Kaisai KOU-12HFN1-QRC8, Руководство по обслуживанию

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Drainage pipe installation
Installation 101
Indoor unit
More than 50mm
More than 25mm
Plug
Water storage pipe
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.
Flexible pipe 300mm
Hanger
A
A:Length of horizontal pipe
≤
150mm
B: Lift height
≤
the pump head of water pump
Down incline pipe
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.
Blowhole
Plug
Indoor unit
Plug
Indoor unit
6.2.9 The end of drainage pipe shall not contact with ground directly.