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- Upward routing not allowed
CORRECT
INCORRECT
- Install the P-Trap (or U-Trap) to prevent a
water leakage caused by the blocking of in-
take air filter.
Applied U-Trap Dimension
A 70mm
B 2C
C 2 x SP
SP = External Pressure
(mmAq)
Ex) External Pressure
= 10mmAq
A 70mm
B 40mm
C 20mm
B
C
U-Trap
A
INSTALLATION OF INDOOR
Indoor Unit Drain Piping
- Drain piping must have down-slope (1/50 to
1/100): be sure not to provide up-and-down
slope to prevent reversal flow.
- During drain piping connection, be careful
not to exert extra force on the drain port on
the indoor unit.
- The outside diameter of the drain connection
on the indoor unit is 32 mm.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
- Be sure to execute heat insulation on the
drain piping.
- Install the drain raising pipes at a right
angle to the indoor unit and no more than
300 mm from the unit.
Pipe clamp
Indoor unit
Maintenance
drain port
Heat insulation material: Polyethylene foam
with thickness more than 8 mm.
11
Upward
routing
not allowed
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