Service manual

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8
REFRIGERANT SYSTEM DIAGRAM
INDOOR UNIT
PK-2.5
PK-3
PK-4
OUTDOOR UNIT
PU-2.5/3J series
PU-4J series
Indoor heat
exchanger
Distributor
Flexible tube
Flared
connection
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
Ball
valve
Low pressure
switch
Charge
pIug
Check
pIug
High pressure
switch
Outdoor heat
exchanger
Strainer
Capillary tube for
injection Only
PU-2.5NJA
1 PU-3YJA2
PU-2.5VJA2 PU-3YJA3
PU-3NJA1 PU-4YJSA2
PU-3VJA2 PU-4YJSA3
PU-4TJSA2
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
Indoor coil
thermistor
RT2
INDOOR UNIT
PK-1.6
PK-2
OUTDOOR UNIT
PU-1.6/2J series
Indoor heat
exchanger
Flexible tube
Flared
connection
Flared
connection
Refrigerant pipe [15.88(5/8)
(with insulator) option
Refrigerant pipe [9.52(3/8)
(with insulator) option
Ball
valve
Low pressure
switch
Charge
pIug
Check plug
High pressure
switch
Outdoor heat
exchanger
Strainer
Capillary tube
for injection
(Only PU-2VJA2)
PU-2NJA1
Capillary tube
Compressor
Accumulator
Ball valve
(with service port)
flow of refrigerant
PU-1.6 (O.D.3.2 I.D.1.8 L900)
PU-2 (O.D.4.0 I.D.2.0 L430)
Distributor
Indoor coil
thermistor
RT2
PK-2.5FLA
2
, PK-2.5FLA
3
, PK-2.5FLA
4
, / PU-2.5VJA
2
, PU-2.5NJA
1
PK-3FLA
2
/ PU-3VJA
2
, PU-3YJA
3
, PU-3NJA
1
PK-3FLA
3
, PK-3FLA
4
, PK-3FLA
5
/ PU-3NJA
1
PK-4FLSA
2
, PK-4FLSA
3
, PK-4FLSA
4
, / PU-4VLJSA
2
, PU-4YJSA
3
, PU-4TJSA
2
PK-1.6FLA
3
/ PU-1.6VLJA
2
PK-2FLA
3
/ PU-2VJA
2
, PU-2NJA
1
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