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warmhaus.com
EXTERNAL CONNECTIONS
External drain, gully or rainwater hopper
1 Boiler
2 Visible air break
3 38mm minimum trap
4 Visible air break and trap not required if there is a
trap with a minimum condensate seal of 38 mm
incorporated into the boiler – refer to manufacturer’s
instructions
5 External length of pipe 3 m maximum
6 Open end of condensate discharge pipe direct into
gully 25 mm min below grating but above water level;
end cut at 45 °
7 Minimum internal diameter 19 mm
8 Pipe size transition point
9 Minimum internal diameter 30 mm
10 Water/weatherproof insulation
11 Fit drain cover/leaf guard
INTERNAL CONDENSATE PIPE DISCHARGE TERMINATION
Example of a purpose made soakaway
1 Condensate discharge pipe from boiler
2 Ground (this section of the condensate discharge
pipe may be run either above or below round level);
End cut at 45°
3 Diameter 100 mm minimum plastic tube
4 Bottom of tube sealed
5 Limestone chippings
6 Two rows of three 12 mm holes at 25 mm centres, 50
mm from bottom of tube and facing away from house
7 Hole depth 400 mm minimum by 300 mm diameter
8 Minimum internal diameter 19 mm
9 Pipe size transition point
10 Minimum internal diameter 30 mm
11 Water/weatherproof insulation
