Technical data

13
13
75 mm
min.
Condensing
boiler
22mm dia.
plastic pipe
75mm sink
waste trap
Open end of
condensate
drainage pipe
directly into
gully below
grating but
above water
level
Visible air break
at plug hole
100mm
Soil & vent stack
22mm dia.
Minimum
450mm
and up to
3 storeys
Condensing
boiler
Invert
Sink with
integral
overflow
Insulation
or increase
pipe size
22mm dia. plastic
condensate drainage
pipe running through
the external wall
External
air break
Air gap
External rain
water pipe into
foul water sewer
68mm dia.
PVC-u strap
on fitting
43mm 90°
M & F bend
Condensing
boiler
Insulation or
increase pipe size
Condensate drainage
pipe can be run above
or below ground
25mm
Bottom of
tube sealed
Limestone
chippings
Hole depth
400mm min.
by 300mm dia.
Drainage holes
22mm dia. condensate
drainage pipe, max external
length 3 metres
Diameter 100mm
min. plastic tube
500mm min.
Insulation or
increase pipe size
Internal sink/washing machine drain
75 mm
min.
Condensing
boiler
22mm dia.
plastic pipe
75mm sink
waste trap
Open end of
condensate
drainage pipe
directly into
gully below
grating but
above water
level
Visible air break
at plug hole
100mm
Soil & vent stack
22mm dia.
Minimum
450mm
and up to
3 storeys
Condensing
boiler
Invert
Sink with
integral
overflow
Insulation
or increase
pipe size
22mm dia. plastic
condensate drainage
pipe running through
the external wall
External
air break
Air gap
External rain
water pipe into
foul water sewer
68mm dia.
PVC-u strap
on fitting
43mm 90°
M & F bend
Condensing
boiler
Insulation or
increase pipe size
Condensate drainage
pipe can be run above
or below ground
25mm
Bottom of
tube sealed
Limestone
chippings
Hole depth
400mm min.
by 300mm dia.
Drainage holes
22mm dia. condensate
drainage pipe, max external
length 3 metres
Diameter 100mm
min. plastic tube
500mm min.
Insulation or
increase pipe size
Soil and vent stack
75 mm
min.
Condensing
boiler
22mm dia.
plastic pipe
75mm sink
waste trap
Open end of
condensate
drainage pipe
directly into
gully below
grating but
above water
level
Visible air break
at plug hole
100mm
Soil & vent stack
22mm dia.
Minimum
450mm
and up to
3 storeys
Condensing
boiler
Invert
Sink with
integral
overflow
Insulation
or increase
pipe size
22mm dia. plastic
condensate drainage
pipe running through
the external wall
External
air break
Air gap
External rain
water pipe into
foul water sewer
68mm dia.
PVC-u strap
on fitting
43mm 90°
M & F bend
Condensing
boiler
Insulation or
increase pipe size
Condensate drainage
pipe can be run above
or below ground
25mm
Bottom of
tube sealed
Limestone
chippings
Hole depth
400mm min.
by 300mm dia.
Drainage holes
22mm dia. condensate
drainage pipe, max external
length 3 metres
Diameter 100mm
min. plastic tube
500mm min.
Insulation or
increase pipe size
External air break when using a foul water down pipe
75 mm
min.
Condensing
boiler
22mm dia.
plastic pipe
75mm sink
waste trap
Open end of
condensate
drainage pipe
directly into
gully below
grating but
above water
level
Visible air break
at plug hole
100mm
Soil & vent stack
22mm dia.
Minimum
450mm
and up to
3 storeys
Condensing
boiler
Invert
Sink with
integral
overflow
Insulation
or increase
pipe size
22mm dia. plastic
condensate drainage
pipe running through
the external wall
External
air break
Air gap
External rain
water pipe into
foul water sewer
68mm dia.
PVC-u strap
on fitting
43mm 90°
M & F bend
Condensing
boiler
Insulation or
increase pipe size
Condensate drainage
pipe can be run above
or below ground
25mm
Bottom of
tube sealed
Limestone
chippings
Hole depth
400mm min.
by 300mm dia.
Drainage holes
22mm dia. condensate
drainage pipe, max external
length 3 metres
Diameter 100mm
min. plastic tube
500mm min.
Insulation or
increase pipe size
External condensate absorption point (unsuitable for clay soil types)