12
10
10.3
[Fig. 10.3.1]
[Fig. 10.3.2]
D
C
C
B
B
E
F
G
H
I
J
A
LOW
HI
LOW
HI
B
A
K
J
L
H
M
C
D
E
N
N
O
F
G
I
[Fig. 10.3.3]
A
10.4
[Fig. 10.4.1]
[Fig. 10.4.2]
[Fig. 10.4.3]
C
A
B
D
E
A
: Steel wire
B
: Piping
C
: Asphaltic oily mastic or asphalt
D
: Insulation material A
E
: Outer covering B
B
A
D
C
E
E
E
D
A
B
A
: High-pressure/liq-
uid pipe
B
: Low-pressure/gas
pipe
C
: Electric wire
D
: Finishing tape
E
: Insulation
[Fig. 10.4.4]
<A> Inside wall (concealed)
<B> Outside wall
<C> Outside wall (exposed)
<D> Floor (waterproofing)
A B
A B
D
C
E
A
B
D
F
G
B
<E> Roof pipe shaft
<F> Access hole on fire and
boundary walls
A
: Sleeve
B
: Insulation
C
: Lagging
D
: Caulking material
E
: Band
F
: Waterproofing layer
G
: Sleeve with edge
H
: Lagging material
I
: Mortar or other incombustible caulking
J
: Explosion-resistant insulation
F
H
D
B
G
I
A
J
1m
1m
A
: Siphon pipe
B
If the R410A cylinder does not have a siphon pipe.
A
: Nitrogen gas
B
: To indoor unit
C
: System analyzer
D
: Low knob
E
: High knob
F
: Valve
G
: Low-pressure/liquid
pipe
H
: High-pressure/gas
pipe
I
: Heat source unit
J
: Service port
A
: System analyzer
B
: Low knob
C
: High knob
D
: Valve
(heat source unit)
E
: Low-pressure/liquid
pipe
F
: High-pressure/gas
pipe
G
: Service port
H
: Three-way joint
I
: Valve
J
: Valve
K
: R410A cylinder
L
: Scale
M
: Vacuum pump
N
: To indoor unit
O
: Heat source unit
