Technical data

21
© Baxi Heating UK Ltd 2014
5.0 Site Requirements
5.11 Condensate Disposal Pipe Runs (cont.)
14. Ensure that the condensate can discharge freely (without
blockage or restriction of the pipe) into the drain.
15. Any part of the condensate drain system that is outside
the dwelling, or in an unheated part of it must be kept to a
minimum and be at least 32mm diameter & suitably
insulated. Any insulation outside the dwelling must be of a
material suitable for external use.
16. Examples are shown of condensate pipe methods of
termination:-
i) via an internal discharge branch
(e.g. sink waste) - Fig. 18.
ii) to an internal or external soil and vent pipe -
Fig. 19.
iii) to a drain or gully - Fig. 20. Ensure that the
condensate can discharge freely (without
blockage or restriction of the pipe) into the
drain.
iv) to a soakaway - Fig. 21.
17. Refer to BS 6798 for further details.
18. Condensate Drain Pipe ‘Trace Heating’ Elements are
available in various lengths. ‘MULTIFIT’ part nos.:-
1 metre 720644401
2 metre 720664101
3 metre 720664201
5 metre 720664401*
*Where the drain is between 3 & 5 metres a 5 metre kit can
be used and “doubled back” upon itself.
19. It is possible to fit the element externally on the
condensate drain or internally as detailed in the instructions
provided.
20. The fitting of a ‘Trace Heating’ Element is NOT a substitute
for correct installation of the condensate drain. ALL
requirements in this section must still be adhered to.
Termination via internal discharge branch e.g
sink waste - downstream
Sink
Pipe must terminate
above water level but
below surrounding surface
Fig. 18
Direct Connect Fitting
From Boiler
From Boiler
Termination to an internal soil and vent pipe
Fig. 19
Direct Connect Fitting
Min. 450mm
Pipe must terminate above
water level but below
surrounding surface
Termination to a drain or gully
Fig. 20
From Boiler
Termination to a purpose made
soak-away
Holes in the soak-away must
face away from the building
Fig. 21
From Boiler
500mm Min.