Service manual

44
Unit:mm
MXZ-A18WV -
E1
High pressure
protect thermistor
Compressor
Discharge
temperature
thermistor
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
Muffler
Outdoor
heat
exchanger
Muffler
LEV (A)
Evaporation
temperature
thermistor
LEV (B)
Strainer
Strainer
Strainer
Defrost
thermistor
Capillary tube
{3.0✕{1.8✕600
Capillary tube
{1.8✕{0.6✕750
Capillary tube
{3.0✕{2.0✕400
Capillary tube
{3.0✕{2.0✕400
Stop valve
(with service port)
Gas pipe temperature
B thermistor
Gas pipe temperature
A thermistor
Stop valve
Stop valve
Indoor
Unit B
Indoor
Unit B
Indoor
Unit A
Indoor
Unit A
Stop valve
(with service port)
4-way valve
{8
{6
{6
{12
{12
● 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 page BACK COVER.
Indoor unit
Extension pipe diameter
class Pipe diameter
Liquid 6.35(1/4) Liquid 6.35(1/4)
07/09
Gas 9.52(3/8) Gas 9.52(3/8)
Liquid 6.35(1/4) Liquid 6.35(1/4)
12
Gas 12.7(1/2) Gas 12.7(1/2)
Outdoor unit union diameter
For
Liquid 6.35(1/4)
Indoor unit A
Gas 9.52(3/8)
Liquid 6.35(1/4)
Indoor unit B
Gas 9.52(3/8)
Unit : mm (inch)
Piping length each indoor unit (a, b) 20m
Total piping length (a+b) 30m
Height difference between units (H) 10m
Bending point for each unit 15
Total bending point 30
❋It does not matter which unit is higher.
a
Outdoor
unit
b
H
H
H
MAX REFRIGERANT PIPING LENGTH
MXY-A18WV
-
E1
OB307A2.qxp 03.2.19 4:02 PM Page 44