18
19
19
Indoor
heat
exchanger
Indoor unit
Refrigerant pipe
(option)
15.88mm( 5/8")
(with heat insulator)
Refrigerant pipe
(option)
9.52mm( 3/8")
(with heat insulator)
Flexible tube
Flared
connection
Ball valve
Strainer
Ball valve
(with Service port)
Oil separator
4-way valve
Service
port
Service
port
High pressure
control switch
Accumulator
Compressor
Strainer
Restrictor
valve
Outdoor heat exchanger
Outdoor coil
thermistor
(TH)
Pipe
temperature
thermistor
(RT2)
PKH-2 (O.D.3.2 I.D.1.8
N
500)
PUH-2 (O.D.4.0 I.D.2.0
N
430)
Distributor
with
strainer
Capillary
tube
Capillary
tube
Restrictor
valve
Strainer
Bypass
valve
Outdoor unit
Refrigerant flow in cooling
Refrigerant flow in heating
6
REFRIGERANT SYSTEM DIAGRAM
PKH-2GKLA / PUH-2VKA
2
PUH-2AKA
1
·TH-A
Unit : mm
<4-Way valve solenoid coil>
Heating ON
Cooling OFF
PKH-2GKLA / PUH-2NKA
1
Indoor
heat
exchanger
Indoor unit
Refrigerant pipe
(option)
15.88mm( 5/8")
(with heat insulator)
Refrigerant pipe
(option)
9.52mm( 3/8")
(with heat insulator)
Flexible tube
Flared
connection
Ball valve
Strainer
Ball valve
(with Service port)
Oil separator
4-way valve
Service
port
Service
port
High pressure
control switch
Accumulator
Compressor Capillary
tube
Strainer
Restrictor
valve
Outdoor heat exchanger
Outdoor coil
thermistor
(TH)
Pipe
temperature
thermistor
(RT2)
PKH-2 (O.D.3.2 I.D.1.8
N
500)
O.D.4.0 I.D.2.4
N
430
Distributor
with
strainer
Capillary
tube
Capillary
tube
Restrictor
valve
Strainer
Bypass
valve
Muffler
Outdoor unit
O.D.3.2 I.D.1.2
N
1250
Refrigerant flow in cooling
Refrigerant flow in heating
Unit : mm
<R.V. coil>
Heating ON
Cooling OFF
OC231A