24
SECTION 5 - INSTALLATION INSTRUCTIONS
C
ONDENSATE DRAIN - CONT’D.......
Visible air break
Condensate pump
(Install in accordance with manufacturers instructions)
Min Ø 19 mm
Internal pipe
Boiler
with 75 mm
sealed
condensate
trap
75 mm
Min Ø 19 mm
Internal pipe
Min Ø 30 mm
Internal pipe
Air gap
External air
break
Combined foul/
rain water drain
Terminated
and cut at 45º
43 mm 90º
male/ female
bend
Water/
weather proof
insulation
68 mm Ø PVCU
Strap on fitting
Boiler
with 75 mm
sealed
condensate
trap
Minimum
connection
height up to 3
storeys
Soil & vent stack
≥ 450 mm
Boiler
with 75 mm
sealed
condensate
trap
Min Ø 19 mm
Internal pipe
Min Ø 30 mm
Internal pipe
Water/weather
proof insulation
Figure 3 - Connection of a Condensate Pump Typical
Method (see manufacturers detailed instructions)
Figure 4 - Connection of Condensate Drainage Pipe to
External Soil & Vent Stack
Figure 5 - Connection of a Condensate Drainage Pipe to an
External Rainwater Downpipe (only combined foul/rainwater
drain)
Boiler
with 75 mm
sealed
condensate
trap
Min Ø 19 mm
Internal pipe
Min Ø 30 mm
Internal pipe
Water/Weather
proof insulation
Max 3 m external
pipework
Limestone
chippings
≥ 500
≥ 300
≥ 25
2 rows of three Ø12 mm holes
25 mm centres, 50 mm from
the bottom of the tube, facing
away from the house
Terminated
and cut at 45º
Figure 6 - Connection of a Condensate Drainage Pipe to an
External Purpose Made Soak Away.
Boiler
with 75 mm
sealed
condensate
trap
Min Ø 19 mm
Internal pipe
Minimum
connection
height up to 3
storeys
Soil & vent stack
≥ 450 mm
Sink/basin/
bath or
shower
Boiler
with 75 mm
sealed
condensate
trap
Min Ø 19 mm
Internal pipe
Internal soil & vent stack
≥ 100 mm
Figure 1 - Connection of Condensate Drainage Pipe to
Internal Soil & Vent Stack
Figure 2 - Connection of a Condensate Drainage Pipe
Downstream of a Sink, Basin, Bath or Shower Water Trap to
Internal Soil Vent Stack