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6
REFRIGERANT SYSTEM DIAGRAM
■
PAC-AK50BC
PAC-AK52BC
PAC-AK50BC
PAC-AK51BC
PAC-AK52BC
Branch box
PAC-AK53BC
PAC-AK30BC
PAC-AK31BC
PAC-AK32BC
Piping connection size
A
{9.52
Liquid (mm)
{15.88
Gas (mm)
■ In case of using 1-branch box
Flare connection employed (No brazing)
A
■ In case of using 2-branch boxes
A
B
OCH508A
PAC-AK51BC
PAC-AK53BC
E
D
C
B
A
Thermistor (TH-A~E)
(Gas pipe temperature)
LEV A~E
(Linear expansion valve)
Strainer
#100
Strainer
#100
Capillary
Capillary
tube3
tube4
Capillary tube 1
(For return of oil
from oil separator)
The pipe connection size differs according to the type and capacity of indoor units.
Match the piping connection size of branch box with indoor unit.
If the piping connection size of branch box does not match the piping connection size
of indoor unit, use optional different-diameter (deformed) joints to the branch box side.
(Connect deformed joint directly to the branch box side.)
Branch box
B
B
2 branches pipe (joint)
: optional parts
A
A
B
Branch box #2
■
PAC-AK30BC
PAC-AK32BC
Thermistor (TH-A~C)
(Gas pipe temperature)
Strainer
#100
Capillary
tube4
Capillary tube 2
(For SV2)
( 4
( 4
B
B
B
Branch box #1
B
B
B
11
PAC-AK31BC
C
B
A
LEV A~C
(Linear expansion valve)
Strainer
#100
Capillary
tube3
Capillary tube 4
Capillary tube 3
behind LEV
ahead of LEV
(in cooling mode)
(in cooling mode)
2.4
L140)
5 ( 4
2.4
L140)
3 ( 4
B
■ installation procedure (2 branch pipe (joint))
Refer to the installation manuals of
MSDD-50AR-E and MSDD-50BR-E.
unit : mm
2.2
L130)
5
2.2
L130)
3
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