Mitsubishi MXZ-2A52VA Service Manual download pdf (Page 38)

Unit:mm

● Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes,refer to the

tables below.

● When diameter of refrigerant pipe is different from that of outdoor unit union, use optional Different-diameter pipe.

For further information on Different-diameter pipe,see 16-1.

Outdoor unit union diameter

For

Liquid 6.35(1/4)

Indoor unit A

Gas 12.7(1/2)

Liquid 6.35(1/4)

Indoor unit B

Gas 9.52(3/8)

Liquid 6.35(1/4)

Indoor unit C

Gas 9.52(3/8)

Liquid 6.35(1/4)

Indoor unit D

Gas 9.52(3/8)

Unit : mm (inch)

Piping length each indoor unit (a, b, c, d) 25m

Total piping length (a+b+c+d) 70m

Height difference between units (H) 10m

Bending point for each unit 25

Total bending point 70

❋It does not matter which unit is higher.

Outdoor

unit

Indoor

units

Refrigerant piping length (one way, 4 unit total)

Calculation : Xg=20g/mx(Refrigerant piping length(m)-40)

Outdoor unit

precharged

60m

400

40m

50m

200

3,500

70m

600

MXZ-4A80VA

Indoor unit

Ball valve with

service port

Ball valve

Distributor

Power

receiver

LEV A

LEV B

LEV C

LEV D

Oil separator

Compressor

High-pressure

switch

Distributor

Muffler

4-way valve

LEV E

Outdoor

heat

exchanger

Unit D gas pipe

temperature thermistor

[9.52

Indoor unit

Unit C gas pipe

temperature thermistor

[9.52

[6.35

Indoor unit

Unit B gas pipe

temperature thermistor

[9.52

Indoor unit

Unit A gas pipe

temperature thermistor

[12.7

[16

Capillary tube

[4.0✕[2.4✕400

Capillary tube

[2.5✕[0.6✕1000

[9.52

Capillary tube

[4.0✕[2.8✕ 90

Discharge

temperature

thermistor RT62

Strainer

#100

Strainer

#100

Strainer

#100

Strainer

#100

R.V. coil

OFF

Refrigerant flow in cooling

Refrigerant flow in heating

Defrost

thermistor

RT61

Outdoor heat

exchanger

temperature

thermistor

RT68

Ambient

temperature

thermistor

RT65

Strainer

#100

Strainer

#100

MAX REFRIGERANT PIPING LENGTH

Indoor unit

Extension pipe diameter

class Pipe diameter

Liquid 6.35(1/4) Liquid 6.35(1/4)

22/25/35

Gas 9.52(3/8) Gas 9.52(3/8)

Liquid 6.35(1/4) Liquid 6.35(1/4)

Gas 12.7(1/2) Gas 12.7(1/2)

Liquid 6.35(1/4) Liquid 6.35(1/4)

Gas 15.88(5/8) Gas 15.88(5/8)

Liquid 9.52(3/8) Liquid 9.52(3/8)

Gas 15.88(5/8) Gas 15.88(5/8)

OB377--2.qxp 05.12.14 3:13 PM Page 38

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Mitsubishi MXZ-2A52VA Service Manual Page 38

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