Mitsubishi Electric SEZ-KD VA Series, Service Manual

Page: 51 / 301

51
a
b
c
d
Outdoor
unit
Indoor
units
15 m
10 m
15 m
Refrigerant piping length (one way, 5 unit total)
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 40)
e
Max.
Height
difference
Outdoor unit
precharged
(g) 50 m
200
40 m
0
4,000
60 m
400
70 m
600
80 m
800
Indoor unit
E
Stop valve
(with service port)
Stop valve
Power
receiver
LEV A
LEV B
LEV C
LEV D
Oil separator
Compressor
Muffler
4-way valve
LEV F
Indoor unit
D
Indoor unit
C
Indoor unit
B
Indoor unit
A
Indoor unit
B
Indoor unit
C
Indoor unit
D
Indoor unit
A
Capillary tube
Capillary tube
Discharge
temperature
thermistor RT62
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
Strainer
#100
LEV E
Indoor unit
E
Strainer
#100
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Strainer
#100
Distributor
Outdoor
heat
exchanger
Capillary tube
Defrost
thermistor
RT61
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
High-pressure
switch
HEX-OUT
FAN-OUT
MXZ-5D102VA
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,e) 25 m
Total piping length (a+b+c+d+e) 80 m
Bending point for each unit 25
Total bending point 80
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 E
Liquid 6.35(1/4)
Gas 9.52(3/8)
It is irrelevant which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
OBH626E