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FERSYSTEM TECH 38 C
Condensate discharge
Where possible the condensate should discharge into an internal soil pipe or waste system. The minimum
pipe diameter required is 22 mm, a trap has already been fitted to the appliance with a flexible tail to
facilitate the connection to the condensate discharge pipe.
The pipe should be a solvent weld plastic, not copper, as the condensate has a ph value of 4 (slightly
acidic).
Where it is not possible to terminate internally, the condensate discharge pipe may be run outside (see
below drawing).
Any external run is subject to freezing, in severe weather conditions. To avoid this the pipework should
be installed to dispose of the condensate quickly, with as much as possible run internally, before passing
through the wall.
Pipework external to the building should be increased in diameter to 32 or 40 mm solvent weld. It should
be run to a external drain or soakaway, with a maximum length of 3 metres.
When a soakaway (condensate absorption point) is used, it should be constructed as shown below, or
use a specifically designed unit, for example Mc Alpine SOAK1GR available from most plumbing and
heating stockists.
fig. 27
24
Cod. 3540U330 - 09/2009 (Rev. 00)
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