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4.2 - CONDENSATE DISPOSAL - REGULATIONS & GUIDELINES
Condensate float
Condensate Trap
Condensate trap
Condensate hose
SYSTEM NO. 1 - CONDENSATE TRAP
Firebird condensing boilers, when in condensing mode, extract more heat from the flue products and the resulting
condensate which is mildly acidic, needs to be drained from the boiler via a condensate pipe to the drainage system.
Provision must be made for the removal of condensate from the boiler to an internal soil stack, waste pipe,
external soil stack, gully or soak-away, as per BS 6798: 2014.
The 75mm condensate trap is provided with the boiler and is situated underneath the heat recovery unit. The
condensate trap should be checked and cleaned during annual service.
The condensate line should:
• be plastic and have a minimum diameter of 22mm;
• have a fall from the boiler of 1:100 minimum;
• have as few bends as possible to reduce the risk of trapping condensate.
CONDENSATE PIPEWORK THAT IS EXTERNAL OR IN AN UNHEATED GARAGE SHOULD NOT EXCEED
3 METERS AND SHOULD BE LAGGED WITH WATER PROOF INSULATION TO PREVENT FREEZING.
Boiler
Sealed
Condensate Drain
Trap
Lime Stone
Chippings
Free Draining Soil
Soak Away
F
igur
e 1
Boiler
Condensate Drain
Washing
Machine
Gully
Waste
Pipe
Trap
F
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e 2
Boiler
Condensate Drain
Gully
Trap
F
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e 3
Boiler
Condensate Drain
Stack
Trap
Condensate drain must have
a minimum diameter of 22mm
and it must be supported with
a 2.5˚ (1:100) fall from boiler.
F
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e 4
Ensure that the boiler combustion chamber cannot be filled through the condensate trap from another
appliance (eg. washing machine) which is drained at a higher level (see Figure 2).