SiE33-003
Installation
General Information
37
Grouped Drain
Piping
1. 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.
2. The pipework should be kept as short as possible and the number of indoor units per group kept to a
minimum.
Use of an Auxiliary
Drain Hose
(Flexible)
If a drain pan made of polystyrene foam is used then an auxiliary drain hose (flexible) is also essential. A
flexible drain hose permits the drain socket and drain pipe to be connected without difficulty and prevents
any undue strain being placed on the drain pan.
Important points
1. The drain pipe should be at least equal in size to that of the indoor unit.
2. The drain pipe is thermally insulated to prevent the formation of condensation inside the pipe.
3. The drain up mechanism should be fitted before the indoor unit is installed and when the electricity has
been connected some water should be added to the drain pan and the drain pump checked to see that
it is functioning correctly.
4. All connections should be secure. (Special care is needed with PVC pipe)
The use of a colored adhesive with PVC pipes will help you to remember to connect them up.)
Si33-003.book Page 37 Monday, June 25, 2001 9:06 AM
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