Service manual

29
6
REFRIGERANT SYSTEM DIAGRAM
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
High pressure
protect switch
Accumulator
Compressor
Strainer
Restrictor
valve
Outdoor heat exchanger
Outdoor coil
thermistor
(TH)
Indoor coil
thermistor
(RT2)
PKH-1.6 (O.D.3.2 I.D.1.6 700)
PKH-2 (O.D.3.2 I.D.1.6 300)
PKH-2.5 (O.D.3.2 I.D.1.8 430)
PKH-3 (O.D.4.0 I.D.2.0 500)
PUH-1.6 (O.D.3.2 I.D.1.8 400)
PUH-2 (O.D.4.0 I.D.2.0 430)
PUH-2.5 (O.D.4.0 I.D.2.4 1550)
PUH-3 (O.D.4.0 I.D.2.4 1070)
Distributor
with
strainer
Capillary
tube
Capillary
tube
Restrictor
valve
Strainer
Bypass
valve
Outdoor unit
PKH-1.6FKA-E / PUH-1.6VKA3.UK
PKH-2FKA-E / PUH-2VKA
2.UK
PKH-2.5FKA-E / PUH-2.5VKA
2.UK
PKH-3FKA-E / PUH-3VKA
2.UK, 3YKA2.UK
Unit : mm
PKH-4FKSA-E / PUH-4YKSA2.UK
Indoor
heat
exchanger
Indoor unit
Refrigerant pipe
(option)
19.05mm( 3/4")
(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
(check)
Service
port
High pressure
control switch
High pressure
protect switch
Accumulator
Compressor
Strainer
Restrictor
valve
Outdoor heat exchanger
Outdoor coil
thermistor
(TH3)
Indoor coil
thermistor
(RT1)
Distributor
with
strainer
Capillary
tube
Capillary
tube
Restrictor
valve
Strainer
Bypass
valve
Outdoor unit
PKH-4 (O.D.4.0 I.D.2.0 400)
PUH-4 (O.D.3.2 I.D.2.0 820) 2pcs
Refrigerant flow in cooling
Refrigerant flow in heating
R.V. coil
Heating:ON
Cooling:OFF