8. Installation
25
MULTI/SINGLE
Indoor unit
Ceiling Mounted cassette 4-way
8.5.3 Connection of an auxiliary(flexible) drain hose
• To connect drain pipe to the drain socket on the indoor unit, an auxiliary flexible drain hose should be used.
auxiliary flexible drain hose allows that the drain pipe can be connected to the socket without breaking by
excessive strain.
CAUTION
– The supplied flexible drain hose should not be curved, neither screwed. The curved or screwed hose may
cause a leakage of water.
– It is need to insulate the auxiliary drain hose with thermal insulation material.
8.5.4 Ground drain piping
• It is standard work practice to make connections to the main pipe from above. The pipe down from the
combination should be as large as possible.
• The pipe work should be kept as short as possible and the number of indoor units per group kept to a minimum.
• Face the vent pipe opening facing downward to keep foreign matter from penetrating the system.
Indoor Unit
Drain pan
Metal clamp
Thermal insulation(bend area)
Auxiliary drain hose
Thermal insulation (drain pipe area)
※
According to type of indoor unit,
external appearance could be different.
Face piping
downward
Vent pipe
Face the vent pipe opening facing downward to
keep foreign matter from penetrating the system
