Access to the heater is not normally needed on a day-to-day basis, but
300mm clearance to the front of the water heater sould be kept for
servicing and maintenance
A cold water supply pressure between 1 and 5.5 bar is required (if the
mains pressure is above 5.5 bar a pressure reducing valve will need
to be installed). Please note that turning down the stop-cock will
reduce flow not pressure.
The outlet pressure from the reducing valve (if supplied) is 3.5 bar.
A 240 VAC; 3 kW single phase electrical supply is required.
Position the heater against the wall and mark the position of the hooked
wall bracket. Fasten the wall bracket to wall using suitable screws and wall
plugs (ensure that wall is suitable to support the unit, allowing for the extra
weight of water when it is full). Hang the heater on the bracket making sure
that the heater is pulled well down on to the bracket, if necessary by forcing
the hooks into the foam insulation.
b) PLUMBING
WARNING: The outlet from temperature and pressure relief
valve/pressure relief valve must not be for any
other purpose.
Take great care not to allow any swarf into the pipe work or fittings, as this
might impair the operation of the safety valve(s).
The water connection may be carried out as per the following:
1) Using the feed pipe to accommodate expansion
(Schedule 2, Section 6: Paragraph 15 of the Water
Supply (Water Fittings) Regulations 1999 and the Water
Byelaws 2000, Scotland) (Fig. 1).
Do not fit any stop-cocks or non-return valves within the distance required for
expansion. If a pressure reducing valve is needed, due to a mains pressure of
over 5.5 bar, it must be fitted outside of the expansion distance. The distances
quoted are for 15 mm pipe these can be approximately halved for 22 mm pipe
to shorten the distance required for expansion.
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