General Notes - Worcester ZWB 7-25 HE combi Users Instructions And Customer Care Manual

Combustible materials
B Do not store or use any combustible materials (paper, thin-
ners, paints etc.) in the vicinity of the appliance.
Health and safety
B This appliance contains no asbestos products.
B There is no potential hazard due to the appliance being electri-
cally unsafe.
B There are no substances used in the construction that are a
potential hazard in relation to the COSHH Regulations (Con-
trol of Substances Hazardous to Health Regulations 1988).
Combustion Air/Ambient Air
B Keep combustion air/ambient air free of corrosive substances
(e.g. halogenated hydrocarbons which contain chlorine or flu-
orine compounds). In this way corrosion can be prevented.
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General notes

To get the best from your appliance please read these instruc-
tions carefully.
Sealed heating systems
The appliance is fitted to a sealed heating system which is pre-
pressurised. Your installer will tell you of the minimum and maxi-
mum pressure which must be indicated on the pressure gauge.
Check regularly that the pressure is maintained and contact your
installer or maintenance engineer if there is a permanent signifi-
cant drop in the pressure. If the system loses pressure it should
be repressurised and the cause of the fall investigated.
Central heating systems
During the first few hours of operation of the central heating sys-
tem, check that all radiators are being heated at an even rate. If
the top of a radiator is at a lower temperature than the bottom then
it should be vented by releasing air through the venting screw at
the top of the radiator. Ask your installer to show you how this is
6 720 610 577 GB (03.02)
General notes
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