Condensate Pipework - Bosch WORCESTER GREENSTAR 25CDi Instruction Manual

CONDENSATE PIPEWORK

INSTALLATION & SERVICIN INSTRUCTIONS FOR WORCESTER BOSCH
CONDENSATE PIPEWORK
CONDENSATE PIPEWORK:
• The condensate pipe must be a minimum of
22mm0 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 options
shown opposite 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 invert or
into a gulley (D) below ground but above
the water level.
• Use waterproof pipe insulation in exposed
positions and for excessive runs of exter ­
nal pipework (over 3 metres).
IMPORTANT: Ensure there are no block ­
ages in the pipe run.
1 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
B - 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 at 25 mm centres) facing away
from building
K - Limestone chippings
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.
L - Outside wall
M, O - Drain pipe
N - External drain
^WORCESTER
REENSTAR 25CDÍ/30CDÍZ35CDI/40 C0I
6 720 611 927b (04/05)
Bosch roup