Carrier 38VMR072-336 Installation Instruction PDF

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Summary of Content for Carrier 38VMR072-336 Installation Instruction PDF

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

2021 Carrier. All rights reserved. Edition Date: 06/21 Form No: 38VMR-8SI Printed in U.S.A. Replaces: 38VMR-7SI

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Installation and Maintenance Instructions CONTENTS

Page SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . 1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 DIMENSIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Step 1 Unpack and Inspect Units . . . . . . . . . . . 13 Step 2 Position the Unit . . . . . . . . . . . . . . . . . . . 15 Step 3 Connect Refrigerant Piping . . . . . . . . . 23 Step 4 Pressure and Vacuum Test System . . 26 Step 5 Adjust Refrigerant Charge . . . . . . . . . . . . 26 Step 6 Complete Electrical Connections . . . . . . . 28 START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Snow Blowing Function . . . . . . . . . . . . . . . . . . . . . 36 Pre-Start Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

SAFETY CONSIDERATIONS Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions that may cause death, personal injury, or property damage. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Follow all safety codes. Wear safety glasses, protective clothing, and work gloves. Use quenching cloth for brazing operations. Have a fire extinguisher available. Read these instructions thoroughly, and follow all warnings or cautions included in the literature and attached to the unit. Consult local building codes and the current editions of the National Electrical Code (NEC) ANSI/NFPA (American National Standards Institute/National Fire Protection Association) 70. In Canada, refer to the current editions of the Canadian Electrical Code CSA (Canadian Standards Association) C22.1. Understand the signal words DANGER, WARNING, and CAUTION. DANGER identifies the most serious hazards, which will result in severe personal injury or death. WARNING signifies hazards that could result in personal injury or death. CAUTION is used to identify unsafe practices, which would result in minor personal injury or product and property damage. Recognize the safety information. This is the safety-alert symbol ( ). When this symbol is displayed on the unit and in instructions or manuals, be alert to the potential for personal injury. Installing, starting up, and servicing equipment can be hazardous due to system pressure, electrical components, and equipment location.

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.

WARNING When installing the equipment in a small space, provide adequate measures to avoid refrigerant concentration exceeding safety limits due to refrigerant leak. In case of refrigerant leak during installation, ventilate the space immediately. Failure to follow this procedure may lead to personal injury.

38VMR072-336 Outdoor Unit for

Variable Refrigerant Flow (VRF) Heat Recovery System

2

GENERAL The VRF (variable refrigerant flow) heat recovery system offers a variety of indoor unit types and sizes, ranging from 0.5 to 8 tons. The 38VMR heat recovery outdoor units are available in three different cabinet sizes. The system has the capability to operate between 50% and 150% connected capacity, allowing the system to be tailored to the needs of the customer and the application. The equipment is initially protected under the manufacturers standard warranty; however, the warranty is provided under the condition that the steps outlined in this manual for initial inspection, proper installation, regular periodic maintenance, and everyday operation of the unit be followed in detail. This manual should be fully reviewed in advance before initial installation, start-up, and any maintenance. Contact your local sales representative or the factory with any questions BEFORE proceeding. See Fig. 1 for model number nomenclature. Table 1 shows components that may or may not be used for a particular installation. Tables 2-7 lists physical data for each unit size. Figs. 4-6 show the unit dimensions.

WARNING DO NOT USE A TORCH to remove any component. The system contains oil and refrigerant under pressure. To remove a component, wear protective gloves and goggles and proceed as follows: a. Shut off electrical power to the unit. b. Recover refrigerant to relieve all pressure from the

system using both the high-pressure and low-pressure ports.

c. Traces of vapor should be displaced with nitrogen, and the work area should be well ventilated. Refrigerant in contact with an open flame produces toxic gases.

d. Cut the component connection tubing with a tubing cutter and remove component from the unit. Use a pan to catch any oil that may come out of the lines and as a gage for how much oil to add to the system.

e. Carefully unsweat the remaining tubing stubs when necessary. Oil can ignite when exposed to a torch flame.

Failure to follow these procedures may result in personal injury or death.

CAUTION DO NOT re-use compressor oil or any oil that has been exposed to the atmosphere. Dispose of oil per local codes and regulations. DO NOT leave refrigerant system open to air any longer than the actual time required to service the equipment. Seal circuits being serviced and charge with dry nitrogen to prevent oil contamination when timely repairs cannot be completed. Failure to follow these procedures may result in damage to equipment.

Voltage (V-Ph-Hz)VM VRF

Equipment Type 38 Outdoor Unit

Product Type Blank

5 208/230-3-60 6 460-3-60

Model Number Modifier A Revision Number

Capacity (Btuh) 072 72,000 096 96,000 120 120,000 144 144,000 168 168,000

192 192,000

System Type R Heat Recovery

Variations

Cabinet Type S Standard, L Large

D Domestic

38 VM A 072 R D S 5 - 1

Packaging 1 USA & Canada

240 216 216,000

264 240,000 264,000

288 288,000

312 312,000 336 336,000

Fig. 1 Model Number Nomenclature

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Table 1 Components Shipped with Unit

The pressure test pipes and screws are shipped inside the outdoor unit in a bag. Fig. 2 shows the location of this bag inside the front panel of the unit.

NAME SHAPE QUANTITY FUNCTION

Seal plug 8 For maintenance

Simple wrench 1 For removing the side plate screws

90 degree elbow 2

(Sizes 072 to 120 only)

For outdoor unit and refrigerant pipe connection

Connective pipe accessories

2 (Sizes 144

to 240 only)

2

2 For MDC and refrigerant pipe connection

Large Outdoor Unit Pressure Test Parts (Sizes 240L to 336 only) Pressure test pipes (see Figs. 2 and 3)

Screw bag 1 For mounting pressure test pipes (See Figs. 2 and 3)

Ring terminal 4 For connecting the power and grounding cables

Bag located inside front panel

Fig. 2 Pressure test pipes and screw bag location Fig. 3 Pressure test pipes (Sizes 240L-336)

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Table 2 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 072 096 120 NOMINAL TONS (Ton) 6 8 10 POWER SUPPLY (V-Ph-Hz)* 208/230-3-60 COOLING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS

Nominal (kBtu/h) 70.0 96.0 119.7 Rated (kBtu/h) 69.0 92.0 114.0

HEATING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS Nominal (kBtu/h) 80.0 108.0 126.0 Rated (kBtu/h) 77.0 103.0 120.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 4.20 6.20 9.30 IEER (Btu/W) 24.60 23.70 22.80

Heating Power Consumption (kW) 4.40 7.20 9.50 COP (W/W) 4.37 3.82 3.45

SCHE (Simultaneous Cooling & Heating Efficiency) 30.00 30.00 30.00 ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 5.00 7.10 9.50 IEER (Btu/W) 24.20 24.30 23.20

Heating Power Consumption (kW) 5.70 8.00 9.80 COP (W/W) 3.85 3.63 3.45

SCHE (Simultaneous Cooling & Heating Efficiency) 27.40 27.70 26.70 UNIT DIMENSIONS (W x H x D) (in.) 52-3/4 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 672 COMPRESSOR

Type INVERTER-driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 6900 7600 8100 Motor Output (W) 180 x 2 210 x 2 250 x 2

CONDENSER COIL

Coil Qty. 1 Ft2 30-1/2 Rows 3 FPI 17

REFRIGERANT SHIPPING CHARGE (lb) 26.5 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 3/4 7/8 1-1/8 Liquid Side (in.) 5/8 3/4

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 15 20 24 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50% to 150% SOUND PRESSURE LEVEL (db(A)) 58.40 61.70 62.70

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

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Table 3 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 144 168 192 216 240RDS NOMINAL TONS (Ton) 12 14 16 18 20 POWER SUPPLY (V-Ph-Hz)* 208/230-3-60 COOLING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS

Nominal (kBtu/h) 142.8 165.9 191.1 214.2 231.0 Rated (kBtu/h) 136.0 158.0 182.0 204.0 220.0

HEATING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS Nominal (kBtu/h) 160.0 188.0 215.0 243.0 257.0 Rated (kBtu/h) 150.0 180.0 204.0 222.0 236.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 9.00 11.90 14.70 16.80 19.70 IEER (Btu/W) 24.40 23.10 23.90 23.00 22.40

Heating Power Consumption (kW) 9.60 13.30 16.20 18.00 20.20 COP (W/W) 3.98 3.59 3.38 3.34 3.20

SCHE (Simultaneous Cooling & Heating Efficiency) 26.50 27.00 28.20 27.30 27.00 ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 10.60 13.30 15.90 17.90 20.40 IEER (Btu/W) 24.00 22.90 23.60 21.70 21.00

Heating Power Consumption (kW) 11.80 14.40 17.40 19.10 20.90 COP (W/W) 3.60 3.54 3.33 3.29 3.20

SCHE (Simultaneous Cooling & Heating Efficiency) 26.50 25.20 25.50 26.50 26.50 UNIT DIMENSIONS (W x H x D) (in.) 78-3/8 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 1137 COMPRESSOR

Type INVERTER-Driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 10,100 10,100 11,300 12,300 12,300 Motor Output (W) 260 x 2 260 x 2 340 x 2 440 x 2 440 x 2

CONDENSER COIL

Coil Qty. 2 Ft2 26 Rows 3 FPI 17

REFRIGERANT SHIPPING CHARGE (lb) 44.20 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 1-1/8 1-3/8 Liquid Side (in.) 7/8 1-1/8

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 29 34 39 44 49 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50% to 150% SOUND PRESSURE LEVEL (db(A) 63.30 63.30 64.90 67.10 67.10

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

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Table 4 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 240RDL 264 288 312 336 NOMINAL TONS (Ton) 20 22 24 26 28 POWER SUPPLY (V-Ph-Hz)* 208/230-3-60 COOLING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS

Nominal (kBtu/h) 239.4 260.4 287.7 310.8 323.4 Rated (kBtu/h) 228.0 248.0 274.0 296.0 308.0

HEATING CAPACITY WITH NON-DUCTED and DUCTED INDOOR UNITS Nominal (kBtu/h) 270.0 295.0 323.0 343.0 353.0 Rated (kBtu/h) 256.0 282.0 298.0 314.0 322.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 20.36 23.18 26.35 31.83 33.12 IEER (Btu/W) 22.40 22.00 21.00 20.20 19.50

Heating Power Consumption (kW) 20.22 23.48 25.84 28.85 29.58 COP (W/W) 3.71 3.52 3.38 3.20 3.20

SCHE (Simultaneous Cooling & Heating Efficiency) 30.00 29.60 29.30 28.50 28.00 ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 20.73 23.18 27.96 31.16 33.12 IEER (Btu/W) 21.10 21.00 20.50 19.80 19.00

Heating Power Consumption (kW) 21.02 23.68 25.54 27.39 29.22 COP (W/W) 3.57 3.49 3.42 3.36 3.23

SCHE (Simultaneous Cooling & Heating Efficiency) 28.0 27.5 27.0 26.50 25.50 UNIT DIMENSIONS (W x H x D) (in.) 105-7/8 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 1627 COMPRESSOR

Type INVERTER-Driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 14,500 15,500 15,500 16,500 16,500 Motor Output (W) 225 x 4 265 x 4 265 x 4 310 x 4 310 x 4

CONDENSER COIL

Coil Qty. 2 Ft2 28-3/4 Rows 3 FPI 16

REFRIGERANT SHIPPING CHARGE (lb) 77.20 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 1-3/8 1-5/8 Liquid Side (in.) 1-1/8

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 49 54 59 64 64 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50% to 150% SOUND PRESSURE LEVEL (db(A) 63.90 64.80 64.80 66.40 67.20

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

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Table 5 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 072 096 120 NOMINAL TONS (Ton) 6 8 10 POWER SUPPLY (V-Ph-Hz)* 460-3-60 COOLING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS

Nominal (kBtu/h) 72.0 96.0 119.7 Rated (kBtu/h) 69.0 92.0 114.0

HEATING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS Nominal (kBtu/h) 80.0 108.0 126.0 Rated (kBtu/h) 77.0 103.0 120.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 4.20 6.20 9.30 IEER (Btu/W) 24.60 23.70 22.80

Heating Power Consumption (kW) 4.40 7.20 9.50 SCHE (Simultaneous Cooling & Heating Efficiency) 30.00

ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 5.00 7.10 9.60 IEER (Btu/W) 24.20 24.30 23.20

Heating Power Consumption (kW) 5.70 8.00 9.80 SCHE (Simultaneous Cooling & Heating Efficiency) 27.40 27.70 26.70

UNIT DIMENSIONS (W x H x D) (in.) 52-3/4 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 672 COMPRESSOR

Type INVERTER-driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 6900 7600 8100 Motor Output (W) 180 x 2 210 x 2 250 x 2

CONDENSER COIL

Coil Qty. 1 Ft2 30-1/2 Rows 3 FPI 17

REFRIGERANT SHIPPING CHARGE (lb) 26.50 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 3/4 7/8 1-1/8 Liquid Side (in.) 5/8 3/4

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 15 20 24 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50%~150% SOUND PRESSURE LEVEL (db(A) 58.40 61.70 62.70

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

8

Table 6 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 144 168 192 216 240RDS NOMINAL TONS (Ton) 12 14 16 18 20 POWER SUPPLY (V-Ph-Hz)* 460-3-60 COOLING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS

Nominal (kBtu/h) 142.8 165.9 191.1 214.2 231.0 Rated (kBtu/h) 136.0 158.0 182.0 204.0 220.0

HEATING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS Nominal (kBtu/h) 160.0 188.0 215.0 243.0 257.0 Rated (kBtu/h) 150.0 180.0 204.0 222.0 236.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 9.00 11.90 14.70 16.80 19.70 IEER (Btu/W) 24.40 23.10 23.90 23.00 22.40

Heating Power Consumption (kW) 9.60 13.30 16.20 18.00 20.20 SCHE (Simultaneous Cooling & Heating Efficiency) 26.50 27.00 28.20 27.30 27.00

ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 10.60 13.30 15.90 17.90 20.40 IEER (Btu/W) 24.00 22.90 23.60 21.70 21.00

Heating Power Consumption (kW) 11.80 14.40 17.40 19.10 20.90 SCHE (Simultaneous Cooling & Heating Efficiency) 26.50 25.20 25.50 26.50 26.50

UNIT DIMENSIONS (W x H x D) (in.) 78-3/8 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 1137 COMPRESSOR

Type INVERTER-driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 10,100 10,100 11,300 12,300 12,300 Motor Output (W) 260 x 2 260 x 2 340 x 2 440 x 2 440 x 2

CONDENSER COIL

Coil Qty. 2 Ft2 26 Rows 3 FPI 17

REFRIGERANT SHIPPING CHARGE (lb) 44.20 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 1-1/8 1-3/8 Liquid Side (in.) 7/8 1-1/8

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 29 34 39 44 49 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50%~150% SOUND PRESSURE LEVEL (db(A) 63.30 63.30 64.90 67.10 67.10

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

9

Table 7 38VMR Physical Data

* The source of voltage must not fluctuate more than 10%. Rated conditions:

Cooling: Indoor air temperature 80F dry bulb / 67F wet bulb, Outdoor air temperature 95F dry bulb. Heating: Indoor air temperature 70F dry bulb, Outdoor air temperature 47F dry bulb / 43F wet bulb.

The amount does not consider extra piping length. Refrigerant must be added on site in accordance with the actual piping length. These values, measured in anechoic chamber, at a point 1 m in front of the unit at a height of 1.4 m.

During actual operation, these values are normally somewhat higher as a result of ambient conditions.

UNIT 240RDL 264 288 312 336 NOMINAL TONS (Ton) 20 22 24 26 28 POWER SUPPLY (V-Ph-Hz)* 460-3-60 COOLING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS

Nominal (kBtu/h) 239.4 260.4 287.7 310.8 323.4 Rated (kBtu/h) 228.0 248.0 274.0 296.0 308.0

HEATING CAPACITY WITH NON-DUCTED AND DUCTED INDOOR UNITS Nominal (kBtu/h) 270.0 295.0 323.0 343.0 357.0 Rated (kBtu/h) 256.0 282.0 298.0 314.0 322.0

ELECTRICAL CHARACTERISTICS WITH NON-DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 20.36 23.18 26.35 31.83 33.12 IEER (Btu/W) 22.40 22.00 21.00 20.20 19.50

Heating Power Consumption (kW) 20.22 23.48 25.84 28.85 29.58 SCHE (Simultaneous Cooling & Heating Efficiency) 30.00 29.60 29.30 28.50 28.00

ELECTRICAL CHARACTERISTICS WITH DUCTED INDOOR UNITS

Cooling Power Consumption (kW) 20.73 23.94 27.96 31.16 33.23 IEER (Btu/W) 21.10 21.00 20.50 19.80 19.00

Heating Power Consumption (kW) 21.02 23.68 25.54 27.39 29.22 SCHE (Simultaneous Cooling & Heating Efficiency) 28.00 27.50 27.00 26.50 25.50

UNIT DIMENSIONS (W x H x D) (in.) 105-7/8 x 64-3/8 x 31-1/8 UNIT NET WEIGHT (lb) 1627 COMPRESSOR

Type INVERTER-driven Scroll Hermetic Motor Output (kW) 23.25

FAN UNIT Air Volume (cfm) 14,500 15,500 15,500 16,500 16,500 Motor Output (W) 225 x 4 280 x 4 280 x 4 330 x 4 330 x 4

CONDENSER COIL

Coil Qty. 2 Ft2 28-3/4 Rows 3 FPI 16

REFRIGERANT SHIPPING CHARGE (lb) 77.20 REFRIGERANT CONNECTING PORT DIAMETER

Gas Side (in.) 1-3/8 1-5/8 Liquid Side (in.) 1-1/8

OPERATION TEMPERATURE RANGE Cooling (F db) 5~125 Heating (F wb) -13~64

MAX ESP (in. wg) 0.24 Max. MAX NUMBER OF CONNECTED INDOOR UNITS 49 54 59 64 64 MAXIMUM CAPACITY OF COMBINED INDOOR UNITS 50%~150% SOUND PRESSURE LEVEL (db(A) 64.00 65.80 65.80 66.70 67.20

LEGEND COP Coefficient of Performance db Dry Bulb IEER Integrated Energy Efficiency Ratio ESP External Static Pressure wb Wet Bulb

10

DIMENSIONS

Fig. 4 38VMR Dimensions (6 - 10 Tons) Table 8 Dimensions (in inches)

MODEL A B 072 5/8 3/4 096 3/4 7/8 120 3/4 1-1/8

64 -3

/8

52-3/4

31 -1

/8

Control Box

Intake Air

Conencting pipe (Accessories)

Front Panel

Intake Air

Front Panel

7-3/47-3/4 21-3/4

Gauge Port

High Pressure Side

Low Pressure Side

31-1/8 29-7/8 28-1/2

4-7/8 42-7/8 4-7/8

52-3/4

Bottom View

Front View

Top View

Left View

Discharge Air

Anchor Bolt Holes

NOTE: All dimensions are in inches.

11

DIMENSIONS (CONT.)

Fig. 5 38VMR Dimensions (12 - 20S Tons) Table 9 Dimensions (in inches)

MODEL A B 144 7/8 1-1/8 168 7/8 1-1/8 192 7/8 1-1/8 216 1-1/8 1-1/8 240 1-1/8 1-3/8

DETAIL C SCALE 1:3

Gauge port

(Detect the pressure/ refrigerant replenishment/ vacuumize)

High pressure side

(The connected pipe diameter A)

(The connected pipe diameter B)

Low pressure side

Power line hole

Discharge air

Top view

Front view

Left view

Bottom View

Control box

Front panel

Intake airIntake air

Control box

3

1

C

D D

Front panel

2

NOTE: All dimensions are in inches.

12

DIMENSIONS (CONT.)

Fig. 6 38VMR Dimensions (20L-28 Tons)

Table 10 Dimensions (in inches) MODEL A B

240 1-1/8 1-3/8 264 1-1/8 1-3/8 288 1-1/8 1-3/8 312 1-1/8 1-5/8 336 1-1/8 1-5/8

35-3/4 24-5/8 35-3/4 4-1/44-1/4

105-7/8

105-7/8

3 1-

1/ 8

Front view

Top view

Bottom view

Front panel

Control box

Intake airIntake air

C

64 -3

/8

16 -1

/8

16 2- 1/

8

2- 1/

8

31 -1

/8

29 -1

/2

28 -1

2

Discharge air

SCALE 1:3 DETAIL C

Gauge port

(Detect the pressure/ refrigerant replenishment/ vacuumize)

High pressure side

(The connected pipe diameter A)

Low pressure side

(The connected pipe diameter B)

Section D-D

Power line hole

7-7/8 7-7/8 16-1/2

21-1/2 7-7/8

2

-3 /8

1 3-1/4 2-3/8

5-3/8

Left view

Control box

Front panel

NOTE: All dimensions are in inches.

13

INSTALLATION Step 1 Unpack and Inspect Units Units are packaged for shipment to avoid damage during normal transit and handling. It is the receiving partys responsibility to inspect the equipment upon arrival. Any obvious damage to the carton and/or its contents should be reported on the bill of lading and a claim should be filed with the transportation company and the factory. The unit should always be stored in a dry place and in the proper orientation as marked on the carton. After determining the condition of the unit exterior, carefully remove the packaging and inspect for hidden damage. Check to ensure that items such as thermostats and controllers are accounted for whether packaged separately or shipped at a later date. Any hidden damage should be recorded, a claim should be filed with the transportation company, and the factory should be notified. In the event a claim for shipping damage is filed, the unit, shipping carton, and all packing must be retained for physical inspection by the transportation company. All units should be stored in the factory shipping carton with internal packaging in place until installation. PROTECTING UNITS FROM DAMAGE Do not apply force or pressure to the coil, piping, or drain stub-outs during handling. All units should be handled using the proper forklift holes or lifting locations. The unit must always be properly supported. Temporary supports used during installation or service must be adequate to hold the unit securely. To maintain warranty, protect units against hostile environments, theft, vandalism, and debris on

job site. Do not allow foreign material to fall into the unit. Failure to do so may have serious adverse effects on unit operation. Failure of any unit caused by deposits of foreign material inside the unit will not be covered by the manufacturers warranty. Some units and/or job conditions may require some form of temporary covering during construction. PREPARING JOB SITE FOR UNIT INSTALLATION To save time and to reduce the possibility of costly errors, set up a complete sample installation in a typical location at the job-site. Check all critical dimensions such as pipe and wire connection requirements. Refer to job drawings and product dimension drawings as required. Instruct all trades in their parts of the installation. Units must be installed in compliance with all applicable local code requirements. IDENTIFYING AND PREPARING UNITS Be sure the power requirements match the available power source. Refer to the unit nameplate and the wiring diagram. In addition: Check all tags on unit to determine if shipping screws are

to be removed. Remove screws as directed. Rotate the fan blade by hand to ensure that the fan is

unrestricted and can rotate freely. Check for shipping damage and fan obstructions.

14

PRESSURE TEST PIPE CONNECTIONS (SIZES 240L - 336 ONLY) 1. Use screws provided in Screw Bag to secure the three

Pressure Test Pipes to corner panel of unit.

2. Remove the caps on the three service ports. 3. Connect the three pressure test pipes to their respective

service ports.

REFRIGERANT PIPING MEASUREMENTS

Figure 7 and Table 11 show permitted piping lengths and height differences for system. Equivalent length of the Y joint is 1.64 feet.

Fig. 7 Piping Lengths and Heights

Table 11 Permitted Pipe Lengths and Drop Heights

* If no indoor unit size 72K or 96K are connected to the MDC port, and if the Height between MDC and Indoor Unit is <49 ft, the distance between MDC and Indoor Unit can be extended up to 197 feet. Refer to 38VMR Engineering Manual for details. ** The maximum piping height difference allowable for indoor unit capacity 72K or more is 32 feet. *** The maximum piping height difference allowable for indoor unit capacity 72K or more is 64 feet. The Y-joint must be installed parallel to the ground, and the angle of the joint should not be greater than 10. Positioning the Y-joint more than 10 from parallel can cause malfunctions. See Fig. 47.

DESCRIPTION ALLOWABLE VALUE (ft) PIPES

Piping Length

Total Extension of Pipe (Liquid Pipe) Actual Length 3280 A+B+C+D+E+a+b+c+d+e+f+m

Furthest Piping Length Equivalent Length 623

A+C+E+f Actual Length 541

Distance Between Outdoor Unit & Main MDC Actual Length 360 A

Distance Between MDC & Indoor Unit 131* B+d, C+D+e, C+E+f, m

Piping Height Difference

Height Between Outdoor & Indoor Unit Outdoor Unit Above 164 H Outdoor Unit Below 131 H1

Height Between MDC & Indoor Unit 49** h1 Height Between Indoor Units 98*** h2

Height Between MDCs 49 h3

15

Step 2 Position the Unit Units are recommended for outdoor use. For single unit installation, see Fig. 11. For multiple or parallel unit installation, see Fig. 12. The unit should be mounted on concrete and fastened to anchor bolts to prevent the unit from tipping. Units installed in areas that are exposed to ambient temperatures below freezing (32F) should be installed on a snow/ice stand as defined by local codes.

Fig. 8 Corner Weights (Sizes 072-120)

Fig. 9 Corner Weights (Sizes 144-240s)

Fig. 10 Corner Weights (Sizes 240L-336)

Fig. 11 Single Unit Installation

Fig. 12 Multiple or Parallel Unit Installation

HANDLING THE UNIT The angle of inclination should not be more than 15 when carrying the unit to avoid overturn of the unit. Forklift handling: When using a forklift for lifting or transporting the unit, insert the prongs of the forklift into the rectangular holes as shown in Figs. 13-15.

187

116 284

111

Corner weights in lbs.

(Back Left Corner)

294

249 375

263

Corner weights in lbs.

(Back Left Corner)

329

478 480

417

Corner weights in lbs.

(Back Left Corner)

Fig. 13 Handling the Unit Using a Forklift

16

Fig. 15 Handling Large Cabinet Using a Forklift LIFTING THE UNIT Make sure the lifting cable is able to withstand the units weight. Connect the cables to the bottom rigging hole locations shown in Fig. 16. Use 2 cables, each connected diagonally to the bottom rigging hole locations. Make sure each cable is long enough to avoid excess tension and force on the surfaces of the unit. To avoid damage to the unit from lifting cables, 2-inch thick wood, cloth, or cardboard spacers should be installed between the cables and contact surfaces of the unit.

SOLID BASE REQUIREMENTS The units base must be made of solid structure (e.g.

concrete). Ensure that the base is level and that the units weight is

distributed evenly. Create an outlet near the base for drainage. Ensure the roof can handle the units weight if mounted

on the roof. When piping from the bottom of the unit, the base height

should be no less than 8 inches. See Figs. 17-19 for additional specifications.

Fig. 17 Solid Base (Side View)

DANGER Do not stand below the unit while it is suspended in the air. If the unit were to fall, it will lead to severe personal injury or death.

Fig. 14 Handling the Unit Using a Forklift

Fig. 16 Lifting the Unit with Cables

4 in.

Outdoor unit

Solid base

3/8 Expansion bolt

Rubber shocking proof mat

8 in.

Solid ground or roofing

17

Fig. 18 Solid Base (Front and Side View)

Fig. 19 Concrete Base (Front and Side View) SPACE REQUIRED FOR INSTALLATION AND MAINTENANCE Ensure there is enough space provided for installation and maintenance. See Fig. 20.

Fig. 20 Space Required for Maintenance If the outdoor unit is higher than the surrounding obstacle, follow Fig. 21-23.

Fig. 21 Space Required for One Row

Fig. 23 Space Required for More Than Two Rows If the outdoor unit is lower than the surrounding obstacles, add a field-supplied duct to deflect condenser air flow as shown in Fig. 24.

Fig. 24 Condenser Air Flow Deflector NOTE: A discharge air deflector is needed if vertical separation, C, from the top of the unit to any obstruction above the ODU is less than 8 feet.

Fig. 22 Space Required for Two Rows

Side-Discharge Deflector

Front/Rear-Discharge Deflector

A > 45 B > 11-13/16 [300]

C > 39-3/8 [1000] D Airflow Deflector

18

MOUNT THE AIR DEFLECTOR Model 072-120 Installation Instructions

Example A

NOTE: All dimensions are shown in inches. Fig. 25 072-120 Model Installation Instruction

(Example A)

Example B

NOTE: All dimensions are shown in inches. Fig. 26 072-120 Model Installation Instruction

(Example B)

A A>11-7/8

B B>9-7/8

C C<118-1/8

D 24-3/4 <26

E E=A+24-3/4

F 12-5/8

G 11-7/8

<15

Air outlet louver dimension (optional)

Radius

Radius

Support

61/51- 3

24-3/4

3-1/2

Remove the two discharge grills first

12 ST3.9x18mm self-threading screws

24 -5

1/ 64

A A>11-7/8

B B>9-7/8

C C<118-1/8

D D=A+50-3/4

<15

Air outlet louver dimension (optional)

Radius

Radius

Support

4

2/1-3

8/5

4/3-50

Remove the two discharge grills first

12 ST3.9x18mm self-threading screws

24-3/4

19

Model 144-240S Installation Instructions

NOTE: All dimensions are shown in inches. Fig. 27 144-240S Model Installation Instruction

(Example A)

Model 240L-336 Installation Instructions

NOTE: All dimensions are shown in inches. Fig. 28 240L-336 Model Installation Instruction

(Example A)

A A>11-7/8

B B>9-7/8

C C<118-1/8

D 28-3/4 <30-5/16

E E=A+28-3/4

F 12-5/8

G 25-7/8

<15

Support

Radius

Radius

Air outlet louver dimension (optional)

4

28-3/4

3-1/2

12 ST3.9x18mm self-threading screws

Remove the two discharge grills first

A A>11-7/8

B B>9-7/8

C C<118-1/8

D 28-3/4 <30-5/16

E E=A+28-3/4

F 12-5/8

G 12-7/8

<15

100

Support

Radius

Radius

Air outlet louver dimension (optional)

4

28-3/4

3-1/2

16 ST3.9x18mm self-threading screws

Remove the four discharge grills first

103-7/8

93-1/4

64-7/8 41-1/4

24 -3

/4

20

Table 11 Static Pressure

Table 12 High Static Pressure Function Settings

NOTES: Before installing the air deflector, ensure the discharge

air grille has been taken off, otherwise the air supply efficiency would be reduced.

Once mounting the air outlet louver to the duct, air volume, cooling and heating capacity, and efficiency may be reduced. Thus, it is not recommended to mount an air outlet louver. If use is necessary, adjust the air outlet louver to no more than 15

Only one bend is allowed in the air duct to avoid operational issues.

Install a soft connection between the air duct and the unit to reduce noise.

The discharge air duct should be flush with the top of the unit and not fit over it. This could obstruct unit side panels.

Discharge air ducts must be installed independently. Discharge air deflectors cannot be combined between units. The following figure shows improper installation.

Fig. 29 Improper installation of discharge air deflectors

Fig. 30 Static Pressure vs. Airflow (072 Model)

Fig. 31 Static Pressure vs. Airflow (096 Model)

Fig. 32 Static Pressure vs. Airflow (120 Model)

Fig. 33 Static Pressure vs. Airflow (144 and 168 Models)

Fig. 34 Static Pressure vs. Airflow (192 Model)

Static Pressure Remark

0Pa Factory default

0~20Pa Remove discharge grille and connect to the wind duct which is less than 3 meters.

Above 20Pa To enable operation for high static pressure, set the function setting as shown in Table 12.

Setting Pressure

n 82 0.08 in.WG [20Pa]

n 83 0.16 in.WG [20Pa]

n 84 0.24 in.WG [20Pa]

S ta

tic p

re ss

ur e

(in . W

G )

Air volume(CFM)

0

0.04

0.08

0.12

0.16

0.2

0.24

0.28

6000 6500 7000 7500 8000

0

0.08

0.16

0.24

(in.WG)

S ta

tic p

re ss

ur e

(in . W

G )

Air volume(CFM)

0

0.04

0.08

0.12

0.2

0.16

0.24

0.28

6500 7000 7500 8000 8500

0

0.08

0.16

0.24

(in.WG)

S ta

tic p

re ss

ur e

(in . W

G )

Air volume(CFM)

0

0.04

0.08

0.12

0.2

0.16

0.24

0.28

7400 7600 7800 8000 8200 8400 8600 8800

0

0.08

0.16

0.24

(in.WG)

Air volume(CFM)

S ta

tic p

re ss

ur e

(in . W

G )

0

0.04

0.08

0.12

0.2

0.16

0.24

0.28

8500 9000 9500 10000 10500 11000 11500

0

0.08

0.16

0.24

(in.WG)

Air volume(CFM)

S ta

tic p

re ss

ur e

(in . W

G )

0

0.04

0.08

0.12

0.2

0.16

0.24

0.28

10000 10500 11000 11500 12000 12500 13000

0

0.08

0.16

0.24

(in.WG)

21

Fig. 35 Static Pressure vs. Airflow (216 and 240S Models)

Fig. 36 Static Pressure vs. Airflow (240L Model)

Fig. 37 Static Pressure vs. Airflow (264 and 288 Models)

Fig. 38 Static Pressure vs. Airflow (312 and 336 Models)

Air volume(CFM)

S ta

tic p

re ss

ur e

(in . W

G )

0

0.04

0.08

0.12

0.2

0.16

0.24

0.28

11000 12000 13000 14000 15000

0

0.08

0.16

0.24

(in.WG) St

ati c p

re ss

ur e (

in. W

G)

Air volume(CFM)

0

0.05

0.1

0.15

0.2

0.25

0.3

11000 12000 13000 14000 15000

0

0.08

0.16

0.24

St ati

c p re

ss ur

e ( in.

W G)

Air volume(CFM)

0

0.05

0.1

0.15

0.2

0.25

0.3

12000 13000 14000 15000 16000

0

0.08

0.16

0.24

St ati

c p re

ss ur

e ( in.

W G)

Air volume(CFM)

0

0.05

0.1

0.15

0.2

0.25

0.3

13000 14000 15000 16000 17000

0

0.08

0.16

0.24

22

SNOW GUARD INSTALLATION To protect the outdoor unit coil from snow accumulation in certain climates, snow guards are recommended to be installed in the field. Refer to the snow guard installation manual for dimensional drawings for field fabrication and additional information on snow guards. The outdoor unit must be mounted at least 12 inches off the ground or 12 inches above the average snow accumulation depth, whichever is greater. Refer to the snow guard installation manual for more details. Clearances for sides and back of outdoor unit must be at least 16 inches greater than standard installation guidelines.

REMOVING THE UPRIGHT POSTS Remove the four screws from the left and right upright posts as shown in Fig. 39

Fig. 39 Removing the Upright Post Screws For medium and large cabinets, remove screw at the bottom of the center panel as shown in Fig. 40 before removing the screws shown in Fig. 39.

Fig. 40 Removing the Center Panel Screw for Medium and Large Cabinets

Rotate the upright posts 5 to 10, and lift them up about 0.079 inches (2 mm) to remove. See Fig. 41.

Fig. 41 Removing the Upright Posts

screw

5~10

Top view

23

REMOVING THE FRONT PANELS Remove the four screws on the top and bottom front panels. Lift them up about 0.12 inches (3mm) and remove as shown in Fig. 42.

Fig. 42 Removing the Front Panel Step 3 Connect Refrigerant Piping REFRIGERANT PIPING CONNECTIONS Fig. 43 describes each refrigerant pipe. When making the refrigerant piping connections, follow these steps:

1. Remove the valve caps and ensure the valves are closed. 2. Use a pipe cutter to remove small pipe caps. 3. Use a torch to remove the large pipe caps. 4. Create a small hole in the rubber gasket and feed the

connecting pipes through the hole as shown in Fig. 44. 5. Wrap a wet cloth around the valves before brazing. 6. Braze each connecting pipe to its corresponding valve.

See Fig. 45. 7. Brazing should be performed under a constant flow of

high-purity nitrogen to prevent oxidation and contamination within the piping.

NOTE: The rubber gasket helps prevent animal nesting.

Fig. 43 Pipe Description

Fig. 44 Rubber Gasket Locations

Fig. 45 Main Pipe Connections

LEGEND

1 Mixed-phase side ball valve (high pressure)

2 Gas side ball valve (low pressure)

3 Service port (for pressure testing and refrigerant charging)

24

Table 13 Main Pipe Selection (A)

Table 14 Grouped Indoor Unit Pipe Selection (B)

Table 15 Selection of Pipes Between MDCs (C,D,E)

Table 16 Indoor Unit Pipe Selection (a, b, c, d, e, f)

Fig. 46 Merge the two ports

OUTDOOR UNIT CAPACITY (kBtu/h) HIGH PRESSURE SIDE (in.) LOW PRESSURE SIDE (in.) 72 5/8 3/4 96 3/4 7/8 120 3/4 1-1/8 144 7/8 1-1/8 168 7/8 1-1/8 192 7/8 1-1/8 216 1-1/8 1-1/8 240 1-1/8 1-3/8 240L 1-1/8 1-3/8 264 1-1/8 1-3/8 288 1-1/8 1-3/8 312 1-1/8 1-5/8 336 1-1/8 1-5/8

TOTAL CAPACITY CODE OF DOWNSTREAM INDOOR UNITS (kBth/h) LIQUID SIDE (in.) GAS SIDE (in.) 54 3/8 5/8

TOTAL CAPACITY OF DOWNSTREAM INDOOR

UNITS (kBtu/h) HIGH PRESSURE SIDE (in.) LOW PRESSURE SIDE (in.) LIQUID SIDE (in.)

72 5/8 3/4 3/8

73-108 3/4 7/8 3/8

109-126 3/4 1-1/8 1/2

127-144 7/8 1-1/8 1/2

145-168 7/8 1-1/8 5/8

INDOOR UNIT CAPACITY (kBtu/h) LIQUID SIDE (in.) GAS SIDE (in.) 07, 09, 12, 15 1/4 1/2

18, 24, 30, 36, 48, 54 3/8 5/8 72 3/8 3/4 96 3/8 7/8

25

Table 17 Twinned Port Indoor Unit Pipe Selection (g,h,i,j)

Table 18 Y Joint Selection

Fig. 47 Y Joint

INDOOR UNIT CAPACITY (kBtu/h) Y JOINT MODEL LIQUID SIDE (in.) GAS SIDE (in.) g h i j

72 40VM900043

3/8 3/8 5/8 5/8 96 3/8 3/8 7/8 5/8

TOTAL CAPACITY DOWNSTREAM

INDOOR UNITS (kBtu/h) Y JOINT MODEL

HIGH PRESSURE SIDE (in.)

LOW PRESSURE SIDE (in.)

LOW PRESSURE SIDE (in.)

<72 40VM900041

5/8 3/4 3/8

73-108 3/4 7/8 3/8

109-126

40VM900042

3/4 1- 1/8 1/2

127-144 7/8 1-1/8 1/2

145-168 7/8 1-1/8 5/8

26

Step 4 Pressure and Vacuum Test System After completing the refrigerant piping, perform the following pressure test: 1. Connect the nitrogen canister to the system through the high-pressure gas side valve from the meter connector. 2. Gradually apply nitrogen pressure to 540 psig. 3. If the pressure decreases rapidly, locate and repair the leak, and pressurize the system again. 4. Repeat steps 1-3 until the system remains at 540 psig for 24 hours.

After completing the pressure test, perform the following vacuum test: 1. Relieve the system of the nitrogen gas. 2. Connect a vacuum pump capable of achieving 500 microns or lower absolute pressure. 3. Vacuum the system to 500 microns or lower and check for rapid pressure change. 4. Repeat steps 1-3 until the system remains at 500 microns or lower for one hour.

When finished, replace the vacuum pump with the R-410A refrigeration canister.

Step 5 Adjust Refrigerant Charge Calculate the amount of refrigerant to add using Tables 19 through 23 and Fig. 48.

Table 19 Refrigerant to Add per High Pressure Pipe

Table 20 Refrigerant to Add per Liquid Pipe

Table 21 Refrigerant to Add for Main MDCs

Table 22 Refrigerant to Add for Sub MDCs

HIGH PRESSURE (MIXED-PHASE) PIPE DIAMETER (in.) REFRIGERANT TO BE ADDED PER FOOT (lb/ft) 1 -1/8 0.254

7/8 0.141 3/4 0.094 5/8 0.061

LIQUID PIPE DIAMETER (in.) REFRIGERANT TO BE ADDED PER FOOT (lb/ft) 5/8 0.114 1/2 0.074 3/8 0.038 1/4 0.015

Main MDC Model Name Charge Amount per Unit (lbs) 40VMD006M--3 11.0 40VMD008M--3 11.0 40VMD010M--3 11.0 40VMD016M--3 11.0 40VMD016ML--3 15.4

Sub MDC Model Name Charge Amount per Unit (lbs) 40VMD006S--3 2.2 40VMD008S--3 2.2 40VMD010S--3 4.4 40VMD016S--3 4.4

27

Table 23 Refrigerant to Add for Connected Capacity

Fig. 48 Calculating the Amount of Refrigerant to Add MAXIMUM REFRIGERANT CHARGE There is a limit to the amount of refrigerant that can be charged into a unit regardless of the amount yielded by the formula in Fig. 48. Observe the maximum refrigerant charge in Table 24.

Table 24 Max Refrigerant Charge

* 1 maximum refrigerant charge: the amount of refrigerant to be added on site. All service valves on the outdoor units should remain fully closed. R-410A refrigerant should be added (in liquid state) at the liquid line service port on the unit. If the total calculated amount of refrigerant can be added to the system, the charging process is finished.

If the total calculated amount of refrigerant cannot be added to the system, close the valve on the refrigerant bottle, and move the charging house from the liquid line service port to the suction line service port. Open the suction and liquid service valves on the unit and start the system in cooling mode. Slowly open the valve on the refrigerant bottle and carefully release the liquid refrigerant into the suction service port. The charging process is finished when the total calculated charge amount is added completely to the system.

Total Connected Capacity of Indoor Units Charge Amount per Unit (lbs) 50%~100% 0 100%~120% 1.1 120%~130% 2.2

130%~ 3.3

Outdoor Unit Model

Name 72 96 120 144 168 192 216 240 264 288 312 336

Max *1 Refrigerant

Charge 57.32 61.73 66.14 121.25 121.25 143.30 165.34 165.34 165.34 165.34 165.34 165.34

R = (HP x RHP) + (LP x RLP) + MM + SM + CC

Legend: R = Refrigerant (lbs) HP = Actual length of high pressure at diameter (ft) RHP = Refrigerant to add per high pressure pipe (lbs/ft) (Table 15) LP = Actual length of liquid pipes at diameter (ft) RLP = Refrigerant to add per liquid pipe (lbs/ft) (Table 16) MM = Refrigerant to add for Main MDCs (lbs/ft) (Table 17) SM = Refrigerant to add for Sub MDCs (lbs/ft) (Table 18) CC = Refrigerant to add for connected capacity (lbs/ft) (Table 19)

28

Step 6 Complete Electrical Connections POWER SUPPLY Electrical characteristics of the available power supply must agree with the unit nameplate rating. Circuit breaker size and supply voltage must be as shown in Table 25.

Table 25 38VMR Electrical Data

WARNING Electrical shock can cause personal injury and death. Disconnect the power supply before making wiring connections. There may be more than one disconnect switch. Tag all disconnect locations to alert others not to restore power until work is completed.

WARNING All units must be wired strictly in accordance with the wiring diagram furnished with the unit. Any wiring different from the wiring diagram could result in personal injury and property damage.

CAUTION Any original factory wiring that requires replacement must be replaced with wiring material having a temperature rating of at least 105 C. Ensure supply voltage to the unit, as indicated on the serial plate, is not more than 10% over the rated voltage or 10% under the rated voltage. Failure to follow these recommendations may result in equipment damage.

WARNING Operating unit on improper supply voltage or with excessive phase imbalance may result in equipment damage and can affect the manufacturers warranty.

Supply Voltage Power Supply

(V-Ph-Hz) 38VMR

Unit Size

POWER SUPPLY

MCA Recommended Fuse Size

208/230-3-60

072 43 50

096 45 50

120 46 50

144 70 80

168 70 80

192 71 80

216 81 100

240 81 100

240L 101 110

264 104 110

288 104 110

312 106 110

336 106 110

460-3-60

072 20 30

096 22 30

120 22 30

144 35 40

168 35 40

192 35 40

216 38 40

240 38 40

240L 52 60

264 54 60

288 54 60

312 55 60

336 55 60

LEGEND

MCA Minimum Circuit Amps

29

OPENING AND CLOSING THE ELECTRICAL COMPONENT BOX Open and close the electric control box cover as shown in Fig. 49. Do not apply excessive force to the cover. Use a screwdriver to unscrew a short distance, but do not remove the screw.

Fig. 49 Removing Screws From the Panel While holding the cover plate from the bottom, lift it slightly so that the screws clear their keyholes. Tilt it outwards and remove as shown in Fig. 50 and 51.

Fig. 50 Lift the Cover Plate Up

Fig. 51 Remove the Cover Plate

POWER WIRING Installation of wiring must conform with the local codes and with NEC ANSI/NFPA 70, current editions. Units must be electrically grounded in conformance with the code. In Canada, wiring must comply with the CSA C22.1, Electrical Code. Fig. 52 shows the location of the outdoor units power terminal block.

Fig. 52 Outdoor Unit Power Terminal Block After selecting the power wire, strip a suitable length of insulation and attach the ring terminal using the proper crimping tool. Use the ring terminals provided to connect the power wiring as shown in Fig. 53.

Fig. 53 Stripping and Attaching the Power Wire

30

Fig. 54 shows the arrangement of the power wires.

WIRING COMMUNICATION TERMINAL BLOCK Figure 55 is the communication port diagram for the outdoor unit.

Fig. 55 Outdoor Unit Communication Port Diagram

COMMUNICATION CABLE The communication cable must be a 2-core stranded shielded cable. The diameter of the wire should be AWG 18. The maximum wire length should be within 3,937 feet between the outdoor and indoor units and within 820 feet between the wired controller and indoor units. The communication wires are sold separately; however, they can be obtained through Carrier. Figure 56 shows a typical communication wire from Carrier.

Fig. 56 Typical Communication Wire

Fig. 54 Outdoor Unit Power Wiring Arrangement

LEGEND

K1, K2 Reserved

O,A To kWh Meter

X,Y To Centralized Controller

P,Q To MDC Communication Bus

H1, H2 Reserved

31

Fig. 57 Typical Communication Wiring Diagram NOTE: Field wire must use copper conductors only.

LEGEND MDC Multiport Distribution Controller

P Q X Y

X Y

Main MDC

MDC

outdoor unit Centralized controller

HA HB

P Q

P Q

P Q

P Q

P Q

P Q

wired controller

HA HB

To No.1 indoor

To No.2 indoor

To No.3 indoor

To No.4 indoor

To No.1 indoor

To No.2 indoor

To outdoor

To Sub.MDC

To outdoor

Indoor unit 1#

L1

L2

L3

L3

L3

L3

L4

L4

L5

L6

L7

L8

L9

L10

L11

Indoor unit 2#

Indoor unit 3#

Indoor unit 4#

Indoor unit 5#

Indoor unit 6#

Touch screen wired controller

Note: 24v DC Power

Note: Power from IDU

Maximum wiring length L1+L2, L5 < 3937 ft. 18 AWG, 2-Core Stranded Shield L3, L3 + L4 < 3937 ft. 18 AWG, 2-Core Stranded Shield L6+L7+L8+L9, L10 + L11 < 820 ft. 18 AWG, 2-Core Stranded Shield

H A H

B H

A H B

H A H

B H

A H B

H A H

B H

A H B

32

Network Communication Wiring for Combination of Touch Screen Central Controller and BACnet

Fig. 58 Wiring for Touch Screen Central Controller and BACnet NOTE: When an X,Y daisy chain from multiple ODU's is connected to a single port on the central controller device, a linear address structure must be applied to all connected IDU's (1-64) with no duplicating IDU addresses. The central controller will not recognize ODU the address if there are duplicates. For jobs where both touch screen central controller and BACnet are required, the network communication wiring should be as shown in Figure 58. Figure 58 shows a multiple refrigerant system with touch screen central controller and BACnet. Follow the guidelines below when combining a touch screen central controller and BACnet. BACnet only: set BACnet to Polling mode. BACnet + TSCC: set BACnet to Listen Only mode. TSCC + BACnet and STT cannot be used at same time. Only 1 Polling control can be used at a time.

STT is a Polling control TSCC is a Polling control BACnet is either a Polling control or a Listen Only control

Refer to Fig. 59 for how to change the mode of the BACnet Gateway for each X/Y/E buss. For additional details, Refer to the BACnet Interface IOM. NOTE: The BACnet gateway has the same functionality and control in both listening and polling mode in regards to BACnet communication and read write access. The listening and polling mode keeps the BACnet gateway and the Touch screen Central Controller from fighting on the X-Net (XYE) communications bus. If a Touch screen Central Controller and a BACnet Gateway are on the same X-Net (XYE) communications bus the BACnet gateway has to be configured in to listening mode and the Touch Screen Central Controller (TSCC) in polling mode. CONTROLLER CONFIGURATION In the dropdown menus, you can select the mode of each of the four X/Y/E buses. Buses can be set to Polling Mode, Listening Mode, or Idle. Click Apply after making desired changes.

Fig. 59 Configuring the Controller

Control board

Centralized Controller

X Y

33

COMMUNICATION WIRING Do not route communication wire with high voltage power wire or allow it to come in contact with non-insulated piping and sharp edges.

OPTION/EXTENSIONS OF COMMUNICATION WIRING To extend the control wiring or establish terminal connections, use the PQE connection wire supplied in the accessory kit and use the following steps. 1. Cut connector on outdoor unit side as shown in Fig. 60.

Fig. 60 Shearing Outdoor Connector 2. Strip a suitable length of the insulation layer as shown in

Fig. 61.

Fig. 61 Stripping The Wire

3. Use a screwdriver to secure the communication wire on the outdoor unit communication terminal as shown in Fig. 62.

Fig. 62 Connecting Communication Wire To Outdoor Unit Communication Terminal

If communication wires are used to connect MDC and the indoor unit, locate the corresponding port and plug it directly as shown in Fig. 63.

If it is not possible to buy communication wires from Carrier, connect the indoor unit and MDC of the communication wires using the connector provided with the accessories. See Fig. 64.

IMPORTANT: Wiring for communication shall be 2 inches or more apart from power source wiring to avoid electric noise. Do not insert control/communication and power source wire in the same conduit. Pay attention to the polarity of the communication wire.

CAUTION NEVER CONNECT the main power source to the control or communication terminal block. USE AN APPROPRIATE SCREWDRIVER for tightening the terminal screws. Do not over tighten the terminal screws. Failure to follow these procedures may result in personal injury or damage to equipment.

Fig. 63 Connecting The Communication Wires

Fig. 64 Connecting Communication Cable to Indoor Unit to Outdoor Unit using Supplied

Connector

34

START-UP TRIAL RUN

Set a different address for each indoor unit. The addresses can range from 1 to 63. The addresses are set manually using the wireless re- mote or wired controller. Set the total number of indoor units on the main board. Set the total number of indoor units on the main board.

Table 26 Unit Settings Symbol Switch Status Function Remarks

S10

10 Skip test operation (Factory default)

00 Test operation (The system can run normally on a successful auto-commissioning operation)

ENC3+S12

0-F Setting the number of indoor units 0-15.

0-9 on ENC3 refer to 0-9 indoor units; A-F on ENC3 refer to 10-15 indoor units.

000

0-F Setting the number of indoor units 16-31.

0-9 on ENC3 refer to 16-25 indoor units; A-F on ENC3 refer to 26-31 indoor units.

001

0-F Setting the number of indoor units 32-47.

0-9 on ENC3 refer to 32-41 indoor units; A-F on ENC3 refer to 42-47 indoor units.

010

0-F Setting the number of indoor units 48-63.

0-9 on ENC3 refer to 48-57 indoor units; A-F on ENC3 refer to 58-63 indoor units.

011

0

Setting the number of indoor units 64.

100

ENC4 + ENC1

0-7

The quantity of outdoor unit. 0-7 on ENC4 and 0 on ENC1.

0

35

UNIT SETTING

1. Hold the MENU(SW4) button down for five seconds to enter the menu.

2. Press UP(SW5) / DOWN(SW6) button to select and set the item. When the number is chosen, the number will flash. Press OK(SW3) to confirm and set the next num- ber. Use Table 27 as a reference.

3. Hold OK(SW3) again to exit the main menu. Table 27 List of Menu Functions

Symbol Function Item Description

n1_ Special function for debugging

n11 Test operation mode n14 Forced cooling n15 Forced heating n16 Forced defrosting

n2_ Refrigerant recycle function n21 Refrigerant recycled to outdoor unit n22 Refrigerant recycled to indoor units n23 Refrigerant recycled to piping

n3_ Error and version query n31 Historical malfunction query n32 Clear the historical malfunction n33 Version of fan inverter module

n4_ Night time setting

n41 6/10H (default) n42 6/12H n43 8/10H n44 8/12H

n5_ Silent mode setting

n51 Night silent mode n52 Silent mode n53 Super silent mode n54 Silent mode off (default)

n6_ Defrost mode setting n61 Easy to defrost n62 Standard mode (default) n63 Hard to defrost

n7_ Demand control setting

n71 Level demand 1 (No limitation) (default) n72 Level demand 2 n73 Level demand 3 n74 Level demand 4 n75 Level demand 5 n76 Level demand 6

n8_ Static pressure mode setting

n81 Standard static pressure mode (default) n82 Low static pressure mode n83 Medium static pressure mode n84 High static pressure mode

n9_ Tes setting

n91 Tes0=37F), Tes automatically adjusts (default) n92 Tes0=32F, Tes automatically adjust n93 Tes0=43F, automatically adjust n94 Low level 1 (Tes=48F),locked n95 Low level 2 (Tes=43F),locked n96 Medium level 1 (Tes=37F),locked n97 Medium level 2 (Tes=32F),locked n98 High level (Tes=27F),locked

nA_ Tcs setting

nA1 Tcs=118F, Tsc automatically adjust (default) nA2 Tcs=122F, Tsc automatically adjust nA3 Tcs=113F, Tsc automatically adjust nA4 Low level 1 (Tcs=118F),locked nA5 Low level 2 (Tcs=111F),locked nA6 Medium level 1 (Tcs=115F),locked nA7 Medium level 2 (Tcs=118F),locked nA8 High level (Tcs=124F),locked

nb_ Temperature unit setting nb1 Temperature unit (Celsius) nb2 Temperature unit (Fahrenheit) (default)

nC_

T4 sensor (outdoor temperature) threshold to enable Auxiliary Heat. Aux heat will enable when outdoor temperature falls 1.8F below this

temperature.

nC1 Auxiliary heat disabled nC2 5F nC3 15F nC4 25F nC5 35F nC6 45F nC7 55F nC8 65F

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

2021 Carrier. All rights reserved. Edition Date: 06/21 Form No: 38VMR-8SI Printed in U.S.A. Replaces: 38VMR-7SI

36

Snow-Blowing Function 1. Press SW5 button on spot check box of the outdoor unit

to enter the snow-blowing function. It will display Sn0 for 15 seconds.

2. Press SW5 button again to exit the snow-blowing function. It will display Sn1 for 15 seconds.

The snow-blowing modes can be selected through S11 dip switch on spot check box.

If the unit receives a startup signal, it will exit the snow- blowing function.

Pre-Start Check Check that the refrigerant pipe line and communication

wire with indoor and outdoor unit have been connected to the same refrigeration system.

Outdoor units require either 208/230-3-60 or 460-3-60 power. Verify that the power and phase requirements are correct and all three legs are present.

Check that power sources voltage is within 10% of the rated voltage.

Check and confirm that the power and control wire are correctly connected.

Check that the wired controllers are properly connected. Before powering on, confirm there is no short circuit for

each line. Check that all units have passed a nitrogen pressure test

for 24 hours. Provide the customer accurate as-built drawings and

documents, including actual piping lengths and locations, unit addresses, settings, etc.

Ensure additional refrigerant charge calculations are correct and that the system is charged accordingly.

Energize the outdoor units for at least 24 hours before system startup to ensure proper oil temperature has been achieved.

Ensure all refrigerant valves on the outdoor units are fully open. Ensure the oil balancing valves are open for 2 and 3-module systems. If these valves are not fully open equipment damage may occur.

PRE-START CHECK Make sure the refrigerant pipe line and communication

wire with the indoor and outdoor unit are connected to the same refrigeration system.

Outdoor units require either 208/230-3-60 or 460-3-60 power. Verify that the power and phase requirements are correct and all three legs are present.

Check that the power sources voltage is within 10% of the rated voltage.

Check and confirm that the power and control wire are correctly connected.

Check that the wired controllers are properly connected.

Before powering on, confirm there are no short circuits for each line.

Check that all units have passed a nitrogen pressure test for 24 hours.

Provide the customer accurate as-built drawings and documents, including actual piping lengths and locations, unit addresses, settings, etc.

Ensure additional refrigerant charge calculations are correct and that the system is charged accordingly.

Energize the outdoor units for at least 24 hours before system startup to ensure proper oil temperature has been achieved.

Ensure all refrigerant valves on the outdoor units are fully open; ensure the oil balancing valves are open for 2 and 3-module systems. If these valves are not fully open equipment damage may occur.

MAINTENANCE

The following are recommended guidelines. Job site conditions may dictate that the maintenance schedule be performed more often than recommended here.

EVERY 3 MONTHS: Check the coil condition. Clean the coil if necessary.

EVERY 6 MONTHS: Follow the 3-month maintenance schedule. In addition: Check for and remove debris that may have settled

around the base of the outdoor unit. Check for proper condensate drainage (clear basepan). Eliminate any standing water inside the outdoor unit.

EVERY 12 MONTHS: Follow 6-month maintenance schedule. In addition: Ensure all electrical connections are secure. Check the heating and cooling action to confirm proper

operation.

Mode Heavy Snow Mode Light Snow Mode

S11

CAUTION When servicing or repairing this unit, use only factory- approved service replacement parts. Refer to the rating plate on the unit for complete unit model number, serial number and company address. Any substitution of parts or controls not approved by the factory will be at the owners risk and may result in equipment damage.

CAUTION To avoid equipment damage, do not attempt to reuse any mechanical or electrical controllers that have been wet.

Manualsnet FAQs

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