Mitsubishi CMY-Y102S-G2, CMY-Y102L-G2, CMY-Y202-G2, CMY-Y302-G2 Installation Manual

For use with R410A-compatible units

Table-2

Model

Condition

Model

200

Connectable indoor unit Connectable indoor unit Capacity Total indoor unit capacity

1~13

Model

20~250

100~260

Model

250

1~16

Model

20~250

125~325

Model

300

1~16

Model

20~250

150~390

Model

350

1~20

Model

20~250

175~455

Model

400

1~22

Model

20~250

200~520

Model

450

1~24

Model

20~250

225~585

Model

500

1~24

Model

20~250

250~650

Model

550

1~24

Model

20~250

275~715

Model

600

1~32

Model

20~250

300~780

Model

650

1~32

Model

20~250

325~845

Model

700

1~34

Model

20~250

350~910

Model

750

1~34

Model

20~250

375~910

Model

800

1~34

Model

20~250

400~1040

2-BRANCH JOINT PIPE

(CMY-Y102S-G2, CMY-Y102L-G2, CMY-Y202-G2, CMY-Y302-G2)

1The following parts are contained in this box. Please identify the quantity with types.

Part name

Shape

1. Instruction

2. 2-branch joint (small)

3. 2-branch joint (large)

For liquid line For gas line

4. Cover 1 5. Cover 2

For liquid line

For gas line

6. Pipe 1

INSTALLATION MANUAL

7. Pipe 2

8. Pipe 3

9. Pipe 4

OPTIONAL PARTS

10. Pipe 5

11. Pipe 6

12. Pipe 7

Caution

The incorrect selection of the type of branch pipe and the size of connecting pipe does not allow the air conditioner to provide the rated capacity. Please read this instruction manual carefully for correct mounting work.

13. Pipe 8

This sheet 1 sheet

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2 CMY-Y302-G2

Part name

1 1 1 1

14. Pipe 9

1 1 1 1

15. Pipe 10

1 1 1 1

16. Pipe 11

Shape

OD19.05-ID25.4

CMY-Y102S-G2 CMY-Y102L-G2 CMY-Y202-G2

CMY-Y302-G2

OD12.7-ID6.35

OD25.4-ID28.58

2 3 1

2Please observe the items below for the mounting work.

1. Observe the restrictions on refrigerant

Limitation on Refrigerant Piping Length

piping length in Table-1.

2. Observe the restrictions regarding the connection of indoor units in Table-2.

3. Braze the pipes under nitrogen purge. The 2-branch joint is equipped with a stopper.

Outdoor Unit

Push in the pipes into the branch joint until they stop.

5. Be careful that foreign materials like dust do not enter into the piping when connecting pipes.

6. Apply insulation material to all refrigerant pipings.

7. When attaching the branch joint to the gas side of the CMY-Y202-G2, CMY-Y302-G2 make sure that it is either horizontal or vertical as shown in the illustrations below. There are no restrictions on the installation of other joints.

When horizontal When vertical

±15°

(Should not face downward.)

±15°

H’ is 40 m or less (When outdoor unit is installed below)

H is 50 m or less (When outdoor unit is installed above)

Fig.1

1 1 1 1

17. Pipe 12

OD15.88-ID9.52

1 1

1st Branch

(Branch Joint)

Branch Joint

OD15.88-ID12.7

OD25.4-ID19.05

1 1 1 1

18. Pipe 13

OD15.88-ID6.35

OD9.52-ID6.35

2 1

19. Pipe 14

OD31.75-ID28.58

(In the case of PUHY)

Table-1

Items

Total pipe length

Farthest pipe length (L)

Length

Farthest pipe length after the first branch (r) Between outdoor and indoor units

Height

Height difference

difference

between indoor units (h)

Indoor

Unit

Farthest pipe length after the first branch: R is 40 m or less

Farthest pipe length: L is 150 m or less

Indoor

Unit

Indoor

Unit

Note: No further branching allowed after the header branch

Indoor

Unit

OD19.05-ID12.7

1 1

20. Pipe 17

1 1 1 1

21. Pipe 19

OD25.4-ID15.88

Pipe Section Allowable Length

A + B + C + D + a + b +

c + d + e + f + g

A + B + D + g

or A + B + d

C + D + g

or B + d Outdoor unit above (H) Outdoor unit below (H’)

–

Branch Header

Indoor

Unit

Indoor

Unit

Indoor

Unit

Height difference between

indoor units h must be 15 m or less.

OD19.05-ID15.88

22. Pipe 20

OD31.75-ID34.93

300 m or less

150 m or less

40 m or less

50 m or less 40 m or less

15 m or less

2 1 1 1

OD31.75-ID41.28

Limitation on indoor unit connection

<Example: PUHY>

Fig.2

OD12.7-ID9.52

2 1

23. Pipe 21

Example 1

Example 2

OD19.05-ID22.2

1 1

Outdoor unit

Model 200

Indoor unit

Outdoor unit

Indoor unit

OD25.4-ID22.2

2 1 1

OD25.4-ID12.7

Total indoor unit capacity 25 + 32 × 2 + 40 + 50 + 63 = 242

Total capacity of indoor units 25 × 2 + 32 + 40 + 50 + 63 + 80 = 315

3Selection of refrigerant piping size and use of 2-branch joint.

1. Prepare the pipe to be connected in the field.

2. Determine the piping sizes of each part from Table-3,4 and 5.

3. The 2-branch joint can be connected to all piping sizes selected in the item 2. to match a specified piping size.

(1) use the joint as standard. (no auxiliary pipe is necessary. Direct connection

available)

(2) use it by connecting the auxiliary pipe.

Please conduct actual work by referring Fig.3, and Table-6~12.

4. When pipe is cut with a pipe cutter or the like, remove burr, dust and foreign materials inside the pipe, and connect the pipe.

Table-3 Piping size between outdoor unit and 1st branching (Fig. 1-A)*

Outdoor unit model Liquid pipe Gas pipe

Model 200 Model 250 Model 300 Model 350 Model 400 Model 450 Model 500 Model 550 Model 600 Model 650 Model 700 Model 750 Model 800

Model 800 over

* As the values for some models differ from those in the above table, refer to

the Installation Manual for the outdoor unit. *1 ø12.7 for over 90m *2 ø12.7 for over 40m

ø9.52 ø9.52 *1 ø9.52 *2

ø12.7

ø15.88 ø15.88 ø15.88 ø15.88 ø15.88 ø19.05 ø19.05 ø19.05 ø19.05

ø19.05

ø22.2

ø22.2 ø28.58 ø28.58 ø28.58 ø28.58 ø28.58 ø28.58 ø28.58 ø34.93 ø34.93 ø34.93 ø41.28

Table-4 Piping size between branching (Fig. 1-B·C·D)

Total capacity of indoor units

~140 141~200 201~300 301~400 401~650 651~800

801~

Liquid pipe Gas pipe

ø9.52 ø9.52 ø9.52

ø12.7 ø15.88 ø19.05 ø19.05

ø15.88 ø19.05

ø22.2 ø28.58 ø28.58 ø34.93 ø41.28

Table-5 Piping size branching (Fig. 1-a~g)

Indoor unit model Liquid pipe Gas pipe

20, 25, 32, 40, 50

63, 71, 80, 100, 125, 140

200 250

ø6.35 ø9.52 ø9.52 ø9.52

ø12.7

ø15.88 ø19.05

ø22.2

Table-7 Between outdoor unit and 1st branching (Fig.1-A)

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

*1 If the pipe is over 90m for Model 250, it is not necessary to change the pipe. *1 If the pipe is over 40m for Model 300, it is not necessary to change the pipe.

Table-6 Between branching (Fig.1-C)

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

Outdoor unit

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

Down stream

capacity

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

Model

200 ø9.52/ø19.05 no need pipe no need pipe

~140

ø9.52/ø15.88

no need pipe

pipe 4

Model

250,300

ø9.52/ø22.2

pipe 5 *1

pipe 7

Table-12

Dimension

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

141~200

ø9.52/ø19.05

no need pipe no need pipe

Pipe Pipe

201~300

ø9.52/ø22.2

pipe 5 pipe 7

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

301~400

ø12.7/ø28.58

no need pipe

pipe 10

2-Branch joint Pipe

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

401~650

ø15.88/ø28.58

no need pipe

pipe 10

Pipe

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

651~800

ø19.05/ø34.93

no need pipe

pipe 20

Fig.3

Model

350,400

ø12.7/ø28.58

no need pipe

pipe 10

Model

450~500

ø15.88/ø28.58

no need pipe

pipe 10

Model

550~650

ø15.88/ø28.58

no need pipe

pipe 10

Model

700~800

ø19.05/ø34.93

no need pipe

pipe 20

Model

800 over

ø19.05/ø41.28

no need pipe

pipe 21

ø9.52

ø15.88

ø9.52

ø19.05

ø12.7 ø19.05 ø15.88

ø25.4

801~

ø19.05/ø41.28

no need pipe

pipe 21

Table-8 Between branching (Fig.1-C)

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

Down stream

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

capacity

ø9.52

ø15.88

ø9.52

ø19.05

ø12.7 ø19.05 ø15.88

ø25.4

~140

ø9.52/ø15.88

no need pipe no need pipe no need pipe

pipe 4 pipe 5 pipe 4

pipe 12

pipe19

141~200

ø9.52/ø19.05

no need pipe no need pipe

pipe 5

no need pipe

pipe 12 pipe 17

201~300

ø9.52/ø22.2

no need pipe

pipe 6 pipe 5 pipe 6

pipe 12

pipe 7

301~400

ø12.7/ø28.58

no need pipe pipe 11, 10

pipe 10

Table-9 Between branching and indoor unit (Fig.1-e·f)

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

Indoor unit

ø9.52

ø15.88

ø9.52

ø19.05

ø 12.7 ø19.05 ø15.88

ø25.4

Model 20~50

ø6.35/ø12.7

pipe 1 pipe 2 pipe 1 pipe 3 pipe 9 pipe 3

pipe 13

pipe 8

Model

63~140

ø9.52/ø15.88

no need pipe no need pipe no need pipe

pipe 4 pipe 5

pipe 4 pipe 12 pipe 19

Model

200

ø9.52/ø19.05

no need pipe no need pipe

pipe 5

no need pipe

pipe 12 pipe 17

ø9.52/ø22.2

no need pipe

pipe 12

Table-10 Between branching (Fig.1-D)

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

Down stream

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

capacity

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

~140 ø9.52/ø15.88 no need pipe

pipe 4 pipe 5

pipe 19

141~200 ø9.52/ø19.05 no need pipe no need pipe

pipe 5

pipe 17

201~300

ø9.52/ø22.2

pipe 5 pipe 7

pipe 12

pipe 7

301~400

ø12.7/ø28.58

no need pipe

pipe 10

pipe 14

Table-11 Between branching and indoor unit (Fig.1-g)

Indoor unit

Pipe types

CMY-Y102S-G2

CMY-Y102L-G2

CMY-Y202-G2

CMY-Y302-G2

Note 1: The diameter of the pipes after the first branch does not need to be greater

than that of the main pipe.

Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe Liquid pipe Gas pipe

ø9.52

ø19.05

ø12.7 ø25.4

ø15.88

ø25.4 ø19.05 ø31.75

Model 20~50

ø6.35/ø12.7

pipe 1 pipe 3

Model

63~140 ø9.52/ø15.88 no need pipe

pipe 4 pipe 5

pipe 19

Model

200

ø9.52/ø19.05

no need pipe no need pipe

pipe 5

pipe 17

ø9.52/ø22.2

pipe 12

pipe 2

Model

250

pipe 6 pipe 5 pipe 6

pipe 7

pipe 2

pipe 3

Model

250

pipe 5 pipe 7

pipe 7

401~650

ø15.88/ø28.58

no need pipe

pipe 10

401~650

ø15.88/ø28.58

no need pipe

pipe 10

pipe 4

pipe 14

651~800

ø19.05/ø34.93

651~800

ø19.05/ø34.93

no need pipe

pipe 20

801~

ø19.05/ø41.28

801~

ø19.05/ø41.28

no need pipe

pipe 21

4Installing the cover (insulation material)

Fig.4 (Example for liquid line)

• Install the pipe cover 4 along the liquid pipe 2.

• Apply the same procedures to the gas pipe 3 also.

Seal the joint section of pipe cover 4 with insulated sealing tape (field supply). (Refer to Fig.4.)

Liquid pipe 2

Pipe cover 4

Tape (field supply)

Insulation material (field supply)

Fig.5

Pipe cover 4

Lapped space of taping

Insulation material (field supply)

Note 1. Apply insulation to all refrigerant piping (field

supply). When using a commercially available insulation material, make sure to use the heat-resistant insulation material (heat resistant 120 °C minimum).

Note 2. The insulation cover shrinks slightly, so wrap

the pipe cover 4 and the field-installed insulation material securely with tape by overlapping the tape as shown in Fig. 5.

Tape (field supply)

WT05132X01