Mitsumi electronic PUHY-P-TGMU-A User Manual

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Page 1

Air-Conditioners For Building Application OUTDOOR UNIT

PUHY-P-TGMU-A

For use with R410A

INSTALLATION MANUAL

For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.

MANUEL D’INSTALLATION

Veuillez lire le manuel d’installation en entier avant d’installer ce climatiseur pour éviter tout accident et vous assurer d’une utilisation correcte.

Page 2

AAFA

[Fig. 5.0.1]

(1)

(Unit : mm [in])

<A>

<A> : Top view

: Side view

<C> : When there is little space up to an obstruction

A : Front

B : No restrictions on wall height (left and right) C : Air outlet guide (Procured at the site)

(5)

250

[9-27/32]

1000 [39-3/8]

(3)

(4)

> =

300 [11-13/16]

45°

<A>

1000 [39-3/8]

250 [9-27/32]**

250

[9-27/32]

900

[35-7/16]

250

[9-27/32]

250

[9-27/32]

900 [35-7/16]

> =

(2)

1000

[39-3/8]

AAAAA

L1*

<C>

H’

1000 [39-3/8]

[Fig. 6.0.1]

1 P72 ~ P144

[26ft]

> =

650 [25-19/32]

325 [2-13/16]

D : Must be open

E : Wall height (H) F : No restrictions on wall height

(Unit : mm [in])

L1 L2

450 [17-23/32]

100 [3-15/16]

(Unit : m [ft])

2 P168 ~ P234

40°

[26ft]

8m [26ft]

Page 3

[Fig. 7.1.1]

A : M10 anchor bolt procured at the site.

B : Corner is not seated.

[Fig. 8.2.1]

B C D

No.1

A (Unit : mm [in])

Å Outdoor model

P72

P96 P108 P126 P144 P168 P192 P204 P216 P234

*1 ø12.7 [1/2] for over 90m [295ft] *2 ø12.7 [1/2] for over 40m [131ft]

b c d

CCC

No.2 No.3 No.4

ı Liquid pipe

ø9.52 [3/8] *1 ø9.52 [3/8] *2 ø9.52 [3/8]

ø12.7 [1/2]

ø15.88 [5/8] ø15.88 [5/8] ø15.88 [5/8] ø15.88 [5/8] ø15.88 [5/8]

No.5

Ç Gas pipe

ø19.05 [3/4]

ø22.2 [7/8]

ø22.2 [7/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8]

[Fig. 8.2.2]

8.2

No.1 No.2

Ï Downstream unit model total

Ó The 1st branch of P168 ~ P234

¬ 4-Branching header

(Downstream unit

model total

CMY-Y104-G

c d e

No.3 No.4 No.5

~ 72

73 ~ 144

145 ~ 234

235 ~

< =

72)

Ô 8-Branching header

(Downstream unit

model total

< =

CMY-Y108-G

144)

A : Outdoor unit B : First branch C : Indoor unit D : Cap

Ì Branch kit model

CMY-Y102S-G

CMY-Y102L-G1

CMY-Y202-G1

CMY-Y302-G1

10-Branching header Downstream unit

model total

CMY-Y1010-G

< =

234)

B, C, D (Unit : mm [in])

Î Total capacity of indoor units

~ 54 55 ~ 72 73 ~ 108

109 ~ 144 145 ~ 234 235 ~ 288 289 ~

a, b, c, d, e (Unit : mm [in])

‰ Model number

06,08,12,15,18

24,27,30,36,48,54

72 96

ı Liquid pipe

ø9.52 [3/8] ø9.52 [3/8] ø9.52 [3/8]

ø12.7 [1/2] ø15.88 [5/8] ø19.05 [3/4] ø19.05 [3/4]

ı Liquid pipe

ø6.35 [1/4] ø9.52 [3/8] ø9.52 [3/8] ø9.52 [3/8]

Ç Gas pipe

ø15.88 [5/8] ø19.05 [3/4]

ø22.2 [7/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8] ø28.58 [1-1/8]

Ç Gas pipe

ø12.7 [1/2] ø15.88 [5/8] ø19.05 [3/4]

ø22.2 [7/8]

Page 4

9.2

[Fig. 9.2.1]

A : Close-packed packing B : Hollow packing

[Fig. 9.2.2]

<C> [Ball valve (gas side/flared type)]

<D> This figure shows the valve in the fully open state.

<A> [Ball valve (gas side/flanged type)]

(Unit : mm [in])

[Ball valve (liquid side)]

[Fig. 9.2.3]

[Fig. 9.3.1]

[Fig. 9.3.3]

A : Valve stem B : Stopper pin C : Packing (Accessory) D : Connecting pipe (Accessory) E : Open (Operate slowly) F : Cap, copper packing G : Service port H : Flare nut

I : ø9.52 [3/8] (PUHY-P72 ~ P108)

ø12.7 [1/2] (PUHY-P126, PUHY-P144)

ø15.88 [5/8] (PUHY-P168 ~ P234)

J : ø22.2 [7/8] (PUHY-P96 ~ P108)

ø28.58 [1-1/8] (PUHY-P126 ~ P234)

K : Field piping L : ø19.05 [3/4] (PUHY-P72)

9.3

[Fig. 9.3.2]

A : Nitrogen gas B : To indoor unit C : System analyzer D : Lo knob E : Hi knob F : Ball valve G : Liquid pipe H : Gas pipe I : Outdoor unit J : Service port

A : System analyzer B : Lo knob C : Hi knob D : Ball valve E : Liquid pipe F : Gas pipe G : Service port H : Three-way joint I : Valve J : Valve K : R410A cylinder L : Scale M : Vacuum pump N : To indoor unit O : Outdoor unit

B In case of the cylinder having no syphon pipe.

A : Syphon pipe

Page 5

9.4

[Fig. 9.4.1]

A : Steel wire B : Piping C : Asphaltic oily mastic or asphalt D : Heat insulation material A E : Outer covering B

[Fig. 10.2.1]

[Fig. 10.3.1]

<A> Change the jumper connec-

tor from CN41 to CN40

SW2-1:ON

10.2

L1 L2 L3 M1M2 M1M2 S

TB1

TB3 TB7

ABC

10.3

CN40

(51)

TB3

M1 M2

M1 M2 S

TB7

A : Power source B : Transmission line C : Ground screw

A B C

M1 M2 S

(04)

TB5

(01)

TB5

M1 M2 S

(05)

TB5

M1 M2 S

(06)

TB5

[Fig. 9.4.2]

A : Liquid pipe B : Gas pipe C : Electric wire D : Finishing tape E : Insulator

[Fig. 9.4.3]

[Fig. 9.4.4]

<A> Inner wall (concealed)

A B

Outer wall

A B

<C> Keep the jumper connector

on CN41

SW2-1:ON

[Fig. 10.3.2]

<A> Change the jumper connec-

tor from CN41 to CN40

SW2-1:ON

<C> Keep the jumper connector

on CN41

SW2-1:ON

A : Group 1 B : Group 3 C : Group 5 D : Shielded wire E : Sub remote

controller

( ) Address

CN40

(52)

TB3

M1 M2

M1 M2 S

TB7

System

controller

M1M2S

CN40

(51)

TB3

M1 M2

M1 M2 S

TB7

CN40

(52)

TB3

M1 M2

M1 M2 S

TB7

System

controller

M1M2

AB AB AB

(101)

M1 M2 S

(02)

TB5

M1 M2 S

(103)

A B C

(01)

TB5 TB15

M1 M2 12S

(02)

TB5

M1 M2 S

TB5

M1 M2 S

TB5

TB15

M1 M2 S

(105)

(155)

(03)

(04)

(03)

TB15

(07)

TB5

M1 M2 S

(05)

TB15

TB5

M1 M2 S

ABABAB

MAMAMA

(07)

TB15

TB5

M1 M2 S

(06)

TB15

TB5

M1 M2 S

<C> Outer wall (exposed)

<D> Floor (waterproofing)

<E> Roof pipe shaft

<F> Penetrating portion on fire

limit and boundary wall

1000

[39-3/8]

1000

[39-3/8]

(Unit : mm [in])

A : Sleeve B : Heat insulating material C : Lagging D : Caulking material E : Band F : Waterproofing laye G : Sleeve with edge H : Lagging material I : Mortar or other incombustible caulking J : Incombustible heat insulation material

[Fig. 10.3.3]

[Fig. 10.4.1]

A : Switch (breakers for

wiring and current leakage)

B : Breakers for current

leakage

C : Outdoor unit D : Pull box E : Indoor unit

M1 M2

TB3

TB5

M1M2 S

~208–230V

TB5

M1M2 S

L4r1

N1 N2

10.4

Ground

TB2

TB3

ABS

TB5

M1M2 S

L7r1

ABAB

E EDE E

L6L5L3L2L1

TB5

M1M2 S

Page 6

Contents

1. Safety precautions ...................................................................................... 6

1.1. Before installation and electric work .......................................... 6

1.2. Precautions for devices that use R410A refrigerant .................. 6

1.3. Before installation ...................................................................... 7

1.4. Before installation - electrical work ............................................ 7

1.5. Before starting the test run ........................................................ 7

2. About the product ....................................................................................... 7

3. Specifications .............................................................................................. 8

4. Confirmation of parts attached ................................................................... 8

5. Space required around unit ........................................................................ 8

6. Lifting method ............................................................................................. 8

7. Installation of unit ........................................................................................ 9

7.1. Installation ................................................................................. 9

8. Refrigerant piping installation ..................................................................... 9

8.1. Caution ...................................................................................... 9

8.2. Refrigerant piping system .......................................................... 9

1. Safety precautions

1.1. Before installation and electric work

GBDFEINLPGRRUTRCZSVSLHGPO

s Before installing the unit, make sure you read all the “Safety

precautions”.

s The “Safety precautions” provide very important points re-

garding safety. Make sure you follow them.

Symbols used in the text

Warning:

Describes precautions that should be observed to prevent danger of injury or death to the user.

Caution:

Describes precautions that should be observed to prevent damage to the unit.

Symbols used in the illustrations

: Indicates an action that must be avoided.

: Indicates that important instructions must be followed.

: Indicates a part which must be grounded.

: Beware of electric shock. (This symbol is displayed on the main unit label.)

<Color: yellow>

Warning:

Carefully read the labels affixed to the main unit.

Warning:

• Ask the dealer or an authorized technician to install the air conditioner.

- Improper installation by the user may result in water leakage, electric shock, or fire.

• Install the unit at a place that can withstand its weight.

- Inadequate strength may cause the unit to fall down, resulting in injuries.

• Use the specified cables for wiring. Make the connections securely so that the outside force of the cable is not applied to the terminals.

- Inadequate connection and fastening may generate heat and cause a fire.

• Prepare for strong winds and earthquakes and install the unit at the specified place.

- Improper installation may cause the unit to topple and result in injury.

• Always use an filter and other accessories specified by Mitsubishi Electric.

- Ask an authorized technician to install the accessories. Improper installation

by the user may result in water leakage, electric shock, or fire.

• Never repair the unit. If the air conditioner must be repaired, consult the dealer.

- If the unit is repaired improperly, water leakage, electric shock, or fire may

result.

• Do not touch the heat exchanger fins.

- Improper handling may result in injury.

• If refrigerant gas leaks during installation work, ventilate the room.

- If the refrigerant gas comes into contact with a flame, poisonous gases will

be released.

• Install the air conditioner according to this Installation Manual.

- If the unit is installed improperly, water leakage, electric shock, or fire may

result.

9. Additional refrigerant charge ..................................................................... 10

9.1. Calculation of additional refrigerant charge ............................. 10

9.2. Precautions concerning piping connection and valve

operation ................................................................................. 10

9.3. Airtight test, evacuation, and refrigerant charging ................... 11

9.4. Thermal insulation of refrigerant piping ................................... 11

10. Wiring ........................................................................................................ 12

10.1. Caution .................................................................................... 12

10.2. Control box and connecting position of wiring ......................... 12

10.3. Wiring transmission cables ...................................................... 12

10.4. Wiring of main power supply and equipment capacity ............ 13

11. Test run ..................................................................................................... 14

11.1. The following phenomena do not represent trouble

(emergency) ............................................................................ 14

12. Information on rating plate ........................................................................ 15

• Have all electric work done by a licensed electrician according to “Electric Facility Engineering Standard” and “Interior Wire Regulations”and the instructions given in this manual and always use a special circuit.

- If the power source capacity is inadequate or electric work is performed im-

properly, electric shock and fire may result.

• Securely install the outdoor unit terminal cover (panel).

- If the terminal cover (panel) is not installed properly, dust or water may enter

the outdoor unit and fire or electric shock may result.

• When installing and moving the air conditioner to another site, do not charge it with a refrigerant different from the refrigerant specified on the unit.

- If a different refrigerant or air is mixed with the original refrigerant, the refrig-

erant cycle may malfunction and the unit may be damaged.

• If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration from exceeding the safety limit if the refrigerant should leak.

- Consult the dealer regarding the appropriate measures to prevent the safety

limit from being exceeded. Should the refrigerant leak and cause the safety limit to be exceeded, hazards due to lack of oxygen in the room could result.

• When moving and reinstalling the air conditioner, consult the dealer or an authorized technician.

- If the air conditioner is installed improperly, water leakage, electric shock, or

fire may result.

• After completing installation work, make sure that refrigerant gas is not leaking.

- If the refrigerant gas leaks and is exposed to a fan heater, stove, oven, or

other heat source, it may generate noxious gases.

• Do not reconstruct or change the settings of the protection devices.

- If the pressure switch, thermal switch, or other protection device is shorted

and operated forcibly, or par ts other than those specified by Mitsubishi Electric are used, fire or explosion may result.

• To dispose of this product, consult your dealer.

• The installer and system specialist shall secure safety against leakage according to local regulation or standards.

- Following standards may be applicable if local regulation are not available.

• Pay special attention to the place of installation, such as a basement, etc. where refrigeration gas can accumulate, since refrigeration is heavier than the air.

• With Fresh air intake type, the installation site must be carefully chosen because outdoor air can directly blow into the room when the thermostat is turned off.

- Direct exposure to outdoor air may have harmful effects on people or food.

1.2. Precautions for devices that use R410A

refrigerant

Caution:

• Do not use existing refrigerant piping.

- The old refrigerant and refrigerator oil in the existing piping contains a large

amount of chlorine which may cause the refrigerator oil of the new unit to deteriorate.

- R410A is a high-pressure refrigerant and can cause the existing piping to

burst.

• Use refrigerant piping made of phosphorus deoxidized copper and copper alloy seamless pipes and tubes. In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.

- Contaminants on the inside of the refrigerant piping may cause the refriger-

ant residual oil to deteriorate.

Page 7

• Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. (Store elbows and other joints in a plastic bag.)

- If dust, dirt, or water enters the refrigerant cycle, deterioration of the oil and

compressor trouble may result.

• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections.

- The refrigerator oil will degrade if it is mixed with a large amount of mineral

oil.

• Use liquid refrigerant to fill the system.

- If gas refrigerant is used to seal the system, the composition of the refriger-

ant in the cylinder will change and performance may drop.

• Do not use a refrigerant other than R410A.

- If another refrigerant (R22, etc.) is mixed with R410A, the chlorine in the

refrigerant may cause the refrigerator oil to deteriorate.

• Use a vacuum pump with a reverse flow check valve.

- The vacuum pump oil may flow back into the refrigerant cycle and cause the

refrigerator oil to deteriorate.

• Do not use the following tools that are used with conventional refrigerants. (Gauge manifold, charge hose, gas leak detector, reverse flow check valve, refrigerant charge base, refrigerant recovery equipment)

- If the conventional refrigerant and refrigerator oil are mixed in the R410A,

the refrigerant may deteriorated.

- If water is mixed in the R410A, the refrigerator oil may deteriorate.

- Since R410A does not contain any chlorine, gas leak detectors for conven-

tional refrigerants will not react to it.

• Do not use a charging cylinder.

- Using a charging cylinder may cause the refrigerant to deteriorate.

• Be especially careful when managing the tools.

- If dust, dirt, or water gets into the refrigerant cycle, the refrigerant may dete-

riorate.

1.3. Before installation

Caution:

• Do not install the unit where combustible gas may leak.

- If the gas leaks and accumulates around the unit, an explosion may result.

• Do not use the air conditioner where food, pets, plants, precision instruments, or artwork are kept.

- The quality of the food, etc. may deteriorate.

• Do not use the air conditioner in special environments.

- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of

the air conditioner or damage its parts.

• When installing the unit in a hospital, communication station, or similar place, provide sufficient protection against noise.

- Inverter equipment, private power generator, high-frequency medical equip-

ment, or radio communication equipment may cause the air conditioner to operate erroneously, or fail to operate. On the other hand, the air conditioner may affect such equipment by creating noise that disturbs medical treatment or image broadcasting.

• Do not install the unit on a structure that may cause leakage.

- When the room humidity exceeds 80 % or when the drain pipe is clogged,

condensation may drip from the indoor unit. Perform collective drainage work together with the outdoor unit, as required.

1.4. Before installation - electrical work

• Install the power cable so that tension is not applied to the cable.

- Tension may cause the cable to break and generate heat and cause a fire.

• Install a leak circuit breaker, as required.

- If a leak circuit breaker is not installed, electric shock may result.

• Use power line cables of sufficient current carrying capacity and rating.

- Cables that are too small may leak, generate heat, and cause a fire.

• Use only a circuit breaker and fuse of the specified capacity.

- A fuse or circuit breaker of a larger capacity, a steel or copper wire may result in a general unit failure or fire.

• Do not wash the air conditioner units.

- Washing them may cause an electric shock.

• Be careful that the installation base is not damaged by long use.

- If the damage is left uncorrected, the unit may fall and cause personal injury or property damage.

• Install the drain piping according to this Installation Manual to ensure proper drainage. Wrap thermal insulation around the pipes to prevent condensation.

- Improper drain piping may cause water leakage causing damage to furniture

and other possessions.

• Be very careful about transporting the product.

- One person should not carry the product as it weighs more than 20 kg [45LBS].

- Some products use PP bands for packaging. Do not use any PP bands as a

means of transportation. It is dangerous.

- Do not touch the heat exchanger fins. Doing so may cut your fingers.

- When transporting the outdoor unit, support it at the specified positions on

the unit base. Also support the outdoor unit at four points so that it cannot slip sideways.

• Safely dispose of the packing materials.

- Packing materials, such as nails and other metal or wooden parts, may cause

stabs or other injuries.

- Tear apart and throw away plastic packaging bags so that children will not

play with them. If children play with a plastic bag which was not torn apart, they face the risk of suffocation.

1.5. Before starting the test run

Caution:

• Turn on the power at least 12 hours before starting operation.

- Starting operation immediately after turning on the main power switch can

result in irreversible damage to internal parts. Keep the power switch turned on during the operational season.

• Do not touch the switches with wet fingers.

- Touching a switch with wet fingers can cause electric shock.

• Do not touch the refrigerant pipes during and immediately after operation.

- During and immediately after operation, the refrigerant pipes may be hot or

cold, depending on the condition of the refrigerant flowing through the refrigerant piping, compressor, and other refrigerant cycle parts. Your hands may suffer burns or frostbite if you touch the refrigerant pipes.

• Do not operate the air conditioner with the panels and guards removed.

- Rotating, hot, or high-voltage parts can cause injuries.

• Do not turn off the power immediately after stopping operation.

- Always wait at least five minutes before turning off the power. Otherwise,

water leakage and trouble may occur.

• Do not touch the surface of the compressor during servicing.

- If unit is connected to the supply and not running, crank case heater at com-

pressor base is operating.

GBDFEINLPGRRUTRCZSVSLHGPO

Caution:

• Ground the unit.

- Do not connect the ground wire to gas or water pipes, lightning rods, or telephone ground lines. Improper grounding may result in electric shock.

2. About the product

• This unit uses R410A-type refrigerant

• Piping for systems using R410A may be different from that for systems using conventional refrigerant because the design pressure in systems using R410A is higher. Refer to Data Book for more information.

• Some of the tools and equipment used for installation with systems that use other types of refrigerant cannot be used with the systems using R410A. Refer to Data Book for more information.

• Do not use the existing piping, as it contains chlorine, which is found in conventional refrigerating machine oil and refrigerant. This chlorine will deteriorate the refrigerant machine oil in the new equipment. The existing piping must not be used as the design pressure in systems using R410A is higher than that in the systems using other types of refrigerant and the existing pipes may burst.

Page 8

3. Specifications

Model Noise level (50/60 Hz) External static pressure Indoor units

Operation temperature

Model Noise level (50/60 Hz) External static pressure

Indoor units

Operation temperature

Total capacity Model Quantity Standard type

Fresh air intake type

Total capacity Model Quantity Standard type

Fresh air intake type

PUHY-P72

56 dB<A>

1 ~ 13 Cooling mode: Heating mode: – 20 °CWB ~ 15.5 °CWB [– 4 °FWB ~ 60 °FWB] Cooling mode: 21 °CDB ~ 43 °CDB [70 °FDB ~ 109 °FDB] Heating mode: – 12.5 °CWB ~ 20 °CWB [10 °FWB ~ 68 °FWB]

PUHY-P168

61 dB<A>

1 ~ 24 Cooling mode: Heating mode: – 20 °CWB ~ 15.5 °CWB [– 4 °FWB ~ 60 °FWB] Cooling mode: 21 °CDB ~ 43 °CDB [70 °FDB ~ 109 °FDB] Heating mode: – 12.5 °CWB ~ 20 °CWB [10 °FWB ~ 68 °FWB]

GBDFEINLPGRRUTRCZSVSLHGPO

4. Confirmation of parts attached

Conduit mounting plate (ø53 [2-3/32])

Model

P72 P96 ~ P108 P126 ~ P234

– –

1 pcs.

5 Tapping screw M4

2 pcs. 2 pcs. 2 pcs.

PUHY-P96

57 dB<A>

– 5 °CDB ~ 43 °CDB [23 °FDB ~ 109 °FDB] (0 °CDB ~ 43 °CDB [32°FDB ~ 109 °FDB] with outdoor unit at lower position)

Conduit mounting plate (ø46 [1-13/16])

6 Connecting pipe (Flare)

1 ~ 16

PUHY-P192

62 dB<A>

1 ~ 24

– –

1 pc.

– –

PUHY-P108

60 dB<A>

0 Pa

50 ~130 %

06 ~ 96

1 ~ 19

PUHY-P204

62 dB<A>

0 Pa

50 ~130 %

06 ~ 96

1 ~ 24

Conduit mounting plate (ø33 [1-5/16])

7 Connecting pipe (Flange)

1 pc. 1 pc.

–

– 1 pc. 1 pc.

PUHY-P126

61 dB<A>

1 ~ 20

PUHY-P216

62.5 dB<A>

1 ~ 32

PUHY-P144

61 dB<A>

1 ~ 22

PUHY-P234

63 dB<A>

1 ~ 32

(Unit : mm [in])

Conduit mounting plate (ø27 [1-3/32])

8 Packing (inside ø23 [29/32],

outsideø35 [1-13/32])

1 pc. 1 pc.

–

– 1 pc. 1 pc.

5. Space required around unit

[Fig. 5.0.1] (P.2)

<A> Top view Side view

<C> When there is little space up to an obstruction

A Front B No restrictions on wall height (left and right) C Air outlet guide (Procured at the site) D Must be open E Wall height (H) F No restrictions on wall height

(Unit : mm [in])

L1 L2

450 [17-23/32] 100 [3-15/16]

(1) Basic space required

(2) When there is an obstruction above the unit

(3) When inlet air enters from right and left sides of unit

• Wall heights “H” of the front and the back sides shall be within total height of unit.

• When wall height “H” exceeds total height of unit, add “h” dimension to L

2 of the Fig. 5.0.1.

“h” = wall height “H’” – total height of unit

1 and

(4) When unit is surrounded by walls

Note:

• Wall heights “H” of the front and the back sides shall be lower than either the front or the back panel.

• If the panel height is exceeded, add the “h” dimension of the Fig. 5.0.1 to

1 and L2.

(Unit : mm [in])

L1 L2

450 [17-23/32] 100 [3-15/16]

Example: When the “h” dimension is 100 mm [3-15/16in],

(5) Collective installation and continuous installation

• Space required for collective installation and continuous installation: When installing several units, provide the space between each block considering passage for air and people.

• Open in two directions.

• In case of wall height “H” exceeds total height of unit, add “h” dimension (h = wall height “H’” – total height of unit) to * marked dimension.

• If there is a wall at both the front and the rear of the unit, install up to four units (Every three units in the case of P168 ~ P234.) consecutively in the side direction and provide a space of 1000 mm [39-3/8in] or more as inlet space/passage space for each four units (Every three units in the case of P168 ~ P234).

1 dimension becomes 450 [17-23/32] + 100 [3-15/16] = 550 mm

the L [21-21/32in].

6. Lifting method

[Fig. 6.0.1] (P.2)

Caution:

Be very careful to carry product.

- Do not have only one person to carry product if it weighs more than 20 kg [46LBS].

- PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.

- Do not touch heat exchanger fins with your bare hands. Otherwise you may cut your hands.

- Tear plastic packaging bag and scrap it so that children cannot play with it. Otherwise plastic packaging bag may suffocate children to death.

- When carrying outdoor unit, be sure to support it at four points. Carrying with 3-point support may make outdoor unit unstable, resulting in it falling.

Page 9

7. Installation of unit

7.1. Installation

[Fig. 7.1.1] (P.3)

A M10 anchor bolt procured at the site. B Corner is not seated.

• Fix unit tightly with bolts so that unit will not fall down due to earthquake or gust of wind.

• Use concrete or angle bracket for foundation of unit.

• Vibration may be transmitted to the installation section and noise and vibration may be generated from the floor and walls, depending on the installation conditions. Therefore, provide ample vibrationproofing (cushion pads, cushion frame, etc.).

• Be sure that the corners are firmly seated. If the corners are not firmly seated, the installation feet may be bent.

8. Refrigerant piping installation

Connecting the piping is a terminal-branch type in which refrigerant piping from the outdoor unit is branched at the terminal and connected to each of the indoor units. The method of pipe connection is as follows: flare connection for the indoor units, gas pipes for outdoor units, flare connection for P72 and brazed connection for P96 ~ P234; liquid pipes, flare connection. Note that the branched sections are brazed.

Warning:

Always use extreme care to prevent the refrigerant gas from leaking while using fire or flame. If the refrigerant gas comes in to contact with a flame from any source, such as a gas stove, it breaks down and generates a poisonous gas which can cause gas poisoning. Never weld in an unventilated room. Always conduct an inspection for gas leakage after installation of the refrigerant piping has been completed.

8.1. Caution

This unit uses refrigerant R410A. Follow the local regulations on materials and pipe thickness when selecting pipes.

1 Use the following materials for refrigeration piping.

• Material: Use refrigerant piping made of phosphorus deoxidized copper.

In addition, be sure that the inner and outer surfaces of the pipes are clean and free of hazardous sulphur, oxides, dust/dirt, shaving particles, oils, moisture, or any other contaminant.

2 Commercially available piping often contains dust and other materials. Always

blow it clean with a dry inert gas.

3 Use care to prevent dust, water or other contaminants from entering the piping

during installation.

4 Reduce the number of bending portions as much as possible, and make bend-

ing radius as big as possible.

5 Always observe the restrictions on the refrigerant piping (such as rated length,

the difference between high/low pressures, and piping diameter). Failure to do so can result in equipment failure or a decline in heating/cooling performance.

6 Either a lack or an excess of refrigerant causes the unit to make an emergency

stop. Charge the system with an appropriate amount of refrigerant. At such a time, always properly charge the unit. When servicing, always check the notes concerning pipe length and amount of additional refrigerant at both locations, the refrigerant volume calculation table on the back of the service panel and the additional refrigerant section on the labels for the combined number of indoor units.

7 Use liquid refrigerant to fill the system.

8 Never use refrigerant to perform an air purge. Always evacuate using a vacuum

pump.

9 Always insulate the piping properly. Insufficient insulation will result in a de-

cline in heating/cooling performance, water drops from condensation and other such problems.

0 When connecting the refrigerant piping, make sure the ball valve of the out-

door unit is completely closed (the factory setting) and do not operate it until the refrigerant piping for the outdoor and indoor units has been connected, a refrigerant leakage test has been performed and the evacuation process has been completed.

A Residues in commercially available antioxidants may have adverse effects on

the equipment. Braze only with non-oxide brazing material. The use of other brazing material may result in compressor damage. (Refer to item 9.2. for detailed information on pipe connections and valve operations.)

B Never perform outdoor unit piping connection work when it is raining.

Warning:

• Be sure to install unit in a place strong enough to withstand its weight. Any lack of strength may cause unit to fall down, resulting in a personal injury.

• Have installation work in order to protect against a strong wind and earthquake. Any installation deficiency may cause unit to fall down, resulting in a personal injury.

When building the foundation, give full attention to the floor strength, drain water disposal <during operation, drain water flows out of the unit>, and piping and wiring routes.

Down piping and down wiring precautions

When down piping and down wiring are performed, be sure that foundation and base work does not block the base through holes. When down piping is performed, make the foundation at least 100 mm [3-15/16 in] high so that the piping can pass under the bottom of the unit.

Warning

When installing and moving the unit, do not charge it with refrigerant other than the refrigerant specified on the unit.

- Mixing of a different refrigerant, air, etc. may cause the refrigerant cycle to mal-

function and result in severe damage.

Caution:

• Use a vacuum pump with a reverse flow check valve.

- If the vacuum pump does not have a reverse flow check valve, the vacuum

pump oil may flow back into the refrigerant cycle and cause deterioration of the refrigerator oil and other trouble.

• Do not use the tools shown below used with conventional refrigerant. (Gauge manifold, charge hose, gas leak detector, check valve, refrigerant charge base, vacuum gauge, refrigerant recovery equipment)

- Mixing of conventional refrigerant and refrigerator oil may cause the refrig-

erator oil to deteriorate.

- Mixing of water will cause the refrigerator oil to deteriorate.

- R410A refrigerant does not contain any chlorine. Therefore, gas leak detec-

tors for conventional refrigerants will not react to it.

• Manage the tools more carefully than normal.

- If dust, dirt, or water gets in the refrigerant cycle, the refrigerator oil will dete-

riorate.

• Never use existing refrigerant piping.

- The large amount of chlorine in conventional refrigerant and refrigerator oil

in the existing piping will cause the new refrigerant to deteriorate.

• Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing.

- If dust, dirt, or water gets into the refrigerant cycle, the oil will deteriorate and

the compressor may fail.

• Do not use a charging cylinder.

- Using a charging cylinder may cause the refrigerant to deteriorate.

• Do not use special detergents for washing piping.

8.2. Refrigerant piping system

Connection Example

[Fig. 8.2.1] [Fig. 8.2.2] (P.3)

Å Outdoor model ı Liquid pipe Ç Gas pipe Î Total capacity of indoor units ‰ Model number Ï Downstream unit model total Ì Branch kit model Ó The 1st branch of P168 ~ P234 ¬ 4-Branching header (Downstream unit model total Ô 8-Branching header (Downstream unit model total

10-Branching header (Downstream unit model total

A Outdoor unit B First branch C Indoor unit D Cap

*1 ø12.7 [1/2] for over 90 m [295ft]

*2 ø12.7 [1/2] for over 40 m [131ft]

< =

72)

144)

< =

234)

GBDFEINLPGRRUTRCZSVSLHGPO

Page 10

9. Additional refrigerant charge

At the time of shipping, the outdoor unit is charged with the refrigerant. As this charge does not include the amount needed for extended piping, additional charging for each refrigerant line will be required on site. In order that future servicing may be properly provided, always keep a record of the size and length of each refrigerant line and the amount of additional charge by writing it in the space provided on the outdoor unit.

9.1. Calculation of additional refrigerant charge

• Calculate the amount of additional charge based on the length of the piping

extension and the size of the refrigerant line.

• Use the table to the below as a guide to calculating the amount of additional

charging and charge the system accordingly.

• If the calculation results in a fraction of less than 0.1 kg [4oz], round up to the

next 0.1 kg [4oz]. For example, if the result of the calculation was 11.38 kg [402oz], round the result up to 11.4 kg [404oz].

Additional refrigerant charge

GBDFEINLPGRRUTRCZSVSLHGPO

(kg) [oz]

Liquid pipe size Total length of

=++

ø19.05 [3/4]

(m) × 0.29 (kg/m)

(ft) × 3.1 (oz/ft)

Liquid pipe size Total length of

+++ α

ø9.52 [3/8]

(m) × 0.06 (kg/m)

(ft) × 0.65 (oz/ft)

Liquid pipe size Total length of ø15.88 [5/8]

(m) × 0.2 (kg/m)

(ft) × 2.15 (oz/ft)

Liquid pipe size Total length of ø6.35 [1/4]

(m) × 0.024 (kg/m)

(ft) × 0.26 (oz/ft)

Liquid pipe size Total length of ø12.7 [1/2]

(m) × 0.12 (kg/m)

(ft) × 1.29 (oz/ft)

<Example>[Fig. 8.2.1] (P.3) Indoor No.1: 48 A: ø12.7 [1/2] 40 m [131ft] a: ø9.52 [3/8] 10 m [32ft]

No.2: 36 B: ø9.52 [3/8] 10 m [32ft] b: ø9.52 [3/8] 5 m [16ft] No.3: 15 C:ø9.52 [3/8] 15 m [49ft] c: ø6.35 [1/4] 10 m [32ft] No.4: 12 D:ø9.52 [3/8] 10 m [32ft] d: ø6.35 [1/4] 10 m [32ft]

No.5: 24 e: ø9.52 [3/8] 10 m [32ft] The total length of each liquid line is as follows: ø12.7 [1/2]: A = 40 [131] = 40 m [131ft] ø9.52 [3/8]: B + C + D + a + b + e

= 10 [32] + 15 [49] + 10 [32] + 10 [32] + 5 [16] + 10 [32] = 60 m [193ft] ø6.35 [1/4]: c + d = 10 [32] + 10 [32] = 20 m [64ft] Therefore, <Calculation example> Additional refrigerant charge

40 [131] × 0.12 [1.29] + 60 [193] × 0.06 [0.65] + 20 [64] × 0.024 [0.26] + 2.5 [89]

= = 11.4 kg [400oz]

Value of α

Total capacity of connecting indoor units α

Models 31 to 60 1.5 kg [53oz]

Models 61 to 126 2.0 kg [71oz] Models 127 to 180 2.5 kg [89oz] Models 181 to 234 3.0 kg [106oz] Models 235 to 264 4.0 kg [142oz] Models 265 to 366 5.0 kg [177oz]

9.2. Precautions concerning piping connection and valve operation

• Conduct piping connection and valve operation accurately.

• The gas side connecting pipe is assembled in factory before shipment.

1 For brazing to the connecting pipe with flange, remove the connecting pipe

with flange from the ball valve, and braze it outside of the unit.

2 During the time when removing the connecting pipe with flange, remove

the seal attached on the rear side of this sheet and paste it onto the flange surface of the ball valve to prevent the entry of dust into the valve.

3 The refrigerant circuit is closed with a round, close-packed packing upon

shipment to prevent gas leak between flanges. As no operation can be done under this state, be sure to replace the packing with the hollow packing attached at the piping connection.

4 At the mounting of the hollow packing, wipe off dust attached on the flange

sheet surface and the packing. Coat refrigerating machine oil (Ester oil, ether oil or alkylbenzene [small amount]) onto both surfaces of the packing.

[Fig. 9.2.1] (P.4)

A Close-packed packing B Hollow packing

At the conditions below:

• After evacuation and refrigerant charge, ensure that the handle is fully open. If operating with the valve closed, abnormal pressure will be imparted to the high- or low-pressure side of the refrigerant circuit, giving damage to the compressor, four-way valve, etc.

• Determine the amount of additional refrigerant charge by using the formula, and charge refrigerant additionally through the service port after completing piping connection work.

• After completing work, tighten the service port and cap securely not to generate gas leak.

• Flare machining dimension for systems using R410A is larger than that for systems using other types of refrigerant in order to increase the air tightness.

• Refer to the table on the below for flare machining dimensions, and follow the regulations set forth by the local authorities. Seal off the opening of the pipe with a closure material (not supplied) to keep small animals from entering the pipe if that is a concern.

flare machining dimension (mm)

outer diameter

ø6.35

ø9.52

ø12.7 ø15.88 ø19.05

size in inches

1/4" 3/8" 1/2" 5/8" 3/4"

dimension A

R410A

9.1

13.2

16.6

19.7

24.0

flare nut size (mm)

dimension B

R410A

17.0

22.0

26.0

29.0

36.0

outer diameter

ø6.35

ø9.52

ø12.7 ø15.88 ø19.05

size in inches

1/4" 3/8" 1/2" 5/8" 3/4"

[Fig. 9.2.2] (P.4)

<A> [Ball valve (gas side/flanged type)]

[Ball valve (liquid side)]

<C> [Ball valve (gas side/flared type)]

<D>This figure shows the valve in the fully open state. A Valve stem

[Fully closed at the factory, when connecting the piping, when evacuating, and when charging additional refrigerant. Open fully after the operations above are completed.]

B Stopper pin [Prevents the valve stem from turning 90° or more.] C Packing (Accessory)

[Manufacturer: Nichiasu corporation] [Type: T/#1991-NF]

D Connecting pipe (Accessory)

[Use packing and securely install this pipe to the valve flange so that gas leakage will not occur. (Tightening torque : 40 N·m [400 kg·cm]) Coat both surfaces of the packing with refrigerating machine oil. (Ester oil, ether oil or alkylbenzene [small amount])]

E Open (Operate slowly) F Cap, copper packing

[Remove the cap and operate the valve stem. Always reinstall the cap after operation is completed. (Valve stem cap tightening torque: 23 ~ 27 N·m [230 ~ 270 kg·cm])]

G Service port

[Use this port to evacuate the refrigerant piping and add an additional charge at the site. Open and close the port using a double-ended wrench. Always reinstall the cap after operation is completed. (Service port cap tightening torque: 12 ~ 15 N·m [120 ~ 150 kg·cm])]

H Flare nut

[Tightening torque: Refer to the chart on the next page. Loosen and tighten this nut using a double-ended wrench. Coat the flare contact surface with refrigerating machine oil (Ester oil, ether oil or alkylbenzene [small amount])]

I ø9.52 [3/8] (PUHY-P72 ~ P108)

ø12.7 [1/2] (PUHY-P126, PUHY-P144) ø15.88 [5/8] (PUHY-P168 ~ P234) [With P96 and P108 types, when the piping length is long and the pipe size is increased to ø12.7 [1/2], connect to a ø9.52 [3/8] pipe first and then connect to a ø12.7 [1/2] pipe. (The maximum allowable length of the ø9.52 [3/8] pipe is 1 m [39-3/8in].)]

J ø22.2 [7/8] (PUHY-P96 ~ P108)

ø28.58 [1-1/8] (PUHY-P126 ~ P234) [With P96 and P108 types, when the piping length is long and the pipe size is increased to ø12.7 [1/2], connect to a ø9.52 [3/8] pipe first and then connect to a ø12.7 [1/2] pipe.(The maximum allowable length of the ø9.52 [3/8] pipe is 1 m [39-3/8in].)]

K Field piping

[Braze to the connecting pipe. (When brazing, use unoxidized brazing.)]

L ø19.05 [3/4] (PUHY-P72)

Page 11

Appropriate tightening torque by torque wrench:

Copper pipe external dia. (mm [in]) Tightening torque (N·m/kg·cm)

Tightening angle standard:

Pipe diameter (mm [in]) ø6.35 [1/4], ø9.52 [3/8] 60 to 90 ø12.7 [1/2], ø15.88 [5/8]

[Fig. 9.2.3] (P.4)

Note: If a torque wrench is not available, use the following method as a standard: When you tighten the flare nut with a wrench, you will reach a point where the tightening torque will abruptly increase. Turn the flare nut beyond this point by the angle shown in the table above.

ø6.35 [1/4] 14 to 18 / 140 to 180 ø9.52 [3/8] 35 to 42 / 350 to 420

ø12.7 [1/2] 50 to 57.5 / 500 to 575 ø15.88 [5/8] 75 to 80 / 750 to 800 ø19.05 [3/4] 100 to 140 / 1000 to 1400

Tightening angle (°)

30 to 60

ø19.05 [3/4] 20 to 35

Caution:

• Always remove the connecting pipe from the ball valve and braze it outside the unit.

- Brazing the connecting pipe while it is installed will heat the ball valve and

cause trouble or gas leakage. The piping, etc. inside the unit may also be burned.

• Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerating machine oil to coat flares and flange connections.

- The refrigerating machine oil will degrade if it is mixed with a large amount of

mineral oil.

• Keep the ball valve closed until refrigerant charging to the pipes to be added on site has been completed. Opening the valve before charging the refrigerant may result in unit damage.

• Do not use a leak detection additive.

9.3. Airtight test, evacuation, and refrigerant

charging

1 Airtight test

Perform with the ball valve of the outdoor unit closed, and pressurize the connection piping and the indoor unit from the service port provided on the ball valve of the outdoor unit. (Always pressurize from both the high press pipe and the low press pipe service ports.)

[Fig. 9.3.1] (P.4)

A Nitrogen gas B To indoor unit C System analyzer D Lo knob E Hi knob F Ball valve G Liquid pipe H Gas pipe I Outdoor unit J Service port

Observe the following restrictions when conducting an air tightness test to prevent negative effects on the refrigerating machine oil. Also, with nonazeotropic refrigerant (R410A), gas leakage causes the composition to change and affects performance. Therefore, perform the airtightness test cautiously.

GBDFEINLPGRRUTRCZSVSLHGPO

Airtight test procedure

1. Nitrogen gas pressurization (1) After pressurizing to the design pressure (4.15 MPa [602psi]) using nitrogen gas, allow it to

stand for about one day. If the pressure does not drop, airtightness is good. However, if the pressure drops, since the leaking point is unknown, the following bubble test may also be performed.

(2) After the pressurization described above, spray the flare connection parts, brazed parts, flanges,

and other parts that may leak with a bubbling agent (Kyuboflex, etc.) and visually check for bubbles.

(3) After the airtight test, wipe off the bubbling agent.

2. Pressurization using refrigerant gas and nitrogen gas (1) Pressurizing to a gas pressure of approximately 0.2 MPa [29psi], pressurize to the design

pressure (4.15 MPa [602psi]) using nitrogen gas. However, do not pressurize at one time. Stop during pressurization and check that the pressure does not drop.

(2) Check for gas leaks by checking the flare connection parts, brazed parts, flanges, and other

parts which may leak using an R410A compatible electric leak detector.

(3) This test may be used together the with bubble type gas leak test.

Caution:

Only use refrigerant R410A.

- The use of other refrigerant such as R22 or R407C, which contains chlorine, will deteriorate the refrigerating machine oil or cause the compressor to malfunction.

2 Evacuation

Evacuate with the ball valve of the outdoor unit closed and evacuate both the connection piping and the indoor unit from the service port provided on the ball valve of the outdoor unit using a vacuum pump. (Always evacuate from the service port of both liquid pipe and gas pipe.) After the vacuum reaches 650 Pa [abs] [0.0943 psi/5Torr], continue evacuation for at least one hour or more. * Never perform air purging using refrigerant.

[Fig. 9.3.2] (P.4)

A System analyzer B Lo knob C Hi knob D Ball valve E Liquid pipe F Gas pipe G Service port H Three-way joint I Valve J Valve K R410A cylinder L Scale M Vacuum pump N To indoor unit O Outdoor unit

Note:

• Always add an appropriate amount of refrigerant. Also always seal the

system with liquid refrigerant. Too much or too little refrigerant will cause trouble.

• Use a gauge manifold, charging hose, and other parts for the refrigerant

indicated on the unit.

• Use a gravimeter. (One that can measure down to 0.1 kg [3oz].)

• Use a vacuum pump with a reverse flow check valve.

(Recommended vacuum gauge: ROBINAIR 14830A Thermistor Vacuum Gauge) Also use a vacuum gauge that reaches 65 Pa [abs] [0.00943 psi/0.5Torr] or below after operating for five minutes.

3 Refrigerant Charging

9.4. Thermal insulation of refrigerant piping

Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat-resistant polyethylene, so that no gap is observed in the joint between indoor unit and insulating material, and insulating materials themselves. When insulation work is insufficient, there is a possibility of condensation drip, etc. Pay special attention to insulation work to ceiling plenum.

Restriction

• If a flammable gas or air (oxygen) is used as the pressurization gas, it may catch fire or explode.

• Do not use a refrigerant other than that indicated on the unit.

• Sealing with gas from a cylinder will cause the composition of the refrigerant in the cylinder to change.

• Use a pressure gauge, charging hose, and other parts especially for R410A.

• An electric leak detector for R22 cannot detect leaks of R410A.

• Do not use a haloid torch. (Leaks cannot be detected.)

Since the refrigerant used with the unit is nonazerotropic, it must be charged in the liquid state. Consequently, when charging the unit with refrigerant from a cylinder, if the cylinder does not have a syphon pipe, charge the liquid refrigerant by turning the cylinder upside-down as shown in Fig.9.3.3. If the cylinder has a syphon pipe like that shown in the picture on the right, the liquid refrigerant can be charged with the cylinder standing upright. Therefore, give careful attention to the cylinder specifications. If the unit should be charged with gas refrigerant, replace all the refrigerant with new refrigerant. Do not use the refrigerant remaining in the cylinder.

[Fig. 9.3.3] (P.4)

A Syphon pipe B In case of the cylinder having no syphon pipe.

[Fig. 9.4.1] (P.5)

A Steel wire B Piping C Asphaltic oily mastic or asphalt D Heat insulation material A E Outer covering B

Heat

insulation

material A

Outer

covering B

Glass fiber + Steel wire

Adhesive + Heat - resistant polyethylene foam + Adhesive tape

Indoor Vinyl tape Floor exposed Water-proof hemp cloth + Bronze asphalt Outdoor Water-proof hemp cloth + Zinc plate + Oily paint

Page 12

Note:

• When using polyethylene cover as covering material, asphalt roofing shall not be required.

• No heat insulation must be provided for electric wires.

[Fig. 9.4.2] (P.5)

A Liquid pipe B Gas pipe C Electric wire D Finishing tape E Insulator

[Fig. 9.4.3] (P.5)

Penetrations

[Fig. 9.4.4] (P.5)

<A> Inner wall (concealed) Outer wall

<C> Outer wall (exposed) <D> Floor (waterproofing)

<E> Roof pipe shaft

<F> Penetrating portion on fire limit and boundary wall

A Sleeve B Heat insulating mater ial C Lagging D Caulking material E Band F Waterproofing laye G Sleeve with edge H Lagging material I Mortar or other incombustible caulking J Incombustible heat insulation material

GBDFEINLPGRRUTRCZSVSLHGPO

10. Wiring

When filling a gap with mortar, cover the penetration part with steel plate so that the insulation material will not be caved in. For this part, use incombustible materials for both insulation and covering. (Vinyl covering should not be used.)

• Insulation materials for the pipes to be added on site must meet the following specifications:

ø6.35 to 25.4 mm [1/4 to 1 in]

Thickness Temperature Resistance

* Installation of pipes in a high-temperature high-humidity environment, such as

the top floor of a building, may require the use of insulation materials thicker than the ones specified in the chart above.

* When certain specifications presented by the client must be met, ensure that

they also meet the specifications on the chart above.

10 mm min. [13/32 in min]

Pipe size

ø28.58 to 38.1 mm [1-1/8 to 1-1/2 in] 15 mm min. [19/32 in min]

100 °C min.

10.1. Caution

1 Follow ordinance of your governmental organization for technical standard re-

lated to electrical equipment, wiring regulations and guidance of each electric power company.

2 Wiring for control (hereinafter referred to as transmission line) shall be (5 cm or

more [2in or more]) apart from power source wiring so that it is not influenced by electric noise from power source wiring. (Do not insert transmission line and power source wire in the same conduit.)

3 Be sure to provide designated grounding work to outdoor unit.

4 Give some allowance to wiring for electrical part box of indoor and outdoor

units, because the box is sometimes removed at the time of service work.

5 Never connect the main power source to terminal block of transmission line. If

connected, electrical parts will be burnt out.

6 Use 2-core shield cable for transmission line. If transmission lines of different

systems are wired with the same multiplecore cable, the resultant poor transmitting and receiving will cause erroneous operations.

7 Only the transmission line specified should be connected to the terminal block

for outdoor unit transmission. (Transmission line to be connected with indoor unit : Terminal block TB3 for transmission line, Other : Terminal block TB7 for centralized control) Erroneous connection does not allow the system to operate.

8 In the case of connecting with an upper class controller or to conduct group

operation in different refrigerant systems, the control line for transmission is required between the outdoor units. Connect this control line between the terminal blocks for centralized control. (2-wire line with no polarity) When conducting group operation in different refrigerant systems without connecting to the upper class controller, replace the insertion of the short circuit connector from CN41 of one outdoor unit to CN40.

9 Group is set by operating the remote controller.

10.2. Control box and connecting position of wiring

1. Connect the indoor unit transmission line to transmission terminal block (TB3),

or connect the wiring between outdoor units or the wiring with the central control system to the central control terminal block (TB7). When using shielded wiring, connect shield ground of the indoor unit transmission line to the ground screw ( tween outdoor units and the central control system transmission line to the shield (S) terminal of the central control terminal block (TB7) shield (S) terminal. In addition, in the case of outdoor units whose power supply connector CN41 has been replaced by CN40, the shield terminal (S) of terminal block (TB7) of the central control system should also be connected to the ground screw ( Fix the wiring securely in place with the cable strap at the bottom of the terminal block so that the external force if not applied to the terminal block. External force applied to the terminal block may damage the block and short-circuit, ground fault, or fire may result.

) and connect shield ground of the line be-

[Fig. 10.2.1] (P.5)

A Power source B Transmission line C Ground screw

2. Conduit mounting plates (ø27 mm [1-3/32 in], ø33 mm [1-5/16 in], ø46 mm [113/16 in], ø53 mm [2-3/32 in]) are being provided. Pass the power supply and transmission wires through the appropriate knock-out holes, then remove the knock-out piece from the bottom of the terminal box and connect the wires.

3. Fix power source wiring to terminal box by using buffer bushing for tensile force (PG connection or the like).

4. Narrow the opening by using a conduit to keep small animals out.

10.3. Wiring transmission cables

1 Types of control cables

1. Wiring transmission cables

• Types of transmission cables: Shielding wire CVVS or CPEVS

• Cable diameter: More than 1.25 mm

• Maximum wiring length: Within 200 m [655ft]

• Maximum length of transmission lines for centralized control and indoor/outdoor transmission lines (Maximum length via indoor units): 500 m [1640ft] MAX The maximum length of the wiring between power supply unit for transmission lines (on the transmission lines for centralized control) and each outdoor unit and system controller is 200 m [655ft].

2. Remote control cables

• M-NET Remote Controller

Kind of remote control cable

Cable diameter

Remarks

• MA Remote Controller

Kind of remote control cable

Cable diameter

Remarks

* Connected with simple remote controller.

[AWG16]

Sheathed 2-core cable (unshielded)

0.3 to 1.25 mm (0.75 to 1.25 mm When 10 m [32ft] is exceeded, use cable with the same specifications as 1. Wiring transmission cables.

Sheathed 2-core cable (unshielded) CVV

0.3 to 1.25 mm (0.75 to 1.25 mm Within 200 m [656ft]

[AWG22 to 16]

[AWG18 to 16])*

[AWG22 to 16]

[AWG18 to 16])*

Page 13

2 Wiring examples

• Controller name, symbol and allowable number of controllers.

Name Code Possible unit connections Outdoor unit Indoor unit Remote controller Other

Variable capacity unit controller Indoor unit controller Remote controller (*1) Transmission booster unit

–

1 to 32 units per 1 OC (*1)

2 units maximum per group

0 to 1 unit per 1 OC (*1)

*1 A transmission booster (RP) may be required depending on the number of connected indoor unit controllers.

Example of a group operation system with multiple outdoor units (Shielding wires and address setting are necessary.)

[Fig. 10.3.1] M-NET Remote Controller (P.5)

[Fig. 10.3.2] MA Remote Controller (P.5)

[Fig. 10.3.3] Transmission booster unit (P.5)

<A> Change the jumper connector from CN41 to CN40

SW2-1:ON

<C> Keep the jumper connector on CN41 A Group 1 B Group 3 C Group 5 D Shielded wire E Sub remote controller

( ) Address

a. Always use shielded wire when making connections between the outdoor unit (OC) and the indoor unit (IC), as well for all OC-OC, and IC-IC wiring intervals.

b. Use feed wiring to connect terminals M1 and M2 and the earth terminal on the transmission cable terminal block (TB3) of each outdoor unit (OC) to terminals M1, M2 and

terminal S on the transmission cable block of the indoor unit (IC).

c. Connect terminals 1 (M1) and 2 (M2) on the transmission cable terminal block of the indoor unit (IC) that has the most recent address within the same group to the

terminal block on the remote controller (RC).

d. Connect together terminals M1, M2 and terminal S on the terminal block for central control (TB7) for the outdoor unit (OC).

e. On one outdoor unit only, change the jumper connector on the control panel from CN41 to CN40.

f. Connect the terminal S on the terminal block for central control (TB7) for the outdoor unit (OC) for the unit into which the jumper connector was inserted into CN40 in Step

above to the ground terminal

g. Set the address setting switch as follows. * To set the outdoor unit address to 100, the outdoor address setting switch must be set to 50.

Unit Range Setting Method

IC (Main) 01 to 50 Use the most recent address within the same group of indoor units

IC (Sub) 01 to 50

Outdoor Unit 51 to 100 Use the most recent address of all the indoor units plus 50

M-NET R/C (Main) 101 to 150 Set at an IC (Main) address within the same group plus 100

M-NET R/C (Sub) 151 to 200 Set at an IC (Main) address within the same group plus 150

MA R/C – Unnecessary address setting (Necessary main/sub setting)

h. The group setting operations among the multiple indoor units is done by the remote controller (RC) after the electrical power has been turned on.

in the electrical component box.

Use an address, other than that of the IC (Main) from among the units within the same group of indoor units. This must be in sequence with the IC (Main)

GBDFEINLPGRRUTRCZSVSLHGPO

1 M-NET Remote controller

• Max length via outdoor units: L

• Max transmission cable length: L

• Remote controller cable length: r

1+L2+L3+L4 and L1+L2+L3+L5 and L1+L2+L6

1 and L3+L4 and L3+L5 and L6 and L2+L6

1, r2, r3, r4

If the length exceeds 10 m [32ft], use a 1.25 mm

10 m [32ft] (0.3 to 1.25 mm2 [AWG22 to 16])

500 m [1640ft] (1.25 mm2 [AWG16] or more)

200 m [656ft] (1.25 mm2 [AWG16] or more)

[AWG16] shielded wire. The length of this section (L8) should be included in the

calculation of the maximum length and overall length.

2 MA Remote controller

• Max length via outdoor unit (M-NET cable): L1+L2+L3+L4 and L1+L2+L6 = 500 m [1640ft] (1.25 mm2 [AWG16] or more)

• Max transmission cable length (M-NET cable): L

• Remote controller cable length: c

1+c2 and c1+c2+c3+c4

1 and L3+L4 and L6 and L2+L6

200 m [656ft] (0.3 to 1.25 mm2 [AWG22 to 16])

200 m [656ft] (1.25 mm2 [AWG16] or more)

3 Transmission booster

• Max transmission cable length (M-NET cable): 1 L

• Remote controller cable length: r

1, r2

If the length exceeds 10 m [32ft], use 1.25 mm

1+L2+L3+L5+L6

2 L

1+L2+L3+L5+L7

3 L

1+L2+L4

4 L

6+L5+L3+L4, L4+L3+L5+L7

10 m [32ft] (0.3 to 1.25 mm2 [AWG22 to 16])

200 m [656ft] (1.25 mm2 [AWG16])

[AWG16] shielded cable and calculate the length of that portion (L4 and L7) as within the

total extended length and the longest remote length.

10.4. Wiring of main power supply and equipment capacity

Schematic Drawing of Wiring (Example)

[Fig. 10.4.1] (P.5)

A Switch (Breakers for wiring and current leakage) B Breakers for current leakage C Outdoor unit D Pull box E Indoor unit

Page 14

Thickness of wire for main power supply, On/Off capacities <Power soure : 208 V>

Minimum wire thickness (mm

P72

P96 P108 P126

Outdoor unit

Indoor unit

Outdoor unit

GBDFEINLPGRRUTRCZSVSLHGPO

Indoor unit

1. Use a separate power supply for the outdoor unit and indoor unit.

2. Bear in mind ambient conditions (ambient temperature, direct sunlight, rain water, etc.) when proceeding with the wiring and connections.

3. The wire size is the minimum value for metal conduit wiring. The power cord size should be 1 rank thicker consideration of voltage drops. Make sure the power-supply voltage does not drop more than 10 %.

4. Specific wiring requirements should adhere to the wiring regulations of the region.

5. Power supply cords of parts of appliances for outdoor use shall not be lighter than polychloroprene sheathed flexible cord (design 245 IEC57). For example, use wiring such as YZW.

6. A switch with at least 3 mm [1/8in] contact separation in each pole shall be provided by the Air conditioner installation.

P144 P168 P192 P204 P216 P234

P72

P96 P108 P126 P144 P168 P192 P204 P216 P234

Main cable

8.4/8

13.3/6

21.2/4

33.6/2

42.4/1

53.5/1/0

1.5

Minimum wire thickness (mm

Main cable

8.4/8

13.3/6

21.2/4

33.6/2

42.4/1

0.41/22

Branch Capacity Fuse

– – – – – – – – – –

1.5

Branch Capacity Fuse

– – – – – – – – – –

0.41/22

/AWG)

8.4/8

13.3/6

21.2/4

33.6/2

42.4/1

53.5/1/0

/AWG)

8.4/8

13.3/6

21.2/4

33.6/2

42.4/1

0.41/22

1.5

40 50 50 60 75

75 100 100 100 125

75 100 100 100 100

Switch (A)

40 50 50 60 75

75 100 100 100 125

75 100 100 100 100

Breaker for

wiring (NFB)Ground

40 50 50 60 75

75 100 100 100 125

Breaker for

wiring (NFB)Ground

75 100 100 100 100

Breaker for current leakage

40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 75 A 100 mA 0.1 sec. or less 75 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 125 A 100 mA 0.1 sec. or less 20 A 30 mA 0.1 sec. or less

Breaker for current leakage

40 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 50 A 100 mA 0.1 sec. or less 60 A 100 mA 0.1 sec. or less 75 A 100 mA 0.1 sec. or less 75 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 100 A 100 mA 0.1 sec. or less 20 A 30 mA 0.1 sec. or less

Warning:

• Be sure to use specified wires to connect so that no external force is imparted to terminal connections. If connections are not fixed firmly, it may cause heating or fire.

• Be sure to use the appropriate type of overcurrent protection switch. Note that generated overcurrent may include some amount of direct current.

Caution:

• A breaker for current leakage must be attached to the power supply. If no earth leakage breaker is installed, it may cause an electric shock.

• Do not use anything other than breaker and fuse with correct capacity. Using fuse and wire or copper wire with too large capacity may cause a malfunction of unit or fire.

11. Test run

11.1. The following phenomena do not represent trouble (emergency)

Phenomenon Indoor unit does not the perform cooling (heating) operation. The auto vane runs freely.

Fan setting changes during heating.

Fan stops during heating operation. Fan does not stop while operation has been stopped. No setting of fan while start SW has been turned on.

Outdoor unit does not operate by turning switch on.

Indoor unit remote controller shows “HO” or “PLEASE WAIT” indicator for about five minutes when turning ON universal power supply. Drain pump does not stop while unit has been stopped. Drain pump continues to operate while unit has been stopped.

Display of remote controller

“Cooling (heating)” flashes

Normal display

Defrost display No lighting

Heat ready

Normal display

“HO” or “PLEASE WAIT” flashes

Light out

When another indoor unit is performing the heating (cooling) operation, the cooling (heating) operation is not performed. Because of the control operation of auto vane, it may change over to horizontal blow automatically from the downward blow in cooling in case the downward blow operation has been continued for 1 hour. At defrosting in heating, hot adjusting and thermostat OFF, it automatically changes over to horizontal blow. Ultra-low speed operation is commenced at thermostat OFF. Light air automatically changes over to set value by time or piping temperature at thermostat ON. The fan is to stop during defrosting. Fan is to run for 1 minute after stopping to exhaust residual heat (only in heating).

Ultra low-speed operation for 5 minutes after SW ON or until piping temperature becomes 35°C [95°F], low speed operation for 2 minutes thereafter, and then set notch is commenced. (Hot adjust control) When the outdoor unit is being cooled and the refrigerant is resting, warming up operation is performed for at least 30 minutes to warm the compressor (only P72). During this time, only the fan operates. System is being driven. Operate remote controller again after “HO” or “PLEASE WAIT” disappear.

After a stop of cooling operation, unit continues to operate drain pump for three minutes and then stops it. Unit continues to operate drain pump if drainage is generated, even during a stop.

Cause

Page 15

12. Information on rating plate

Refrigerant (R410A) kg

Model

Allowable pressure (Ps) Net weight kg [LBS]

MANUFACTURER: MITSUBISHI ELECTRIC CORPORATION

AIR-CONDITIONING & REFRIGERATION SYSTEMS WORKS 5-66, TEBIRA, 6-CHOME, WAKAYAMA CITY, JAPAN

P72

7.0 [15 LBS 7oz]

222 [490]

9.5 [20 LBS 16oz]

P96

237 [524]

P108

9.5 [20 LBS 16oz]

237 [524]

13.0 [28 LBS 11oz]

279 [616]

P126

HP: 4.15 MPa [601psi], LP: 2.21 MPa [320psi]

P144

13.0 [28 LBS 11oz]

279 [616]

22.0 [48 LBS 9oz]

463 [1022]

P168

P192

22.0 [48 LBS 9oz]

463 [1022]

P204

22.0 [48 LBS 9oz]

463 [1022]

22.0 [48 LBS 9oz]

463 [1022]

P216

P234

22.0 [48 LBS 9oz]

463 [1022]

GBDFEINLPGRRUTRCZSVSLHGPO

Page 16

This product is designed and intended for use in the residential, commer-

cial and light-industrial environment.

WT04551X01

Please be sure to put the contact address/telephone number on

this manual before handing it to the customer.

HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Printed in Japan