Glow-worm Energy7 Series - Page 24

7 Installation
24 Installation and maintenance instructions Energy
7
0020300877_01
You can find further information in specification "BS 6798"
for installing and maintaining gas-fired boilers with a nominal
heat input below 70 kW.
7.11.1 Condensate discharge systems
The condensate is discharged periodically in ‘slugs’ by si-
phonic action. It is not necessary to provide extra traps in the
discharge pipe as there is already a 75 mm high trap inside
the boiler. Fitting an extra trap may cause the boiler siphon
to work incorrectly. Refer to BS5546 or BS6798 for further
advice on disposal of boiler condensate.
7.11.1.1 Direct Connection to internal soil and vent
stack
Ø22mm
Preferred option
7.11.1.2 Direct connection to external soil and vent
stack
Ø22mm
Ø 32mm
≤ 3 m
7.11.1.3 External termination to gulley or hopper
Ø22mm
Ø 32mm
≤ 3 m
Best practice
7.11.1.4 Internal termination into combined sink
waste
Ø32mm
Ø22mm
≥ 3 m
100mm
Preferred option for external termination
7.11.1.5 External termination into soakaway
< 500 mm
100 mm
< 300 mm
50 25 25
< 25
25
Ø12
Ø32mm
≤ 3 m
1
2
3
4
5
6
1 Ground (either/or)
2 Seal
3 Plastic tube,
100 mm diameter
4 Bottom of sealed tube
5 Limestone chippings
6 Hole depth 400 mm
minimum
Least preferred option, must not terminate in rain water drain
7.11.1.6 Internal termination downstream of sink
waste
100mm
Ø32mm
Ø22mm
≤ 3 m