Pre-Installation
Greenstar 8000 Life – 6720883865 (2019/02)
24
Fig. 32 Disposal into rain water down pipe
[1]
Condensate discharge from appliance
[8]
Pipe work transition
[9]
Insulate and increase pipe size
[10] External rain water pipe to foul water
[11] External air break
[12] Air gap
[13] Strap-on fitting
[14] 43mm 90° male/female bend
[20] Rain water hopper
Open drain or gully
Figure 33
Where the pipe terminates over an open drain or gully:
• Refer to following example to dispose of condensate to an open drain
or gully.
• The pipe should terminate below the grating level, but above water
level, in order to minimise “wind chill” at the open end.
• The use of a drain cover (such as those used to prevent blockage by
leaves) may offer further protection from wind chill.
Fig. 33 Disposal to open drain or gully
[1]
Condensate discharge from appliance
[8]
Pipe work transition
[9]
Insulate and increase pipe size
Condensate soak away considerations
Before deciding to use a purpose-made soak away the history of the
locality and the ability of the surrounding area to disperse the
condensate should be taken into account, e.g. areas prone to flooding
and ground with a high clay content can result in an increased risk of
freezing causing the condensate pipe to become blocked with ice and
the boiler to shut down,
Although it is possible to increase the size of the soak away and the area
with limestone chippings in clay soil areas, if the clay content is high and
prevents effective dispersal of the condensate then a soak away may not
be a suitable means of condensate disposal and an alternative method
should be used.
Condensate soak away with external air break
Figure 34
• Refer to following example to dispose of condensate to a soak away.
• The condensate soak away must be sited at least 500mm away from
building footings.
• The condensate drainage pipe may be run above or below the ground
to the soak away. The following example shows drainage pipe run
above ground.
• The soak away must use a minimum of a 100mm Ø plastic tube with
two rows of three 12mm holes on 25mm centres and 50mm from the
bottom of the tube. The holes must face away from the house.
• The tube must be surrounded by at least 100mm of limestone
chippings to a depth of 400mm.
• An air break must be installed in the external pipe work as shown to
avoid an airlock during ground flooding/adverse weather conditions
which could prevent the condensate from discharging.
Minimum hole size for the condensate soak away must be 400mm deep
by Ø 300mm.
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0010012784-002
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