Baxi Potterton Gold FSB 30 HE manual Making the Condensate Drain, Connection

Min. radius 100mm
Point ‘A’	Gravity Drain min. fall 3°
		Note: The point of discharge from
		the pumped length of condensate
Boiler	Max. Head	pipe (point ‘A’) must not be below
	3 metres	the level of the pump, whether
		discharging direct into a drain or
		into an additional gravity drain.
		Alternative Horizontal
		Discharge
Fig. A

10.0 Installation
10.6	Making the Condensate Drain
	Connection
1. 3.5 metres of flexible 10mm PVC pipe are supplied
with the boiler, ready connected to the pump. 0.5
metres of this length remains coiled within the boiler
to allow removal of the pump assembly. This must not
be uncoiled to provide extra length.
2. A fitting and securing clip (Fig. B) to accept the
10mm PVC pipe and connect to 21.5mm overflow
pipe is also supplied. When using this fitting to connect

Condensate Pipe

Direct Connect

Fitting

Fig. B

10mm PVC Pipe

(8.5mm I.D.)

Securing Clip

8.5mm Ø O.D. 21.5mm Ø O.D. to fit

Overflow Pipe

to a 21.5mm overflow tee piece the branch must be
vertical ± 10° (Fig. C).
3.	Feed the pipe through the grommet in the rear
panel and connect to the drain system.
4.	The 10mm pipe can be routed to a maximum of 3
metres vertically and then discharge via gravity or be
routed horizontally (Fig. A). A combination of vertical
and horizontal runs is permissible.
5.	The pipe must be supported, either using suitably

Termination via internal discharge branch e.g sink waste - downstream

Direct Connect Fitting	Pipe must terminate		Branch of Tee to be
	above water level but	10°	± 10° from vertical
	below surrounding surface		10°

Sink

spaced clips or run within larger diameter pipe. When

using clips take care not to deform the pipe.

6. When routing the pipe through a wall it must be

suitably sleeved. Also the pipe must not be exposed to

sources of heat, and should be protected in locations

where it may be damaged.

7. The pipe should be routed so that any sharp bends,

dips and loops are avoided. A minimum radius of

100mm is recommended for any bends. No slope is

Fig. C

From Boiler

necessary and air breaks are not required on the

pumped part of the condensate run.

Termination to an internal soil and vent pipe

Direct Connect Fitting

From Boiler

Min. 450mm

8.If the boiler is fitted in an unheated location the entire length of condensate pipe should be treated as external, and run within insulated larger diameter pipe.

9.Ensure that the condensate can discharge freely (without blockage or restriction of the pipe) into the drain.

Fig. D	10. Examples are shown of condensate pipe methods
	of termination:-

Termination to a drain or gully

From Boiler

Fig. E

32© Baxi Heating UK Ltd 2011

Pipe must terminate above water level but below surrounding surface

Termination to a purpose made soak-away

500mm Min

From Boiler

Holes in the soak- away must face away from the building

Fig. F

i)via an internal discharge branch (e.g. sink waste) - Fig. B.

ii)to an internal or external soil and vent pipe - Fig. C.

iii)to a drain or gully - Fig. D. Ensure that the condensate can discharge freely (without blockage or restriction of the pipe) into the drain.

iv)to a soakaway - Fig. E.