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SAFETY
Your C-Warm water storage heater is
part of an unvented ('closed')
pressurised water system. Most domestic
systems in the UK are vented to
atmosphere ('open'). In continental
Europe and elsewhere unvented
domestic systems are the normal type.
With proper protection against
overheating, unvented systems present
no hazard to the user. Safety
WATER QUALITY
C-Warm heaters are designed for use
with clean, fresh, drinkable water. Salty
or heavily chlorinated water is more
CAN I USE A C-WARM STORAGE HEATER TO HEAT SEA WATER?
Copper is moderately resistant to
corrosion in hot sea water, so the heater
itself can be used with sea water,
though its working life may be
ESSENTIAL PRECAUTIONS
●
Fit a C-Warm double-protected electric immersion heater. See page 12
●
The temperature/pressure relief valve supplied with your C-Warm water
storage heater MUST be fitted in the heater.
in the event of overheating due to thermostat failure in an electric
-
immersion heater, the relief valve will open before the water can boil,
eliminating the risk of a sudden release of large amounts of scalding
water and steam.
the relief valve protects the storage heater itself from excessive pressure
-
and possible damage caused by hot water expansion or by failure of
the pressure switch on the pump.
Some additional precautions are noted in the text. These precautions are
marked as shown:
precautions are required by law for
unvented systems installed in houses in
the UK. The requirements are set out in
Building Regulations and local Bye-laws.
Although no such regulations exist (at
the time of printing) for unvented
systems in boats, these instructions
describe and recommend precautions
that comply with UK law for domestic
systems.
corrosive than pure water, and the
working life of the heater and its fittings
may be shortened.
shortened. Because the temp/pressure
relief valve may corrode, C-Warm is not
recommended for sea water use with an
electric immersion heater.
4
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