Mitsubishi Electric MXZ-2C30VA, Service Manual

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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, refer to "PARTS CATALOG".
UNIT: mm (inch)
Piping length each indoor unit (a, b, c, d) 25m
Total piping length (a+b+c+d) 60m
Bending point for each unit 25
Total bending point 60
MXZ-4C71VA
MAX REFRIGERANT PIPING LENGTH
Outdoor unit union diameter
For
Indoor unit A
Liquid 6.35(1/4)
Gas 12.7(1/2)
Indoor unit B
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit C
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit D
Liquid 6.35(1/4)
Gas 9.52(3/8)
Indoor unit
D
Power
receiver
LEV A
LEV B
LEV C
LEV D
Oil separator
Compressor
Muffler
4-way valve
LEV E
Indoor unit
C
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Indoor unit
C
Indoor unit
D
Capillary tube
Capillary tube
Discharge
temperature
thermistor RT62
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Distributor
HEX-OUT
Outdoor heat
exchanger
temperature
thermistor
RT68
Defrost
thermistor
RT61
Capillary tube
Ambient
temperature
thermistor
RT65
FAN-OUT
Strainer
#100
Stop valve with
service port
Stop valve
High-pressure
switch
a
b
c
d
Outdoor
unit
Indoor
units
15m
10m
15m
Refrigerant piping length (one way, 4 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 40)
Max.
Height
difference
Outdoor unit
precharged
(g) 50m
200
40m
0
2,700
60m
400
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
OBH584G