Buderus 600 - 11S Installation And Maintenance Instructions Manual page 13

1.7.4 Condensate drain
A condensate drain is integrated in the boiler. The drain outlet
is a standard G1" outside connection. This drain needs to be
connected to a drainage point. All pipework and fittings in the
condensate drainage system MUST be made of plastic - no
other materials may be used.
The routing of the drain must be made to allow a minimum fall
of 1 in 20 away from the boiler, throughout its length.
Excessive external pipe runs should be avoided in order to
prevent possible freezing.
Any external pipework should be a minimum of 32 mm internal
diameter.
WARNING!
Any external run must be insulated.
Ensure that the condensate trap is filled with water.
1.7.5 Condensate removal
Positioning and termination of the condensate drain pipe
The condensate pipe should be run and terminate internally to
the house soil and vent stack or waste pipe. Alternatively, the
condensate can be discharged into the rainwater system, or
into a purpose-made soak away (condensate absorption
point).
All connecting drainage pipework should have a fall of at least
2.5° to the horizontal, or approximately 50 mm per metre of
pipe run.
If the drainage pipe has to be run externally, it is recommended
that the pipe be insulated to protect against frost.
It should be noted that the connection of a condensate pipe to
a drain may be subject to local building controls.
Material for condensate
The condensate drainage pipe should be run in a standard
drain pipe material, e.g. PVC (polyvinyl chloride), PVC-U
(unplasticized polyvinyl chloride), BS (acrylonitrile-
butadienestyrene), PP (polypropylene polyprolene) or PVC-C
(cross-linked polyvinyl chloride).
Subject to modifications resulting from technical improvements!
Installation and maintenance instructions for wall-mounted condensing gas boiler 600 - 11S/19S/24S/24C • 02/2006
Installation
Buderus • http://www.buderus-domestic.co.uk
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