¢ 3D flow cassette type
300 mm
or less
VP25 (O.D. 32 mm)
local arrangement
850 mm or less
Horizontal or
upward gradient
Downward gradient
1/100 to 1/50
Hanging fittings
1.5 to 2.0 m
VP25 (O.D. 32 mm)
Downward gradient 1/100 to 1/50
650 mm
or less
Rise
Prohibited
Trap
Air bleeding
• Drain lift-up pipe restrictions:
– Lift-up height ≤ 850 mm (from ceiling)
– Drain hose (pipe) length ≤ 300 mm (between indoor unit and lift-up pipe)
• When a dimensions exceed the above restrictions will cause water leakage.
• Install the drain hose horizontally or with a slight upward gradient so air pocket is not generated in
the drain pipe. The air pocket may cause noise occurred due to water backfl ow when the drain
pump is stopped.
5-2. Indoor unit - (06-68) - 5. Drain connection
SYSTEM
DESIGN
SYSTEM
DESIGN
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