Fitting The Appliance - Worcester ZWBR 7-28 HE plus Installation And Servicing Instructions

Condensate drain
Prepare the condensate discharge system. Refer to
fig. 11. The condensate drainage pipe should be a
standard drain pipe material , i . e. PVC, PVC-U, ABS
etc. and should be at least 22 mm in diameter.
A siphon with a 75 mm condensate seal is fitted within
the appliance.
A connection to an internal drain is recommended.
Any external drain pipe should be insulated to prevent
freezing.
The connection of a condensate pipe to a drain may be
subject to local building regulations.
For more information refer to the CIBSE Guide,
BS5546 and the Building Regulations.
Fig. 11 Position of the condensate drain
6 720 610 597 GB (01.07)
3.7
y Remove packing, taking care to observe the instruc-
tions on the packing.
y Lie the boiler on its back.
Removing the outer case
i
y Remove retaining screw on right hand side (1.).
y Press both catch levers backwards (2.).
y Lift off the top fixing lugs and slide case forwards and
remove (3.).
6 720 610 602 - 03.1O
Fig. 12
Fixing the appliance
y Fit the washers onto the gas and water connections.
y Lift the boiler onto the wall-mounting frame. The lugs
pass through the rectangular holes in the boiler back
panel.
y Take care not to disturb the washers on the connec-
tions.

Fitting the appliance

Benchmark: For optimum performance
after installation, this boiler and its asso-
ciated central heating system must be
flushed in accordance with the guide-
lines given in BS5793:1992 "Treatment
of water in domestic hot water central
heating systems".
The outer case is secured against unau-
thorised removal by one screw (electrical
safety) at the right side.
Always secure the outer case with this
screw again after refitting.
Installation
15