Carrier Toshiba MCY-MAP0607HS-UL Installation Manual PDF

Installation Manual 1 English

Manuel dinstallation 28 Franais

Manual de instalacin 57 Espaol

AIR CONDITIONER (MULTI TYPE) Installation Manual

For OUTDOOR USE only Pour une UTILISATION EN

EXTRIEUR uniquement Solo para USO EXTERIOR

Outdoor Unit Model name:

Heat Pump Model

MCY-MAP0367HS-UL MCY-MAP0487HS-UL MCY-MAP0607HS-UL

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Installation Manual

EN-1 EN-2

C

T

onditioning equipment can be hazardous due to system pressures, electrical cation (roofs, elevated structures, etc.). and service mechanics should install, start--up, and service this equipment. m basic maintenance functions such as replace the indoor unit air filter. All other by trained service personnel. nt, observe precautions in the literature and on tags, stickers, and labels attached to

afety glasses and work gloves. Keep a quenching cloth and a fire extinguisher nearby dling, rigging, and setting bulky equipment. hly and follow all warnings or cautions included in literature and attached to the unit. nd National Electrical Code (NEC) for special requirements. Recognize safety

alert symbol . When you see this symbol on the unit and in instructions or al for personal injury. Understand these signal words: DANGER, WARNING, and ed with the safety--alert symbol. rious hazards which will result in severe personal injury or death. WARNING signifies rsonal injury or death. CAUTION is used to identify unsafe practices which may result

uct and property damage. NOTE is used to highlight suggestions which will result in , or operation. ume any liability for the damage caused by not observing the description of this

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vicing air--c

1

ontents 1 Precautions for Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 2 Accessory Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3 Installation of R410A Air Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . 3 4 Installation Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 5 Refrigerant Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 6 Electric Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 7 Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 8 Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 9 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

ADOPTION OF NEW REFRIGERANT his Air Conditioner uses R410A an environmentally friendly refrigerant.

Installing, starting up, and ser components, and equipment lo Only trained, qualified installers Untrained personnel can perfor operations should be performed Before working on the equipme the equipment. Follow all safety codes. Wear s during brazing. Use care in han Read these instructions thoroug Consult a local building codes a information. This is the safety-- manuals, be alert to the potenti CAUTION. These words are us DANGER identifies the most se hazards which could result in pe in minor personal injury or prod enhanced installation, reliability The manufacturer shall not ass manual.

Installation Manual

EN

1 service person is allowed to carry out the electrical work of the air conditioner. , repairing the electrical parts or undertaking other electrical jobs, wear gloves to

tricians and from heat, insulating shoes and clothing to provide protection from electric shocks. tive gear may result in electric shocks. s setting, test run, or troubleshooting through the checking window on the electric parts box, put ves, insulated shoes and other clothing to provide protection from electric shock.

specifications in the Installation Manual, NEC and the local codes. roperly grounded. line to a gas pipe, lightning conductor, or a telephone ground line. or relocation work, check that the ground wires are connected properly. t meets the specifications in the installation manual, NEC and local codes. ust the power cable be extended. Connection trouble in the places where the cable is extended d/or a fire. the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity overflow block and may result in fire. its own power supply.

nditioner after having completed the work, check that the indoor unit's electrical parts box cover panel are closed. Set the circuit breaker to the ON position. You may receive an electric shock if out first conducting these checks.

le (such as when a check code display appears, there is a burning smell, abnormal sounds, the air heat or water is leaking) has occurred in the air conditioner, do not touch the air conditioner aker to the OFF position and contact a qualified service person. Take steps to ensure that the (by placing an out of order sign near the circuit breaker, for instance) until a qualified service

to use the air conditioner in the trouble status may cause mechanical problems to escalate or other failure. tallation work, check for refrigerant leaks and check the insulation resistance and water drainage. check that the air conditioner is operating properly. er tallation work, tell the user where the circuit breaker is located. If the user does not know where

r she will not be able to turn it off in the event the unit has a problem. , do not approach the outdoor unit Instead, set the circuit breaker to the OFF position and contact to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are

follow the Owners Manual to explain to the customer how to use and maintain the unit.

service person is allowed to relocate the air conditioner. k is carried out shut down the compressor before disconnecting the refrigerant pipe. nt pipe with the service valve left open and the compressor still operating will cause air or other the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in ble. ant into the outdoor unit. Use a refrigerant recovery machine to recover the refrigerant after possible to recover the refrigerant into the outdoor unit. Refrigerant recovery into the outdoor unit ents such as explosion of the unit, injury or other accidents.

ver all refrigerant before system repair or final unit disposal.

EN-3 EN-4

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2

Refrigerant piping Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is

operated with the valve open and without refrigerant pipe, the compressor draws air and the refrigeration cycle is over pressurized, which may cause a injury.

Tighten the flare nut with a torque wrench in the specified manner. Excessive tightening of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.

When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction.

Nitrogen gas must be used for the airtight test.

Precautions for Safety The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

WARNING

General Carefully read Owners Manual before starting the air conditioner. There are many important things to keep in mind for daily

operation. Ask for installation to be performed by the dealer or a professional. Only a qualified installer is able to install an air

conditioner. If a non-qualified person installs an air conditioner, it may result in problems such as fire, electric shock, injury, water leakage, noise and vibration.

Do not use any refrigerant different from the one specified for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body.

Before opening the service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts.

Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breakers for both the indoor and outdoor units to the OFF position. Otherwise, electric shock may result.

Wear protective gloves and safety work clothing during installation, servicing and removal. Do not touch the outdoor units aluminium fin. You may injure yourself if you do so. If the fin must be touched for some

reason, first put on protective gloves and safety work clothing, and then proceed. Do not climb onto or place objects on top of the outdoor unit. You may fall or the objects may fall off of the outdoor unit and

result in injury. Before cleaning the filter or other parts of the outdoor unit, set the circuit breaker to OFF without fail, and place a Work in

progress sign near the circuit breaker before proceeding with the work. The refrigerant used by this air conditioner is the R410A. The air conditioner must be transported in stable condition. If any part of the product are broken, contact your distributor. We do not take any responsibility on the local design. Selection of installation location Do not install in a location where flammable gas leaks are possible. If the gas should leak and accumulate around the unit, it

may ignite and cause a fire. During transporting the air conditioner, wear shoes with protective toe caps, protective gloves, and other protective clothing. To transport the air conditioner, do not take hold of the bands around the packing carton. You may injure yourself if the bands

should break. Places where the operation sound of the outdoor unit may cause a disturbance. (Especially at the boundary line with a

neighbour, install the air conditioner while considering the noise.) Installation The designated bolts (M10) and nuts (M10) for securing the outdoor unit must be used when installing the unit. Install the outdoor unit property in a location that is durable enough to support the outdoor units weight. Insufficient durability

may cause the outdoor unit to fall, which may result in injury. Install the unit in the prescribed manner for protection against strong wind and earthquake. Incorrect installation may result in

the unit falling down, or other accidents. Put the screws back which have been removed for installation or other purposes.

Electrical wiring Only a certified installer or When connecting the elec

provide protection for elec Failure to wear this protec

When executing an addres on insulated heat-proof glo

Use wiring that meets the Check that the product is p Do not connect the ground After completing the repair Install a circuit breaker tha Under no circumstances m

may give rise to smoke an Do not supply power from

may occur on the terminal Outdoor unit should have Test run Before operating the air co

and outdoor unit's service the power is turned on with

If there is any kind of troub conditioner fails to cool or yourself. Set the circuit bre power will not be turned on person arrives. Continuing result in electric shocks or

Upon completion of the ins Then conduct a test run to

Explanations given to us Upon completion of the ins

the circuit breaker is, he o If the fan grille is damaged

a qualified service person completed.

After the installation work, Relocation Only a certified installer or When the pump-down wor

Disconnecting the refrigera gas to be drawn in, raising rupture, injury or other trou

Do not recover the refriger moving or repairing. It is im may result in serious accid

Disposal Relieve pressure and reco

qualified trical wires

Installation Manual

EN-5 EN-6

R410 Th

2 Own

Inst

Edg

Prot

of R410A Air Conditioner e HFC refrigerant (R410A) which does not deplete the ozone layer. nt or refrigerating oil, the size of the main unit's charge port or installation tools

that of an air conditioner for the former refrigerant. re required for the refrigerant (R410A) as shown in the following table. w and clean piping materials so that water or dust does not enter.

d Cautions on handling nt listed in the following table before starting the installation work.

Use Note

Vacuuming/charging refrigerant and operation check

Gas leak check

Vacuum drying

Flare machining of pipes Usable if dimensions are adjusted.

Bending pipes

Refrigerant recovery

Tightening flare nuts 1/2 (12.7 mm) and 5/8 (15.9 mm)

Cutting pipes

Braze pipes

Charging refrigerant

Opening liquid valve

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3

CAUTION

A Air Conditioner Installation is air conditioner uses the environmentally friendly HFC refrigerant (R410A).

Accessory Parts Part name Qty Shape Usage

ers Manual 1 (Be sure to present it to the customers.)

allation Manual 1 This manual for installer.

e Guard 1 Protects piping against sharp edges

ection busing 1 Protects communication wires

3 Installation This air conditioner adopts th To prevent mixing of refrigera

connecting section differs to Accordingly, exclusive tools a

For connecting pipes, use ne

Required Tools an Prepare the tools and equipme

: R410A exclusive : Generic

Tools/equipment

Manifold gauge*

Charging hose

Gas leak detector

Vacuum pump with backflow prevention function

Flare tool

Bender

Refrigerant recovery equipment

Torque wrench

Pipe cutter

Brazing torch and nitrogen cylinder

Refrigerant charging scales

4 mm hexagon wrench

Installation Manual

EN

4

Turn on the leakage breaker at least 12 hours before starting a test run to protect the compressor.

roperly in a location that is durable enough to support the outdoor unit's weight. ause the outdoor unit to fall, which may result in injury.

ight of about 311 lbs (141 kg). Pay special attention when installing the unit onto a wall

r unit in a location that is subject to combustible gas leaks. le gas around the outdoor unit may cause a fire.

a location that meets the following conditions after the customers consent is

free from obstacles near the air intake and air discharge osed to rain or direct sunlight increase the operating noise or vibration of the outdoor unit produce any drainage problems from discharged water

r unit in the following locations. tmosphere (coastal area) or one that is full of sulfide gas (hot-spring area) (Special

.) vapor, oily smoke, or corrosive gases ic solvent is used

er metal dust is present. If iron or other metal dust adheres to or collects on the interior of y spontaneously combust and start a fire. quency equipment (including inverter equipment, private power generator, medical ication equipment) is used ation may cause malfunction of the air conditioner, abnormal control or problems due to

ent.) utdoor units discharged air blows against the window of a neighboring house door unit's operating noise is transmitted installed in an elevated position, be sure to secure its fixing leg. ater does not negatively impact the area and neighbors. ion.

discharged water completely, use a drain pan.

EN-7 EN-8

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4

CAUTION

Incorrect installation work may result in a malfunction or complaints from customers.

When collectively draining

Installation Conditions Before installation Follow these steps prior to installation.

Airtight test 1 Before starting an airtight test, further tighten the spindle valves on the gas and liquid sides.

2 Pressurize the pipe with nitrogen gas charged from the service port to the design pressure to conduct an airtight test.

3 After the airtight test is complete, evacuate the nitrogen gas.

Air purge To purge air, use a vacuum pump. Do not use refrigerant charged in the outdoor unit to purge air. (The air purge refrigerant is not contained in the

outdoor unit.)

Electrical wiring Be sure to fix the power wires, indoor / outdoor connecting wires and remote control wires with clamps so that they do not come into contact with the cabinet, etc.

Grounding

WARNING

Make sure that proper grounding is provided. Improper grounding may cause an electric shock. For details on how to check grounding, contact the dealer who installed the air conditioner.

Proper grounding can prevent charging of electricity on the outdoor unit surface due to the presence of a high frequency in the frequency converter (inverter) of the outdoor unit, as well as prevent electric shock. If the outdoor unit is not properly grounded you may be exposed to an electric shock.

Be sure to connect the ground wire (grounding work). Incomplete grounding can cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires.

Test run

Installation loc

WARNING

Install the outdoor unit p Insufficient durability may c This outdoor unit has a we surface.

CAUTION

Do not install the outdoo Accumulation of combustib

Install the outdoor unit in obtained. A well-ventilated location A location that is not exp A location that does not A location that does not

Do not install the outdoo A location with a saline a

maintenance is required A location subject to oil, A location in which organ Places where iron or oth

the air conditioner, it ma A location where high-fre

equipment, and commun (Installation in such a loc noise from such equipm

A location in which the o A location where the out When the outdoor unit is A location where drain w Places with poor ventilat

ation

Installation Manual

EN-9 EN-10

1. In 2. W

sto 3. W

or 1)

2)

3)

the operational season of the air conditioner, and install the unit so that the ight angle relative to the wind direction.

area where snowfalls may be heavy, take steps to prevent the unit from being len or accumulated snow. n higher or install a stand (which is high enough to ensure that the unit will be above snow) and place the unit on it. supplied).

Strong wind

Strong wind

Snow shield

Snow shield

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tion during

5

CAUTION

stall the outdoor unit in a location where the discharge air is not blocked. hen an outdoor unit is installed in a location that is always exposed to strong winds like a coast or on the high ries of a building, secure normal fan operation by using a duct or wind shield.

hen installing the outdoor unit in a location that is constantly exposed to strong winds such as on the upper floors rooftop of a building, apply the wind-proofing measures referred to in the following examples. Install the unit so that its discharge port faces the wall of the building. Keep a distance 19.7" (500) or more between the unit and the wall surface.

Leave a clearance of at least 11.8" (300) between the right side panel and wall or other surface of the building for installation and servicing purposes.

Leave a clearance of at least 7.9" (200) between the rear panel and wall or other surface of the building to maintain the air conditioner's performance.

19.7" (500) Unit: in (mm)

11.8" (300)

7.9" (200)

4) Consider the wind direc discharge port is set at a r

When installing the unit in an adversely affected by the fal Either make the foundatio

the fallen or accumulated Attach a snow shield (field

Installation Manual

EN

ar of unit t of the unit.

both the front and rear of the the height of the outdoor unit.

or more units

Serial installation in front and rear Open above and to the right and left of the unit. The height of an obstacle in both the front and rear of the unit should be lower than the height of the outdoor unit.

Standard installation

outdoor unit k the strength and leveling of the base so that abnormal sounds do not emit from the unit. g base diagram, secure the base firmly with the anchor bolts. 10) x 4 pairs)

7. 9"

(2 00

) or

m or

e

39 .4

" (1

00 0)

or

m or

e

39 .4"

(10

00 )

or mo

re

7. 9"

(2 00

) or

m or

e

11.8" (300) or more

39.4" (1000) or more

11.8" (300) or more

59.1" (1500) or more

78.7" (2000) or more

7.9" (200) or more

7.7" (195)7.7" (195) 24.4" (620)

22.6" (574)

2. 8"

(7

0)

15 .9

" ( 40

3)

17 .4

" ( 44

3)

Drain hole Back side

Front side (Air discharge side) Drain hole Drain hole Drain hole

EN-1 EN-12

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6

1

Necessary space for installation (Unit: in (mm))

Obstacle at rear side Upper side is free 1. Single unit installation

2. Obstacles on both right and left sides

3. Serial installation of two or more units The height of the obstacle should be lower than the height of the outdoor unit.

Obstacle also above unit

Obstacle in front Above unit is free 1. Single unit installation

2. Serial installation of two or more units

Obstacle also above unit

7. 9"

(2 00

) or

m or

e

5.9" (150) or more

11.8" (300) or more

7. 9"

(2 00

) or

m or

e

The height of the obstacle should be lower than the height of the outdoor unit.

5.9" (150) or more

7. 9"

(2 00

) or

m or

e

11.8" (300) or more

11.8" (300) or more

11.8" (300) or more

7.9" (200) or more

19 .7

" ( 50

0)

or m

or e

19 .7

" ( 50

0)

or m

or e

39 .4

" (1

00 0)

or

m or

e

39.4" (1000) or more

39 .4

" ( 10

00 )

or m

or e

Obstacles in both fron Open above and to the righ The height of an obstacle in unit, should be lower than

Standard installation 1. Single unit installation

2. Serial installation of two

Installation of Before installation, chec According to the followin

(Anchor bolt, nut: 0.4" (M

11.8" (300) or more

t and re t and lef

Installation Manual

EN-13 EN-14

As *

Set t

Wh is

Ca ev

Fa

If a h is 32 with Attac It is r For d

fi

Tip-o

Piping ipes

ecting pipes can be connected in any of 3 directions. Use a screwdriver to punch out g/wiring panel or base. Wear heavy work gloves to protect yourself from injury while g out the knockout hole in a manner which ensures that the pipes and wires will not be the burrs from around the hole. Use the protective edge guard around the opening.

on parts (field supplied)

Follow the instructions in the installation manual provided with the branch pipe kit and the instructions in the indoor nect the refrigerant pipe between the branch pipe and indoor unit.

Part name Quantity

52 mm) 8 mm) or 3/4" (19.05 mm)

One each

l " (10 mm) thick) 1

One each

Rear

Side

Bottom

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rry out the installation work by following the prescribed procedure to help prevent the unit from shaking in the ent of strong winds, earthquakes, etc. ilure to carry out the installation work as prescribed may lead to the unit tipping over, in turn causing an accident.

For reference eating operation is to be continuously performed for a long time under the condition that the outdoor temperature F (0 C) or lower, draining defrosted water may be difficult due to the bottom plate freezing, resulting in trouble the cabinet or fan. h a snow stand, snow hood, etc. to the outdoor unit for use in snowfall areas. ecommended to procure an anti-freeze heater locally to safely install the air conditioner. etails, contact the dealer.

units installation manual to con

7

shown in the figure below, install vibration-proof rubber pads to directly support the bottom surface of the fixing leg. When installing the foundation for an outdoor unit with downward piping, consider the piping work.

he out margin of the anchor bolt to 0.6" (15 mm) or less .

en the unit is to be installed in a location where it is likely to be exposed to strong winds or where the foundation unstable, additional measures must be taken to prevent tip-over as shown in the figure below.

CAUTION

Fixing leg

Correct Correct

Foundation

Absorb vibration with vibration-proof rubber pads

Foundation

Bottom plate of outdoor unit

Support the bottom surface of the fixing leg that is in contact with and underneath the bottom plate of the outdoor unit.

IncorrectIf only the end of the xing leg is supported,

it may deform.

Do not support the outdoor unit only with the fixing leg.

Foundation

0.6" (15 mm) or less

Tip-over prevention brace ver prevention brace

5 Refrigerant Leading out the p

The indoor/outdoor unit conn the knockout part of the pipin doing this work. After punchin damaged in any way, remove

Optional installati

REQUIREMENT

A Refrigerant piping Liquid side: 3/8" (9. Gas side: 5/8" (15.8

B Pipe insulating materia (polyethylene foam, 0.4

C Putty, PVC tape

Installation Manual

EN

in 1/4" 0.03" 0 to 0.02" 0.04" to 0.06" 0.39" 0.67"

he conventional flare tool, pull the tool out approx. 0.02" (0.5 mm) more than that flare size.

s useful for adjusting the projection margin size.

rant pipes, be sure to use nitrogen gas to prevent oxidation of the inside of the pipes; refrigerating cycle due to oxidized scale may occur.

s for the refrigerant pipes and perform the piping work so that water or dust does not nt.

razing. spanner to loosen or tighten the flare nut. If a single spanner is used, the required level of ained. Tighten the flare nut with the specified torque. t oil to the surface of the flare.

d pipe

nected section

Internal size

Connected section Min. thickness

of coupling External size Internal size Min. depth of

insertion Oval valueStandard outer dia. C F K G

1/4"0.001 0.25" 0.28" 0.24" 0.002" or less 0.02" 6.350.03 6.45 7 6 0.06 or less 0.5 3/8"0.001 0.38" 0.31" 0.28" 0.003" or less 0.02" 9.520.03 9.62 8 7 0.08 or less 0.6 1/2"0.001 0.50" 0.35" 0.31" 0.004" or less 0.03" 12.70.03 12.81 9 8 0.10 or less 0.7

in 5/8" 5/8"0.001 0.63" 0.35" 0.31" 0.005" or less 0.03" 15.880.03 16.00 9 8 0.13 or less 0.8 3/4"0.001 0.76" 0.43" 0.39" 0.006" or less 0.03" 19.050.03 19.19 11 10 0.15 or less 0.8

G

F

+0.002 -0.001 +0.04 -0.02

+0.002 -0.001 +0.04 -0.02 +0.002 -0.001 +0.04 -0.02

+0.002 -0.001 +0.04 -0.02

+0.002 -0.001 +0.04 -0.02

EN-1 EN-16

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8

10.3 to 13.3 14 to 18 1.4 to 1.8 mm 6.35 0.8 0 to 0.5 1.0 to 1.5 9.9 17 in 3/8" 0.03" 0 to 0.02" 0.04" to 0.06" 0.52" 0.87"

24.3 to 31.0 33 to 42 3.3 to 4.2 mm 9.52 0.8 0 to 0.5 1.0 to 1.5 13.2 22 in 1/2" 0.03" 0 to 0.02" 0.04" to 0.06" 0.65" 1.02"

36.1 to 45.0 49 to 61 4.9 to 6.1 mm 12.7 0.8 0 to 0.5 1.0 to 1.5 16.6 26 in 5/8" 0.04" 0 to 0.02" 0.04" to 0.06" 0.78" 1.14"

46.5 to 56.8 63 to 77 6.3 to 7.7 mm 15.88 1.0 0 to 0.5 1.0 to 1.5 19.7 29 in 3/4" 0.05" 0 to 0.02" 0.04" to 0.06" 0.94" 1.42"

73.8 to 88.5 100 to 120 10.0 to 12.0 mm 19.05 1.2 0 to 0.5 1.0 to 1.5 24.0 36

mm 15.88 in 3/4"

mm 19.05

5

Refrigerant piping connection

CAUTION

TAKE NOTE OF THESE 4 IMPORTANT POINTS BELOW FOR PIPING WORK 1. Keep dust and moisture away from inside the connecting pipes. 2. Tightly connect the connection between pipes and the unit. 3. Evacuate the air in the connecting pipes using a VACUUM PUMP. 4. Check for gas leaks at connection points.

Pipe connection method Flaring 1. Cut the pipe with a pipe cutter.

2. Remove the burr inside the pipe. When removing the burr, be careful that the chips do not fall into the pipe.

3. Remove the flare nuts attached to the outdoor / indoor unit, then insert them into each of the pipes. 4. Flare the pipes.

See the following table for the projection margin (A) and flaring size (B).

Pipe A B Flare Nut

Outside diameter Thickness

Rigid (clutch type) R410A tool

Imperial (wing nut type)

R410A tool

Width across flat

Tighten torque

lbfft Nm kgfm

90 Obliquity Roughness Warp

Correct Incorrect Incorrect Incorrect

A B

* In case of flaring for R41 for R22 to adjust it to the The copper pipe gauge i

REQUIREMENT

When brazing the refrige otherwise clogging of the

Use clean and new pipe contaminate the refrigera

* Remove all flux after b Be sure to use a double

tightening cannot be obt Do not apply refrigeran

Coupling size of braze

Con

External size

Standard outer dia. of connected

copper pipe

in 1/4" mm 6.35 in 3/8"

mm 9.52 in 1/2"

mm 12.7

K

C

0A with t specified

Installation Manual

EN-17 EN-18

Sele Mate Cap Fo Th

Th de

Minim

*(1)

Table

Table

I ca

Outd

piping

e Selection of pipe size Remarks

ipe

Size of main pipe

Same as the outdoor units connecting pipe size.

hing

Pipe size between branching sections

Pipe size differs based on the total capacity code value of the indoor units at the downstream side. If the total value exceeds the capacity code of the outdoor unit, apply the capacity code of the outdoor unit. (See Table 1 and 2.)

(5)(2)

(3) (3) (3) (3)

(2) (4)

(3)

(3)

oor unit

pipe

hing Branching pipe

Branching header

Indoor unit

Indoor unit

Branching pipe

Y-shaped branching joint

Outdoor unit capacity type Gas pipe Liquid pipe 0367 type 5/8" 3/8" 0487 type 5/8" 3/8" 0607 type 3/4" 3/8"

Total capacity codes of indoor units at down stream

side Gas pipe Liquid pipe

Equivalent to capacity Below 23 1/2" 3/8"

23 to below 61 5/8" 3/8" 61 or more 3/4" 3/8"

+00_EB99809701_00Ta.book Page 9 Tuesday, December 6, 2016 2:07 PM

igerant

060 type 60 2 to 9 30 81

(2) Branching section Branching section

Branc pipe

9

Selection of pipe materials and size ction of pipe material rial: Phosphorus deoxidation seam-less pipe acity code of indoor and outdoor units r the indoor unit, the capacity code is decided at each capacity rank. e outdoor units capacity codes are decided at each capacity rank. e maximum No. of the connectable indoor unit and the total value of the indoor units capacity codes are also cided.

um wall thickness for R410A application

If the pipe size is 3/4" (19.05), use a suitable material.

1

2

Soft Half Hard or Hard OD (Inch) OD (mm) Minimum wall thickness (mm) OK OK 1/4 6.35 0.80 OK OK 3/8 9.52 0.80 OK OK 1/2 12.70 0.80 OK OK 5/8 15.88 1.00

NG *(1) OK 3/4 19.05 1.00

ndoor unit pacity type

Capacity code Indoor unit

capacity type

Capacity code Equivalent to

capacity Equivalent to

capacity 007 type 7.5 036 type 36 009 type 9.5 042 type 42 012 type 12 048 type 48 015 type 15.4 018 type 18 021 type 21 024 type 24 027 type 27 030 type 30

oor unit capacity type

Capacity code No. of connectable indoor units

Total capacity code of connectable indoor units

Equivalent to capacity Min.*(2) Max. 036 type 36 2 to 6 18 48 048 type 48 2 to 8 24 64

Selection of refr

No. Piping parts Nam

(1) Outdoor unit 1st branching section

Main p

(4) (1)

Outd

LiquidGas pipe

Main pipe 1st branc section

Installation Manual

EN

fference of the refrigerant piping

1st branch to be named A.

Allowable value (ft (m)) Pipes

ion of pipe (liquid pipe, real length) 591 (180) L1 + L2 + L3 + a + b + c + d + e + f

ing length Real length 328 (100) L1 + L3 + f

Equivalent length 410 (125) lent length of main pipe 213 (65) L1 lent length of furthest piping from g Li (*1) 115 (35) L3 + f

ngth of indoor unit connecting pipe 49 (15) a, b, c, d, e, f

een indoor units H1

Upper outdoor unit 164 (50) Lower outdoor unit 131 (40)

Height between indoor units H2 49 (15)

A *1

Outdoor unit

hing

Branching pipe L2 Branching header

Indoor unit

Y-shaped branching joint

g pipe

Equivalent length corresponds to farthest piping L

Equivalent length corresponded to farthest piping after 1st branching Li Height difference between indoor units H2

a b c d

e f

EN-1 EN-20

+00_EB99809701_00Ta.book Page 10 Tuesday, December 6, 2016 2:07 PM

10

*1 Furthest indoor unit from

9

(3) Branching section Indoor unit

Indoor unit connecting pipe

Connecting pipe size of indoor unit

(4) Branching section Y-shaped branching joint

Selection of branching section (Y-shaped branching joint)

(5) Branching section Branching header

Selection of branching section (Branching header)

* A capacity code up to a maximum of 57 is connectable to one line after branching from the header.

Capacity rank Gas pipe Liquid pipe 007 to 012 type 3/8" 1/4" 015 to 018 type 1/2" 1/4" 021 to 048 type 5/8" 3/8"

Model name Y-shape branch joint RBM-BY55UL

Model name

Branching header* For 4 branches RBM-HY1043UL For 8 branches RBM-HY1083UL

Allowable length / he

Piping Length

Total extens

Furthest pip L (*1)

Max. equiva Max. equiva 1st branchin Max. real le

Height Difference

Height betw and outdoor

Height difference between indoor and outdoor units H1

Main pipe L1

1st branc section

Branchin L3

ight di

Installation Manual

EN-21 EN-22

Befo Pres After Ap An Fu

ref (R

Fo Appl

REQ

Do n

To d 1. Ap 2. Ap

To d 3. Ap

Ch No Pre

e changes from the moment pressure is applied to 24 hours after that, the pressure er 1.8 F (1 C). Consider the pressure change when checking the test result.

etected in steps 1-3, check the leakage at the connecting points. ing agent or other measures and seal the leak with re-brazing, flare retightening or ecute an airtight test again.

+00_EB99809701_00Ta.book Page 11 Tuesday, December 6, 2016 2:07 PM

etect a gross leakage ply pressure 44 psi for 3 minutes or more. ply pressure 218 psi for 3 minutes or more.

etect a slow leakage ply pressure 602 psi for approx. 24 hours.

eck pressure down. pressure down: Accepted ssure down: Check the leaked position.

11

Airtight test re starting an airtight test, tighten the spindle valves further on the gas side and liquid side. surize the pipe with nitrogen gas charged from the service port to the design pressure to conduct the airtight test. the airtight test is completed, evacuate the nitrogen gas. ply pressure from the service ports of the packed valves (or ball valves) at the liquid side and gas side. air tight test can be only performed to the service ports at the liquid side and gas side of the outdoor unit. lly close the valves at the liquid side and gas side. There is a possibility that nitrogen gas may enter the rigerant cycle, re-tighten the valve rods before applying pressure. e-tightening of the valve rods are unnecessary for valves at the gas side because they are ball valves.) r each refrigerant line, apply pressure gradually with the following steps at the liquid side and gas side. y pressure to the gas side and liquid side.

UIREMENT

ot use Oxygen, Flammable gas and Noxious gas in an airtight test.

Main pipe

Connected to indoor unit Low pressure gauge

High pressure gauge

Ball valve fully closed (Gas side)

Flare connection

Flare connection

Packed valve fully closed (Liquid side)

Service port

1/4" (6.4 mm) Copper pipe

1/4" (6.4 mm) Copper pipe

Nitrogen gas

Reducing valve

Gauge manifoldOutdoor unit

Service port

NOTE

If the environmental temperatur will change by about 1.45 psi p

REQUIREMENT

When a pressure decrease is d Check the leakage using a foam other methods. After sealing, ex

Installation Manual

EN

the vacuum pump with a refrigerant canister and start the additional charging of

refrigerant charge amount unt does not include the refrigerant for pipes at the local site.

ed in pipes at the local site, calculate the amount and charge it additionally.

t R (kg)

f liquid pipe diameter 1/4" (ft) f liquid pipe diameter 3/8" (ft)

y 0.038 lbs/ft )} 1.2 + ( 1.76 lbs ) 1.8 0.038 lbs )} 1.2 + ( 1.76 lbs )

MAP0367 MAP0487 MAP0607 )) 14.8 (6.7) 14.8 (6.7) 14.8 (6.7)

eal length of liquid pipe

Additional refrigerant charge amount per

1 ft liquid pipe (Table 1)

1.2 + Compensation by

outdoor HP (Table 2)

1/4" 3/8" t / 0.017 0.038

MAP0367 MAP0487 MAP0607 apacity (lbs (kg)) 0 (0) 0.88 (0.4) 1.76 (0.8)

L2 3/8": 32.8 ft L3 3/8": 16.4 ft L4 3/8": 9.8 ft L6 1/4": 13.1 ft L7 1/4": 16.4 ft

L2 L3

L4 L5 L6 L7

DCBA

EN-2 EN-24

+00_EB99809701_00Ta.book Page 12 Tuesday, December 6, 2016 2:07 PM

12

If the vacuuming valve amount is not decreased to below -14.6 psi even after vacuuming for 2 hours or more, continue vacuuming for 1 hour or more. If -14.6 psi or less cannot be obtained by 3 hours or more of vacuuming, detect and repair the leak.

When the vacuuming valve has reached -14.6 psi or less after vacuuming for 2 hours or more, close valves VL and VH on the gauge manifold fully. Stop the vacuum pump, leave it as it is for 1 hour and then check that the vacuum does not change. If it does change, then there may be a leak within the system.

After the above procedure for vacuuming has finished, exchange the vacuum pump with a refrigerant cylinder and advance to the additional charging of refrigerant.

Lx: Real total length o Ly: Real total length o

= {( Lx 0.017 lbs/ft ) + ( L = {( 39.3 0.017 lbs ) + ( 9 = 6.75 lbs

3

Air purge

NOTE

For the air purge at installation time (discharge of air in the connecting pipes), use the Vacuum pump method. For protection of the earths environment, do not discharge the refrigerant gas into the air. Eliminate the remaining air (nitrogen gas, etc.) in the unit with a vacuum pump. If gas remains, performance and reliability of the unit may be reduced.

After the airtight test, discharge the nitrogen gas. Then connect the gauge manifold to the service ports at the gas side and liquid side, and connect the vacuum pump as shown in the following figure. Perform vacuuming for gas side and liquid side. Perform the vacuuming method from both the liquid and gas sides. Use a vacuum pump with the counter-flow preventive function so that oil in the pump does not back up in the air

conditioner pipe when the pump has been stopped. (If oil in the vacuum pump enters into the air conditioner with R410A refrigerant, a problem may occur in the refrigeration cycle.)

Use a vacuum pump that has a high vacuum (below -14.6 psi) and a large exhaust gas amount (over 40 L /minute). Perform vacuuming for 2 or 3 hours (time differs due to pipe length).

In this time, check all valves at the liquid and gas sides are fully closed.

Main pipe

Connected to indoor unit Low pressure gauge

High pressure gauge

Ball valve fully closed (Gas side)

Flare connection

Flare connection

Packed valve fully closed (Liquid side)

Service port

Vacuum pump

Gauge manifoldOutdoor unit

Service port

Adding refrige After vacuuming is complete, refrigerant.

Calculation of additional The default refrigerant amo For refrigerant to be charg

Table 1

Table 2

Example: (060 type)

Additional charge amoun

Outdoor unit type Charging amount (lbs (kg

Additional refrigerant charge

amount at local site = R

Liquid pipe dia. (in) Additional refrigerant amoun 1 ft liquid pipe (lbs/ft)

Outdoor unit type Compensation by outdoor c

L1 3/8": 32.8 ft L5 1/4": 9.8 ft

L1

rant exchange

Installation Manual

EN-25 EN-26

Char Ke If t

sid sid

Th

e unit fully.

r pipe on separately at the liquid and gas sides. lator resistant up to 248 F (120 C) or higher for pipes at the gas side.

nnecting pipes ork has been finished, cover the opening of the piping / wiring panel with the piping the space between the pipes. es downward or sideward, also close the openings of the base plate and the side

a problem may be caused due to the entering of water or dust.

s following the table below.

Gas side

,

Interval 78.7" (2 m)

Closed completely

Opened fully

Using a minus screwdriver, turn it counterclockwise by 90 until it hits the stopper. (Full open)

Valve unit

Flare nut

Charge port

Grooves for

driver

cover

Drawing-out sidewardout

d

Drawing-out sideward

Drawing-out downward

When not using the piping cover

Drawing-out rearward

Drawing-out rearward

+00_EB99809701_00Ta.book Page 13 Tuesday, December 6, 2016 2:07 PM

he valv

Pipe holding bracket Attach the pipe holding bracket

Diameter of pipe in (mm) 3/4" (19.05) or less

Drawing- downwar

13

ging of refrigerant ep the outdoor units valve closed, be sure to charge the liquid refrigerant into the service port at the liquid side. he specified amount of refrigerant cannot be charged, fully open the outdoor units valves at the liquid and gas es, operate the air conditioner in the COOL mode, and then charge the refrigerant into the service port at the gas e. In this time, choke the refrigerant slightly by operating the valve of the canister to charge the liquid refrigerant. e liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradually.

Full opening of t Open the valves of the outdoor

Heat insulation fo Apply the pipes heat insulati Be sure to use a thermal insu

Finishing after co After the piping connection w

cover, or fill silicon or putty in In case of drawing-out the pip

plate. Under the opened condition,

Liquid side Packed valve Using a 4 mm-hexagonal wrench fully open the valve rods.

When using the piping

Installation Manual

EN

6

MCY-MAP0607HS-UL 36.3 60

ng Specifications ng Design

g Summary

central control wiring use 2-core non-polarity wires. o prevent noise trouble. grounding, close (connect) the end of shield wires, and isolate the end of terminal.

Use a 2-core non-polarity wire for remote control. (A, B terminals) ire for wiring of group control. (A, B terminals)

U3 U4

A B 2UBA U1U2U1 A 2UB U1 A B

BABABA

it

Communication wiring between indoor and outdoor units (Shield wire)

Communication wiring between indoor units (Shield wire)

Indoor unit Indoor unit Indoor unit

control Remote control Remote control (Group control)

EN-2 EN-28

+00_EB99809701_00Ta.book Page 14 Tuesday, December 6, 2016 2:07 PM

14

Circuit breaker Disconnect per NEC and local codes.

Use a 2-core non-polarity w

7

Electric Wiring WARNING

The equipment shall be installed in compliance with NEC and local codes. Capacity shortages of the power circuit or an incomplete installation may cause an electric shock or fire.

CAUTION

All field wiring insulation rating must comply with NEC and local codes. Do not connect 208/230 V power to the terminal blocks for control cables (U1, U2, U3, U4); otherwise, the unit may

break down. Be sure that electric wiring does not come into contact with high-temperature parts of piping; otherwise, the cable

coating may melt and cause an accident. After connecting wires to the terminal block, take off the traps and fix the wires with cord clamps. Do not conduct power to indoor units until vacuuming of the refrigerant pipes has finished. For the wiring of power to indoor units and that between the indoor and outdoor units, follow the instructions in the

installation manual of each indoor unit. Prepare an exclusive power supply for the air conditioner.

NOTE

Use copper supply wires. Use UL wires rated 600 V for the system interconnection wires. Use UL wires rated 300 V for remote control wires.

Power supply specifications Standard model

MCA: Maximum Circuit Amps MOCP: Maximum Overcurrent Protection (Amps)

Model Power Supply Nominal Voltage, Phase and frequency

MCA (A)

MOCP (A)

MCY-MAP0367HS-UL

208/230 V -1- 60 Hz

36.3 60 MCY-MAP0487HS-UL 36.3 60

Communicatio Communication Wiri

Communication Wirin

Communication wiring and Use a 2-core shield wires t In this case, for the system

U1 U2

U1 U2 U3 U4

U1 U2

Outdoor un

Central control

Indoor unit

Remote

n Wiri

Installation Manual

EN-29 EN-30

Keep

Table

*1 To

Table

Table

Wirin Type

Size

Wirin Type Size

Wirin Size

Leng

C c

O

control r units (8 units) through a single remote control

wer wires and communication wires g / wiring panel or the base and insert the power wires and communication wires erant piping.

mmunication wires.

BABABABABA

No.2 No.3 No.4 No.7 No.8

Knockout for the refrigerant piping

+00_EB99809701_00Ta.book Page 15 Tuesday, December 6, 2016 2:07 PM

a remote

th Up to 1640 ft (500 m) (L6 + L7) Up 1310 ft (400 m) in case of wireless remote control in group control. Up to 660 ft (200 m) total length of control wiring between indoor units (L6)

15

the rule of the following tables about size and length of communication wiring.

-1 Control wiring between indoor and outdoor units (L1, L2, L3), Central control wiring (L4)

tal of control wiring length for all refrigerant circuits ( L1 + L2 + L3 + L4 )

-2 Control wiring between outdoor units (L5) (Other system)

-3 Remote control wiring (L6, L7)

g 2-core, non-polarity Shield wire

/ Length *1 AWG16: Up to 3280 ft (1000 m) AWG14: Up to 6560 ft (2000 m) (*1)

g 2-core, non-polarity Shield wire

/ Length AWG16 to AWG14 / Up to 330 ft (100 m) (L5)

g 2-core AWG20 to AWG14

U3 U4

U1 U2

U1 U3

U2 U4

U1 U2

A B

U3 U4

U1 U2

U1 U2

A B

U1 U2

A B

U1 U2

A B

U1 U2

A B

U1 U2

A B

U3 U4

U1 U2 U5 U6

U1 U2

A B

U1 U2

A B

U1 U2

A B

U3 U4

U1 U2 U5 U6

L1 L5

L6L6 L7L7

L4

3L2L

entral ontrol

This system Other system

Table-1 Header unit

Follower unit

Table-1 Table-2

Table-3

utdoor unit

Indoor unit

Remote control Remote control Remote control

Group control through Group control of multiple indoo

Connection of po Remove knockouts on the pipin through the holes with the refrig

NOTE

Separate the power wire and co

BA

(A.B)

Indoor unit No.1

Remote control

Installation Manual

EN

16

Power supply wire connection 1. After removing the front panel, remove the electrical control parts cover and the front pipe cover.

2. Remove the wire cover from the front pipe cover. 3. Install the conduit connector to the front pipe cover and insert the power supply wires and the communication wires.

Electrical control parts cover

Front pipe cover Front panel

Wire cover

Front pipe cover

Conduit connector

Power supply wires

Communication wires

Protection busing

4. Connect the power supply wires and the communication wires to each terminal blocks.

Use the ring terminals on the field power wires if required by NEC and local codes.

Screw size and tightening torque

Screw size Tightening torque lbfft (Nm)

Power supply terminal M6 1.8 to 2.2 (2.5 to 3.0) Ground screw M6 1.8 to 2.2 (2.5 to 3.0)

Interface PC board

Terminal block (Communication)

Communication wires

Ground screw (Communication)

Terminal block (Power supply)

Ground screw (Power supply)

Power supply wires

EN-31 EN-32

+01_EN02BODY.fm Page 16 Tuesday, December 6, 2016 2:15 PM

Installation Manual

EN-33 EN-34

Com Conn secu

Scre

Communication wire terminal M4 0.9 to 1.0 (1.2 to 1.4)

CN02

[U1,

tting et the addresses of the indoor units before starting the air conditioner.

he steps below.

tric wiring before setting the addresses. t before turning on the indoor units, the CODE No. [E19] is indicated on the 7-segment board of the outdoor unit until the indoor units are turned on. This is not a malfunction. (normally about five minutes) to address one refrigerant line automatically. re required for automatic addressing. (Address setting is not started simply by turning

ed for address setting. anually.

setting addresses using SW15 on the interface P.C. board on the outdoor unit setting addresses on the wired remote control. * When setting an address manually, the wired remote control must temporarily be paired

with an indoor unit one-to-one. (when the system is organized for group operation and no remote control)

electrical control box ll adjustments for de through the access

control box cover. setting the access ecured using the

Access cover Electrical control box cover Access cover screw

+00_EB99809701_00Ta.book Page 17 Tuesday, December 6, 2016 2:07 PM

17

munication wire connection ect the communication wires to the communication wire terminals from under the electrical control box, and re them with the communication cable clamps.

w size and tightening torque

Screw size Tightening torque lbfft (Nm)

U1 U2 U3 U4

U1 U2 U3 U4 CN10

U2] and [U3, U4] not connected

Communication terminal board

TO INDOOR UNIT

TO CENTRAL CONTROLLER

U1 U2 U3 U4

CN02

CN10

U1 U2 U3 U4

Communication terminal board

TO INDOOR UNIT

TO CENTRAL CONTROLLER

[U1, U2] and [U3, U4] connected

U3, U4: Central control device

U1, U2: Communication wiring between Indoor / Outdoor unit

7 Address Se On this unit, it is required to s Set the addresses following t

CAUTION

Be sure to complete the elec If you turn on the outdoor uni

display on the interface P.C. It may take up to ten minutes Settings on the outdoor unit a

on the power.) Running the unit is not requir The addresses can be set m

Automatic addressing: Manual addressing:

WARNING

Electrical shock hazard - the contains high voltage parts. A address setting should be ma cover. Do not remove the electrical

After completing the address cover should be closed and s screw provided.

Installation Manual

EN

D600 D601 D602 D603 D604

nt lines are controlled as a group, be sure to turn on all the indoor units in the group before

ses of each line separately, each lines header indoor unit is set separately. In that case, oor header unit overlap) is indicated as running starts. Change the group address to make using the wired remote control.

Controlling 2 or more refrigerant lines as a group

Outdoor

Indoor

Remote control

Indoor Indoor Indoor

Outdoor

(Group control)

EN-3 EN-36

+00_EB99809701_00Ta.book Page 18 Tuesday, December 6, 2016 2:07 PM

18

SW01 SW02 SW03

5

Automatic address setting No central control (single refrigerant line): go to Address setting procedure 1 Central control of 2 or more refrigerant lines: go to Address setting procedure 2

Address setting procedure 1 1 Turn on the indoor units first, and then turn on the outdoor units.

2 About one minute after turning the power on, confirm that the 7-segment display on the interface P.C. board of the outdoor unit indicates .

3 Press SW 15 to start the automatic address setting. It may take up to 10 minutes (normally about 5 minutes) to complete one lines setting.

4 The 7-segment display indicates . After the indication, starts flashing on the display. When the flashing stops and remains lit on the display, the setting is complete.

Interface P.C. board on the outdoor unit

(Example) When controlling a single refrigerant line centrally

When controlling 2 or more refrigerant lines centrally

Address setting procedure To procedure 1 To procedure 2

System wiring diagram

Outdoor OutdoorCentral control

Central control

Indoor Indoor Indoor Indoor

Remote control

Remote control

Remote control

Outdoor

Indoor

Remote control

Outdoor Central control

Indoor Indoor Indoor

Remote control

Remote control

U. 1. L08 (U. 1. flash)

Auto 1 Auto 2 Auto 3 U. 1. - - - (U. 1. flash)

U. 1. - - - (U. 1. light)

3

2, 4

SW04 SW05 SW15

REQUIREMENT

When 2 or more refrigera setting the addresses.

If you set the unit addres the CODE No. L03 (Ind one unit the header unit

(Example)

System wiring diagram

Installation Manual

Add 1

NOT

Be su custo

Inter

1

1

ress on the interface P.C. board on the outdoor unit

s setting (Do not change their positions.)

SW13 SW14 2 3 4 1 2 3 4

EN-37 EN-38

+00_EB99809701_00Ta.book Page 19 Tuesday, December 6, 2016 2:07 PM

19

ress setting procedure 2 Set a system address for each system using SW 13 and 14 on the interface P.C. board on the outdoor unit of each system. (Factory default: Address 1)

E

re to set a unique address on each system. Do not use a same address as another system (refrigerant line) or a m side.

face P.C. board on the outdoor unit

SW06 SW07 SW09 SW10

SW11 SW12 SW13 SW14

2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

2 3 4 1 2 3 4 1 2 3 4 1 2 3 4

Switch settings for a line (sys ( : switch ON, : switch OFF)

: not used for system addres

Line (system) address 1

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

tem) add

Installation Manual

EN

EN-3 EN-40

When the flashing stops and remains lit on the display, the setting isU. 1. - - - (U. 1. light)

nnectors CN10 to CN02, which are mounted on the interface P.C. boards of all nnected to the central control.

form this task, address that the setting of the refrigerant line have all been completed.

ol address. central control address, refer to the installation manuals of the central control devices.)

Header unit interface P.C. board

SW09SW07

SW11

SW06 SW10

SW12 SW13

SW16

SW14

SW17

D600 D601 D602 D603 D604

SW04 SW05 SW15

SW01 SW02 SW03

SW30SW30

U1 U2 U3 U4

CN02

CN10

U1 U2 U3 U4

TO INDOOR UNIT

TO CENTRAL CONTROLLER

[U1, U2] and [U3, U4] connected

Communication terminal board

+00_EB99809701_00Ta.book Page 20 Tuesday, December 6, 2016 2:07 PM

20

9

complete.

7 Repeat steps 4 to 6 for other refrigerant lines.

8 After completing the address setting of all systems, turn off dip switch 2 of SW30 on the interface P.C. boards of all the outdoor units connected to the same central control, except the unit that has the lowest address. (For unifying the termination of the wiring for the central control of indoor and outdoor units)

10 Set the central contr (For the setting of the

2 In all the outdoor units connected to the central control, make sure the relay connector of the interface P.C. board CN10 has not been connected to the CN02.

NOTE

If you connect a relay connector CN10 to CN02, the communication line [U1, U2] will be connected to [U3, U4]. If [U1, U2] is connected to the [U3, U4], refrigerant line address cannot be set correctly. )

3 Turn on the indoor units first, and then turn on the outdoor units.

4 About 1 minute after turning the power on, confirm that the 7-segment display on the interface P.C. board of the outdoor unit indicates .

5 Press SW 15 to start the automatic address setting. (It may take up to 10 minutes (normally about 5 minutes) to complete one lines setting.)

6 The 7-segment display indicates . After the indication, starts flashing on the display.

U1 U2 U3 U4

CN02

CN10

U1 U2 U3 U4

TO INDOOR UNIT

TO CENTRAL CONTROLLER

[U1, U2] and [U3, U4] not connected

Communication terminal board

U. 1. L08 (U. 1. flash)

Auto 1 Auto 2 Auto 3 U. 1. - - - (U. 1. flash)

9 Connect the relay co the outdoor units co

NOTE

Ensure that before you per

Installation Manual

Swit Outd

Rela Neve all th

O inte

SW1 (Line Dip s (Term outd line a line)

Rela

Line Indo Grou

Indo (aut

using a remote control if the indoor unit wiring is completed and the outdoor unit wiring has not been started. mote control should not be connected. One individual remote control should be used idual indoor unit (one unit at a time), by wiring the remote control directly to the indoor

dure is completed for the individual indoor units, the group remote control should be wing figure.

tween the (U1, U2) and (U3, U4) terminals before completing all the refrigerant line is closed, the address cannot be set correctly.

erant lines

1 1 1 2 2

1 2 3 1 2

1 eader unit

2 Follower unit

2 Follower unit

2 Follower unit

2 Follower unit

Outdoor unit

Outdoor unit

Indoor unit 1 Indoor unit 2 Indoor unit 3 Indoor unit 1

igerant line 1 Refrigerant line 2

Indoor unit 2

EN-41 EN-42

+00_EB99809701_00Ta.book Page 21 Tuesday, December 6, 2016 2:07 PM

CAUTION

y connector connection r connect relay connectors between the [U1, U2] and [U3, U4] terminals before completing the address setting of e refrigerant lines. Otherwise, the addresses cannot be set correctly.

p address 0 0 1 2 0

21

ch setting (setting example when controlling 2 or more refrigerant lines centrally) oor units (setting manually)

*The items in bold font must be set manually.

utdoor units rface P.C. board Outdoor unit Outdoor unit Outdoor unit Factory default

3, 14 (system) address) 1 2 3 1

witch 2 of SW30 inator of indoor /

oor communication nd central control

ON Set to OFF after setting addresses.

Set to OFF after setting addresses.

ON

y connector Connect after setting addresses.

Connect after setting addresses.

Connect after setting addresses. Open

(system) address 1 1 2 2 3 or unit address 1 2 1 2 1

2U1U

BA

2U1U2U1U

BABAA

2U1U2U1U

BAB

U4U3

U2U1 CN02

CN10

U4U3

U2U1 CN02

CN10

U4U3

U2U1 CN02

CN10

Central control

Remote control

Remote control

Remote control

Remote control

GroupIndividual

or units omatic setting)

Outdoor unit [U1, U2] and [U3, U4] connected

Outdoor unit [U1, U2] and [U3, U4] connected

Outdoor unit [U1, U2] and [U3, U4] connected

Manual address s This procedure should be used For this procedure, the group re to set the address on each indiv unit that is to be addressed. When the address setting proce connected as shown in the follo

CAUTION

Connector Do not close the connectors be address settings. If a connector

Wiring example for 2 refrig

Line (system) address

Indoor unit address

Group address H

Remote control

Refr

etting

Installation Manual

EN

EN-4 EN-44

ntrol to nd position

it ndoor unit address if own. door units that have

. These steps must be re operating.

rn it ON .

he UNIT LOUVER

be indicated on the control . The numbers disappear The numbers indicate the the unit address for the on.

nits are connected to a dress for the next ears each time the left end button is pushed.

How to determine an indoor unit position if the unit address is known. This instruction works for group controlled units only. These steps must be performed while the units are not operating.

1 If the unit is ON turn it OFF .

2 Simultaneously push and hold the VENT and TEST buttons for more than 4 seconds.

3 ALL appears on the control LCD display. The fans and louvers of all the indoor units in the control group will be activated.

4 Push the left end of the UNIT LOUVER button.

5 Each time the left side of the button is pushed, the next consecutive indoor unit address (in the group) will be displayed. While the address is displayed, the fan and louvers for that indoor unit will operate. For all other units in the group the fan and louvers will stop.

6 Push the TEST button to finish the procedure. All the indoor units in the control group will stop.

2,4

ON / OFF

CODE No.

F

1 3

UNIT LOUVER

UNIT LOUVER

ON / OFFTEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

CODE No.

UNIT No. SETTINGDATASET

R.C. No.

6 2

3

1

4,5

UNIT LOUVER

+00_EB99809701_00Ta.book Page 22 Tuesday, December 6, 2016 2:07 PM

ote co dress a

22

3

8 Push the TEMP. / buttons repeatedly to set the CODE No. to .

9 Push the TIME / buttons repeatedly to set a group address. If the indoor unit is individual, set the address to ; header unit, ; follower unit, .

wiring for the central control of indoor and outdoor units.)

Connect the relay connectors between the [U1, U2] and [U3, U4] terminals on the header outdoor unit of each refrigerate line.

After finishing all the settings above, set the address of the central control devices. For the setting of the central control address, refer to the installation manuals of the central control devices.Individual : 0000

Header unit : 0001 In case of group controlFollower unit : 0002 }

Turn on the power.

1 Push and hold the , , and buttons at the same time for more than 4 seconds. The LCD display will start flashing.

To set-line (system) address

2 Push the TEMP. / buttons repeatedly to set the CODE No. to .

3 Push the TIME / buttons repeatedly to set a system address. (Match the address with the address on the interface P.C. board of the header outdoor unit in the same refrigerant line.)

4 Push button. (This saves the setting.)

To set-indoor unit address

5 Push the TEMP. / buttons repeatedly to set the CODE No. to .

6 Push the TIME / buttons repeatedly to set an indoor unit address.

7 Push the button. (This saves the setting.)

To set-group address

10Push the button. (This saves the setting.)

11Push the button. The address setting is complete. ( flashes. The unit can be controlled after

has disappeared.)

NOTE

1. Do not use address numbers 29 or 30 when setting system addresses using the remote control. These 2 address numbers cannot be used on the outdoor units and the CODE No. [E04] (Indoor/ outdoor communication trouble) will appear if they are mistakenly used.

2. If addresses to the indoor units are set in 2 or more refrigerate lines manually by using the remote control and will control them centrally, set the header outdoor unit of each line as below. Set a system address for the header outdoor unit of

each line with SW13 and 14 of their interface P.C. boards.

Turn off dip switch 2 of SW30 on the interface P.C. boards of all the header outdoor units connected to the same central control, except the unit that has the lowest address. (To unify the termination of the

ON / OFFTEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

CODE No.

UNIT No. SETTINGDATASET

R.C. No.

11 4, 7, 10

2, 5, 8 3, 6, 9

1

SET DATA CODE No.

Using the rem review the ad of an indoor un

How to determine an i the unit position is kn This instruction works for in individual, or group control performed while the units a

1 If the unit is OFF tu

2 Push the left end of t button.

3 The unit number will LCD as shown above after a few seconds. system address and indoor unit in questi

4 If 2 or more indoor u group control, the ad consecutive unit app of the UNIT LOUVER

TEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

UNIT No.

No.

Installation Manual

Ho th re co

This Use posit

1 2 3

4

5 Each time the left end of the UNIT LOUVER

6

7

7 1

4

UVER the revised addresses.

en changed correctly, on to finish the

address for 2 or more terconnected for riginal addresses were single wired remote

rmed while the units

hold the TIME than 4 seconds. LINE

appear on the LCD.

UNIT LOUVER IX repeatedly to

n and the address of n the selected played on the LCD in

e fan and louvers of the addressed unit will operate.

4 Push the TIME / buttons repeatedly to change the value of the indoor unit address in SET DATA. Change the value in SET DATA to that of a new address.

5 Push the SET button to confirm the new address in SET DATA.

6 Push the left end of the UNIT LOUVER button repeatedly to an address to change. Each push of the button indicates another indoor unit address in the selected refrigerant line. When an indoor unit address is selected for change, the fan and louvers of that unit will operate. Repeat steps 4, 5 and 6 to change an indoor unit address. Each address must be unique.

7 Push the SET button to save the changed addresses.

8 Push the TEST button to finish the procedure.

UNIT LOUVER

ON / OFF

CODE No.

.

2 the line selection

UNIT LOUVER

SWING/FIX

ON / OFFTEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

CODE No.

UNIT No. SETTINGDATASET

R.C. No.

6

4 8

5, 7 Press to finish setting.

Finish

UNIT LOUVER

EN-45 EN-46

+00_EB99809701_00Ta.book Page 23 Tuesday, December 6, 2016 2:07 PM

button is pushed the indoor unit numbers of the selected refrigerant line are displayed consecutively. The fan and louvers of the selected unit will be energized.

Push the CL button to return to step 3 and select another refrigerant line and follow steps 3 to 5 to check indoor unit addresses for that line.

Push the TEST button to finish the procedure.

change the value indicated in the SET DATA section.

5 Push the SET button, to save the address.

6 Push left and of the UNIT LOUVER button repeatedly to select another indoor units address to change. Repeat steps 4 through 6 to continue changing the indoor unit address and make each of them unique.

UNIT LOUVER

UNIT LOUVER

23

w to use a single remote control to check all e indoor unit address when 2 or more frigerant lines are connected to a central ntrol. must be done while the units are not operating. this method to check the indoor unit address and ion for each indoor unit on a single refrigerant line.

Simultaneously push and hold the TIME and TEST buttons for more than 4 seconds.

The LCD will display LINE and CODE No. .

Push the left end of the UNIT LOUVER button and the SWING/FIX repeatedly to select a system address.

Push the SET button to confirm the address selection. The address of an indoor unit that is connected to the selected refrigerant line will be displayed on the LCD. The fan and louvers for that unit will be energized.

How to change an indoor unit address by using a wired remote control

Use this method to change the address of the indoor units (one to one or group control) that have had the original address set automatically. These steps must be performed while the units are not operating.

1 Simultaneously push and hold the SET , CL , and TEST buttons for more than 4 seconds. If there are 2 or more units in a group, the first UNIT No. indicated is the header unit.

2 Push the left end of the UNIT LOUVER button repeatedly to select an indoor unit address to change. If 2 or more units are controlled in a group the fan and louvers of the selected unit will be energized.

3 Push the TEMP. / buttons repeatedly to select for CODE No..

4 Push the TIME / buttons repeatedly to

ON / OFFTEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

CODE No.

UNIT No. SETTINGDATASET

R.C. No. 2

6 5 3

UNIT LOUVER

SWING/FIX

3 5 8 1

4

2, 6, 7

ON / OFFTEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

CODE No.

UNIT No. SETTINGDATASET

R.C. No.

Finish

UNIT LOUVER

7 Push the left end of the button to review/confirm

8 If the addresses have be push the TEST butt procedure.

How to change indoor unit refrigerant lines (that are in central control), when the o set automatically, by using control. These steps must be perfo are not operating.

1 Simultaneously push and and TEST for more

and CODE No.

2 Push the left end of the button and the SWING/F select a system address.

3 Push the SET butto one of the indoor units o refrigerant line will be dis the SET DATA field. Th

TEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

UNIT No. SETTINGDATASET

R.C. No

3 1

Cancels

UNIT LO

Installation Manual

EN

EN-4 EN-48

2 2 2 Central control address

rn on the case heater of the

when it is activated, leave the 12 hours.

t run d by using a remote

lly to check the running emote control. Follow the owners manual when

l is used for operations, follow llation manual supplied with

ly under the condition that the rns the unit off due to the the procedure below. atically stops after 60 minutes ble running and return to

except for a test run as it

button for more than 4 ars on the LCD and the unit e.

2 Push the button.

3 Push the button to switch the running mode to COOL or HEAT.

NOTE

Do not run the unit in any mode other than COOL or HEAT.

The temperature setting cannot be changed during the test run.

Trouble is are detected as usual.

4 Push the button to stop running after finishing the test run. The indication on the LCD display returns to the status of procedure 1.

5 Push the button to exit the test mode. (TEST disappears on the LCD display and the status changes to normal stopped mode.)

3 2, 4 ON / OFF

TEST

TEST

+00_EB99809701_00Ta.book Page 24 Tuesday, December 6, 2016 2:07 PM

24

7

2 Confirm that the 7-segment display indicates A.d. c.L. and set SW01, SW02 and SW03 to 1, 1, 1 respectively.

3 After a time U.1.L08 appears on the 7-segment display if the address clearing has been completed successfully.

4 Set the addresses again after finishing the clearance.

and turn SW04 ON for more than five seconds.

1 Push and hold the seconds. TEST appe enters the TEST mod

1, 5

Resetting to factory default address Method 1 Follow steps 1 through 11 by using a direct wired remote control (page 22) to reset the line (system) address, indoor unit addresses and group addresses to 0099.

Method 2 Clearing all the indoor unit addresses on a single refrigerant line and reset all addresses to the factory default settings follow the steps below:

A. On the header outdoor unit, open the connector between (U1, U2) and (U3, U4) terminals. B. On the header outdoor, interface PC board, SW30 dip switch 2, set to ON.

1 Turn on the indoor and outdoor units of the refrigerant line for the addresses to be initialized. About one minute after turning on the power, confirm that the 7-segment display on the header outdoor unit indicates U.1. - - - and operate the interface P.C. board on the header outdoor unit of the refrigerant line as follows:

SW01 SW02 SW03 SW04 Clearable addresses

2 1 2 Confirm that the 7-segment display indicates A.d.buS and turn SW04 ON for more than five seconds. System/indoor unit/group address

Confirm that the 7-segment display indicates A.d.nEt

U3 U4

U1 U2

U1 U2

A B

U1 U2

A B

U3 U4

U1 U2

U1 U2

A B

U1 U2

A B

U3 U4

U1 U2

U1 U3

U2 U4

U1 U2

A B

Header unit

Remote control

Remote control

Remote control

Remote control

Indoor units to have their addresses initialized

Header unit

Header unit

Central control

8 Test Run CAUTION

Turn on the power and tu compressor. To save the compressor power on for more than

Methods of tes A test run is execute control

Operate the system norma condition using the wired r instructions in the supplied operating the unit. If a wireless remote contro the instructions in the insta the indoor unit. To execute a test run forcib thermostat automatically tu indoor temperature, follow The forcible test run autom to prevent continuous forci normal running.

CAUTION

Do not use forcible running overloads the unit.

TEMP.

TIME

SET CL FILTER RESET TEST

TIMER SET

Installation Manual

Whe inte

A tes interf Indiv and conn

St

1

2

SW

1 to

1 to

1 to

1 to

n the interface P.C. oor unit as below. SW01=[2], SW02=[5],

W01=[2], SW02=[6],

more than 2 seconds.

ot be changed during the

st run for 3 minutes after ing running.

Stop operation

1 Set the rotary switches on the interface P.C. board of the header unit back: SW01 to [1], SW02 to [1] and SW03 to [1].

[B]

[ ] [ ]

splay

[B] [ - C ] [ - H ]

play

[A] [U1]

[B] [ ]

7-segment display

SW09SW07

SW11

SW06 SW10

SW12 SW13

SW16

SW14

SW17

D600 D601 D602 D603 D604

SW04 SW05 SW15

SW01 SW02 SW03

SW30

SW04

SW01 SW02 SW03

D600 D601 D602 D603 D604

SW05 SW15 Push switch

7-segment display [A]

Push switch

7-segment display [B]

Rotary switches

Interface PC board

EN-49 EN-50

+00_EB99809701_00Ta.book Page 25 Tuesday, December 6, 2016 2:07 PM

[B] [ ]

[A] [ ]

7-segment display

Address display of the corresponding indoor unit

25

n a test run is executed by using the rface P.C. board on the outdoor unit

t run can be executed by operating switches on the ace P.C. board of the header outdoor unit. idual test, which tests each indoor unit separately, collective test, which tests all the indoor units ected, are available.

ividual test operation> arting operation

Set the running mode to COOL or HEAT on the remote control of the indoor unit to be tested. (The unit runs in the current mode unless the mode is set otherwise.)

Set the rotary switches on the interface P.C. board of the header outdoor unit: SW01 to [16], SW02 and SW03 to the address of the indoor unit to be tested.

3 Push and hold SW04 for more than 10 seconds.

NOTE

The running mode follows the mode setting on the remote control of the target indoor unit.

The temperature setting cannot be changed during the test run.

Trouble is detected as usual. The unit does not perform a test run for 3 minutes after

energized or terminating the operation.

Finishing operation

1 Set the rotary switches on the interface P.C. board of the header unit back: SW01 to [1], SW02 to [1] and SW03 to [1].

02 SW03 Indoor unit address

16 1 1 to 16 Set number of SW02

16 2 17 to 32 Set number of SW02 + 16

16 3 33 to 48 Set number of SW02 + 32

16 4 49 to 64 Set number of SW02 + 48

[A]

[U1]

[B]

[ ]

7-segment display

[B] [ ]

[A] [ ]

7-segment display

Address display of the corresponding indoor unit

[FF] is displayed for 5 seconds.

[A] [U1]

[B] [ ]

7-segment display

Collective test operation Start operation

1 Set the rotary switches o board of the header outd When in COOL mode: SW03=[1]. When in HEAT mode: S SW03=[1].

2 Push and hold SW04 for

NOTE

The temperature setting cann test run.

Trouble is detected as usual. The unit does not perform a te

turning the power on or stopp

[A] [C ] [H ]

7-segment di

[A] [C ] [H ]

7-segment dis

Installation Manual

EN

EN-5 EN-52

9 Compressor trouble (Lock) Current detective circuit system trouble Low-pressure protective operation Outdoor system address duplicated

units with priority Duplication of indoor units with priority Indoor group / Address unset Outdoor capacity unset

rmation *1 IPDU quantity trouble nit address External interlock of indoor unit

Discharge temp TD trouble High-pressure switch trouble

Phase missing detection umber) Fan motor Vdc trouble

Compressor Vdc trouble Heat sink overheat trouble

nit address Indoor overflow trouble Outdoor liquid back detection trouble

02: TD condition Gas leak detection 4-way valve operation trouble High-pressure protective operation

ice short tive circuit trouble ensor trouble trouble *4: Motor current trouble tep out trouble rature trouble (No TH sensor) free trouble (No TH sensor) ber)

Outdoor fan IPDU trouble

G-TR short protection trouble Compressor position detective circuit system trouble

on

03: Compressor and Fan 1 and Fan 2 06: Fan 1 and Fan 2

07: Compressor, Fan 1 and Fan 2 09: Compressor r, Fan 1 0C: Fan 2 : Fan 1, Fan 2 2

e Check code nameay on the outdoor unit

Auxiliary code

+00_EB99809701_00Ta.book Page 26 Tuesday, December 6, 2016 2:07 PM

Check cod ment displ

26

1

F07 TL sensor trouble F08 TO sensor trouble F12 TS sensor trouble F13 TH sensor (Board installed) trouble F15 Outdoor temp. sensor miswiring (TE, TL) F16 Outdoor pressure sensor miswiring (Pd, Ps) F23 Ps sensor trouble F24 Pd sensor trouble F31 Outdoor EEPROM trouble H01 Compressor breakdown

0A: Fan 1 0B: Compresso 0D: Compressor, Fan 2 0E 0F: Compressor, Fan 1, Fan

Troubleshooting In addition to the CODE No. on the remote control of an indoor unit, you can diagnose trouble of an outdoor unit by checking the 7-segment display on the interface P.C. board. Use the function for various checks. Set every dip switch to OFF after checking.

7-Segment display and check code

* If a check code has an auxiliary code, the display indicates the check code for three seconds and the auxiliary code for one second alternately.

Check code (indicated on the 7-segment display on the outdoor unit) Indicated when SW01 = [1], SW02 = [1], and SW03 = [1].

Rotary switch setting value

Indication LED SW01 SW02 SW03

1 1 1 Outdoor unit check code A Outdoor unit number

(U1) B Check code display*

Check code Check code nameIndication on 7-segment display on the outdoor unit

Auxiliary code E06 Number of indoor units which received normally Decrease of number of indoor units E07 Indoor / Outdoor communication circuit trouble E08 Duplicated indoor addresses Duplication of indoor addresses E15 No indoor unit during automatic addressing E16 00: Capacity over 01 or more: No. of connected units Number of connected capacity over / indoor units

E20 01: Other line outdoor connected 02: Other line indoor connected Other line connected during automatic addressing

E31 IPDU quantity information*1 IPDU communication trouble F04 TD sensor trouble F06 TE sensor trouble

A B

D600 D601 D602 D603 D604

H02 H03 H06 L04 L06 Number of indoor L08 L10 L29 IPDU quantity info L30 Detected indoor u P03 P04

P05 00 *E (*: Fan motor n

P07 P10 Detected indoor u P13 P15 01: TS condition P19 P20

P22

*0: Elemental dev *1: Position detec *2: Input current s *3: Fan motor lock *5: Synchronize, s *C: Sensor tempe *D: Sensor short, (*: Fan motor num

P26 P29

*1 IPDU number informati

01: Compressor 02: Fan 1 04: Fan 2 05: Compressor

Indication on 7-seg

Installation Manual

EN-53 EN-54

Con The insta refrig a set The r cond of am which more conc leaka incre howe is on of flo curta Most to rep conv the m room so th conc of an can o In a r creat mech detec Use amou

Con Com stand NOT If the refrig as charged in each independent device .

For t Th roo Th roo

M

e.g cha (22

+00_EB99809701_00Ta.book Page 27 Tuesday, December 6, 2016 2:07 PM

he amount of charge in this example: e possible amount of leaked refrigerant gas in ms A, B and C is 22 lbs (10 kg). e possible amount of leaked refrigerant gas in ms D, E and F is 33 lbs (15 kg).

., rged amount lbs (10 kg))

Outdoor unit e.g., charged amount (33 lbs (15 kg))

Indoor unit

Room A Room B Room C Room D Room E Room F

27

Warnings on refrigerant leakage centration Limit Check

room in which the air conditioner is to be lled requires a design that in the event of a erant gas leak, its concentration will not exceed

limit. efrigerant R410A which is used in the air itioner is safe, without the toxicity or combustibility monia, and is not restricted by laws to be imposed protect the ozone layer. However, since it contains

than air, it poses the risk of suffocation if its entration should rise excessively. Suffocation from ge of R410A is almost non-existent. With the recent ase in the number of high concentration buildings, ver, the installation of multi air conditioner systems the increase because of the need for effective use or space, individual control, energy conservation by iling heat and carrying power etc. importantly, the multi air conditioner system is able lenish a large amount of refrigerant compared with

entional individual air conditioners. If a single unit of ulti conditioner system is to be installed in a small , select a suitable model and installation procedure at if the refrigerant accidentally leaks out, its entration does not reach the limit (and in the event emergency, measures can be made before injury ccur). oom where the concentration may exceed the limit, e an opening with adjacent rooms, or install anical ventilation combined with a gas leak tion device.

the following calculation to determine the correct nt.

centration limit pliance to the local applicable regulations and ards for the concentration limit is required. E 1 : re are 2 or more refrigerating systems in a single erating device, the amounts of refrigerant should be

NOTE 2 : The standards for minimum room volume are as follows. (1) No partition (shaded portion)

(2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas (opening without a door, or an opening 0.15% or larger than the respective floor spaces at the top or bottom of the door).

(3) If an indoor unit is installed in each partitioned room and the refrigerant piping is interconnected, the smallest room becomes the object. However when a mechanical ventilation is installed interlocked with a gas leakage detector in the smallest room where the density limit is exceeded, the volume of the next smallest room becomes the object.

Total amount of refrigerant (lbs (kg)) in. volume of the indoor unit installed room (ft3 (m3))

Concentration limit (lbs/ft3 (kg/m3))

Important

Outdoor unit Refrigerant piping

Indoor unit

Refrigerant piping

Outdoor unit

Indoor unit

Mechanical ventil