59
External Connections
Key
1
Boiler
2
Visible air break
3
75 mm trap
4
Visible air break and trap not required if there is a trap with a minimum condensate seal
of 75mm incorporated into the boiler.
5
Soil and vent stack
6
Invert
7
450mm minimum upto three storeys
8
Minimum internal diameter 19 mm
9
Pipe size transition point
10
Minimum internal diameter 30mm
11
Water/weather proof insulation
Figure 4 –
Connection of condensate discharge pipe to external soil and vent stack
1
2
10
5
9
4
8
3
7
6
11
October 2018 Issue 1.0
