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3.1 standards & regulatIons - Condensate dIsPosal
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 condensate trap is provided with the boiler and situated on the front of the boiler (under the cleaning door). This
should be checked at regular intervals and cleaned during annual service.
The condensate line should:
• be plastic and have a minimum diameter of 22mm dia.;
• have a fall from the boiler of 1:200 minimum;
• have as few bends as possible to reduce the risk of trapping condensate.
Copper or steel cannot be used.
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
Discharge Pipe
75mm
Soak Away
Lime Stone
Chippings
Free Draining Soil
500mm
Figure 1
Boiler
Gully
Condensate Drain
Washing
Machine
Trap
Waste Pipe
Figure 2
Boiler
Gully
Condensate Drain
Trap
Figure 3
Condensate drain must have
a minimum diameter of 22mm
and it must be supported with
a 2.5˚ (1:200) fall from boiler.
Boiler
Stack
Condensate Drain
Discharge Pipe
75mm
Min. 50mm Air Gap
Figure 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).
systeM no. 1 Condensate traP
always prime condensate trap with water.
Condensate drain baffle
Condensate baffle and condensate trap
Condensate trap
Condensate hose
Before switching on your
Firebird condensing liquid fuel
boiler check that:
(1) The condensate drain
baffle is in place.
(2) That the condensate trap
is primed.
(3) The condensate discharge
pipe is a corrosion
resistant pipe.
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