Mitsubishi Electric MXZ-2A30VA - E1 Service Manual page 95

MXZ-4A80VA -
E2
R.V. coil
Refrigerant flow in cooling
OFF
ON Refrigerant flow in heating
Indoor unit
D
Indoor unit
C
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Indoor unit
C
Indoor unit
D
MAX REFRIGERANT PIPING LENGTH
Piping length each indoor unit (a, b, c, d)
Total piping length (a+b+c+d)
Bending point for each unit
Total bending point
It does not matter which unit is higher.
ADDITIONAL REFRIGERANT CHARGE
Outdoor unit
Refrigerant piping length (one way, 4 unit total)
precharged
(g) 40m
3,500
0
Calculation : Xg = 20 g/m x (Refrigerant piping length (m) - 40)
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 17-1.
Indoor unit
class Pipe diameter
Liquid
22/25/35/42
Gas
Liquid
50
Gas
Liquid
60
Gas
Liquid
71
Gas
High-pressure
switch
Stop valve
(with service port)
Capillary tube
Strainer LEV A
#100
LEV B
Strainer
#100
Strainer LEV C
#100
LEV D
Strainer
#100
50m
60m
200
400
Extension pipe diameter
6.35(1/4) Liquid
9.52(3/8) Gas
6.35(1/4) Liquid
12.7(1/2) Gas
6.35(1/4) Liquid
15.88(5/8) Gas
9.52(3/8) Liquid
15.88(5/8) Gas
Compressor
Discharge
temperature
thermistor RT62
Oil separator
Capillary tube
4-way valve
Muffler
Stop valve
Strainer
#100
Power
receiver
Indoor
units
25m
70m
25
70
70m
600
6.35(1/4)
9.52(3/8)
6.35(1/4)
12.7(1/2)
6.35(1/4)
15.88(5/8)
9.52(3/8)
15.88(5/8)
95
Strainer
LEV F
Distributor
#100
a
b
Outdoor
unit
c
d
Outdoor unit union diameter
For
Liquid
Indoor unit A
Gas
Liquid
Indoor unit B
Gas
Liquid
Indoor unit C
Gas
Liquid
Indoor unit D
Gas
UNIT: mm
Outdoor
Ambient
heat
temperature
thermistor
exchanger
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
Defrost
thermistor
RT61
Capillary tube
15m
15m
10m
UNIT: mm (inch)
6.35(1/4)
12.7(1/2)
6.35(1/4)
9.52(3/8)
6.35(1/4)
9.52(3/8)
6.35(1/4)
9.52(3/8)