in the bottom of the unit. The 62XP, Q, R, S, 5, 6, and 9 units have a hor- izontal supply duct opening in the side of the unit and a vertical re- turn opening in the bottom of the unit. To determine the specifics regarding a particular unit, see the model number nomenclature found in the product data guide for the 62X unit. VERTICAL SUPPLY/RETURN CONNECTIONS For vertical supply or return connections, ductwork openings are shown in the DOAS Builder generated submittal. Attach the ductwork to the roof curb. Do not attach duct directly to the unit.
HORIZONTAL SUPPLY CONNECTIONS For horizontal supply connections, ductwork openings are shown in the DOAS Builder generated submittal. The 62X units do not have horizontal return connections.
Step 7 Install External Trap for Evaporator Condensate Drain The units condensate drain connection is located on the side of the unit (3/4 in. condensate drain connection on A, B and C cabinet units. 1 in. condensate drain connection on D cabinet units). Refer to the DOAS Builder generated submittal for condensate location. All units must have an external trap for condensate drainage. In- stall a trap following A and B dimensions at minimum (see Fig. 9). Protect trap against freeze-up to avoid trap damage. If drain line is installed downstream from the external trap, pitch the line away from the unit at minimum 1/8 in. per 1 ft. of run. Use higher pitch on the line if required by local code. Do not use a pipe size smaller than the unit connection. Refer to the physical data ta- ble for condensate drain connection sizes. Failure to follow these guidelines could cause condensate not to drain properly, and po- tential intrusion of water into the space and/or other negative ef- fects. It is also recommended to pre-prime traps before initial op- eration, or long shutdown periods. Open vents and drain plugs are recommended. See Fig. 9.
Fig. 9 Condensate Drain Piping Details
Step 8 Install Gas Piping (Gas Heat Units Only) 62X unit heaters are only designed to work with Natural Gas. A special order is available for liquid propane (LP). A, B, C, CL, and D Cabinets When equipped with gas heat, the above cabinets only use a single heater. Units with a single heater will include a panel knockout for the gas piping connections. BXL, CXL, DXL Cabinets When equipped with gas heat, the above cabinets only two heat- ers. Units with two heaters require a field knockout for the gas heat piping connection and require a field fabricated and installed gas pipe manifold to connect the two heaters to the main gas sup- ply line. Refer to Table 7 for gas manifold sizes and pressures. Refer to lo- cal building codes, or in the absence of local codes, to ANSI.
WARNING
PERSONAL INJURY HAZARD Failure to follow this warning could cause personal injury. For vertical supply and return units, tools or parts could drop into ductwork and cause an injury. Install a 90 degree turn in the return ductwork between the unit and the conditioned space. If a 90 degree elbow cannot be installed, then a grille of sufficient strength and density should be installed to prevent objects from falling into the conditioned space. Due to electric heater, supply duct will require 90 degree elbow.
NOTES: 1. Trap should be deep enough to offset maximum unit static difference.
A 4-in. trap is recommended. 2. TSP = Total Static Pressure
29
Gas piping length and capacity is shown in Table 6. See Fig. 10 for typical pipe guide and locations of external manual gas shutoff valve. Gas supply piping must be supported starting from connec- tion of the unit. If long stretches of piping are expected to be used, there must be supports at intervals of every 6 to 8 ft. Metal straps, blocks, or hooks are acceptable to support the gas piping. The pip- ing should never be strained or bent.
Table 6 Gas Piping Capacity (cubic ft per hr)
Install field-supplied manual gas shutoff valve with a 1/8 in. NPT pressure tap for test gage connection at unit. The pressure tap is lo- cated on the gas manifold, adjacent to the gas valve. Field gas pip- ing must include sediment trap and union (see Fig. 10). Install a field-supplied gas regulator. Refer to Table 7 for gas manifold sizes and pressures.
Fig. 10 Gas Heat Section (Single Heater Unit)
Table 7 Gas Heat Connection Sizes and Pressures
LEGEND
Size gas-supply piping for 0.3-in. wg maximum pressure drop. Do not use supply pipe smaller than unit gas connection. GAS HEAT SAFETY CONTROLS Safety systems are required for proper performance of the gas heater. The gas heater shall not be permitted to operate with any safety system disabled. If a fault is found in any of the safety sys- tems, then the system shall be repaired only by a contractor quali- fied in the installation and service of gas-fired heating equipment. Combustion Airflow Switch: An airflow switch is provid-
ed as part of the control system to verify airflow through an induced draft fan by monitoring the difference in pressure between the fan and the atmosphere. If sufficient negative pressure is not present, indicating lack of proper air movement through heat exchange, the switch opens, shutting off gas supply through the ignition control mod- ule. The air pressure switch has fixed settings and is not adjustable.
Rollout Switch (Manual Reset): The heater is equipped with manual reset rollout switch(es) in the event of burner flame rollout. The switch will open on temperature rise and shut off gas supply through the ignition control mod- ule. Flame rollout can be caused by insufficient airflow for the burner firing rate (high gas pressure), blockage of the vent system, or in the heat exchanger. The heater should not be placed back in operation until the cause of the roll- out condition is identified. The rollout switch can be reset by pressing the button on top of the switch.
Primary High Limit Switch: To prevent the heater from operating under low airflow conditions, the unit is equipped with a fixed temperature high limit switch, mounted on the vestibule panel. This switch will shut off gas to the heater through the ignition control module before the air temperature reaches 250.0F (121.1C). Re- duced airflow may be caused by restrictions upstream or downstream of the circulating air blower, such as dirty or blocked filters or restriction of the air inlet or outlet to the unit. The high limit switch will shut off the gas when the temperature reaches its setpoint and then resets when the temperature drops 30.0F (16.7C) below the setpoint, ini- tiating a heater ignition. The heater will continue to cycle on limit until the cause of the reduced air flow is corrected.
Ignition Control Module: Ignition control modules are available with a number of different operating functions. Refer to the Sequence of Operation and Control Diagnos- tic data sheets, provided in the instructions package, for a detailed description of the control features, operation, and troubleshooting for the model control installed.
GAS PIPE
LENGTH (FT)
PIPE SIZE (IN.)
3/4 1 1 1/4 1 1/2 2
10 278 520 1050 1600 2700 20 190 350 730 1100 2100 30 152 285 590 890 1650 40 130 245 500 760 1450 50 115 215 440 670 1270 60 105 195 400 610 1105 70 96 180 370 560 1050 90 84 160 320 490 930 100 79 150 305 460 870 125 72 130 275 410 780 150 64 120 250 380 710 175 59 110 225 350 650 200 55 100 210 320 610
WARNING Do not pressure test gas supply while connected to unit. Always disconnect union before servicing. High pressures can cause gas valve damage resulting in a hazardous condition.
IMPORTANT: Natural gas pressure at unit gas connection must not be less than 5.0 in. wg or greater than 13.0 in. wg for all heat sizes.
A62-789
INLET HOOD
TEE
90 ELBOW
GROUND JOINT UNION
MANUAL MAIN SHUTOFF GAS VALVE
NIPPLE CAPFLUE HOOD
INDIV. GAS HEATER INPUT (MBH)
GAS NPT CONNECTION
(IN.)
MIN. INLET GAS PRESSURE NG
IN. WG (MBAR)
LPG IN. WG (MBAR)
75 0.75 5.0 (12.5) 11.0 (27.4) 100 0.75 5.0 (12.5) 11.0 (27.4) 150 0.75 5.0 (12.5) 11.0 (27.4) 200 0.75 5.0 (12.5) 11.0 (27.4) 250 0.75 5.0 (12.5) 11.0 (27.4) 300 0.75 5.0 (12.5) 11.0 (27.4) 350 0.75 5.0 (12.5) 11.0 (27.4) 400 1.00 6.0 (14.9) 12.0 (29.9) 500 1.00 6.0 (14.9) 12.0 (29.9) 600 1.00 6.0 (14.9) 12.0 (29.9)
LPG Liquid Propane Gas NG Natural Gas
30
Step 9 Install Gas Heat Condensate Drain Units with natural gas or LP heat also require a condensate drain for heater condensate collection. Condensate in gas heaters can occur during low operating temperatures or during heater start-up. The units gas heat condensate drain connection is located on the side of the unit. Refer to the DOAS Builder generated submittal for condensate location. All units must have an external trap for condensate drainage. Install a trap following A and B dimensions at minimum (see Fig. 9). Protect trap against freeze-up to avoid trap damage. If drain line is installed downstream from the external trap, pitch the line away from the unit at minimum 1/8 in. per 1 ft. of run. Use higher pitch on the line if required by local code. Do not use a pipe size smaller than the unit connection. Refer to the physical data table for condensate drain connection sizes. Failure to follow these guidelines could cause condensate not to drain properly, and potential intrusion of water into the space and/or other negative effects. It is also recommended to pre-prime traps before initial operation, or long shutdown periods. Open vents and drain plugs are recommended. See Fig. 9. NOTE: Check with local codes for any requirements for draining of gas heat condensate. Also verify any compatibility issues with roofing material or roof warranty and gas heat condensate disposal.
Step 10 Install Hot Water (Hot Water Units Only) Coils should be piped according to any relevant local codes. All external piping must be supported independently from the coil. External piping must be insulated to prevent freeze up. See Tables 1-5 for coil connection size and type. See Table 8 for hot water coil connection sizes. Control valves for hot water coils are to be field provided and installed. Coil freeze protection operation (open HW valve when coil temp approaches freeze limit) must be field provided.
Table 8 Hot Water Coil Connections
HOT WATER COIL PIPE ROUTING The piping for the Hot water coil can be routed either through the bottom of the unit or through the side of the cabinet (see Fig. 11). The contractor must make a hole for the supply and return water pipes and seal it appropriately.
Fig. 11 Hot Water Coil Pipe Routing Options
HOT WATER HEATING CONTROL The control valve for units equipped with hot water coils is to be field provided and installed. The control valve will also require field provided power (not from unit). The control signal for the control valve will be provided by the ALC controller by wiring the valve input signal to UO-6 (0 to 10V signal). Valve selection is to be determined by power requirements, pipe size, and water flow and temperature. See Fig. 12.
Fig. 12 Hot Water Coil - Control Valve Wiring
Step 11 Make Electrical Connections For units without the factory installed disconnect, power wiring should be connected to the main power terminal block located within the unit main control section. The power wiring connec- tions on units with non-fused factory disconnects should be made at the line side of the disconnect switch. The internal power and control wiring of these units is factory installed and each unit is thoroughly tested prior to shipment. See Fig. 16 and 17 for typical unit power and control wiring diagrams. Standard 62X units have an SCCR (short circuit current rating) of 5KA. A higher SCCR rating is available as a special order. Consult the unit nameplate to verify SCCR rating. Contact the local service representative if assistance is required. It is recommended that an independent 115-volt power source be brought to the vicinity of the rooftop unit for portable lights and tools used by the service mechanic, if a factory-installed conve- nience outlet is not on the unit. FIELD POWER SUPPLY The units are factory wired for the voltage shown on the name- plate. Main power wiring should be sized for the minimum wire ampacity shown on the nameplate. An external weather-tight dis- connect switch properly sized for the unit total load is required for each unit. Disconnect must be installed in accordance with local and/or national electric codes. This disconnect can be supplied by the factory or by others. Power wiring may enter the rooftop unit through the unit base and roof curbs on all models. Install conduit connectors at the entrance locations. External connectors must be weatherproof. All units must be properly grounded. The ground lug is provided for this purpose. DO NOT use the ground lug for connecting a neutral conductor. The unit must be electrically grounded in accor- dance with local codes, or in the absence of local codes, with the NEC (National Electrical Code) ANSI/NFPA (National Fire Protection Association) 70 1981. Once it is established that supply voltage is within the utilization range, check and calculate if an unbalanced condition exists be- tween phases.
CABINET ERV HOW WATER COIL CONNECTION (IN.)
B No 1 5/8 Yes 1 5/8
C / CL / CXL No 1 5/8 Yes 1 5/8
D / D XL No 3 1/8 Yes 3 1/8
31
Use the following formula to determine the percent of voltage imbalance.
% Voltage imbalance
Example: Supply voltage is 460-3-60. AB = 452 v BC = 464 v AC = 455 v
= 457 Determine maximum deviation from average voltage. (AB) 457 452 = 5 v (BC) 464 457 = 7 v (AC) 457 455 = 2 v
Maximum deviation is 7 v. Determine percent of voltage imbalance. % Voltage Imbalance = 100 x (7 / 457) = 1.53%
This amount of phase imbalance is satisfactory as it is below the maximum allowable 2%. .
Unit failure as a result of operation on improper line voltage or ex- cessive phase imbalance constitutes abuse and may cause damage to electrical components. Consult the wiring diagram furnished with the unit. These units are custom designed for each application. The unit wiring dia- gram is located inside the control panel of each unit. When installing units without a factory-installed disconnect, pro- vide disconnect per NEC Article 440 or local codes. For non- fused disconnects, size the disconnect according to the sizing data provided on unit nameplate. If a fused disconnect is used, deter- mine the minimum size for the switch based on the disconnect siz- ing data and then coordinate the disconnect housing size to ac- commodate the maximum overcurrent protection (MOCP) device size as marked on the unit informative plate. All field wiring must comply with NEC and local codes. Size wire based on MCA (minimum circuit amps) on the unit informative plate. See Fig. 16 and 17 for installation wiring diagrams.
SENSOR WIRING The 62X unit uses a variety of sensors for control purposes. The sensors provided will depend upon the features of the unit as de- tailed below. All units are equipped with an outdoor air sensor (OAT) and a combination of supply air temperature (SAT) and duct relative hu- midity sensor. The combination sensor should be installed in the supply duct downstream of the heat section. The sensor must be far enough downstream of the heat section so that the discharge air is adequately mixed for proper sensing. If the unit is not equipped with heat, the combination sensor is factory-installed in the cabinet. The sensor is connected to the unit controller as indicated in the wiring diagram with 18 AWG (American Wire Gage) shielded wire. Do not run the sensor wiring in the same conduit as high voltage wiring. A zone temperature sensor (ZS) may be provided as an acces- sory with units that have ordered the space temperature over- ride control function. The ZS should be installed in the space and connected to the unit controller at the Rnet connection as shown in the wiring diagram. See Tables 9 and 10 for Rnet wir- ing specifications. Use the specified type of wire and cable for maximum signal in- tegrity (see Table 9).
= 100 x max voltage deviation from average voltage average voltage
Average Voltage = 452 + 464 + 455 3
= 1371
3
IMPORTANT: If the supply voltage phase imbalance is more than 2%, contact your local electric utility company immediately.
A B C
MOTOR
CAUTION The correct power phasing is critical to the operation of the scroll compressors. An incorrect phasing will result in an alarm being generated and compressor operation lockout. Should this occur, power phase correction must be made to the incoming power. Damage to compressor could result.
WARNING Unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of elec- trical wire connected to unit ground lug in control compart- ment, or conduit approved for electrical ground when installed in accordance with NEC; ANSI/NFPA, latest edition, and lo- cal electrical codes. Do not use gas piping as an electrical ground. Failure to follow this warning could result in the in- staller being liable for personal injury of others.
WARNING Disconnect all power to the unit before performing mainte- nance or service. Unit may automatically start if power is not disconnected. Failure to follow this warning could cause per- sonal injury, death, and/or equipment damage.
32
To wire the sensor to the controller: 1. Partially cut, then bend and pull off the outer jacket of the
Rnet cable(s), being careful not to nick inner insulation. 2. Strip about 1/4 in. of the inner insulation from each wire (see
Fig. 13). 3. Wire each terminal on the sensor to the same terminal on the
controller. Table 10 shows the recommended Rnet wiring scheme.
Fig. 13 Rnet Cable Wire
Table 9 Rnet Wiring Specifications
LEGEND
Table 10 Rnet Wiring
NOTE: The wire should be connected to the terminal shown.
Step 12 Open Exhaust Damper (Units with Optional Exhaust or Energy Conservation Wheel Only) The optional exhaust damper is secured to the exhaust assembly for shipping. Remove the two screws holding the damper to the panel. Damper should be free to swing open during operation (see Fig. 14).
Fig. 14 Optional Exhaust Damper
Step 13 Install all Accessories After all of the factory-installed options have been adjusted, install all of the field-installed accessories. Refer to the accessory instal- lation instructions included with each accessory.
Step 14 Configure Controls The unit controller is pre-configured with default set points as de- tailed below. If changes to the set points are desired, this may be accomplished via Equipment Touch device (see Fig. 15). See the Controls, Operation, and Start-up manual.
Fig. 15 Equipment Touch
RNET WIRING SPECIFICATIONS
DESCRIPTION 4 conductor, unshielded, CMP, plenum rated cable
CONDUCTOR 18 AWG MAXIMUM LENGTH 500 ft
RECOMMENDED COLORING Jacket: white Wiring: black, white, green, red
UL TEMPERATURE 32 to 167 F VOLTAGE 300-vac, power limited LISTING UL: NEC CL2P, or better
AWG American Wire Gage CMP Communications Plenum Cable NEC National Electrical Code UL Underwriters Laboratories
WIRE TERMINAL RED +12-v
BLACK Rnet WHITE Rnet+ GREEN Gnd
OUTER JACKET
INNER INSULATION.25 IN.
A62-788
33
SEQUENCE OF OPERATION 100% outdoor air units 62X The 62X unit is designed to condition 100% outdoor air to room neutral conditions for ventilation purposes. As such, the 62X unit is not designed to, nor will the 62X unit maintain space cooling, heating or relative humidity conditions. A separate ancillary device must be installed to provide primary space heating, cooling, and humidity control. The controller is turned on by a switch located on its front, upper left corner. Several Occupancy Control options are available for starting the unit. These can be selected from the Equipment Touch display pad on the Controls screen (requires user password). The Resident Program has an adjustable scheduler that uses the internal time clock to allow for separate Sequences for Occupied and Unoccupied periods. This can be accessed from the Equipment Touch display pad on the Schedules screen (requires user password). NOTE: All temperature-related events have an additional 10-second (fixed) delay on make to allow temperatures to settle. OCCUPIED MODE When the Equipment Touch Schedule calls for the start of the Occupied mode, and the controller has verified that there are no fault or shutdown conditions, after a 30-second (fixed) delay the unit goes into Occupied mode. Outdoor Air Damper (OD) After the unit goes into Occupied mode, the Outdoor Air (OA) damper will open. As the OA damper opens, the Outdoor Air Damper Actuator (OADA) auxiliary switches close. The OA damper stays open until the system reaches the end of the Occupied mode period. It will remain open until the supply fan turns off. After the supply fan turns off, the OA damper will close. Supply Fan (SF) The SF Air Monitoring Station (SF-AMS) is included to monitor the SF air flow only. As the OA damper opens, the OADA auxilia- ry switch (adjustable) will close and the SF will turn on. The SF shall operate continuously while the unit is in the Occupied mode. When the system reaches the end of the Occupied mode period, the SF will continue to run for an additional 2 minutes before turn- ing off. SF-VSC: Supply Fan with Variable Speed Control The
SF-VSC will modulate its speed based upon the SF Differ- ential Pressure Transmitter (SF-DPT) signal to maintain the supply duct static pressure set point.
Optional For constant air volume (CAV), select Manu- al Override in the Equipment Touch keypad and input the required speed (%) as determined in the field by Test and Balancing.
Exhaust fan (EF) At the same time the SF turns on, the EF will be enabled to run. The EF shall be enabled to run continuously while the unit is in the Occupied mode. When the system reaches the end of the Occu- pied mode period, the EF will be enabled to run for an additional 2 minutes before turning off. EF-VSC: Exhaust Fan with Variable Speed Control If
the EF Differential Pressure Transmitter (EF-DPT) signal is above the building static pressure set point, the EF-VSC will modulate its speed based upon the EF-DPT to main- tain the set point. If the EF-DPT signal is below the build- ing static pressure set point, the EF will modulate down to 0% (adjustable) speed.
Optional For constant air volume (CAV), select Manu- al Override in the Equipment Touch keypad and input the required speed (%) as determined in the field by Test and Balancing.
Energy Conservation Wheel (ECW) After the OA damper opens and the SF turns on, the ECW turns on. The ECW By-Pass Damper will open when the ECW is off and it will close when the ECW is on. ECW Standard Operation When the OAT is 3F (adjust-
able) or more above or below the RAT, the ECW will be on, otherwise it is off.
ECW with VFD Controlled Defrost (WM-VFD) When the OAT is 3F (adjustable) or more above or below the RAT, the ECW will be on. It will be off, if the OAT is less than 3F (adjustable) above or below the RAT. It will de- crease speed or stop as the WExAT goes below 25F (ad- justable) to allow for wheel defrosting. It will start back up and increase speed when the WExAT rises toward 25F (adjustable) or more.
Cooling Mode Cooling mode is available when the Entering Coil Air Tempera- ture (ECAT) is above the ECAT cooling lower limit (55F, adjust- able) and there is a demand for cooling. When the Entering Coil Air Temperature (ECAT) is 1F (adjustable) or more above the Supply Air Temperature (SAT) cooling set point (72F, adjust- able), compressor no. 1 turns on. When the SAT is 2F (adjust- able) or more above the SAT cooling set point (72F, adjustable), compressor no. 2 turns on not less than 10 minutes (adjustable) after compressor no. 1 turned on. When the SAT is 2F (adjust- able) or more below the SAT cooling set point (72F, adjustable), compressor no. 2 turns off. When the ECAT is 1F (adjustable) or more below the Supply Air Temperature (SAT) cooling set point (72F, adjustable), compressor no. 1 turns off. Optional When enabled, if there is a call for first stage
cooling, second stage cooling will be enabled after a 10-minute (adjustable) delay. Both compressors modulate to maintain the cooling set point. Default is OFF. Com- pressor enabling logic includes a 5-minute (fixed) mini- mum run-time and a 5-minute (fixed) minimum time off delay to prevent compressor short cycling.
Digital Compressors The controller regulates the ca- pacity of the digital compressor by rapidly loading and un- loading the compressor in 15-second intervals. The digital compressor will modulate based upon the DX Leaving Air Temperature (DX LAT) sensor and set point (55F, adjust- able). If the DX LAT drops to 38F or less, the controller will fix the compressor at 10% (adjustable). If the DX LAT drops to 35F or less for 10 minutes, the controller will is- sue an alarm and the compressor stops. When the DX LAT warms back up to 55F or more, the compressor turns back on. If there is a current call for first stage cooling and com- pressor no. 1 is shut down due to an alarm (HPS1, LPS1, or DX LAT1), compressor no. 2 will be turned on to take its place until it returns.
Hot Gas Reheat (HGRH) Modulating When the SAT is 1F (adjustable) or more below the SAT cooling set point, HGRH turns on and modulates to maintain the SAT cooling set point. When the SAT is 2F (adjustable) or more above the SAT cooling set point, HGRH turns off.
Switchable Subcooling When either of the compressors are enabled and the SAT is equal to or below the SAT cool- ing set point (72F, adjustable), the subcooling coil is en- abled. When the SAT is 1F (adjustable) or more above the SAT cooling set point (72F, adjustable), the subcooling coil is disabled.
34
Dehumidification Mode Dehumidification Mode is available if the ECAT is 1F (fixed) above the dehumidification lower limit of 60F (adjustable) and there is no call for heating. When the Entering Coil Air Dew Point (ECDP) is 1F (adjustable) or more above the Supply Air Dew Point (SADP) set point (55F, adjustable), dehumidification mode is enabled. After the minimum time-off delay, compressor #1 turns on. When the SADP is 2F (adjustable) or more above the SADP set point, and after minimum time-off delay, compressor #2 turns on not less than 10 minutes (adjustable) after compressor #1 turns on. When the SADP is 1F (adjustable) or more below the SADP set point, compressor #2 turns off. When ECDP is 2F (ad- justable or more below the SAFP set point, compressor #1 turns off and dehumidification mode is disabled. Digital Compressors The controller controls the capaci-
ty of the digital compressor by rapidly loading and unload- ing the compressor in 15-second intervals. The digital compressor will modulate based upon the DX LAT sensor and the DX LAT Dehumidification set point (55F, adjust- able). If the DX LAT drops to 38F or less, the controller will fix the compressor at 10% (adjustable).
Hot Gas Reheat (HGRH) Modulating When the SAT is 1F (adjustable) or more below the SAT cooling set point, HGRH turns on and modulates to maintain the SAT cooling set point. When SAT is 2F (adjustable) or more above the SAT cooling set point, HGRH turns off.
Switchable Subcooling When either of the compressors are enabled and the SAT is equal to or below the SAT cool- ing set point (72F, adjustable), the subcooling coil is en- abled. When the SAT is 1F (adjustable) or more above the SAT cooling set point (72F, adjustable), the subcooling coil is disabled.
Heating Mode Heating mode is available when the OAT is below the OAT heat- ing upper limit (60F, adjustable) and there is a demand to temper outdoor air to room neutral conditions. When the ECAT is 1F (adjustable) or more below the ECAT heating set point (50F, ad- justable), heating is enabled and operates to maintain SAT heating set point (70F, adjustable). When ECAT is 1F (adjustable) or more above ECAT heating set point (50F, adjustable), heating is disabled. STAGED HEAT (ELECTRIC HEAT) 2-STAGE HEAT Terminal W1 turning on enables first-stage heating. As SAT goes further below the SAT heating set point (70F, adjustable), termi- nal W2 energizes and second-stage heating is enabled. As SAT ris- es, terminal W2 turns off and second-stage heating turns off. As the SAT goes 1F (adjustable) or more above the SAT heating set point (70F, adjustable), terminal W1 turns off and first-stage heat- ing turns off. STAGED HEAT (ELECTRIC HEAT) 4-STAGE HEAT Terminal W1 turning on enables the Heating Analog Relay Module (HARM) on the control panel which activates the differ- ent stages of heating. As the SAT goes further below the SAT heat- ing set point (70F, adjustable), the different stages will turn on. As the SAT goes further above the SAT heating set point (70F, adjustable), the different stages will turn off. STAGED HEAT (GAS HEATER) 2-STAGE Terminal W1 turning on enables first-stage heating. As SAT goes further below the SAT heating set point (70F, adjustable), termi- nal W2 energizes and second-stage heating is enabled. As SAT ris- es, terminal W2 turns off and second-stage heating turns off. As the SAT goes 1F (adjustable) or more above the SAT heating set point (70F, adjustable), terminal W1 turns off and first-stage aux- iliary heating turns off.
STAGED HEAT (GAS HEATER) 4-STAGE Terminal W1 turning on enables the Heating Analog Relay Mod- ule (HARM) on the control panel which activates the different stages of heating. As the SAT goes further below the SAT heating set point (70F, adjustable), the different stages will turn on. As the SAT goes further above the SAT heating set point (70F, adjust- able), the different stages will turn off. Gas Heater Terminal W1 turning on energizes the gas heat controller and first- stage axillary heating is enabled. If the SAT is 1F (adjustable) or more above the SAT heating set point (70F, adjustable) termi- nal W1 turns off, which deenergizes the gas heat controller, and first-stage axillary heating is turned off. All other stages operate as above. MODULATED HEAT SCR Electric Heat: On demand to temper outdoor air to room neu- tral conditions, the controller modulates the electric heating SCR in order to maintain the SAT heating set point (70F, adjustable). Modulating Gas Heater On demand to temper outdoor air to room neutral conditions, the controller modulates the gas heat controller to control the gas flow in order to maintain the SAT heating set point (70F, adjustable). Modulating Hot Water Heat On demand to temper outdoor air to room neutral conditions, the controller modulates the hot water valve to control the hot water flow in order to maintain the SAT heating set point (70F, adjustable). UNOCCUPIED MODE When the Occupancy Controlindicates the end of the Occupied mode, the compressor(s) and outdoor fan(s) will turn off (subject to minimum run-time) or the heating system will turn off. The SF and EFwill continue to run for 2minutes before turning off. After this, the ECW will turn off and the OA damper will close. The unit is now off. Safety Switches High Pressure Switch (HPS1): If HPS1 is open, compres-
sor no. 1 will turn off and the controller will issue an alarm. After manually resetting HPS1, the HPS1 alarm will reset. Following a minimum time off delay, compres- sor no. 1 will turn on. If the controller records 3 high pres- sure start/restart failure incidents within 1 hour, compres- sor no. 1 is locked out and the controller will issue an alarm. The compressor lockout can be reset in the Equip- ment Touch display pad or by cycling the power of the controller. This sequence is the same for compressor no. 2, Y2, and HPS2.
Low Pressure Switch (LPS1): If LPS1 is open after the LPS1 bypass time, the controller will issue an alarm and compressor no. 1 turns off. After 30 seconds (fixed), the LPS1 alarm will reset. Following a minimum time off de- lay, compressor no. 1 will turn on. If the controller records 3 low pressure start/restart failure incidents within 1 hour, compressor no. 1 is locked out and the controller will issue an alarm. The compressor lockout can be reset in the Equipment Touch display pad or by cycling the power of the controller. This sequence is the same for compressor no. 2, Y2, and LPS2.
SAFETY SHUTDOWN Smoke Detector: When a smoke detector (SD) is provided, it is wired directly to the controller. If smoke is detected, the control- ler will shut down the unit. Other instances where shutdown will occur are as follows: if a compressor fails to start 3 times in an hour due to high/low pressure switch or DX leaving air tempera- ture lock out, or if the controller detects an SAT sensor failure.
35
REFRIGERANT CHARGING The 62X series units come from the factory with the appropriate operating charge of R-410A. Charge adjustment might be necessary if subcooling temperatures are too high due to excess refrigerant in the system that is subse- quently backed up in the condenser. This symptom could also in- dicate a failed TXV or line restriction. If there is no line restriction and the TXV is working correctly, reclaim enough R-410A refrig- erant so the system ambient compensated pressure readings are at the desired levels. Use a refrigerant recovery unit to safely remove the refrigerant, because it is illegal to release R-410A refrigerant into the atmosphere. After the addition or removal of refrigerant, the unit must be allowed to stabilize for at least 10 minutes before reaching any conclusions if any other adjustments need to be made. All 62X series units are equipped with hot gas reheat or liquid sub- cooling reheat. Operation of the reheat system must be disabled prior to charging unit. To disable, use the unit control interface to disable reheat operation, or disconnect the power or control signal to the reheat valve or solenoid assembly. The type of unit and operation determines the ranges for liquid subcooling and evaporator superheat. The system is overcharged if the subcooling temperature is too high and the evaporator is ful- ly loaded. High superheat results in increased subcooling. The sys- tem is defined as undercharged if the superheat is too high and the subcooling is too low. To correct an undercharged system, add refrigerant to reduce the superheat and raise subcooling. If the subcooling is correct and the superheat is too high, the TXV may need adjustment to correct the superheat. When checking the charge, units with hot gas reheat must be checked with the hot gas reheat valves closed and the sys- tem in cooling mode. To confirm proper charge, the unit should be left in reheat mode to check for proper operation. See Table 11 for proper charge levels.
Table 11 Ambient Charge 100% Outside Air and Combined Unit Subcool and Superheat
NOTE: Subcooling readings must be taken with the reheat circuit dis- abled. To calculate subcooling temperature, convert liquid line head pressure to condensing temperature. Then, subtract the liquid line tem- perature.
Step 15 Unit Start-Up Complete unit start-up. Refer to the unit Controls, Operation, and Start-up manual for start-up check lists and start-up instructions.
Step 16 Test Mode and Fan Balancing Carrier recommends all 62X unit undergo proper air balancing to verify unit supply and exhaust airflow. Consult the Controls, Op- eration, and Start-up manual.
Typical Wiring Diagrams See Fig. 16 and 17 for typical wiring diagrams.
AMBIENT AIR TEMP 95F 85F 75F 65F 55F 45F
Subcool 10-12F No reheat circuit in unit
In heating mode
Subcool 12-15F No reheat circuit in unit
In heating mode
Subcool 13-16F No reheat circuit in unit
In heating mode
36
Fig. 16 Installation Wiring Diagram
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65 WIRING DIAGRAM #0962I-5322 | 62XJ04PBJT-JFATACW | 208/230/460/575-3-60 | SHEET 1 OF 8 | 10/31/2017 DWN
LWF CHK
DS .
EF-CS
SF-CS
PDB
PM
CS
WM-CS
CCH1
NOTE: SEE T3 ON SHEET #2 FOR WIRING
CONTINUATION
G-14
1.
EGB
L3
L2
L1
EGB
BL-##
BK-##
L3 T3
L2 T2
L1 T1
R-##
BL-##
BK-##
R-## L3
L2
L1
T3
T2
T1
CM1BL-##
BK-##
R-## T3
T2
T1 R-14
BK-14
T1 50/60HZ
0V 20 8V
23 0V
46 0V
11 5V
24 V
0V
H4 H3 H2 H1
X3X2XFX1
EFM1 G-14
G-14
F3
F1
4 (L2)
3 (L1)
MSP-CC1 CC1
CC1-A1
CONNECT TO TERMINAL H2 FOR UNITS RATED 230V. CONNECT TO TERMINAL H3 FOR UNITS RATED 208V. SEE 575/600V TRANSFORMER FOR CORRECT WIRING CONNECTIONS ON UNITS RATED 575V.
MSP-WM
BL-14
BK-14
L3 T3
L2 T2
L1 T1
R-14
BL-14
BK-14
R-14
WM G-14BL-14
BK-14
R-14 WMVFD
UL1
VL2
WL3
G-14
MSP-OF1
L3 T3
L2 T2
L1 T1
OFM1 G-14
OF1VFD
UL1
VL2
WL3
G-14
BL-14
BK-14
R-14
BL-14
BK-14
R-14
BL-14
BK-14
R-14
White 0-10vdc
OUTDOOR FAN MOTOR VFD (OF1VFD)CONTROL TERMINAL STRIP
CC1-A1
Red +12-30VDC
OF1VFD
24V
8
6
DI3 10
DI1
AI1
DI-C 7
2
Black Common
R
Y
GND 3
MSP-SF1
BL-#
BK-#
L3 T3
L2 T2
L1 T1
R-#
SFM1BL-#
BK-#
R-#
Rosenburg SFM
SFM CONTROL
SF1R
9 5
+24V
11
10 Enable
Y
Y
See ALC Page For 0-10vdc Wiring Connecon
MSP-EF1
BL-#
BK-#
L3 T3
L2 T2
L1 T1
R-#
BL-#
BK-#
R-#
Rosenburg EFM
EFM CONTROL
EF1R
9 5
24V
11
10 Enable
O
O
See ALC Page For 0-10vdc Wiring Connecon
5 3 EATON WMVFD
WMVFD CONTROL
WMR
9 5
24V
8
6 DI1
PR
PR
See ALC Page For 0-10vdc Wiring Connecon
3 GND
F2 4 (L2)
T3
Line Voltage96 VA
CLASS 2 50/60HZ
24V
F9
F10
G-14
37
Fig. 16 Installation Wiring Diagram (cont)
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130 WIRING DIAGRAM #0962I-5322 | 62XJ04PBJT-JFATACW | 208/230/460/575-3-60 | SHEET 2 OF 8 | 10/31/2017 DWN
LWF CHK
DS .
UNLOADER SOLENOID #1
TB1
HP1TB1 CC1Enable Compressor #1 Y1 CBL
A2A1
CONTINUED ON SHEET 3
1,2,3,4, 79Y
HP1 R R HPR1
1413 BL CY 266
TB1 HP1 Y
CBL TB1
Enable Unloader #1 U1 PR
T3
96 VA CLASS 2 50/60HZ
24VTB4
G-14
Line Voltage
TB4 K3 K4
NOTE: SEE T3 ON SHEET 1 FOR WIRING CONTINUATION
PM AUX
NO C R
PM
NOTE: SEE T1 ON SHEET 1 FOR WIRING CONTINUATION
T1 50/60HZ
0V 20 8V
23 0V
46 0V
11 5V
24 V
0V
H4 H3 H2 H1
X3X2XFX1 G-14
R-14
R-14R-14
BL-14
CB
TB2 TB2
PM
8 1
8
7 6 Remove jumper when eld installed safees are used
R-14 CR BLJ2J1
Y
38
Fig. 16 Installation Wiring Diagram (cont)
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
TB1
TB1
TB1
TB1
TB1
TB1
TB1 149
TB1
TB1
TB1
TB1
R R
Enable Wheel Motor WM
Enable Outdoor Air Damper Actuator OD PR OADA BKR
BL
CONTINUED ON SHEET 2
Enable Heang BL CHR 1413
Heat Enable
WW1 BCTL
BL
See separate Modulang Gas Furnace Drawing
EF1R
SF1R
BL
1413
Enable Supply Fan G
Enable Hot Gas Reheat RH PR
BL
PK
50
RHR 1413
BK
136, 207, 219
425
24VAC
BOS1RHR BLBK
12 8
BL 1413
WMR 1413
BL 58PK
41
C
C
C
C
39
Fig. 16 Installation Wiring Diagram (cont)
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
S+ S-
B W
G R
42 +4
2 SL
C NP
O -
IBG Part # 0872P-0105
REF
1 2
3 4
5 6
7 8
O N
2500
6386 STEPS
1500
1 2
3
1000 600 300
CN 1
1200
0-10V
4-20mA
12345
SW1
3193 O
FF O
FF O
FF O
N O
FF O
FF O
FF O
N O
FF O
N O
N O
FF 500
O FF
O FF
O N
45678
STD D
irecon Bipolar
O FF
STD Response 200pps
STD operaon
Reverse U
nipolar O
N
Q uick
400pps Close VLV
Open Green
Close Yellow
Status Red
LED1LED2LED3
SW1 SDR-3/3X Sengs
SW1 Normal Sengs
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
MRV1
W
BK
G
R
GY
RHR
9 1 PR
T2
24V
5 24V
40 VA CLASS 2 60 HZ
O BR
TB1 R C
TB3 K2K1
4 BK
W
O
BR
0-10VDC Output
Gnd
UO-4
See ALC PAGE (MRC)
MODULATING REHEAT CONTROL VALVE BOARD
For normal operaon the CN1" jumper should be at the 0-10V pin posion. SW1 dip switch bank should be set as shown below based o the modulang valve used.
To force the reheat valve closed place a jumper between the CLS and REF terminals.
To force the reheat valve open place a jumper between the OPN and REF terminals.
1 2
3 4
5 6
7
O N
SW1
When using an SDR-3/3X Valve (0564P-0002), use SDR 3/3X SW1 settings. All other modulating valves, use SW1 Normal Settings. See label on valve to insure the proper setting is used for SW1.
40
Fig. 16 Installation Wiring Diagram (cont)
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325 WIRING DIAGRAM #0962I-5322 | 62XJ04PBJT-JFATACW | 208/230/460/575-3-60 | SHEET 5 OF 8 | 10/31/2017 DWN
LWF CHK
DS .
G
W
ZAT ZS Room Sensor
Green
G nd
RN ET
+ RN
ET -
+1 2V
G nd
Rn et
+ Rn
et -
+1 2V
Se ns
e
EQUIPMENT TOUCH
G nd
Rnet+ Rnet-
+24VAC
Red Black
White
FIELD INSTALL
4
K3
K4
-12V
Rnet +
Rnet -
+12V
TB4
TB5
4
BK
R
Equipment Touch Connector
(Blue)
ECA-T/RH
Install OAT under the OA hood, sensing the ambient temp.
O OnAuto
Universal Input Mode Select
Aux Power Out
Power
O On
Port 1
Rnet Gnd
RNET+
RNET-
+12V
UO-8
UO-7
UO-6
UO-5
Gnd 8 UO-4
+ 7
Gnd 6 UO-3
+ 5
Gnd 4 UO-2
+ 3
Gnd 2 UO-1
+ 1
Gnd 8
+ 7
Gnd 6
+ 5
Gnd 4
+ 3
Gnd 2
+ 1
UI-8
UI-7
UI-6
UI-5
8 Gnd UI-4
7 +
6 Gnd UI-3
5 +
4 Gnd UI-2
3 +
2 Gnd UI-1
1 +
UI-12
UI-11
UI-10
UI-9
Rnet Local Access
Gnd Rnet+ Rnet- +12V Sense
8 Gnd
7 +
6 Gnd
5 +
4 Gnd
3 +
2 Gnd
1 +
8 Gnd
7 +
6 Gnd
5 +
4 Gnd
3 +
2 Gnd
1 +
Gnd
24VAC
0 5
0 5
1 2
3 4
5 6
7 8
10's
1's Module Address
NET +
NET -
Shield
Port 1 BT485
Port 2a BT485
485 Port 1ARC- 156
2 Wire
EIA- 485
4 Wire
EIA- 232
Port 2a
XNET +
XNET -
Gnd
Port 2a
NET +
NET -
n/c
n/c
Signal Ground
Tx +
Tx -
Rx +
Rx -
Tx
Rx
DTR
DCD
2 wire 4 wire EIA-232
mA Thermistor/ Dry Contact/
RTD
Volts
O
2 1
Assigned Default
On O
BAS Port
IP Addr
Enhanced Access Port 2a
BA Cn
et
BAS Port Sengs BAUD 4 5 Protocols 6 7 8 9600 O O MSTP (m) O O O 19.2K O On MSTP (s) On O O 38.4K On O PTP O On O 76.8K On On N2 On On O
Modbus O O On Lon SLTA On O On Lon Opon O On On
Fuse
24VDC
200mA maximum
100 LAN LINK
10/100 BaseT Ethernet Port E1
Xnet Expansion
See BAS Table Below
+ 3V
GndExternal Baery
Ext. Ba. Int. Ba.
0-10Vdc 0-20 mA Relay Pot
UO-1
UO-2
UO-3
UO-4
UO-5
UO-6
UO-7
UO-8
Set Pot Full CW
Port 2b
Format
I/O PRO 812u CONTROLLER
SEE TB4 ON UNIT WIRING DIAGRAM
R
TB4
BL
FOR FIELD: BACNET
CONNECTION
FACTORY WIRING FIELD WIRING TERMINAL BOARD
SYMBOL LEGEND
USE 18 AWG WIRE MINIMUM. TO MINIMIZE INTERFERENCE PROBLEMS: USE SHIELDED WIRE ON ALL ANALOG INPUTS
AND OUPUTS. DO NOT RUN 0-10 VOLT DC SIGNAL WIRING IN THE SAME CONDUIT AS LINE VOLTAGE WIRING OR WITH WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS SUCH AS CONTACTOR AND RELAY COILS. GROUND ONE END OF THE DRAIN (SHIELD) WIRE.
WHEN 0-10 VOLT DC SIGNAL WIRING MUST CROSS CLOSE TO CABLE OR NONMETALLIC CONDUIT CONTAINING LINE VOLTAGE WIRING OR WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS, IT MUST CROSS PERPENDICULAR (90 DEGREES) TO IT.
KEEP THE 0-10 VOLT DC SIGNAL WIRING AS SHORT AS POSSIBLE.
LON
1 2
Port 2bECH ELO
N
LonWorks Card (oponal)
FOR FIELD: BAS OR EMS CONNECTION
3V Lium Baery CR-123A
- +
Error Codes: Chase = OK 0 = Download Required 1 = Control Program Error 2 = RAM full 3 = Comm set-up error 4 = System error 8 = Formang Blinking Dot = Run
8.
DO NOT APPLY 24V AC TO UNIVERSAL OUTPUTS External 24VDC relay coil only
24V AC R
TB-A
GND
GND
24VDC
USE SHIELDED WIRE FOR ALL ANOLOG INPUTS
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
24VDC
4
BK
WW
BK
Rosenburg EC motor, 0-10vdc
SFM
0-10 vdc
GND 4
5
4 W
BK BK
W EFM
0-10 vdc
GND 4
5
Rosenburg EC Motor, 0-10vdc
4
4
BK
WW
BK
BK
WW
BK
-
+
WMVFD
AI1
DI-C 7
2
4
BK
WW
BK
Wheel Motor VFD, 0-10vdc
Heat Modulang See Elec. Heater or Gas Furnace for exact wiring connecons
4
2tem p
sensor Vout
com V in pw
r
BK
G
DxLAT1
BK
W
DxLAT1: INSTALL AFTER DX COIL #1 UPSTREAM OF REHEAT COIL
SA-T/RH Field install
and wire 1tem p
sensor Vout
com V in pw
r
4
Note: THE SUPPLY/DISCHARGE AIR TEMPERATURE/RELITIVE HUMIDITY (SA-T/RH) IS FACTORY SUPPLIED FOR FIELD INSTALLATION IN SUPPLY AIR DUCT. SENSOR MUST BE INSTALLED DOWNSTREAM OF HEATER WHERE IT CANNOT SEE ANY HEATING ELEMENTS AND WHERE SUFFICIENT MIXING OF DISCHARGE AIR OCCURS. USE 18 AWG SHIELDED WIRE. DO NOT RUN SENSOR WIRING IN THE SAME CONDUIT AS LINE VOLTAGE WIRING OR WITH WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS SUCH AS CONTACTOR AND RELAY COILS.
1
W
4
2
4
OAT
BK
W
4
RAT
BK
W
RAT: INSTALL SENSING THE RETURN AIR UPSTREAM OF ECW
4
WExAT
BK
W
WExAT: INSTALL SENSING THE EXHAUST AIR DOWNSTREAM OF ECW
SENSORS DESCRIPTION CFI Clogged Filter Indicator
DPT-260 Dierenal Pressure Transmier SAT Supply Air Temperature Sensor
OA-T/RH Outdoor Air Temp/Relave Humidity Sensor SA-RH Supply Air Relave Humidity
ZS Zone Temperature Sensor - Standard CC1-CS, CC2-CS Compressor #1 & #2 Current Sensor
DxLAT Dx Leaving Air Temperature Sensor WM-CS Wheel Motor Current Sensor
SF-APS, EF-APS Supply Fan / Exhaust Fan Air Press. Switch WFR Water Flow Relay
LP1, LP2 Low Pressure Switch, Ckt. #1 & #2 SD Smoke Detector
K3
K4
5
9
Unloader Relay #1
R
PR Unloader #1
U1
R TB1
GY
PR 14
13
2
WARNING!!!
DO NOT leave dip switch #1 ON. This will result in loss of Equipment Touch and Network Communicaons.
Install ECA-T/RH aer the ECW, sensing the modied temp/humidity.
3
3
MRC
+S
-S Modulang Reheat, 0-10vdc
ALL FIELD INSTALLED SENSORS SHOULD BE WIRED TO THE CONTROLLER FOR FACTORY TESTING WITH TEMPORARY WIRING AND LEFT IN THE UNIT AFTER TEST. TEMPORARY
WIRING SHOULD BE REMOVED FOR PERMANENT INSTALLATION DURING UNIT INSTALLATION. LABEL
SENSORS PER THE WIRING DIAGRAM.
To wall mount the Equipment Touch, remove the factory installed cable and wire +24VAC to TB4 K3 and wire Gnd to TB4 K4. If there is a ZS sensor installed, wire Rnet+ and Rnet- to the ZS sensor Rnet+ and Rnet- terminals. Otherwise, wire to TB5 Rnet+ and Rnet-
41
Fig. 16 Installation Wiring Diagram (cont)
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390 WIRING DIAGRAM #0962I-5322 | 62XJ04PBJT-JFATACW | 208/230/460/575-3-60 | SHEET 6 OF 8 | 10/31/2017 DWN
LWF CHK
DS .
Heang Enable
Y
R
BK
W
SEE UNIT 24V CONTROL TERMINAL BOARD
PK
OD
WM
W1
RH
Y1
G
R
Hot Gas Reheat Enable
Compressor #1 Enable
Supply Fan Enable
Outdoor AIr Damper Enable
ECW Enable
HP1Y
PR
BR
OADA-A (Adj.)
NO COM
WM-CS
CC1-CS
LP1
HPR1
9 5
CFI
Install Condensate Overow Switch COS At Lowest
Point of Drain PanCOS
EMR FIELD WIRED; PROVIDED BY
OTHERS (EMR is disabled by Defualt)
PR
PR
PK
PK
GY
BK
Y
Y
GY
W
W
GY
BK
GY
BK
W
G
ALC EXPANDER BOARD CONNECTIONS
FACTORY WIRING FIELD WIRING TERMINAL BOARD
SYMBOL LEGEND
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
Power on
Xnet Baud
Gnd
24VAC
I/O FLEX EX8160 EXPANDER (0843P-0548)
R
Gnd 16 UI-16
+ 15
16
Xnet Remote
Expansion
15
1
2
4
5
3
7
8
6
10
11
9
13
14
12
BO-8
Gnd
Xnet-
Xnet+
Gnd 14 UI-15
+ 13
Gnd 12 UI-14
+ 11
Gnd 10 UI-13
+ 9
Gnd 8 UI-12
+ 7
Gnd 6 UI-11
+ 5
Gnd 4 UI-10
+ 3
Gnd 2 UI-9
+ 1
Gnd 16 BI-8
+ 15
Gnd 14 BI-7
+ 13
Gnd 12 BI-6
+ 11
Gnd 10 BI-5
+ 9
Gnd 8 BI-4
+ 7
Gnd 6 BI-3
+ 5
Gnd 4 BI-2
+ 3
Gnd 2 BI-1
+ 1
Universal Inputs 9-16
0-5V Therm/
Dry
0-5V
Therm/Dry
Digital Inputs 1-8
BO-7
BO-6
BO-5
BO-4
BO-3
BO-2
BO-1
Xnet Remote
Expansion
Gnd
Xnet-
Xnet+
ALC, IO PRO 812u
SEE SHEET 5
05
Expander Address
62.5k
500k
Error
Run
BO-1 LED
BO-2 LED
BO-3 LED
BO-4 LED
BO-5 LED
BO-6 LED
BO-7 LED
BO-8 LED
BL
SEE TB4 ON UNIT WIRING DIAGRAM TB4
K3
K4
PK
PK
PR
PR
SF-CS
EF-CS
SFR
10 6
EFR
12 8
42
Fig. 16 Installation Wiring Diagram (cont)
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
FIELD POWER SUPPLY 208/230/460/575-3-60. MINIMUM CIRCUIT AMPACITY AND MAXIMUM SIZE AND TYPE OF BRANCH-CIRCUIT SHORT-CIRCUIT AND GROUND-FAULT PROTECTION PER UNIT RATING PLATE. PROVIDE DISCONNECTING MEANS AS REQUIRED.
TYPICAL MOTORS AND COMPRESSORS SHOWN. SEE CONNECTION DIAGRAM ON MOTOR OR COMPRESSOR FOR ACTUAL WIRING DETAIL.
IF POWER MONITOR OUTPUT CONTACTS DO NOT TRANSFER WHEN POWER IS APPLIED TO UNIT (LED GLOWS RED DURING FAULT CONDITIONS): 1. VERIFY THAT ALL THREE PHASES ARE PRESENT AND ARE OF THE CORRECT VOLTAGE. IF ALL THREE PHASES ARE PRESENT AND ARE OF THE CORRECT VOLTAGE, PHASE ROTATION MAY BE INCORRECT. PERFORM STEP 2. 2. DISCONNECT POWER TO THE UNIT. VERIFY THAT POWER IS IN FACT DISCONNECTED. SWAP ANY TWO OF THE THREE UNIT POWER SUPPLY WIRES. WHEN POWER IS REAPPLIED, OUTPUT CONTACTS SHOULD NOW TRANSFER.
HP 208/230 VOLT 460 VOLT 1/2 THRU 3 14 AWG 14 AWG
5 12 AWG 14 AWG 7-1/2 10 AWG 14 AWG
10 8 AWG 12 AWG 15 6 AWG 12 AWG 20 4 AWG 10 AWG
# : BLOWER MOTOR MINIMUM WIRE SIZE
FUSE NO. CLASS VAC AMPS-208/230V AMPS-460V XFMR TIME DELAY CC 600 3 2 350VA YES CC 600 2 1.5 250VA YES CC 600 2 1.5 200VA YES CC 600 1.5 3/4 150VA YES
F2, F9, F10 CC 600 1 1 N/A YES CC 600 16 16 350VA YES CC 600 10 10 250VA YES CC 600 10 10 200VA YES CC 600 6 6 150VA YES
CB
FUSE TABLE
F1, F3
INSTALL THE LIQUID LINE SOLENOID VALVE (LLS) and BLEED OFF SOLENOID (BOS) IN AIR HANDLING UNIT (AHU) FOR FIELD WIRING.
2
1
6
8
ABBREVIATION COLOR BK BLACK BL BLUE BR BROWN G GREEN O ORANGE PK PINK PR PURPLE R RED W WHITE Y YELLOW
WIRE COLOR LEGEND
NOTE: NUMBER PLACED AFTER DASH FOLLOWING COLOR CODE INDICATES WIRE GAGE. EX. - BK-12 IS A BLACK, 12 AWG WIRE. NO NUMBER AFTER COLOR CODE INDICATES 18 AWG WIRE. EX. - BK IS A BLACK 18 AWG WIRE.
Wire Size Maxium Run 18 AWG 50 Feet 16 AWG 75 Feet 14 AWG 100/125 Feet 14 AWG 150/200 Feet
24 Volt Class 2 Minimum Wire Size
MODEL 208/230 VOLT 460 VOLT 575 VOLT 03 12 AWG 12 AWG 12 AWG 04 12 AWG 12 AWG 12 AWG 05 12 AWG 12 AWG 12 AWG 06 12 AWG 12 AWG 12 AWG 07 10 AWG 12 AWG 12 AWG 08 10 AWG 12 AWG 12 AWG
## : COMPRESSOR MINIMUM WIRE SIZE
ITEM FUNCTIONAL DESIGNATION
LINE NUMBER DESCRIPTION
101 SFR 148 Supply Fan Motor Relay 102 MSP-SF 38 Motor Starter Protecon-Supply Fan 103 SF-VFD 38 Supply Fan-Variable Frequency Drive 104 CC1 110 Compressor Contactor no. 1 105 CC1-A1, CC1-A2 # "CC1" Auxiliary Contact no. 1 and 2 107 MSP-CC1 1 Motor Starter Protecon-CC1 115 EFR 152 Exhaust Fan Relay 116 MSP-EF 46 Motor Starter Protecon-Exhaust Fan 118 EGB 4 Equipment Grounding Bar 119 F1, F2, F3 59, 60, 61 Fusing-See Fuse Table on this sheet 120 CB 71 Circuit Breaker-See Fuse Table on this sheet 122 MSP-OF1 22 Motor Starter Protecon-Outdoor Fan no. 1 126 OF1VFD 22, 25 Outdoor Fan Variable Frequency Drive no. 1 130 MRC1 202 Modulang Reheat Controller no. 1 131 PDB 1, 2, 3 Power Distribuon Block 132 PM 59, 71 Power/Phase Monitor 133 RHR 156 Reheat Relay 135 T1 62, 67 Control Transformer no. 1 136 T2 200 Control Transformer no. 2 137 TB1 Sheet 2-5 Terminal Board no. 1 138 TB2 71 Terminal Board no. 2 139 TB3 204, 216 Terminal Board no. 3 140 TB-A Sheet 5 Terminal Board no. -A 147 MSP-WM 54 Motor Starter Protecon-Wheel Motor 148 WMVFD 54 Wheel Motor Variable Frequency Drive 150 WM-CS 55, 329 Wheel Motor Current Sensor
LEGEND - ITEMS INSIDE CONTROL PANEL
# SEE LINE NUMBER TO THE RIGHT OF CONTACTOR COIL ON WIRING DIAGRAM.
ITEM FUNCTIONAL DESIGNATION
LINE NUMBER DESCRIPTION
101 BCTL 165 BCTL 102 BOS1 132 Bleed-O Solenoid no. 1 103 CCH1 4 Compressor Crankcase Heater No. 1 104 CM1 2 Compressor Motor No. 1 105 DPT260 340, 342 Dierenal Pressure Transmier 260 (SF and EF) 106 EFM1 47 Exhaust Fan Motor No. 1 107 FS 71 Fire Stat 108 HP1 110 High Pressure Switch No. 1 109 LP1 265 Low Pressure Switch No. 1 110 OFM1 29 Outdoor Fan Motor No. 1 111 SFM1 39 Supply Fan Motor No. 1 112 WM 55 EC Wheel Motor
LEGEND - ITEMS OUTSIDE CONTROL PANEL
# SEE LINE NUMBER TO THE RIGHT OF CONTACTOR COIL ON WIRING DIAGRAM.
FACTORY YLLAMRONGNIRIW OPEN CONTACTS
FIELD DESOLCYLLAMRONGNIRIW CONTACTS
EARTH ELBAIFITNEDIDNUORG TERMINAL
CHASSIS (PANEL) GROUND
COIL
SYMBOL LEGEND
NON-IDENTIFIABLE TERMINAL, OTHER WIRE JUNCTIONS, INCLUDING SCHEMATIC
43
Fig. 16 Installation Wiring Diagram (cont)
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520 WIRING DIAGRAM #0962I-5322 | 62XJ04PBJT-JFATACW | 208/230/460/575-3-60 | SHEET 8 OF 8 | 10/31/2017 DWN
LWF CHK
DS .
F6
F5 L2
L1
EGL (SEE FURNACE WIRING DIAGRAM)
G-14
GAS FURNACE LINE VOLTAGE TERMINALS
GAS FURNACE POWER SUPPLY FOR 230 VOLT UNITS
BK-14
BL-14
GAS FURNACE POWER SUPPLY FOR 208 VOLT UNITS (BUCKBOOST TRANSFORMER)
L2
L1
EGL (SEE FURNACE WIRING DIAGRAM)
H1 SPLICE SPLICE
G-14
GAS FURNACE LINE VOLTAGE TERMINALS
H2 H3 SPLICE
H4 X1 SPLICE
X2 X3 X4
BK-14
T4
F6
F5 BK-14
R-14
F6
F5 BK-14
BL-14
460V
230V
H1 H4
X1X4
T4
H2H3
X3X2 G-14
L2
L1
EGL (SEE FURNACE WIRING DIAGRAM)
G-14
F8
F7 R-14
Y-14R-14
GAS FURNACE POWER SUPPLY FOR 460 VOLT UNITS
500 VA
Y-14
Class CC, 600volts,
Time Delay
GAS FURNACE LINE VOLTAGE TERMINALS
PDB
BK-14
BL-14
2 amps fuse : 500VA 3 amps fuse : 750VA 2 amps fuse : 500VA
3 amps fuse : 750VA
Class CC, 600volts,
Time Delay
BK-14
BL-14
PDB
Y-14Class CC, 600volts,
Time Delay
4.5 amps fuse : 100VA 8 amps fuse : 250VA
Class CC, 600volts,
Time Delay
3 amps fuse : Single Gas Furnace 6 amps fuse : Dual Gas Furnace
BK-14
BL-14
PDB
RELAY COIL
NORMALLY OPEN CONTACTS
IDENTIFIABLE TERMINAL
NORMALLY CLOSED CONTACTS
HEATER-FACTORY WIRING
EARTH GROUND
CHASSIS (PANEL) GROUND
SYMBOL LEGEND
POWER SUPPLY TERMINAL CONNECTION
Isolaon Relays TERMINAL BOARD
FACTORY WIRING
TIMER RELAY- TR1-090LH15
RHLGP-A: AUTO RECYCLE HIGH LOW GAS PRESSURE SWITCH- OPTIONAL
Fenwall 35-61-xxxxx Ignion Control
When high and low gas pressure switch is furmished, remove this jumper.
Note:1
EGL
T1
240V 1
CLASS 2 50/60 HZ
230 VOLT, 1-PHASE, 60-HERTZ POWER SUPPLY L2
S1 SRTN F L L
240T6T07 Controller
WHT
BLK
BLKBLK
L1
N
L1 IND
IGNITION CONTROL
Modulang Furnace Control Panel
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
COM
T1 T2 T3
T5 T6
T4
T8 T9
T7
24V
HAPS EST
R1
E Valve
Maxitrol SC-40
J1 Open
T11 (+) T12 (-)
YEL
BLU
APS-2
AIR SWITCH-HIGH
3
(+)(-) (+)(-) 24V SIG
EXA Valve
T2T1 HR
NO C
NC C
High and Low Gas Pressure
Switches
NC
NO HIGH GAS
LOW GAS
Note:1
BLU
HI LIMIT
PUR
ROLL OUT SWITCH NO. 1
ROLL OUT SWITCH NO. 2
ORG ORG
PUR
APS-1
AIR SWITCH-LOW
ORG
ORG
Tstat24V
MV Alarm Gnd V2
Gnd Syst.
APS (PSW)
Sense
Spark
FLAME SENSOR
SPARK IGNITER 5
BLU
BLUBLU
BLU
Series 5 Ignion Control
KLBGRO (Com)
DRAFT INDUCER
BLUGRY LO
HI
4
YEL
YEL
BLU
GRY
YEL YEL
YEL
0-10VDC Analog Input (Polarity Sensive)
ON
1 2 3 4
WIRE TO EGB
4
W BK
24VAC Alarm Indicator
HR 13 14
ISOLATION RELAYS
367W1
C
W
BL
See units 24v terminal board
TB1
BCTL BL
0-10VDC INPUT
Gnd
UO-6
See ALC PAGE
44
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons)
1
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 1 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
EF-CS
SF-CS
PDB
PM
CS
CS
CS
CCH1
NOTE: SEE T3 ON SHEET #2 FOR WIRING
CONTINUATION
G-14
1.
EGB
L3
L2
L1
EGB
MSP-CC1
L3 T3
L2 T2
L1 T1
CM1 T3
T2
T1
R-14
BK-14
T1 50/60HZ
0V 20 8V
23 0V
46 0V
11 5V
24 V
0V
H4 H3 H2 H1
X3X2XFX1
MSP-SF1
L3 T3
L2 T2
L1 T1
MSP-EF1
L3 T3
L2 T2
L1 T1
EFM1 G-14
EF1VFD
UL1
VL2
WL3
UL1
VL2
WL3
CURRENT SENSOR
G-14
F3
F1
SF1VFD
G-14
G-14
3 (L1)
CHC-A1
CONNECT TO TERMINAL H1 FOR UNITS RATED 460V. CONNECT TO TERMINAL H2 FOR UNITS RATED 230V. CONNECT TO TERMINAL H3 FOR UNITS RATED 208V. SEE 575/600V TRANSFORMER FOR CORRECT WIRING CONNECTIONS ON UNITS RATED 575V.
CCH2 G-14
L3 T3
L2 T2
L1 T1
L3
L2
L1
T3
T2
T1
CM2 T3
T2
T1 R-14
BK-14
MSP-CC2 CC2
CC2-A1
OF1VFD
OFM1 G-14
MSP-OF1VFD
BL-12
BK-12
L3 T3
L2 T2
L1 T1
R-12
BL-12
BK-12
R-12
BL-14
BK-14
R-14
UL1
VL2
WL3
G-14
MSP-OF1
L3 T3
L2 T2
L1 T1
OFM2 G-14BL-14
BK-14
MSP-OF2
L3 T3
L2 T2
L1 T1
BL-14
BK-14
R-14
BL-14
BK-14
R-14
OF2VFD
OFM3 G-14
MSP-OF2VFD
BL-12
BK-12
L3 T3
L2 T2
L1 T1
R-12
BL-12
BK-12
R-12
BL-14
BK-14
R-14
UL1
VL2
WL3
G-14
MSP-OF3
L3 T3
L2 T2
L1 T1
OFM4 G-14BL-14
BK-14
R-14
MSP-OF4
L3 T3
L2 T2
L1 T1
BL-14
BK-14
R-14
BL-14
BK-14
R-14
SFM1
5 (L3) F2
4 (L2)
T3
Line Voltage96 VA
CLASS 2 50/60HZ
24V
F9
F10
G-14
R-14
White 0-10vdc
OUTDOOR FAN MOTOR VFD (OF1VFD)CONTROL TERMINAL STRIP
CR1
12 8Red +12-30VDC
OF1VFD
24V
2
1
DI2 3
DI1
AI1
0V 7
6
Black Common
R
Y
White 0-10vdc
OUTDOOR FAN MOTOR VFD (OF2VFD)CONTROL TERMINAL STRIP
CC2-A1
Red +12-30VDC
OF2VFD
24V
2
1
DI3 3
DI1
AI1
0V 7
6
Black Common
R
EATON SF1VFD
EATON EF1VFD
SF1VFD CONTROL
SF1R
9 5
24V
2
1 DI1
Y
Y
EF1VFD CONTROL
EF1R
9 5
24V
2
1 DI1
O
O
See ALC Page For 0-10vdc Wiring Connecon
See ALC Page For 0-10vdc Wiring Connecon
O
R-12 R-12 R-12
BL-12 BL-12 BL-12
BK-12 BK-12 BK-12
R-12 R-12 R-12
BL-12 BL-12 BL-12
BK-12 BK-12 BK-12
R-14 R-14
BL-14 BL-14
BK-14 BK-14
R-14
BL-14
BK-14
R-14 R-14
BL-14 BL-14
BK-14 BK-14
R-14
BL-14
BK-14
CM1VFD
UL1
VL2
WL3
G-14
45
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
66
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 2 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
TB1
HP2
HP1TB1
TB1 CC2
Enable Compressor #1
Enable Compressor #2
Y1
Y2 O
C
C
BL
BL A2A1
CONTINUED ON SHEET 3
1,2,3,4, 10Y
11,12,13, 14, 9
HP1 R R HPR1
1413 BL CY 351
HP2 R R HPR2
1413 BL CO 345
TB1 HP1
TB1 HP2
Y
O
T3
96 VA CLASS 2 50/60HZ
24VTB4
G-14
Line Voltage
TB4 K3 K4
NOTE: SEE T3 ON SHEET 1 FOR WIRING CONTINUATION
PM AUX
NO C R
PM
NOTE: SEE T1 ON SHEET 1 FOR WIRING CONTINUATION
T1 50/60HZ
0V 20 8V
23 0V
46 0V
11 5V
24 V
0V
H4 H3 H2 H1
X3X2XFX1 G-14
R-14
R-14R-14
BL-14 CB
TB2 TB2
PM
8 1
7
7 6 Remove jumper when eld installed safees are used
R-14 CBK BLJ2J1
Y
COPM #1 M1 M2
11 14 YY
O
COPM #2 M1 M2
11 14 OO
CR1 1413
CHC A2A1
EATON CM1VFD
CR1
9 5
24V
2
1 DI1
BR
BR
CM1VFD CONTROL See ALC Page 0-10VDC
RJ45
Remote Display CM1VFD
Mounted in Control Panel
46
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
131
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 3 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
TB1BOS1TB1
BLPR RADA
TB1
TB1
COPM #1
COPM #2
TB1
TB1
TB1
TB1
R
Enable Outdoor Air Damper Actuator OD PR BL
CONTINUED ON SHEET 2
BLEnable Heang HR 14
Heat Enable
WW1 BL
See separate Modulang Gas Furnace Drawing
EF1R
SF1R
BL
1413
Enable Supply Fan
Enable Hot Gas Reheat RH PR
BL
46
RHR 1413
134, 210
497
RHR BLBK
12 8
BL
24VAC T2T1
24VAC T2T1
R CBL
BL
R
R
1413
BK OADA-A (Fixed)
NO COM BK
BKR 24VAC
32
C
C
C
R C
BCTL
OADA BKR 24VAC
OADA
13
PKG
47
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
196
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 4 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
WIRE ALL SHIELD WIRES TO CLOSEST GND TERMINAL AT THE CONTROL PANEL4
RR
4
R
BK
0-10VDC Output
Gnd
UO-4
See ALC PAGE
RED GRYBLK PK
1 2 8 9
CAP PINK WIRE SEPARATELY
BKR GY PK
REHEAT VALVE
REHEAT CONTROL VALVE (MUELLER VALVE)
48
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
261
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 5 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
Not Include d ZS Room Sensor
O OnAuto
Universal Input Mode Select
Aux Power Out
Power
O On
Port 1
Rnet Gnd
RNET+
RNET-
+12V
UO-8
UO-7
UO-6
UO-5
Gnd 8 UO-4
+ 7
Gnd 6 UO-3
+ 5
Gnd 4 UO-2
+ 3
Gnd 2 UO-1
+ 1
Gnd 8
+ 7
Gnd 6
+ 5
Gnd 4
+ 3
Gnd 2
+ 1
UI-8
UI-7
UI-6
UI-5
8 Gnd UI-4
7 +
6 Gnd UI-3
5 +
4 Gnd UI-2
3 +
2 Gnd UI-1
1 +
UI-12
UI-11
UI-10
UI-9
Rnet Local Access
Gnd Rnet+ Rnet- +12V Sense
8 Gnd
7 +
6 Gnd
5 +
4 Gnd
3 +
2 Gnd
1 +
8 Gnd
7 +
6 Gnd
5 +
4 Gnd
3 +
2 Gnd
1 +
Gnd
24VAC
0 5
0 5
1 2
3 4
5 6
7 8
10's
1's Module Address
NET +
NET -
Shield
Port 1 BT48 5
Port 2a BT48 5
485 Port 1ARC- 156
2 Wire
EIA- 485
4 Wire
EIA- 232
Port 2a
XNET +
XNET -
Gnd
Port 2a
NET +
NET -
n/c
n/c
Signal Ground
Tx +
Tx -
Rx +
Rx -
Tx
Rx
DTR
DCD
2 wire 4 wire EIA-232
mA Thermistor/ Dry Contact/
RTD
Volts
O
2 1
Assi gned Defaul t
O n O
BAS Port
IP Addr
Enhanced Access Port 2a
BA Cn
et
BAS Port Sengs BAUD 4 5 Protocols 6 7 8 9600 O O MSTP (m) O O O 19.2K O On MSTP (s) On O O 38.4K On O PTP O On O 76.8K On On N2 On On O
Modbus O O On Lon SLTA On O On Lon Opon O On On
BA Cn
et
Fuse
24VDC
200mA maximum
100 LAN LINK
10/100 BaseT Ethernet Port E1
Xnet Expansion
See BAS Table Below
+ 3V
GndExternal Baery
Ext. Ba. Int. Ba.
0-10Vdc 0-20 mA Relay Pot
UO-1
UO-2
UO-3
UO-4
UO-5
UO-6
UO-7
UO-8
Set Pot Full CW
Port 2b
Format
I/O PRO 812u CONTROLLER
SEE TB4 ON UNIT WIRING DIAGRAM
R
TB4
BL
FACTORY WIRING FIELD WIRING TERMINAL BOARD
SYMBOL LEGEND
USE 18 AWG WIRE MINIMUM. TO MINIMIZE INTERFERENCE PROBLEMS: USE SHIELDED WIRE ON ALL ANALOG INPUTS
AND OUPUTS. DO NOT RUN 0-10 VOLT DC SIGNAL WIRING IN THE SAME CONDUIT AS LINE VOLTAGE WIRING OR WITH WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS SUCH AS CONTACTOR AND RELAY COILS. GROUND ONE END OF THE DRAIN (SHIELD) WIRE.
WHEN 0-10 VOLT DC SIGNAL WIRING MUST CROSS CLOSE TO CABLE OR NONMETALLIC CONDUIT CONTAINING LINE VOLTAGE WIRING OR WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS, IT MUST CROSS PERPENDICULAR (90 DEGREES) TO IT.
KEEP THE 0-10 VOLT DC SIGNAL WIRING AS SHORT AS POSSIBLE.
LON
1 2
Port 2bECHELO N
ECHELO N
LonWorks Card (oponal)
FOR FIELD : BAS OR EMS CONNECTION
ECHELO N
3V Lium Baery CR-123A
- +
Error Codes: Chase = OK 0 = Download Required 1 = Control Program Error 2 = RAM full 3 = Comm set-up error 4 = System error 8 = Formang Blinking Dot = Run
8 .
DO NOT APPLY 24V AC TO UNIVERSAL OUTPUTS External 24VDC relay coil only
24V AC R
TB-A
GND
GND
24VDC
USE SHIELDED WIRE FOR ALL ANOLOG INPUTS
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
24VDC
4
R
BKBK
R
SF1VFD
AI1
0V 7
6
Supply Fan VFD, 0-10vdc
EF1VFD
AI1
0V 7
6
4
Exhaust Fan VFD, 0-10vdc
BK
R R
BK
4
4
R
BKBK
R
R
BKBK
R
-
+
Heat Modulang See Elec. Heater or Gas Furnace for e xact wiring connecons
4
2tem p
sensor Vout
com V in pw
r
OA-T/RH
BK
Install OA-T/RH under the OA hood, sensing the ambient temp/humidity.
2
G
DxLAT2: INSTALL AFTER DX COIL #2 UPSTREAM OF REHEAT COIL
DxLAT1
R
BK
DxLAT1: INSTALL AFTER DX COIL #1 UPSTREAM OF REHEAT COIL
SA-T/RH Field install
and wire 1tem p
sensor Vout
com V in pw
r
4
Note: THE SUPPLY/DISCHARGE AIR TEMPERATURE/RELITIVE HUMIDITY (SA-T/RH) IS FACTORY SUPPLIED FOR FIELD INSTALLATION IN SUPPLY AIR DUCT. SENSOR MUST BE INSTALLED DOWNSTREAM OF HEATER WHERE IT CANNOT SEE ANY HEATING ELEMENTS AND WHERE SUFFICIENT MIXING OF DISCHARGE AIR OCCURS. USE 18 AWG SHIELDED WIRE. DO NOT RUN SENSOR WIRING IN THE SAME CONDUIT AS LINE VOLTAGE WIRING OR WITH WIRING THAT SWITCHES HIGHLY INDUCTIVE LOADS SUCH AS CONTACTOR AND RELAY COILS.
1
W
4
DxLAT2
R
BK
4
SENSORS DESCRIPTION CFI Clogged Filter Indicator
DPT-260 Dierenal Pressure Transmier SAT Supply Air Temperature Sensor
OA-T/RH Outdoor Air Temp/Relave Humidity Sensor SA-RH Supply Air Relave Humidity
ZS Zone Temperature Sensor - Standard CC1-CS, CC2-CS Compressor #1 & #2 Current Sensor
DxLAT Dx Leaving Air Temperature Sensor WM-CS Wheel Motor Current Sensor
SF-APS, EF-APS Supply Fan / Exhaust Fan Air Press. Switch WFR Water Flow Relay
LP1, LP2 Low Pressure Switch, Ckt. #1 & #2 SD Smoke Detector
K3
K4
WARNING!!! DO NOT leave dip
switch #1 ON. This wil l result in loss of
BACview and network communicaons.
MRC
+4-20
-4-20 Modulang Reheat, 0-10vdc
4
4BUILDING STATIC DPT-26O
Stac Pre ssure Sensor Field install and wire
SUPPLY FAN DPT-26O
Stac Pre ssure Sensor Field install and wire
0-10vdc out
COM EXC
0-10vdc out
COM EXC
Gn d
RN ET
+ RN
ET -
+1 2V
Gn d
Rn et
+ Rn
et -
+1 2V
Se ns
e
Gn d
RN ET
+ RN
ET -
+1 2V
Gn d
Rn et
+ Rn
et -
+1 2V
Se ns
e
Black Red
G
W
Green
EQUIPMENT TOUCH
Gnd
Rnet+ Rnet-
+24VAC
Red Black
White
FIELD INSTALL
4
K3
K4
-12V
Rnet +
Rnet -
+12V
TB4
TB5
To Wall Mount the Equipment Touch remove the factory installed cable
and wire +24VAC to TB4 K3 and wire Gnd to TB4 K4. If there is a ZS sensor installed wire Rnet+ and Rnet- to the ZS sensor Rnet+ and Rnet
terminals, otherwise wire to TB5 Rnet+ and Rnet-
BK
G
W
R
4
BK
R
Equipment Touch Connector
(Blue)
White Green
FOR FIELD : BACNET
CONNECTION
ALL FIELD INSTALLED SENSORS SHOULD BE WIRED TO THE CONTROLLER FOR FACTORY TESTING WITH TEMPORARY WIRING AND LEFT IN THE UNIT AFTER TEST. TEMPORARY
WIRING SHOULD BE REMOVED FOR PERMANENT INSTALLATION DURING UNIT INSTALLATION. LABEL
SENSORS PER THE WIRING DIAGRAM.
4
R
BKBK
R
CM1VFD
AI1
0V 7
6
Compressor VFD VFD, 0-10vdc
49
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
326
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 6 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
4
Xnet-
Gnd
Xnet+
Heang Enable
Y
R
O
W
PR
SEE UNIT 24V CONTROL TERMINAL BOARD
PK
OD
W1
RH
Y2
Y1
G
R
Hot Gas Re heat Enable
Compressor #2 Enable
Compressor #1 Enable
Supply Fan Enable
Outdoor AIr Damper Enable
HP1Y
HP2O
PR
OADA-A (Adj.)
NO COM
CC2-CS
CC1-CS
LP1
HPR1
9 5
LP2
HPR2
9 5
CFI
Install Condensate Overow Switch COS At Lowest
Point of Drain PanCOS PR
PR
PK
PK
W
W
BR
O
GY
BK
Y
Y
W
W
BK
GY
O
BR
BK
W
G
ALC EXPANDER BOARD CONNECTIONS
FACTORY WIRING FIELD WIRING TERMINAL BOARD
SYMBOL LEGEND
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
Power on
Xnet Baud
Gnd
24VAC
I/O FLEX EX8160 EXPANDER (0843P-0548)
R Gnd 16 UI-16
+ 15
16
Xnet Remote
Expansion
15
1
2
4
5
3
7
8
6
10
11
9
13
14
12
BO-8
Gnd
Xnet-
Xnet+
Gnd 14 UI-15
+ 13
Gnd 12 UI-14
+ 11
Gnd 10 UI-13
+ 9
Gnd 8 UI-12
+ 7
Gnd 6 UI-11
+ 5
Gnd 4 UI-10
+ 3
Gnd 2 UI-9
+ 1
Gnd 16 BI-8
+ 15
Gnd 14 BI-7
+ 13
Gnd 12 BI-6
+ 11
Gnd 10 BI-5
+ 9
Gnd 8 BI-4
+ 7
Gnd 6 BI-3
+ 5
Gnd 4 BI-2
+ 3
Gnd 2 BI-1
+ 1
Universal Inputs 9-16
0-5V Therm/
Dry
0-5V
Therm/Dry
Digital Inputs 1-8
BO-7
BO-6
BO-5
BO-4
BO-3
BO-2
BO-1
Xnet Remote
Expansion
ALC, IO PRO 812u
SEE SHEET 5
05
Expander Address
62.5k
500k
Error
Run
BO-1 LED
BO-2 LED
BO-3 LED
BO-4 LED
BO-5 LED
BO-6 LED
BO-7 LED
BO-8 LED
BL
SEE TB4 ON UNIT WIRING DIAGRAM TB4
K3
K4
PK
PK
PR
PR
SF-CS
EF-CS
BK
W
GBK
G
50
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
391
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 7 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
FIELD POWER SUPPLY 208/230/460/575-3-60. MINIMUM CIRCUIT AMPACITY AND MAXIMUM SIZE AND TYPE OF BRANCH-CIRCUIT SHORT-CIRCUIT AND GROUND-FAULT PROTECTION PER UNIT RATING PLATE. PROVIDE DISCONNECTING MEANS AS REQUIRED.
TYPICAL MOTORS AND COMPRESSORS SHOWN. SEE CONNECTION DIAGRAM ON MOTOR OR COMPRESSOR FOR ACTUAL WIRING DETAIL.
FUSE NO. CLASS VAC AMPS-208/230V AMPS-460V XFMR TIME DELAY CC 600 3 2 350VA YES CC 600 2 1.5 250VA YES CC 600 2 1.5 200VA YES CC 600 1.5 3/4 150VA YES
F2, F9, F10 CC 600 1 1 N/A YES CC 600 16 16 350VA YES CC 600 10 10 250VA YES CC 600 10 10 200VA YES CC 600 6 6 150VA YES
CB
FUSE TABLE
F1, F3
2
1
ABBREVIATION COLOR BK BLACK BL BLUE BR BROWN G GREEN O ORANGE PK PINK PR PURPLE R RED W WHITE Y YELLOW
WIRE COLOR LEGEND
NOTE: NUMBER PLACED AFTER DASH FOLLOWING COLOR CODE INDICATES WIRE GAGE. EX. - BK-12 IS A BLACK, 12 AWG WIRE. NO NUMBER AFTER COLOR CODE INDICATES 18 AWG WIRE. EX. - BK IS A BLACK 18 AWG WIRE.
Wire Size Maxium Run 18 AWG 50 Feet 16 AWG 75 Feet 14 AWG 100/125 Feet 14 AWG 150/200 Feet
24 Volt Class 2 Minimum Wire Size
ITEM FUNCTIONAL DESIGNATION
LINE NUMBER DESCRIPTION
101 SFC 148 Supply Fan Motor Contactor 101 SFR 148 Supply Fan Motor Relay 102 MSP-SF 38 Motor Starter Protecon-Supply Fan 103 SF-VFD 38 Supply Fan-Variable Frequency Drive 104 CC1 110 Compressor Contactor no. 1 104 CC1A, CC1B 110, 113 Compressor Contactor no. 1A and 1B 105 CC1-A1, CC1-A2 # "CC1" Auxiliary Contact no. 1 and 2 105 CC1A-A1, CC1A-A2 # "CC1A" Auxiliary Contact no. 1 and 2 106 CC1B-A1 # "CC1B" Auxiliary Contact no. 1 107 MSP-CC1 1 Motor Starter Protecon-CC1 107 MSP-CC1A, MSP-CC1B 1, 6 Motor Starter Protecon-CC1A, CC1B 108 CC2 123 Compressor Contactor no. 2 108 CC2A, CC2B 123, 126 Compressor Contactor no. 2A and 2B 109 CC2-A1, CC2-A2 # "CC2" Auxiliary Contact no. 1 and 2 109 CC2A-A1, CC2A-A2 # "CC2A" Auxiliary Contact no. 1 and 2 110 CC2B-A1 # "CC2B" Auxiliary Contact no. 1 111 MSP-CC2 11 Motor Starter Protecon-CC2 111 MSP-CC2A, MSP-CC2B 11, 16 Motor Starter Protecon-CC2A, CC2B 112 DIG1 108 Digital Compressor no. 1 Unloader Solenoid 112 DIG1, DIG2 108, 121 Digital Compressor no. 1 and 2 Unloader Solenoid 113 DR1 91 Defrost Relay no. 1 113 DR1, DR2 91, 99 Defrost Relay no. 1 and 2 114 DTM1 88 Defrost Timer no. 1 114 DTM1, DTM2 88, 96 Defrost Timer no. 1 and 2 115 EFC 152 Exhaust Fan Contactor 115 EFR 152 Exhaust Fan Relay 116 MSP-EF 46 Motor Starter Protecon-Exhaust Fan 117 EFVFD 46 Exhaust Fan-Variable Frequency Drive 118 EGB 4 Equipment Grounding Bar 119 F1, F2, F3 59, 60, 61 Fusing-See Fuse Table on this sheet 120 CB 71 Circuit Breaker-See Fuse Table on this sheet 121 OFC1 79 Outdoor Fan Contactor no. 1 121 OFC1, OFC2 79, 83 Outdoor Fan Contactor no. 1 and 2 121 MSP-OFVFD1 & 2 17, 29 MSP. Outdoor Fan VFD no. 1 and 2 122 MSP-OF1 22 Motor Starter Protecon-Outdoor Fan no. 1 123 MSP-OF2 30 Motor Starter Protecon-Outdoor Fan no. 2 123 MSP-OF2 26 Motor Starter Protecon-Outdoor Fan no. 2 124 MSP-OF3 30 Motor Starter Protecon-Outdoor Fan no. 3 125 MSP-OF4 34 Motor Starter Protecon-Outdoor Fan no. 4 126 OF1VFD 22, 25 Outdoor Fan Variable Frequency Drive no. 1 126 OF1VFD, OF2VFD 22, 25, 30 Outdoor Fan Variable Frequency Drive no. 1 and 2 128 HARM Sheet 4 Heang Analog Relay Module 129 MDC1 214 Modulang Discharge-Line Controller no. 1 129 MDC1, MDC2 214 Modulang Discharge-Line Controller no. 1 and 2 130 MRC1 202 Modulang Reheat Controller no. 1 130 MRC1, MRC2 202 Modulang Reheat Controller no. 1 and 2 131 PDB 1, 2, 3 Power Distribuon Block 132 PM 59, 71 Power/Phase Monitor 133 RHR 156 Reheat Relay 134 RVR 158 Reversing Valve Relay 135 T1 62, 67 Control Transformer no. 1 136 T2 200 Control Transformer no. 2 137 TB1 Sheet 2-5 Terminal Board no. 1 138 TB2 71 Terminal Board no. 2 139 TB3 204, 216 Terminal Board no. 3 140 TB-A Sheet 5 Terminal Board no. -A 144 TD1 113 Time Delay no. 1 144 TD1, TD2 113, 126 Time Delay no. 1 and 2 145 BY-PASS TIMER 1 115 By-pass Time Delay no. 1 145 BY-PASS TIMER 1 & 2 115, 128 By-pass Time Delay no. 1 and 2 146 WMC 463 Wheel Motor Contactor 146 WMR ??? Wheel Motor Relay 147 MSP-WM 54 Motor Starter Protecon-Wheel Motor 148 WMVFD 54 Wheel Motor Variable Frequency Drive 149 C450 460 Johnson Control C450 (0-10VDC) 150 WM-CS 55, 329 Wheel Motor Current Sensor 151 1K Ohm 212, 213 Resistor, 1K Ohms for MDC 152 CR1 112 Compressor Relay no. 1 152 CR1 and CR2 112, 125 Compressor Relay no. 1 and 2
LEGEND - ITEMS INSIDE CONTROL PANEL
# SEE LINE NUMBER TO THE RIGHT OF CONTACTOR COIL ON WIRING DIAGRAM.
ITEM FUNCTIONAL DESIGNATION
LINE NUMBER DESCRIPTION
101 APS 265 Air Pressure Switch (Supply Fan) 102 APS 265, 266 Air Pressure Switch (Supply Fan and Exhaust Fan) 103 BCTL 165 BCTL 104 BOS1 132 Bleed-O Solenoid no. 1 105 BOS1, BOS2 132, 134 Bleed-O Solenoid no. 1 and 2 106 CCH1 4 Compressor Crankcase Heater No. 1 107 CCH1A, CCH1B 4, 9 Compressor Crankcase Heater No. 1A and 1B 108 CCH2 14 Compressor Crankcase Heater No. 2 109 CCH2A, CCH2B 14, 19 Compressor Crankcase Heater No. 2A and 2B 110 CM1 2 Compressor Motor No. 1 111 CM1A, CM1B 2, 7 Compressor Motor No. 1A and 1B 112 CM2 12 Compressor Motor No. 2 113 CM2A, CM2B 12, 17 Compressor Motor No. 2A and 2B 114 COPM1 110, 181 Compressor Overcurrent Protecon Module no. 1 115 COPM2 123, 183 Compressor Overcurrent Protecon Module no. 2 116 DPT260 340 Dierenal Pressure Transmier 260 (SF) 117 DPT260 340, 342 Dierenal Pressure Transmier 260 (SF and EF) 118 DTT1 93 Defrost Tstat No. 1 119 DTT1, DTT2 93, 101 Defrost Tstat No. 1 and 2 120 ECDA 179 Economizer Damper Actuator 121 ECDA 178, 179 Economizer Damper Actuator 122 EFM1 47 Exhaust Fan Motor No. 1 123 FS 71 Fire Stat 124 FZT 266 Freeze Stat 125 HP1 110 High Pressure Switch No. 1 126 HP2 123 High Pressure Switch No. 2 127 LP1 265 Low Pressure Switch No. 1 128 LP2 266 Low Pressure Switch No. 2 129 LSS1A, LSS1B 136, 138 Liquid Sub-Cooling Solenoid no. 1A and 1 B 130 LSS2A, LSS2B 140, 142 Liquid Sub-Cooling Solenoid no. 2A and 2B 131 LLS1 144 Liquid Line Solenoid no. 1 132 LLS1, LLS2 144, 146 Liquid Line Solenoid no. 1 and 2 133 OFM1 23 Outdoor Fan Motor No. 1 134 OFM2 31 Outdoor Fan Motor No. 2 135 OFM2 27 Outdoor Fan Motor No. 2 136 OFM3 31 Outdoor Fan Motor No. 3 137 OFM4 35 Outdoor Fan Motor No. 4 138 OFM5 39 Outdoor Fan Motor No. 5 139 OFM6 43 Outdoor Fan Motor No. 6 140 RVS1 73 Reversing Valve No. 1 141 RVS1, RVS2 73, 76 Reversing Valve No. 1 and 2 142 SFM1 39 Supply Fan Motor No. 1 143 WFS 268 Water Flow Switch 144 WM 55 EC Wheel Motor
LEGEND - ITEMS OUTSIDE CONTROL PANEL
# SEE LINE NUMBER TO THE RIGHT OF CONTACTOR COIL ON WIRING DIAGRAM.
FACTORY WIRING NORMALLY OPEN CONTACTS
FIELD WIRING NORMALLYCLOSED CONTACTS
EARTH GROUND IDENTIFIABLE TERMINAL
CHASSIS (PANEL) GROUND
COIL
SYMBOL LEGEND
NON-IDENTIFIABLE TERMINAL, OTHER WIRE JUNCTIONS, INCLUDING SCHEMATIC
51
Fig. 17 Wiring Diagram for Units with Inverter Driven Compressor (20+ tons) (cont)
456
WIRING DIAGRAM #CARRIER BITZER COMPWD | 62X360 | Dedicated Outside Air System | Air Source Cooling | 460-3-60 | SHEET 8 OF 8 | 10/29/19 DWN SRF
CHK LWF
.
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
BK-14
BL-14
BK-14
BL-14
4 Amp Fuses, Class CC, 600 volts,
Time Delay
PDB
F6
F5
Example Drawing Only See electrical drawing supplied by
furnace manufacturer for actual wiring connecon.
RELAY COIL
NORMALLY OPEN CONTACTS
IDENTIFIABLE TERMINAL
NORMALLY CLOSED CONTACTS
HEATER-FACTORY WIRING
EARTH GROUND
CHASSIS (PANEL) GROUND
SYMBOL LEGEND
POWER SUPPLY TERMINAL CONNECTION
Isolaon Relays TERMINAL BOARD
FACTORY WIRING TIMER RELAY- TR1-090LH15
EGL
T1
240V 1
CLASS 2 50/60 HZ
230 VOLT, 1-PHASE, 60-HERTZ POWER SUPPLY L2
S1 SRTN F L L
240T6T07 Controller
WHT
BLK
BLKBLK
L1
N
L1 IND
IGNITION CONTROL
Modulang Furnace Control Panel
WIRE ALL SHIELD WIRES TO CLOSEST TB-A or TB-D GND TERMINAL AT THE CONTROL PANEL4
COM
T1 T2 T3
T5 T6
T4
T8 T9
T7
24V
HAPS EST
R1
E Valve
Maxitrol SC-40
J1 Open
T11 (+) T10 (-)
YEL
BLU
APS-2
AIR SWITCH-HIGH
3
(+)(-) (+)(-) 24V SIG
EXA Valve
T2T1 HR
9 5 BLU
HI LIMIT
PUR
ROLL OUT SWITCH NO. 1
ROLL OUT SWITCH NO. 2
ORG ORG
PUR
APS-1
AIR SWITCH-LOW
ORG
ORG
Tstat24V
MV Alarm Gnd V2
Gnd Syst.
APS (PSW)
Sense
Spark
FLAME SENSOR
SPARK IGNITER 5
BLU
BLUBLU
BLU
Series 5 Ignion Control
ORG BLK (Com)
DRAFT INDUCER
BLUGRY LO
HI
4
YEL
YEL
BLU
GRY
YEL YEL
YEL
0-10VDC Analog Input (Polarity Sensive)
ON
1 2 3 4
WIRE TO EGB
4
BK R
24VAC Alarm Indicator
HR 13 14
ISOLATION RELAYS
497W
BL
See units 24v terminal board
TB1
W1
C
+A6
-A6 TB1
BCTL BL
See ALC Page
4 Gnd
3 +
GY W
UO-6
460V
230V
H1 H4
X1X4
T4
H2H3
X3X2 G-14
L2
L1
EGLG-14
R-14
Y-14R-14
GAS FURNACE POWER SUPPLY FOR 460 VOLT UNITS
1000 VA
2 Amp Fuses, Class CC, 600volts,
Time Delay
F7
F8
Y-14
(SEE FURNACE WIRING DIAGRAM)
GAS FURNACE #1 LINE VOLTAGE TERMINALS
52
MAINTENANCE Prior to any maintenance or service to the unit, shut off, lockout, and tagout the electrical disconnect and fuel valve (if applicable) that supplies the unit in accordance with OSHA regulations and, if the unit includes electric or gas heat, allow ample time for the unit to cool. After maintenance is performed or the unit is serviced, the unit shall be re-commissioned per the start-up procedure.
Installation Code and Quarterly Inspections All installation and service of Carriers 62X equipment must be performed by a contractor qualified in the installation and service of equipment sold and supplied by Carrier, as well as conform to all requirements set forth in the manuals and all applicable govern- mental authorities pertaining to the installation, service, operation, and labeling of the equipment. To help facilitate optimum performance and safety, Carrier recom- mends that a qualified contractor conducts, at a minimum, quarter- ly inspections of your 62X Series equipment and perform service where necessary, using only replacements parts sold and supplied by Carrier.
General QUARTERLY Follow the entire start-up procedure at this time and check settings (controls, operating temperatures, operating pressures, power, and control voltages) and operation.
Unit Exterior CABINET EXTERIOR After installation, fix scratches. Periodic painting should be done thereafter, as required. The caulk should be inspected annually. Re-apply caulk as needed to maintain integrity. For units with harsh coating protection, contact your Carrier sales office to pur- chase a touch up coating kit. UNIT LOCATION Verify that no flammable objects, liquids, or vapors are present near the unit. If unit includes gas heat, clearances to combustibles around the vent must be adhered to (see Clearances, page 5). Do not hang anything from or place anything on the unit. Keep the area around the unit free of all objects.
Direct Drive Supply and Exhaust Fans BLOWER WHEEL Inspect blower wheel and clean as necessary. A small build-up of dust can cause a significant decrease in blower performance. Check for excessive vibration. Clean and repair as required. MOTORS Inspection Inspect motor every 3 months. Keep the motor clean and vent openings clear. Lubrication 1. Motors with grease fittings must be lubricated as indicated in
Table 12. Table 12 Motor Lubrication Intervals
NOTE: These intervals are based on severe duty. Over lubricating bear- ings could result in reduced motor life.
2. A high grade ball or roller bearing grease must be used. Rec- ommended grease for standard service is Mobil Polyrex1 EM. Other compatible greases include ChevronTexaco Polystar2, ChevronTexaco Rykon2 Premium 2, Pennzoil3 Pen 2 Lube, and ChevronTexaco SRI.
3. Motors without grease fittings are sealed for life and do not require re-lubrication.
Lubricating Instructions Before greasing, be sure fittings are clean and free from dirt. Remove grease relief plug or plate and, using a low-pressure grease gun, pump in the required grease. Do not over-grease. Re-lubrication intervals are specified in Table 12. After re-lubri- cating, allow motor to run for 10 minutes before replacing relief hardware.
Condensing Fans Manually rotate to ensure free movement. Check that all fan mounting hardware is tight. Check motor bearings for wear.
Refrigeration Circuit Components EVAPORATOR COIL Check for dirt and bent fins. Clean with water from blower side towards filter side. CONDENSER COIL Check for dirt and bent fins. Clean by brushing off with broom. COMPRESSORS Compressors are factory-supplied with a charge of oil and should not require additional maintenance.
Condensate Drain Pan and Drain Check for blockages. Clean as necessary with a mixture of 1/2 cup (0.1 L) bleach and 1 gallon (1.9 L) of warm water, if signs of mold or algae are present.
Dampers DAMPERS Check and clean blades. DAMPER MOTOR/LINKAGES Verify that all damper linkages move freely. Lubricate if necessary.
Energy Conservation Wheel BEARINGS Small ECWs (smaller than ECW666) are provided with no main- tenance inboard bearings. These bearings should require no main- tenance during the life of the unit. Larger ECWs come equipped with an external flanged bearing that should be greased annually. Use a petroleum based lubricant.
NEMA FRAME SIZE (MOTOR HP)
RATED AT 1800 RPM (HRS)
UP TO 210 (3-5) 6,000 210-280 (7.5-20) 4,750 280-360 (25-30) 3,700
1. Polyrex EM is a trademark of Exxon Mobil corporation. 2. Polystar and Rykon are registered trademarks of Chevron. 3. Penzoil is a registered trademark of Pennzoil Quaker State
Company.
IMPORTANT: In general, it is not recommended to mix greases of different brands. The mixing of different types of thickeners may destroy the composition and physical properties of the grease. In the event that a different grease is required by the end user, the following steps can be taken. Using the Lubricating Instructions, open grease outlet and purge the system as much as possible of the old or unwanted grease. Repeat this same operation after one week of service.
53
DRIVE MOTOR The drive motors should not require maintenance. Replace as necessary. DRIVE BELTS Belts are multi-link belts with individual links constructed of a high performance polyurethane elastomer reinforced with multi- ple plies of polyester fabric. This belt provides a strong, yet flexi- ble belting. The multi-link feature provides quick, easy servicing or replacement. Adjust and/or replace as necessary. SEALS Adjust and/or replace as necessary. The seals are made to clip on the cassette or post metal easily. WHEEL The wheel is somewhat self-cleaning through its normal action of rotating in and out of counter current airflow streams. In the event that routine quarterly inspection indicates that there is dirt or dust buildup within the wheel causing an excessive pressure drop, then wheel cleaning should be performed as follows: 1. Using a standard shop vacuum, vacuum any debris from both
faces of the wheel. Slowly work around the entire face of the wheel to complete the procedure. Do not damage wheel face by excessive pressure of the vacuum nozzle on the wheel face.
2. Using 20 psi clean, dry air and a small air nozzle, blow air through one face of the wheel. At a similar location on the opposite side of the wheel, gently apply a shop vacuum to receive any remaining debris exiting the wheel. In the event that this method does not remove visual buildup or return pressure drop to within normal parameters, a wheel washing procedure is recommended. The energy conservation wheels can be washed thoroughly with water without affecting the performance of the wheel. The wheel will simply dry out fol- lowing a washing procedure and resume normal energy trans- fer without any deviation in performance. If the energy conservation wheel can be easily removed from the cassette or unit, it is recommended to do so to facilitate the washing process. However, in most cases, it is impractical to remove larger wheels. Therefore, the washing procedure must take place within the air handling unit, and provisions need to be made to collect the runoff water from the bottom of the unit or collect the water by using a wet vac on the opposite side of the wheel during the procedure.
3. Shield all electrical components and bearings with plastic sheeting. Ensure that an adequate drainage system exists to collect runoff water from the bottom of the unit. Alternatively, use a wet vac with a wide nozzle on the oppo- site face of the wheel to collect the water during the washing procedure.
4. Disable the drive motor. 5. Using standard pressure water (do not use a high pressure
washer) and working from the one side of the wheel, wash the wheel with a standard garden nozzle to flush any debris trapped within the flutes of the wheel. If desired, a mild deter- gent can also be used to enhance cleaning without affecting the performance of the wheel.
Gas Heater GAS LINE Check for gas leaks. MANUAL SAFETY SHUT OFF VALVE Check for gas leaks. DIRECT SPARK IGNITER Check for cracked ceramics, excessive carbon residue, or erosion of the electrode. Replace as required. GAS VALVE Check that gas valve seat is not leaking. BURNERS Soft brush or vacuum inside burner, at burner ports, and at air inlet between burner and manifold pipe to eliminate accumulation of lint and/or dirt. HEAT EXCHANGER Inspect for cracks, sagging, bending, or distortion. Clean with vac- uum and/or stiff brush. DRAFT INDUCER Clean with compressed air or vacuum. VENT PIPE/TERMINAL Venting must be intact. Using a flashlight, look for obstructions, cracks on the pipe, gaps in the sealed areas, or corrosion. Clean vent terminal. CONDENSATION DRAIN Check for blockages.
Electric Heater Wiring and Wiring Connections Check all wiring connections. Tighten as necessary. Check inter- nal wiring. Replace as necessary with type THHN 221F (105C), 600V, 16-gauge wire or equivalent. CONTROL PANEL Check heater control panel for dust/dirt and moisture. Clean as necessary. HEATING ELEMENTS Check heating elements for dust/dirt buildup and/or broken ele- ments. Replace elements and/or clean elements with low pressure air as necessary. Check element male/female chassis insulators for breaks and/or cracks. Replace as necessary. Check element support frame insulators. Replace missing or broken insulators as necessary.
Filters Filters should be checked for dirt restriction on a monthly basis (or as required). Replace filters with filters of equal specification when they appear dirty.
54
TROUBLESHOOTING See Tables 13-19 for possible causes and solutions to problems that may arise.
Table 13 Supply Fan
PROBLEM POSSIBLE CAUSE SOLUTION
Blower motor does not run
Damper limit switch no closed or inoperative Repair or replace switch. Motor thermal overloads tripped For tripped condition - reset. Fuses blown or missing Replace fuses. External power source lacking Have incoming power lines checked. Motor inoperative Repair or replace.
Blower motor runs, but fans do not supply enough make-up air
Intake filters dirty Replace or clean.
Obstruction in the intake Check dampers for proper operation. Clear all intake passages of obstructions.
Fan wheel loose on shaft Reposition and tighten. Access doors and panels not closed Close.
Excessive discharge resistance from: Dirty filters in discharge External dampers.
Clean filters and/or re-adjust dampers.
Excessive fan noise
Fan motor bearing Replace. Fan wheel loose on shaft Reposition and re-tighten.
Fan wheel rubbing Loosen setscrews. Reposition cone and tighten.
Fan wheel dirty Clean. Loose duct Tighten or reinforce. Foreign article in fan or duct Remove.
55
Table 14 Compressor
LEGEND
PROBLEM POSSIBLE CAUSE SOLUTION
Compressor will not start
Power off, loose electrical connections or fuse open Check disconnect switch, fuses and wiring.
Compressor contactor not closing Check voltage to contactor coil, transformer slave relay, thermostat.
Internal compressor thermal overload open If compressor is hot, allow 2 hours to cool see below.
Compressor defective Check compressor for electrical failure. Compressor may be seized; check for lock rotor amps.
High or low pressure switch open or defective Check calibration of high or low pressure switch. Oil pressure control open or defective Check oil failure control see below.
Compressor starts but cuts out on
low pressure switch
Low on refrigerant Check sight glass and check pressures.
Airflow restricted Check for dirty evaporator coil, dirty filters, dampers closed, iced evaporator, VFD settings, check motor amps, duct design.
Restriction in liquid line Check head pressure. Check and adjust TXV, if not functioning properly. Check pressure drop across filter drier.
Defective low pressure switch Check calibration of switch.
Compressor starts but cuts out on
high pressure switch
Refrigerant overcharged Check pressures and charge by subcooling. Condenser fan control has incorrect setting Check calibration of the low ambient control. Fan motor defective Check fan motor.
Condenser coil inlet obstructed or dirty Check coil and inlet clearances and for possible air recirculation.
Air or non-condensables in system
Compare liquid refrigerant pressure with the saturated pressure. If the presence of air or non-condensables is suspected, the refrigerant must be reclaimed through a service port. The system must then be re-evacuated to 250-500 microns and recharged. The filter-drier should also be replaced before charging.
Defective high pressure switch Replace switch. Restriction in discharge or liquid line. Check discharge and liquid line pressures. Check TXV.
Compressor cuts out on thermal overload
Low voltage
Check incoming voltage leg-to-leg. All three legs must be within 10% of the required voltage and the leg-to- three-leg average voltage variation must be less than 2% on each leg.
Sustained high discharge pressure Check running amperage and conditions described under high discharge pressure.
High suction and discharge pressures Check TXV setting. Check for air in system.
Defective compressor overload Allow compressor to cool for two hours if compressor is hot. Recheck for open circuit.
Defective run capacitor Check run capacitor for compressor and fan motor. Improper refrigerant charge Check subcooling. Bearings or pistons too tight Check for low oil level. Allow time for compressor to cool Check dome temperature of compressor.
Noisy compressor
Scroll compressors are rotation sensitive Reverse wiring at disconnect switch may require blower to be rechecked for rotation.
Refrigerant overcharged Check pressures and subcooling.
Excess or insufficient oil in compressor crankcase Check oil level on hermetic compressors. Check total equivalent feet of piping. Add oil, as recommended.
Liquid floodback Check TXV setting. Refrigerant overcharge refrigerant circuit problem.
Cyclical noise pattern Digital compressors have a significant shift in gener- ated noise when running uploaded.
Compressor defective Replace compressor.
TXV Thermal Expansion Valve VFD Variable Frequency Drive
56
Table 15 Refrigeration Circuit
PROBLEM POSSIBLE CAUSE SOLUTION
Noisy operation
Air noise Check ductwork. Air velocity too high.
Chattering contactor Check for adequate control voltage. Check for shorts or breaks. Check thermostat. Check contactor points.
Tubing rattle Dampen by taping or clamping. Bend tubing away from contact, where possible.
High suction pressure
Excessive load on evaporator coil Check for high entering wet bulb temperature. Check for excessive airflow.
Broken compressor valves. Scroll compressors do not have valves
Scroll compressors should not be pumped down below 5 PSI.
Compressor is unloaded Recalibrate unloader pressure switch. Leaking check valve Check temperature across check valve. Expansion valve not secured to suction line or TXV defective
Check the TXV, ensure bulb is insulated.
High discharge pressure
TXV setting Check TXV setting and calibrate superheat.
Air inlet to condenser dirty or obstructed Check for proper clearances and possible air recircu- lation.
Condenser fan, motor defective Check condenser fan motor and run capacitor.
Condenser fan control has incorrect setting Check calibration of low ambient head pressure con- trol.
Suction pressure too low
Refrigerant undercharge Check pressures and subcooling. Blower running backwards Interchange any two wires connected to motor. Defective or improperly adjusted expansion valve Check superheat and adjust TXV. Dirty filter Check filter and evaporator coil. Too little airflow or low entering air temperature Check airflow and entering air wet bulb conditions. Restriction in suction or liquid line Check refrigerant circuit for restriction.
Head pressure too low
Insufficient refrigerant charge Check subcooling. Check for leak. Defective or improperly adjusted expansion valve Check superheat and adjust TXV. Low suction pressure See above suction pressure too low. Condenser fan control setting Check calibration of low ambient control. Defective compressor See above high suction pressure.
Compressor short cycles
Thermostat location or malfunction Check thermostat. Check heat anticipator setting. Improper refrigerant charge Check subcooling. Verify superheat. Defective high or low pressure control Check high or low pressure switch. Cycling on internal overload Possible tight bearings see above. Defective expansion valve Check TXV and superheat. Poor air distribution Check ductwork for recirculation. High discharge pressure See above high discharge pressure. Leaking discharge valves in compressor See above high suction pressure.
Running cycle too long or unit operates continuously
Refrigerant undercharged Check subcooling. Dirty filter or evaporator coil Check filter, coil and airflow. Dirty or clogged condenser coil Check coil and airflow.
Air or other non-condensables in system Check equalized high side pressure with equivalent outdoor temperature.
Defective compressor See above high suction pressure. Restriction in suction and liquid line Check for restrictions in refrigerant circuit.
Control contacts stuck Check thermostat, shorts in wiring, slave relay com- pressor contactor.
Supply air temperature too high
Refrigerant undercharge or leak in system Check subcooling and check for leaks. Evaporator plugged with dirt or ice Check evaporator, airflow, and filter. Improperly adjusted or defective expansion valve Check superheat and adjust TXV. Check bulb. Defective compressor Check compressor for proper operation. High discharge pressure See above- high discharge pressure. Airflow is too high Check external static pressure.
Supply air temperature too low Airflow is too low
Check evaporator coil, filter. Check for closed damp- ers, grills, drive for loose parts, belts, misalignment. Check external static pressure.
Return air temperature too low Check entering air wet bulb conditions.
Liquid line too hot Refrigerant undercharged See above - high discharge pressure. High discharge pressure Restriction upstream at point of frosting.
Suction line frosting Insufficient evaporator airflow Check airflow. Check fan VFD, closed dampers. Restriction in suction or liquid line Restriction upstream at point of frosting. Malfunctioning or defective expansion valve Check bulb of TXV.
Blower motor not running
Improper wiring Check wiring diagram. Defective motor Check motor controller. Defective thermostat or control circuit Check R and G circuit. Motor off on overload protector Allow motor to cool. Check amperage.
57
Table 16 Variable Speed Head Pressure Control
LEGEND * Venturi-Flow is a trademark of Control Devices, LLC
PROBLEM POSSIBLE CAUSE SOLUTION
No fan operation
No 24V control voltage Check for 24 VAC at control.
No input pressure to control Check alignment of capillary fitting. Schrader valve depressor must depress Schrader valve enough to allow pressure into capillary.
Bad fan motor Disconnect power. When P266 is used, place a jumper from L1 to M1 and connect power. If fan does not start, motor is bad and should be replaced.
Pressure transducer problem
Disconnect 6 pin connector from right side of control. Place a jumper wire between third pin from the top and bottom pin on the control (not the cable). If fan goes to full speed, check for input pressure. If it has been determined there is adequate pressure, the transducer is bad and the control must be replaced.
Fan stops when pressure reached high end of operating range. Control is not wired correctly See wiring diagrams.
No fan modulation (on-off operation) Control is not wired correctly See wiring diagrams.
Fan starts at full speed Control is not wired correctly See wiring diagrams.
Erratic fan operation Control is not wired correctly See wiring diagrams. Dirty or blocked condenser coil Clean condenser coil.
Fan motor is cycling on thermal overload
Dirty or blocked condenser coil Clean condenser coil.
Wrong motor for fan speed control application Replace with motor approved for fan speed control application.
Erratic pressure control
Defective regulator Replace defective part.
Dirt causing regulator to bind Disassemble regulator and clean internal parts. Install strainer.
Power source to hot gas solenoid or operation of the solenoid is intermittent
Determine if problem is caused by supply voltage, solenoid, or excessive MOPD. Make changes neces- sary to correct problem.
Regulator leakage Dirt in regulator causing seat to remain open Clean regulator. Install strainer. Worn or eroded seating surface on regulator Replace defective part.
Regulator hunting (chattering) with large fluctuations in controlled
pressures
Regulator is oversized Contact a certified technician for correctly sized regu- lator.
Regulator and liquid injection thermovalve have control interaction
Increase superheat setting. Dampen bulb response by repositioning.
Regulator and cylinder unloaders have control inter- action
Increase differential between the controls by lowering the regulators setpoint.
Regulator will provide pressure control
Regulator seat is restricted Locate and remove stoppage. Install strainer. Pressure adjusting stem is set at a point so high that suction pressure never reaches the setpoint Re-adjust the regulator.
Strainer clogged at the regulator inlet Locate and remove stoppage. MOPD exceeded across the solenoid or loss of source voltage
Replace solenoid or troubleshoot the electrical prob- lem.
Solenoid coil burned out Replace coil. Wrong type of distributor for hot gas bypass to the evaporator
Install proper Venturi-Flo* type distributor for low pressure drop.
Regulator fails to close
Dirt under seat of regulator Locate and remove stoppage. Install strainer or filter drier.
Diaphragm failure (leakage around the adjusting stem) Replace defective parts.
Pressure adjusting stem is set at a point so high that suction never reaches the setpoint Re-adjust the regulator.
Blocked external equalizer passage Locate and remove stoppage. Install strainer. Worn or eroded regulator seat Replace defective part.
MOPD Maximum Opening Pressure Difference
58
Table 17 Energy Wheel Conservation
Table 18 Gas Heater
Table 19 Electric Heater
PROBLEM POSSIBLE CAUSE SOLUTION
Inadequate wheel performance
Incorrect wheel rotation speed Check wheel rotation speed.
Worn wheel media or worn/out-of-place seals Check wheel integrity and seals. Adjust and/or replace seals.
Unanticipated entering air conditions Check entering air conditions and compare to design. Dirty media Check media for dirt and clean.
Improper wheel rotation
Misaligned belts Check drive belts for engagement with sheaves.
Improper motor operation Check drive motor and drive motor wiring for proper voltage.
Improper VFD operation Check VFD programming.
Improper VFD sensor operation Check VFD input sensor (temperature/relative humidity) for malfunctioning.
High pressure drop Unanticipated airflow Check airflow and compare to design. Dirty filters Check filters and clean/replace. Dirty media Check media for dirt and clean.
Noise Out-of-place seals Check seals and adjust. Worn bearings Check bearings. Misaligned belts Check belts for slippage.
PROBLEM POSSIBLE CAUSE SOLUTION Steady on - No operation Internal control fault
One flash - Combustion airflow fault
Faulty combustion blower Check for 230V supply and tightness at fan connec- tions. If no power, replace.Airflow switch not closing
Airflow switch opened during operation
Two flashes - Flame with no call for heat Faulty gas valve
Check voltage to gas valve with thermostat off. Valve should not be powered. If there is gas flow, replace valve.
Three flashes - Ignition lockout *
Ignition control miscommunication Reset ignition control by removing 24V power to igni- tion control terminal 24VAC.
Dirty burners Clean burners to ensure proper flame carryover.
Faulty spark igniter Check if connecting lead or spark igniter are dam- aged. If yes, replace.
Faulty flame sensor Check if connecting lead or flame probe are dam- aged and/or touching earthed components. If yes, replace.
Incorrect gas pressure at gas valve Check that the gas pressure at inlet of valve is cor- rect for the gas type. If not, correct pressure prob- lem.
Faulty gas valve Check that the gas pressure at outlet of the valve rises when valve turns on and returns to zero, or lower, when valve turns off. If not, replace.
* LED flashed on for 0.25 seconds and off for 0.25 seconds during fault condition. The pause between fault codes is 3 seconds.
PROBLEM POSSIBLE CAUSE SOLUTION
No heat
No call for heat Check that the controls are set to call for heating. No power and control voltage to heater Check that heater has power and control voltage.
Faulty component Check components with continuity meter. Replace as necessary.
Not enough heat Faulty component
Check that ampere draw is reasonably close to that on the heater data plate. If more than 10% short, begin testing individual components. Replace, as necessary.
Heat anticipator current draw too low, causing short cycling Check current draw.
Heater cycling on automatic limit Improper airflow Check for obstructions to return air, loose or broken
fan belt, and clogged filters and/or evaporator coils. Faulty temperature limit switch Test, and if necessary, replace.
Open secondary protective device Stuck contactor Check contactor.
Contractor chatter Improper wiring Check wiring. Insufficient transformer capacity Check transformer.
Element failure Corroded hardware and/or loose connections Check hardware.
Manufacturer reserves the right to discontinue, or change at any time, specifications or
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