Grant Vortex Eco 15/21 - Condensate Soakaway and Pipework; Condensate Soakaway

28
Grant Vortex Eco Utility Oil Boilers
Note: Where it is not possible for the pipe to fall
towards the point of discharge - either internally into a
waste system or externally to a gulley (e.g. for boilers
installed in a basement), it will be necessary to use a
condensate pump.
Condensate disposal pipes should be kept as short as
possible and the number of bends kept to a minimum.
Pipes should be adequately fixed to prevent sagging,
i.e. at no more than 0.5 metre intervals.
External pipework
Ideally, external pipework, or pipework in unheated
areas, should be avoided. If unavoidable, external
pipework should be kept as short as possible (less than
3 metres) and 32 mm waste pipe used to minimise the
risk of ice blocking the pipe in freezing conditions.
The number of bends, fittings and joints on external
pipes should be kept to a minimum to reduce the risk
of trapping condensate.
Note: For boiler installed in an unheated area such as
an outhouse or garage, all condensate pipework should
be considered as an ‘external’.
5 - CONDENSATE DISPOSAL
To keep external pipework to a minimum, locate the
soakaway as close as possible to the boiler but ensure
it is at least 1 metre from building foundations and
away from other services, e.g. gas, electricity, etc.
The condensate pipe may be run above or below
ground level and can enter either the top or side of the
soakaway tube. Refer to Fig.14.
Ensure that the drainage holes in the soakaway tube
face away from the building.
Backfill both the soakaway tube, and the hole around
it, with 10 mm limestone chippings.
Only use a soakaway where the soil is porous and
drains easily. Do not use in clay soils or where the
soil is poorly drained.
WARNING: Any damage due to condensate backing
up into the boiler due to a high water table, in the case
of a soakaway, or flooded drains when the condensate
disposal is via a gulley or soil stack, is not covered by
the Grant product warranty.
Condensate soakaway
5.4
Fig. 14 - Purpose made condensate soakaway
Ground level
32 mm waste pipe external to the building
2.5fall
O
25 mm
300 mm
400 mm
min.
Two rows of3x12mm
holes at 25 mm centres
and 50 mm from the bottom
of the tube.Holes facing
away from the property.
Cement seal
100 mm
plastic
tube
Sealed
end
Backfill with 10 mm
limestone chippings