Condensate Pipework - Worcester GREENSTAR 25CDi GC Instruction Manual

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25mm
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400mm
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M
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6720611 927 - 03.10
Internal sink/washing machine
drain
2 Internal waste drainage system
3 Soil/vent stack
4 External drainage system
5 External condensate absorption
point
A - Condensate from boiler
8 - Sink
C - 22 mm 0 plastic condensate pipe
D Gulley
E - Internal soil and vent stack
F - Serviceable waste trap (75 mm min)
G - 300 mm x 100 mm 0 sealed plastic
tube
H - Ground level
J Drainage holes 50 mm from base of
tube (12 mm 0 al 25 mm centres)
facing away from building
K - Limestone chippings
L Outside wall
M,O·
Drain pipe
N-
External drain
CONDENSATE PIPEWORK
CONDENSATE PIPEWORK:
• The condensate pipe must be a minimum of
22 mm 0 plastic pipe.
• The condensate pipework must fall at least
50 mm per metre towards the outlet and
should take the shortest practicable route.
• The
pipework must follow one of the oplions
shown opposile into an internal serviceable
trap (min. 75 mm) such as a sink/washing
machine) and discharge direct into a vent stack
(E) min.
450
mm above pipe inver! or into a gul ­
ley (O) below ground bul above the water level.
• Wherever possible the condensate dis ­
charge pipe work should be routed and ter­
minated internally. Should this not be possi ­
ble, and the only available route is external,
the following conditions should be
observed:
Pipe work length should be kept to a
minimum and the route as vertical as
possible.
Where pipe work could be subjected to
extreme cold or wind chill, a weather
proof insulation should be used.
Altematively the condensate pipework
could be increased to a minimum 32 mm
without the requirement 10 insulate.
IMPORTANT: Ensure there are no block­
ages in the pipe run.
PRESSURE RELIEF PIPEWORK
IMPORTANT: The pressure relief valve is a
safety device for the boiler and if activated
may discharge boiling water or steam
through the relief valve drain pipe.
Care should be taken when siting the out­
let pipe so that it does not cause an
obstruction or discharge above a window,
entrance or other public access where it
could cause a hazard.
• The pressure relief drain pipe (M,O) from
the boiler should be at least 15 mm diameter
copper pipe and run downwards away from
any electrics or other hazard, preferably to
an external drain or soakaway.
• Pipe (M) should be finished with a partial
bend, near the outlet to face the external
wall (as shown) to help prevent freezing.
• Use waterproof pipe insulation in exposed
positions and for external pipework.
INSTALLATiON & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH GR£ENSTAR 25COV3OCD'137CDil42 COi
~ORCESTER
CONDENSATE PIPEWORK
672C 613 700. (2006/' 1)
Bosch Group