
16
8
REFRIGERANT SYSTEM DIAGRAM
INDOOR UNIT
PK-2.5
PK-3
PK-4
OUTDOOR UNIT
PU-2.5/3J series
PU-4J series
Flexible tube
Flared
connection
Strainer
Flared
connection
PK-2.5
/ PK-3 Refrigerant pipe
[
15.88(5/8")
(with insulator) option
PK-4 Refrigerant pipe
[
19.05(3/4")
(with insulator) option
Refrigerant pipe
[
9.52(3/8")
(with insulator) option
Low pressure
switch
Charge
pIug
Check
pIug
High pressure
switch
Outdoor heat
exchanger
Muffler
Strainer
Capillary tube for
injection Only
PU-2.5NJA
1
PU-2.5VJA
2
PU-4TJSA
2
PU-3NJA
1
PU-4YJSA
3
Capillary
tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
PU-2.5 [O.D.3.2 I.D.1.6 L760] 2pcs
PU-3 [O.D.3.2 I.D.1.8 L800] 2pcs
PU-4 [O.D.3.2 I.D.2.0 L840] 2pcs
Capillary tube size
Ball
valve
strainer
Indoor heat
exchanger
Distributor
with
strainer
Pipe
temperature
thermistor
RT2
Indoor heat
exchanger
Distributor
with
strainer
Flexible tube
Flared
connection
Flared
connection
Refrigerant pipe
[
15.88(5/8")
(with insulator) option
Refrigerant pipe
[
9.52(3/8")
(with heat insulator) option
Ball
valve
Low pressure
switch
Charge
pIug
Check
pIug
High pressure
switch
Outdoor heat
exchanger
Capillary tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
[O.D.3.2
o
I.D.1.8
o
L800]
o
2pcs
strainer
Pipe
temperature
thermistor
RT2
D.P.R.
(Discharge pressure regulator)
strainer
strainer
PK-2.5FLD, PK-2.5FLD
1
, PK-2.5FLD
2
/ PU-2.5VJA
2
, PU-2.5NJA
1
PK-3FLD, PK-3FLD
1
, PK-3FLD
2
/ PU-3NJA
1
PK-4FLSD, PK-4FLSD
1
, PK-4FLSD
2
/ PU-4VLJSA
2
, PU-4YJSA
3
, PU-4TJSA
2
PK-3FLD, PK-3FLD
1
, PK-3FLD
2
/ PU-3VJC, PU-3YJC
Unit : mm(inch)
OC232--1.qxp 01.10.1 9:17 PM Page 16