Fujitsu ARU12RLF, Design & Technical Manual

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6. SYSTEM DESIGN
INDOOR UNIT 8-2.
GENERAL RULES OF DRAIN PROCESS
Install the drain pipe with downward gradient (1/100 or more) and so there are no rises in the ●
pipe.
Use general hard polyvinyl chloride pipe and connect it with adhesive (polyvinyl chloride) so
●
that there is no leakage.
Support the drain pipe with supporters each 5 to 7ft. (1.5 to 2.0m)
●
Do not perfrom air bleeding. ●
Always heat insulate the indoor side of the drain pipe. ●
When connecting the drain hose to the indoor unit, use the accessory band. (Except compact ●
wall mounted type and wall mounted type)
COMPACT CASSETTE TYPE
PVC pipe
(Local
arrangement)
(3/4 inch)
11-13/16 (300) or less
M
a
x. 27
-9
/1
6 (
7
0
0
)
Attached band
drain hose
(accessory)
Downward
gradient 1/100
or more
Horizontal or
upward gradient
5 to 7ft.
(1.5 to 2.0m)
Unit: in. (mm)
Hanging fitting
Downward gradient
1/100 or more
Air bleeding
Rise
Trap
Not good
CAUTION
Drain lift-up pipe restrictions: ●
(1) Lift-up height ≤ 27-9/16in. (700mm) (from ceiling)
(2) Drain hose (pipe) length ≤ 11-13/16in. (300mm) (between indoor unit and lift-up pipe)
When a dimensions exceed the above restrictions will cause water leakage. ●
- (06 - 105) -
SY
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DE
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SY
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