Drainage pipe installation
Installation 155
In d o o r u n it
M o re th a n 5 0 m m
M o re th a n 2 5 m m
P lu g
W a te r sto ra ge p ipe
6.2.7 Lifting pipe setting of indoor unit with water pump
The length of lifting pipe should not exceed the pump head of indoor unit water pump.
Pump head of big four way cassette: 750mm
Pump head of compact four way cassette: 500mm
The drainage pipe should be set down inclined after the lifting pipe immediately to avoid wrong
operation of water level switch.
Refer the following picture for installation reference.
F le xib le pip e 3 0 0m m
H a n g er
A
A :L e n g th o f h o riz o n ta l p ip e ≤ 1 5 0 m m
B : L ift h e ig h t≤ th e p u m p he a d o f w a te r p u m p
D o w n in c line p ip e
B
6.2.8 Blowhole setting
For the concentrated drainage pipe system, there should design a blowhole at the highest point of main
pipe to ensure the condensate water discharge smoothly.
The air outlet shall face down to prevent dirt entering pipe.
Each indoor unit of the system should be installed it.
The installation should be considering the convenience for future cleaning.
B lo w h o le
P lug
In d o o r un it
P lug
In d o o r un it
6.2.9 The end of drainage pipe shall not contact with ground directly.
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