7 Installation
20 Installation and maintenance instructions MicraCom 0020289288_02
7.5.4 Internal termination into combined sink
waste
Preferred option for external termination
7.5.5 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
7.5.6 Internal termination downstream of sink
waste
Open end of pipe direct into gulley below ground level but
above water level
Susceptible to siphonage, must terminate in a gulley
7.5.7 External termination into rain water down
pipe
NB only combined foul/rainwater drain
7.5.8 Additional methods of introducing air breaks
1 Air break
2 Using a tundish
3 Using a pipe
7.5.9 Connection of condensate pump
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