3

1 2

4

(5) Pipe connectionWhen connecting the twinning kit to the outdoor unit, note the following:

· Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).· If the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m

[6 ft].Make sure the height of the trap is 200 mm [7-7/8 in] or more.If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.

CAUTION

WARNING

Field piping

Field piping

Insulation material (field supply)

Insulation material (field supply)

Field piping

Twinning kitInsulation cover

Tape (field supply)

Tape (field supply)

Less than

AB

Within2 m [6 ft]

A0 B0 C0 D0 E0 F0P500 P250 P250P550 P300 P250

CMY-Y100VBK2P600 P350 P250P650 P350 P300P700 P350 P350P750 P400 P350P800 P450 P350 CMY-Y200VBK2P850 P450 P400

PUHY-**Y(S)HM P900 P450 P450EP400 EP200 EP200EP450 P250 EP200EP500 EP300 EP200

CMY-Y100VBK2EP550 EP300 P250EP600 EP300 EP300EP650 P350 EP300HP400 HP200 HP200

CMY-Y100VBK2HP500 HP250 HP250P500 P250 P250P550 P300 P250

CMY-Y100VBK2P600 P350 P250P650 P350 P300

PUHY-**T(S)HM P700 P350 P350P750 P400 P350P800 P450 P350 CMY-Y200VBK2P850 P450 P400P900 P450 P450P144 P72 P72P168 P96 P72

PUHY-**Y(S)HMUP192 P120 P72 CMY-Y100VBK2P216 P120 P96P240 P120 P120P144 P72 P72P168 P96 P72P192 P120 P72 CMY-Y100VBK2

PUHY-**T(S)HMU P216 P120 P96P240 P120 P120

HP144 HP72 HP72CMY-Y100VBK2

HP192 HP96 HP96

PUHY-**Y(S)HMCHP400 HP200 HP200

CMY-Y100VBK2HP500 HP250 HP250

P450(-AH) P250 P200P500 P250 P250P550 P300 P250 CMY-Y100VBK2P600 P350 P250

PUHY-**Y(S)HCP650 P350 P300P700 P350 P350P750 P400 P350P800 P400 P400 CMY-Y200VBK2P850 P450 P400P900 P450 P450

ø15.88[5/8]

ø19.05[3/4]

ø12.7[1/2]

ø15.88[5/8]

ø15.88[5/8]

ø15.88[5/8]

ø19.05[3/4]

ø15.88[5/8]

ø15.88[5/8]

ø15.88[5/8]

ø15.88[5/8]

ø15.88[5/8]

ø19.05[3/4]

Outoor unit 2Outoor unit 1 Outoor unit 3

Twinning 1

Less than200 mm(7 inch)

Twinning 2

To Indoor unit

• For your safety, thoroughly read the following instructions prior to installation.

Safety Precautions• Thoroughly read the following “Safety Precautions” to ensure proper installation.• Observe the following important safety precautions at all times.• Hazards that can occur from incorrect handling are classified by the symbols below:

1. Confirming the Package ContentsThe following twinning and accessory piping parts are included with the Twinning Kit (CMY-Y100VBK2, CMY-Y200VBK2, and CMY-Y300VBK2). Verify that all items are presentbefore starting installation.After checking, prepare the twinning kit by connecting the twinning pipes B, C, and D to thetwinning pipe A.*Always use the twinning pipes included in the kit when preparing the twinning kit.If the field-supplied pipes do not fit the parts in the kit, use the accessory piping partslisted below.

(1) Twinning pipes

Twinning aInsulation cover

Twinning kit

Pipe b (Before the twinning) Pipe c (After the twinning)

L-shape pipe d (After the twinning)

Twinning kit

L-shape pipe D (After the twinning)Insulation cover

Twinning A

Pipe B (Before the twinning) Pipe C (After the twinning)

(2) Accessory piping parts

(3) List of field-supplied parts• Refrigerant pipes other than the ones provided in the kit.• Heat-resistant insulation material (for field-supplied refrigerant pipes)• Insulation cover tape

2. Selecting the Correct Size Refrigerant Pipes andUsing the Twinning Kit(1) Two outdoor units

1 Field-supply the pipes to be connected to the kit.2 Choose the correct size pipe using the table below. Connect

the field-supplied pipe to the twinning kit for the sizes in thetable that are marked with an asterisk (*).

3 If the pipe was cut with a pipe cutter, remove the burrs andeliminate foreign materials before connecting.

(2) Three outdoor units1 Field-supply the pipes to be connected to the kit.2 Choose the correct size pipe using the table below.

Connect the field-supplied pipe to the twinning kitfor the sizes in the table that are marked with anasterisk (*).

3 If the pipe was cut with a pipe cutter, remove theburrs and eliminate foreign materials beforeconnecting.

(3) Slope of twinning pipesMake sure the slope of the twinning pipes are at an angle within ±15° tothe horizontal plane.If the slope exceeds the specified angle, the unit may be damaged.

(4) The length of the straight pipe between indoor units and the twin-ning pipe

Use the pipes supplied in the twinning kit, and make sure the section ofthe field-supplied pipe that connects to the twinning pipe has at least500 mm [19-11/16 in] of straight section. (The section of the field-supplied pipe that connects to the twinning pipe must have at least 500mm [19-11/16 in] of straight section.) If the straight section is less than500 mm [19-11/16 in], it may result in equipment damage.

<2 m [6 ft] or less>

· If the twinning pipe is installed above the baseof the outdoor unit, it should be no more than200 mm [7-7/8 in].

Reducer

±15°

The angle of tilt of the reducer should be within

±15° with the ground.

Note: See the following drawing for the fitting position

of the twinning pipe.

Note: Refer to the figure below for the installationposition of the twinning pipe.

Slope of the twinning pipes are at an angle within±15° to the horizontal plane

Twinning pipe

±15°

3. Pipe Connection ExampleConnect the pipes between outdoor units, referencing the figures below.

<For two outdoor units>

<For three outdoor units>

4. Insulation Cover InstallationInstall the insulation cover on the twinning kit after brazing the pipes and twinning kit.Insulate all refrigerant pipes. Insulate the liquid and gas pipes separately, and pipes located inside the unit as well as the outside.Use heat-resistant insulation material (Heat resistant: at least 120 °C [248 °F], Thickness: liquid = 10 mm [13/32 in],gas = 20 mm [13/16 in]). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a gap,and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).

Tape (field supply)

Lapped space of taping

Insulation coverInsulation material(field supply)

As the insulation cover contracts slightly, conduct taping in the field securely by providing lapped parts as shown in the left, so that no gap will exist on the insulation cover and field supply insulation material.

Tape (field-supplied)

Insulation cover Heat-resistant insulationmaterial (field-supplied)

Overlap margin of the tape

Insulation covers can shrink.Overlap the tape as shown inthe left figure so that therewill be no gap in between theinsulation cover or field-installed insulation material.

Twinning kit

Field-supplied pipe

Heat-resistant insulation material (field-supplied)

Field-supplied pipe

Insulation cover

Field-supplied pipe Heat-resistantinsulation material(field-supplied)

Tape (field-supplied)

Tape (field-supplied)

Field piping

Field piping

Twinning kitField piping

Twinning kit

The length of the straight pipe must be 500 mm (19 inch) or longer.

The length of the straight pipe must be 500 mm (19 inch) or longer.

Field-supplied pipe

Twinning kit

Straight pipe that is 500 mm[19-11/16 in] or more

Field-supplied pipe

Twinning kit

Field-supplied pipe

Straight pipe that is 500 mm[19-11/16 in] or more

Outdoor unit 2 Outdoor unit 3

WT05134X02

Model

CMY-Y100VBK2

CMY-Y200VBK2

CMY-Y300VBK2

Section

Liquid

Gas

Liquid

Gas

Liquid

Gas

OD12.7[1/2]-ID9.52[3/8] (2)

OD22.2[7/8]-ID28.58[1-1/8]

OD15.88[5/8]-ID12.7[1/2] (2)

OD34.93[1-3/8]-ID41.28[1-5/8]

OD12.7[1/2]-ID9.52[3/8]

OD28.58[1-1/8]-ID22.2[7/8] (3)

OD15.88[5/8]-ID12.7[1/2]

OD22.2[7/8]-ID19.05[3/4] (2)

OD12.7[1/2]-ID15.88[5/8] (2)

OD38.1[1-1/2]-ID41.28[1-5/8]

OD15.88[5/8]-ID9.52[3/8]

OD28.58[1-1/8]-ID19.05[3/4] (2)

OD15.88[5/8]-ID12.7[1/2]

OD38.1[1-1/2]-ID34.93[1-3/8]

Supplied pipe

Incorrect handling can result in death or serious injury.

Incorrect handling can result in bodily injury and/or structure damage.

WARNING

CAUTION

MITSUBISHI ELECTRIC MULTI AIR CONDITIONERS OPTIONAL PARTS

CMY-Y100VBK2, Y200VBK2, Y300VBK2Outdoor Twinning Kit Installation Manual

2 Two outdoor units

Unit modelLiquid GasC or E D or F

A1 A2 A3B1 B2 B3

Twinning pipe~Outdoor unit C1 C2 C3D1 D2 D3E1 E2 E3F1 F2 F3

1 Two outdoor unitsPackage unit name A0

Component unit name Outdoor unit 1 B0Outdoor unit 2 C0

OutIdoor Twinning Kit D0

Indoor unit~Twinning pipe Liquid A E0Gas B F0

Outdoor unit 2Outdoor unit 1

To Indoor unitf

e

d

c

b

a

Liquid twinning pipe

Gas twinning pipe

To Indoor unit

Outdoor unit 1 Outdoor unit 2

Outdoor unit 2Outdoor unit 1 Outdoor unit 3

To Indoor unit

To Indoor unitb

a

d

c

j

ig

h

e

f

Liquid 1 twinning pipe Liquid 2 twinning pipe

Gas 1 twinning pipe Gas 2 twinning pipe

Outdoor unit 3Outdoor unit 1 Outdoor unit 2

3 Three outdoor unitsPackage unit name A0

Outdoor unit1 B0Component unit name Outdoor unit2 C0

Outdoor unit3 D0Outdoor Twinning Kit E0

Indoor unit~Twinning pipe2Liquid A F0Gas B G0

Twinning pipe1~Twinning pipe2Liquid C H0Gas D I0

4 Three outdoor units

Unit modelLiquid Gas

E or G or I F or H or JA1 A2 A3B1 B2 B3

Twinning pipe~Outdoor unitC1 C2 C3D1 D2 D3E1 E2 E3F1 F2 F3

Outdoor unit 1

<More than 2 m [6 ft] apart>

Field piping

Field pipingTwinning kit

The length of the straight pipe must be 500 mm (19 inch) or longer.

Field-supplied pipe

Twinning kit

Straight pipe that is 500 mm[19-11/16 in] or more

Field-supplied pipe

To Indoorunit200 mm [7-7/8 in]

max

Twinning 1 Twinning 2 5. Miscellaneous NotesSecure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes asnecessary.

(Unit: mm[in])

(Unit: mm[in])

(Unit: mm[in])

(Unit: mm[in])(Unit: mm[in])

ø28.58[1-1/8]

ø34.93[1-3/8]

ø41.28[1-5/8](*)

ø28.58[1-1/8]

ø28.58[1-1/8]

ø28.58[1-1/8]

ø34.93[1-3/8]

ø41.28[1-5/8](*)

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]

ø34.93[1-3/8]

ø41.28[1-5/8](*)

PUHY-**YHM

PUHY-**THM

PUHY-**YHMU

PUHY-**THMU

PUHY-**YHMC

PUHY-**YHC

A1A2A3

P250ø9.52[3/8](*)ø22.2[7/8]

EP200ø9.52[3/8](*)ø19.05[3/4](*)HP200ø9.52[3/8](*)ø19.05[3/4](*)P250ø9.52[3/8](*)ø22.2[7/8]P72

ø9.52[3/8](*)ø19.05[3/4](*)

P72ø9.52[3/8](*)ø19.05[3/4](*)HP72ø9.52[3/8](*)ø19.05[3/4](*)HP200ø9.52[3/8](*)ø19.05[3/4](*)P200ø9.52[3/8](*)ø19.05[3/4](*)

B1B2B3

P300ø12.7[1/2]

ø22.2[7/8]

EP300ø12.7[1/2]

ø22.2[7/8]

HP250ø9.52[3/8](*)ø22.2[7/8]P300ø12.7[1/2]

ø22.2[7/8]P96

ø9.52[3/8](*)ø22.2[7/8]P96

ø9.52[3/8](*)ø22.2[7/8]HP96ø9.52[3/8](*)ø22.2[7/8]

HP250ø9.52[3/8](*)ø22.2[7/8]P250ø9.52[3/8](*)ø22.2[7/8]

C1C2C3

P350ø12.7[1/2](*)ø28.58[1-1/8](*)

–

–

–

–

–

–

P350ø12.7[1/2](*)ø28.58[1-1/8](*)P120ø12.7[1/2]

ø22.2[7/8]P120ø12.7[1/2]

ø22.2[7/8]

–

–

–

–

–

–

P300ø12.7[1/2]

ø22.2[7/8]

D1D2D3

P400ø15.88

[5/8]ø28.58[1-1/8]

–

–

–

–

–

–

P400ø15.88

[5/8]ø28.58[1-1/8]

–

–

–

–

–

–

–

–

–

–

–

–

P350ø12.7[1/2](*)ø28.58[1-1/8]

E1E2E3

P450ø15.88

[5/8]ø28.58[1-1/8]

–

–

–

–

–

–

P450ø15.88

[5/8]ø28.58[1-1/8]

–

–

–

–

–

–

–

–

–

–

–

–

P400ø15.88

[5/8]ø28.58[1-1/8]

F1F2F3–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

P450ø15.88

[5/8]ø28.58[1-1/8]

Liquid twinning pipe

A0 B0 C0 D0 E0 F0 G0 H0 I0P950 P400 P300 P250

P1000 P400 P300 P300P1050 P400 P350 P300P1100 P400 P350 P350 CMY-Y300VBK2P1150 P450 P350 P350P1200 P450 P400 P350

PUHY-**Y(S)HM P1250 P450 P450 P350EP700 EP300 EP200 EP200EP750 EP300 P250 EP200EP800 EP300 EP300 EP200 CMY-Y300VBK2EP850 EP300 EP300 P250EP900 EP300 EP300 EP300P950 P400 P300 P250

P1000 P400 P300 P300P1050 P400 P350 P300

PUHY-**T(S)HM P1100 P400 P350 P350 CMY-Y300VBK2P1150 P450 P350 P350P1200 P450 P400 P350P1250 P450 P450 P350P264 P120 P72 P72P288 P120 P96 P72

PUHY-**Y(S)HMU P312 P120 P120 P72 CMY-Y300VBK2P336 P120 P120 P96P360 P120 P120 P120P264 P120 P72 P72P288 P120 P96 P72

PUHY-**T(S)HMU P312 P120 P120 P72 CMY-Y300VBK2P336 P120 P120 P96P360 P120 P120 P120

P850(-AH) P350 P300 P200P900(-AH) P350 P300 P250

P950 P400 P300 P250P1000 P400 P300 P300

PUHY-**Y(S)HC P1050 P400 P350 P300 CMY-Y300VBK2P1100 P400 P350 P350P1150 P400 P400 P350P1200 P400 P400 P400P1250 P450 P450 P350

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø41.28[1-5/8](*)

ø34.93[1-3/8](*)

ø41.28[1-5/8](*)

ø41.28[1-5/8](*)

ø34.93[1-3/8](*)

ø41.28[1-5/8](*)

ø34.93[1-3/8](*)

ø41.28[1-5/8](*)

ø41.28[1-5/8](*)

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø19.05[3/4]

ø34.93[1-3/8]

ø34.93[1-3/8]

ø34.93[1-3/8]

ø34.93[1-3/8]

ø34.93[1-3/8]

ø34.93[1-3/8]

A1A2A3

P250ø9.52[3/8](*)ø22.2[7/8](*)EP200ø9.52[3/8](*)ø19.05[3/4](*)P250ø9.52[3/8](*)ø22.2[7/8](*)

P72ø9.52[3/8](*)ø19.05[3/4](*)

P72ø9.52[3/8](*)ø19.05[3/4](*)P200ø9.52[3/8](*)ø19.05[3/4](*)

B1B2B3

P300ø12.7[1/2](*)ø 22.2[7/8](*)EP300ø12.7[1/2](*)ø 22.2[7/8](*)P300ø12.7[1/2](*)ø 22.2[7/8](*)

P96ø9.52[3/8](*)ø22.2[7/8](*)

P96ø9.52[3/8](*)ø22.2[7/8](*)P250ø9.52[3/8](*)ø22.2[7/8](*)

C1C2C3

P350ø12.7[1/2](*)ø28.58[1-1/8]

–

–

–

P350ø12.7[1/2](*)ø28.58[1-1/8]P120ø12.7[1/2](*)ø22.2[7/8](*)P120ø12.7[1/2](*)ø22.2[7/8](*)P300ø12.7[1/2](*)ø22.2[7/8](*)

D1D2D3

P400ø15.88[5/8](*)ø28.58[1-1/8]

–

–

–

P400ø15.88[5/8](*)ø28.58[1-1/8]

–

–

–

–

–

–

P350ø12.7[1/2](*)ø28.58[1-1/8]

E1E2E3

P450ø15.88[5/8](*)ø28.58[1-1/8]

–

–

–

P450ø15.88[5/8](*)ø28.58[1-1/8]

–

–

–

–

–

–

P400ø15.88[5/8](*)ø28.58[1-1/8]

F1F2F3–

–

–

–

–

–

–

–

–

–

–

–

–

–

–

P450ø15.88[5/8](*)ø28.58[1-1/8]

PUHY-**YHM

PUHY-**THM

PUHY-**YHMU

PUHY-**THMU

PUHY-**YHC

To Indoor unit

200 mm[7-7/8 in]or more

Twinning pipe

* See the Installation Manual that came with the outdoor unit for installation instructions.

Properly dispose of packing materials.

• Plastic bags can pose suffocation and choking hazards: keepthem out of the reach of children. Tear the plastics bags beforedisposing of them.

Do not touch the refrigerant pipes and refrigerantcircuit components with bare hands during andimmediately after operation.• During or immediately after operation, certain parts of the unitsuch as pipes and compressor may be either very cold or hot,depending on the state of the refrigerant in the unit at the time.To reduce the risk of frostbites and burns, do not touch theseparts with bare hands.

Only a dealer or qualified technician should performinstallation.• Improper installation may result in refrigerant gas leakage andequipment damage.

Do not make any modifications or alterations.Consult your dealer for repair.• Improper installation may result in water leakage, electric shock,or fire.

In the event of a refrigerant leak, thoroughly ventilatethe room.• If refrigerant leaks and comes in contact with an open flame,toxic gases will be generated.

Properly install all parts according to the instructionsin the Installation Manual.• If the wrong twinning pipe or wrong size connecting pipe isused, air conditioning performance will suffer.

When installing or relocating the unit, check that nosubstance other than the specified refrigerant(R410A) enters the refrigerant circuit.• Any presence of foreign substance or air can cause abnormalpressure rise or explosion.

After installation, check for a refrigerant leak.

• If leaked refrigerant comes in contact with a heat source, suchas a fan heater, stove, or electric grill, toxic gases will begenerated.

To Indoor unit

To Indoor unitGas twinning pipe

A

B

C

D

E

F

To Indoor unit

To Indoor unitLiquid twinning pipe 1

Gas twinning pipe 1

A

B

C

D

E

F

G

HLiquid twinning pipe 2

Gas twinning pipe 2

I

J

2 m (6 ft)2 m [6 ft] Twinning pipe

To Indoor unit

Upward slopeTwinning pipe

Downward slopeTo Indoor unit

100 mm[3-15/16in] ormore

To Indoor unit

Total pipe length = A+B<10 m [32 ft]

Pipe B (Before the twinning)OD15.88[5/8]-ID15.88[5/8]

L83[3-9/32]OD28.58[1-1/8]-ID28.58[1-1/8]

L342[13-15/32]OD19.05[3/4]-ID19.05[3/4]

L85[3-3/8]OD31.75[1-1/4]-ID34.93[1-3/8]

L337[13-9/32]OD15.88[5/8]-ID19.05[3/4]

L85[3-3/8]OD19.05[3/4]-ID19.05[3/4]

L85[3-3/8]OD28.58[1-1/8]-ID34.93[1-3/8]

L337[13-9/32]OD31.75[1-1/4]-ID38.1[1-1/2]

L339[13-3/8]

Twinning A

ID15.88[5/8]×ID12.7[1/2]×ID12.7[1/2]

ID28.58[1-1/8]×ID25.4[1]×ID25.4[1]

ID19.05[3/4]×ID15.88[5/8]×ID15.88[5/8]

ID31.75[1-1/4]×ID28.58[1-1/8]×ID28.58[1-1/8]

ID15.88[5/8]×ID12.7[1/2]×ID12.7[1/2]

ID19.05[3/4]×ID15.88[5/8]×ID15.88[5/8]

ID28.58[1-1/8]×ID25.4[1]×ID25.4[1]

ID31.75[1-1/4]×ID28.58[1-1/8]×ID28.58[1-1/8]

Pipe C (After the twinning)OD12.7[1/2]-ID12.7[1/2]

L128[5-1/16]OD25.4[1]-ID22.2[7/8]

L190[7-1/2]OD15.88[5/8]-ID15.88[5/8]

L123[4-27/32]OD28.58[1-1/8]-ID28.58[1-1/8]

L192[7-9/16]OD12.7[1/2]-ID12.7[1/2]

L128[5-1/16]OD15.88[5/8]-ID19.05[3/4]

L125[4-15/16]OD25.4[1]-ID28.58[1-1/8]

L192[7-9/16]OD28.58[1-1/8]-ID34.93[1-3/8]

L187[7-3/8]

Model

CMY-Y100VBK2

CMY-Y200VBK2

CMY-Y300VBK2

Section

Liquid

Gas

Liquid

Gas

LiquidSecond row

LiquidFirst row

GasSecond row

GasFirst row

Label

A

D

C

B

A (Red)

C (Red)

D (Red)

B (Red)

L-shape pipe D (After the twinning)

OD12.7[1/2]-ID12.7[1/2]

OD25.4[1]-ID22.2[7/8]

OD15.88[5/8]-ID15.88[5/8]

OD28.58[1-1/8]-ID28.58[1-1/8]

OD12.7[1/2]-ID12.7[1/2]

OD15.88[5/8]-ID15.88[5/8]

OD25.4[1]-ID28.58[1-1/8]

OD28.58[1-1/8]-ID28.58[1-1/8]

Insulation cover

Small

Large

Small

Large

Small

Small

Large

Large

Instruction

1(This sheet)

(Unit: mm[in])