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REFRIGERANT SYSTEM DIAGRAM
9
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 page BACK COVER.
Indoor unit
Extension pipe diameter
class Pipe diameter
Liquid 6.35(1/4) Liquid 6.35(1/4)
07/09
Gas 9.52(3/8) Gas 9.52(3/8)
Liquid 6.35(1/4) Liquid 6.35(1/4)
12(13)
Gas 12.7(1/2) Gas 12.7(1/2)
Liquid 6.35(1/4) Liquid 6.35(1/4)
18
Gas 15.88(5/8) Gas 15.88(5/8)
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 12.7(1/2)
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) 60m
Height difference between units (H) 10m
Bending point for each unit 25
Total bending point 60
❋It does not matter which unit is higher.
a
b
c
d
Outdoor
unit
Indoor
units
H
H
H
Indoor unit
D
Ball valve with
service port
Ball valve with
service port
Distributor
Strainer
Strainer
LEV
Oil
separator
Compressor
High pressure
switch 1
Accumulator
Capillary tube
Reversing valve
Discharge
temperature
thermistor
Evaporation
temperature
thermistor
(RT67)
Defrost
thermistor
Strainer
Distributor
Outdoor
heat
exchanger
High pressure
switch 2
Unit D gas pipe temperature thermistor
[9.52
Indoor unit
C
Unit C gas pipe temperature thermistor
[9.52
[6
Indoor unit
B
Unit B gas pipe temperature
thermistor
[12
Indoor unit
A
Indoor unit
A
Strainer
LEV
[6
Indoor unit
B
Strainer
LEV
[6
Indoor unit
C
Strainer
LEV
[6
Indoor unit
D
Unit A gas pipe
temperature thermistor
[12
[16
[16
[9.52
[16
Capillary tube
[2.5✕[0.6✕ 750
[2.5✕ [0.6✕1000
Capillary tube
[4.0✕[2.4✕ 400
Capillary tube
Capillary tube
Capillary tube
Capillary tube
[3.0✕[2.0✕ 200
[3.0✕[2.0✕ 200
[3.0✕[2.0✕ 200
[3.0✕[2.0✕ 200
Refrigerant flow in cooling
Refrigerant flow in heating
Reversing valve coil
heating ON
cooling OFF
MXZ-32SV -
MXZ-32SV -
E2
E1
OB254-1.qxp 03.1.16 4:33 PM Page 12