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Internal Condensate Pipe Discharge Termination
The possibility of waste pipes freezing downstream of the connection point
should be considered when determining a suitable connection point - e.g. a
slightly longer pipe run to an internal soil stack may be preferable to a shorter
run connecting into a kitchen waste pipe discharging directly through the wall to
an external drain.
Note - Where “gravity discharge” to an internal termination is not physically
possible (e.g. the discharge point is above the appliance location, or access is
obstructed by a doorway), or where very long internal pipe runs would be
required to reach a suitable discharge point, then a condensate pump should be
used.
External waste pipes from kitchens, utility rooms or bathrooms such as sink,
basin, and bath or shower waste outlets should be insulated with waterproof UV
resistant, class 0 material, terminated below the grid but above the water line
it terminates into the grid. (See insulation section for guidance on suitable
materials).
Use of a Condensate Pump to an Internal Termination
Condensate can be removed using a proprietary condensate pump, of a
minimise the risk of freezing during prolonged sub-zero spells, one of the
following methods internal to the property for terminating the boiler condensate
pump to a foul water discharge point should be adopted such as an internal soil
stack (preferred method), internal kitchen, utility room or bathroom waste pipe
such as sink, basin, and bath or shower waste. Figure 3 shows a typical
connection method.
Condensate Pumps
October 2018 Issue 1.0
