4
8
8.3
[Fig. 8.3.1]
[Fig. 8.3.2]
A
To heat source unit
B
To branch piping or indoor unit
A
To heat source unit
B
To indoor unit
B
A
B
B
A
B
A
K
J
L
H
M
C
D
E
F
G
I
LO
HI
[Fig. 8.4.1]
[Fig. 8.4.3]
[Fig. 8.4.2]
8.4
A
System analyzer
B
Lo Knob
C
Hi Knob
D
Ball valve
E
Liquid pipe
F
Gas pipe
G
Service port
H
Three-way joint
I
Valve
J
Valve
K
Cylinder
L
Scale
M
Vacuum pump
A
Nitrogen gas
B
To indoor unit
C
System analyzer
D
Lo Knob
E
Hi Knob
F
Ball valve
G
Liquid pipe
H
Gas pipe
I
Heat source unit
J
Service port
D
C
C
B
E
F
G
H
I
J
A
LO
HI