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C
D
H
C
E
B
A
C
C
E
G
C
J
A
B
F
G
E
I
J
A
A
C
F
H
6. Cooling pipe and drain pipe
E
6.5. Drainage Piping Work
•
Use VP25 (O. D. ø32 PVC TUBE) for drain piping and provide 1/100 or
more downward slope.
•
Be sure to connect the piping joints using adhesive of polyvinyl chlo-
ride family.
•
Observe the figure below for piping work.
•
Use attached drain hose to change the pipe extraction direction.
A Max. 20m
B about 1.5 to 2 m interval
C Indoor unit
D Insulation (9 mm or more)
E Downward slope (1/100 or more)
F Support metal
G Use a support metal in the middle to prevent drain pipe movement.
H Air bleeder
I Raised
J Odor trap
Do not install air bleeder, raisers and odor traps.
6.5. Drainage Piping Work
Grouped piping
A VP (O. D. ø32 PVC TUBE)
B Make it as large as possible
C Indoor unit
D Make the piping size large for grouped piping.
E Downward slope (1/100 or more)
D
F VP30 (O. D. ø38 PVC TUBE) for grouped piping. (9 mm or more insulation)
For drain-up
G Max. 150 (as short as possible)
H Downhill gradient (1/100 or more)
I Up to 50 cm
J Ceiling panel
Outdoor unit drainage pipe connection
When drain piping is necessary, use the drain pan (optional parts).
19
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