Engineering Manual

B-23
6-1. OUTDOOR UNIT
6
REFRIGERANT SYSTEM DIAGRAM
MXZ-2C20NA2
MXZ-3C24NA2 MXZ-3C30NA2
R.V.coil
OFF Refrigerant flow in heating
ON Refrigerant flow in cooling
Outdoor
heat exchanger
Compressor
Muffler
4-way valve
High pressure switch
Φ1/4
Φ3/8
Indoor unit B
Φ1/2
Indoor unit A
Accumulator
Indoor unit C
Φ1/4
LEVA
Distributor
Stop valve
(with service port)
Capillary tube
Capillary tube
O.D.0.16 x I.D.0.11 x 3.94
(Ø4.0 x Ø2.8 x 100)
Strainer
#100
Union
Union
Header(Gas)
Stop valve
Strainer
#100
Header (Evaporator)
Service port
Φ1/4
Φ3/8
Sub
muffler
Ambient
temperature
thermistor
RT65
Outdoor
heat exchanger temperature
thermistor
RT68
Compressor shell
temperature
thermistor
RT62
Defrost
temperature
thermistor
RT61
Indoor unit B
Indoor unit A
Indoor unit C
Service port
Strainer
#100
Strainer
#100
LEVB
LEVC
Strainer
#50
Unit: inch (mm)
Stop valve with
service port
Stop valve
Strainer
#100
Power
receiver
LEV A
LEV B
Muffler
Compressor
Defrost
thermistor
RT61
Distributor
Sub
Muffler
LEV R
Indoor unit
B
Indoor unit
A
Indoor unit
A
Indoor unit
B
Capillary tube
O.D.0.14 × I.D.0.09 ×19.68
(ø3.6 × ø2.4 × 500)
Discharge
temperature
thermistor RT62
Strainer
#100
Strainer
#100
R.V. coil
OFF
ON
Refrigerant flow in cooling
Refrigerant flow in heating
Ambient
temperature
thermistor
RT65
Outdoor heat
exchanger
temperature
thermistor
RT68
FAN-OUT
HEX-OUT
Service
port
Service
port
Strainer
#100
4-way
valve
High pressure switch
Capillary tube
O.D.0.16 x I.D.0.11 x 3.94
(ø4.0 x ø2.8 x 100)
ø3/8
ø3/8
Union
ø1/4
ø1/4
Union