Intergas Heating Ltd
23
8.4
Condensate disposal
The appliance is provided with a 25 mm flexible pipe from its condensate trap.
Connect the flexible tube from the condensate trap to the drain via an open
connection.
CAUTION
Always fill the condensate trap with water and place
it on the boiler before powering up the boiler.
Not placing or filling up the condensate trap may
cause flue gases to come into the installation room
and can lead to dangerous situations!
In order to place the condensate trap the front cover
must be pulled forward or removed entirely.
The condensate discharge system, pipework and fittings must be made of plastic.
No other materials may be used. The discharge duct must have a minimum
gradient of 5 – 20 mm/m throughout its length. Condensate discharge via the gutter
is not allowed given the risk of frost and the possible damage to materials
A.
Internal stack pipe (see diagram)
B.
Gully
C.
Condensate discharge from boiler
D.
Servicable waste trap
E.
5 – 20 mm/meter
F.
> 100 mm
G.
> 110 mm
H.
> 450 mm
If an externally-run condensate drainage pipe is used the following measures
should be adopted to prevent freezing:
- the pipe should be run internally as far as possible before going externally, the
pipe diameter should be increased to a minimum of 30mm ID (typically 32mm OD)
before it passes though the wall
- the external run should be kept as short as possible, taking the most vertical route
possible to the discharge point, with no horizontal sections in which condensate
might collect
- the external pipe should be insulated using suitable waterproof and weatherproof
insulation (‘’Class O’' pipe insulation is suitable for this purpose)
- the use of fittings, elbows etc should be kept to a minimum ans any internal
‘’burrs’’ on cut pipework should be removed so that the internal pipe section is as
smoooth as possible.
For more information about preventive measures against freezing please visit the
HHIC website http://www.centralheating.co.uk/checklists/frozen-condensate-pipes.
.