Mxz-2A40Va Mxz-2A52Va; Max Refrigerant Piping Length; Cooling; Refrigerant System Diagram - Mitsubishi Electric MXZ-2A40VA Service Manual

REFRIGERANT SYSTEM DIAGRAM

9

MXZ-2A40VA MXZ-2A52VA

R.V. coil
Refrigerant flow in cooling
OFF
ON Refrigerant flow in heating
Indoor unit
B
Stop valve
(with service port)
Indoor unit
A
Stop valve
(with service port)
Indoor unit
A
Indoor unit
B

MAX REFRIGERANT PIPING LENGTH

Piping length each indoor unit (a, b)
Total piping length (a+b)
Bending point for each unit
Total bending point
It does not matter which unit is higher.
Refrigerant piping length (one way, 2 unit total)
Outdoor unit
precharged
1,300
Calculation : Xg=20g/mx(Refrigerant piping length(m)-20)
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.
Indoor unit
class Pipe diameter
Liquid 6.35(1/4)
22/25/35
Gas 9.52(3/8)
[9.52
[12
[9.52
Capillary tube
[3.0 [2.0 200
[6
LEV A
Stop valve
(with strainer #100)
Capillary tube
[3.0 [2.0 200
[6
LEV B
Stop valve
(with strainer #100)
20m 30m
0 200
Extension pipe diameter
Liquid 6.35(1/4)
Gas 9.52(3/8)
Compressor
Discharge
temperature
thermistor RT62
Muffler
4-way valve
[12
[12
Indoor
units
20m
30m
20
30
b
For
Indoor unit A
Indoor unit B
35
[12
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
Ambient
temperature
thermistor
RT65
Defrost
thermistor
RT61
Capillary tube
[3.0 [1.4 600 (4 pcs)
Strainer
#100
Distributor
[9.52
a
Outdoor
unit
Unit : mm (inch)
Outdoor unit union diameter
Liquid
Gas
Liquid
Gas
Unit:mm
15m
15m
10m
6.35(1/4)
9.52(3/8)
6.35(1/4)
9.52(3/8)