INS-59
DUAL, TRIPLE, POKER DC Inverter : 4. Installation
Multi Liberty
DC Inverter
5. Drain piping
5.1 Installation of drain pipe for Indoor Unit
Note (1): The Figure below refers to ceiling installation
Note (2): The Figure below refers to floor installation
Caution:
1) Condensate drain piping must be properly insulated by close cells’ insulating material of suitable thickness,
near connection point on Indoor Unit and on the first portion (about 1m). This precaution is for avoiding
condensation forming on drain piping‘s outside.
2) For drain piping, please use a PVC of commercial type (VP16).
3) When installing piping on drain connection on Indoor Unit, take care not to force excessively in order not to
damage the connection itself.
4) Keep a slope of 1/50~1/100 along whole piping path. Pipe must not be wavy or higher than specified.
5) It is advised to reduce drain piping lenght up to max. 20m, and to arrange, if needed, special supporting
structures which prevent piping from bending under its own weight.
6) For proper installation, please refer to the Figures below.
Pipe must not be higher than specified
Suitable slope
downwards
Pipe must not be wavy
The drain hose tip must not be in water
4.2 Drain hose test
1) Pour water inside drain piping, and check if it flows down properly.
2) Take care that drain piping is not pressed along its path.
3) In new buildings, drain hose test must be carried out before laying of superstructures as panels, air spaces,
etc.
During laying of drain pipe, please avoid the most common errors, shown in the Figure below.
Higher than
specified
The drain hose
tip is in water
Wavy
The gap to the ground
is 6cm or less
The drain hose tip
is in the gutter
> 6cm
Bad smells
NO
NO
NO
NO
NO
