Indoor Unit - Fujitsu AIRSTAGE J-II Design & Technical Manual

5-2.

INDOOR UNIT

GENERAL RULES OF DRAIN PROCESS
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Install the drain pipe with downward gradient (1/100 or more) and so there are no rises in the
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pipe.
Use general hard polyvinyl chloride pipe (VP25) and connect it with adhesive (polyvinyl
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chloride) so that there is no leakage.
Support the drain pipe with supporters each 1.5 to 2m.
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Do not perfrom air bleeding.
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Always heat insulate the indoor side of the drain pipe.
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When connecting the drain hose to the indoor unit, use the accessory band. (Except
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compact wall mounted type and wall mounted type)
COMPACT CASSETTE TYPE
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300mm or less
drain hose
(accessory)
Attached band
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Drain lift-up pipe restrictions:
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(1) Lift-up height ≤ 700mm (from ceiling)
(2) Drain hose (pipe) length ≤ 300mm (between indoor unit and lift-up pipe)
When a dimensions exceed the above restrictions will cause water leakage.
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Downward
gradient 1/100
or more
VP25 (Local
arrangement)
Horizontal or
upward gradient
Prohibited
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Air bleeding
Rise
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Trap
- (06 - 61) -
1.5m to 2.0m
Downward gradient
1/100 or more
Hanging fitting