Condensate Pipework - Worcester GREENSTAR 25Si Instruction Manual

12

CONDENSATE PIPEWORK

CONDENSATE PIPEWORK
IMPORTANT:
CONDENSATE PIPEWORK:
•
•
•
•
External pipe work
Condensate soakaway
Fitting an external air break
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER GREENSTAR 25Si/30Si
•
Ensure there are no
blockages in the pipe run
•
Care should be taken when
siting a soak-away to avoid
obstructing existing services
•
Condensate waste must not
be terminated into a septic
tank or cesspit
The condensate pipe must be a minimum of
22 mm Ø plastic pipe.
The condensate pipework must fall at
least 50 mm per metre towards the outlet
and should take the shortest practicable
route.
The pipework must follow one of the options
shown opposite or discharge directly into a
vent stack min. 450 mm above pipe invert or
into a gully below ground but above the water
level.
Wherever possible the condensate
discharge pipe work should be routed and
terminated internally. Should this not be
possible, and the only available route is
external, the following conditions should be
observed:
- Pipe work length should be kept to a
minimum and the route as vertical as
possible.
- Where pipe work is subjected to
extreme cold or wind chill, a weather
proof insulation should be used.
Alternatively the condensate pipework
could be increased to a minimum
diameter of 32 mm without the
requirement to insulate.he pipe run
The condensate drainage pipe may be run
above or below the ground to the soakaway.
The example shown opposite runs above
ground level.
The soakaway must use a 100mm diameter
plastic tube with two rows of three 12 mm
holes on 25 mm centres and 50 mm from
the bottom of the tube. The holes must face
away from the house.
The tube must be surrounded by at least
100 mm of limestone chippings to a depth
of 400mm.
Use the situation opposite when a rain water
down pipe is used to dispose of condensate
and the down pipe goes directly into an
existing sewer that carries both rainwater
and foul water.
An air break must be installed in the 32/43
mm pipework, between the boiler
condensate outlet and the drainpipe, outside
the property, to avoid flooding during
adverse weather conditions.
8 716 115 165a (06/2008)