Vaillant ecoTEC exclusive 627 Installation And Maintenance Instructions Manual page 19

discharge pipe as there is already a trap inside the boiler.
Fitting an extra trap may cause the boiler siphon to work in-
correctly. Refer to BS5546 or BS6798 for further advice on
disposal of boiler condensate.
7.8.1.1 Direct Connection to internal soil and vent
stack
Preferred option
7.8.1.2 Direct connection to external soil and vent
stack
≤ 3 m
7.8.1.3 External termination to gulley or hopper
≤ 3 m
Best practice
0020193966_04 ecoTEC exclusive Installation and maintenance instructions
Ø22mm
Ø22mm
Ø 32mm
Ø22mm
Ø 32mm
7.8.1.4 Internal termination into combined sink
waste
≥ 3 m
Preferred option for external termination
7.8.1.5 External termination into soakaway
Ø32mm
≤ 3 m
< 500 mm
1 Ground (either/or)
2 Seal
3 Plastic tube,
100 mm diameter
Least preferred option, must not terminate in rain water drain
7.8.1.6 Internal termination downstream of sink
waste
≤ 3 m
100mm
Ø22mm
Ø32mm
1
100 mm
2
3
4
5
6
4 Bottom of sealed tube
5 Limestone chippings
6 Hole depth 400 mm
minimum
Ø22mm
100mm
Ø32mm
Ø12
25
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