Mitsubishi Electric MXZ-2C30VA, Service Manual

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39
Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the
tables below.
UNIT: mm (inch)
Piping length each indoor unit (a, b) 20m
Total piping length (a+b) 30m
Bending point for each unit 20
Total bending point 30
MXZ-2C40VA
MAX REFRIGERANT PIPING LENGTH
a
b
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 2 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 20)
Outdoor unit
precharged
(g)
30m
200
20m
0
1,300
Max.
Height
difference
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
Stop valve
(with strainer #100)
LEV A
LEV B
Compressor
Muffler
4-way valve
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
Capillary tube
Stop valve
(with strainer #100)
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Discharge
temperature
thermistor RT62
Stop valve
(with service port)
Stop valve
(with service port)
Defrost
thermistor
RT61
Distributor
Capillary tube
Strainer
#100
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
HEX-OUT
Sub muffler
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
OBH584G