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Connecting the cold water inlet and
the
hot
water
pressurised water system
C-Warm heaters with ½" BSP
connections require 15mm bore
pipework; models with ¾" BSP
connections require 22mm pipework.
See page 18 - 20 for connection sizes.
Fitting the temperature-and-pressure
relief valve
See pages 18 to 20 for the correct
location of the relief valve on your
heater.
Ensure that the coloured knob on the
valve is in an accessible position. The
discharge port of the valve must point
downwards, with a suitable hose to
allow hot water or steam to escape
safely to the bilge or another suitable
area.
The relief valve supplied with the heater
is non-adjustable and is pre-set to lift at
3bar (44psi) or at 90°C.
Marine pressurised water pumps
normally have pressure switches set to
cut out below 2.5bar (36psi). Check
that your pressure switch cuts out at or
below this pressure. Use of a pressure
switch cutting out at or close to 3bar
(44psi) could lead to continuous
discharge of water through the relief
valve.
outlet
into
your
C-Warm CONNECTION KITS contain
connectors suitable for Hep
push-fit pipework.
The cold water inlet line should be
•
fitted with a drain cock, close to the
heater, to allow drainage if
maintenance becomes necessary,
and to avoid the risk of freezing in the
winter.
WARNING
The temperature-and-pressure-
relief valve is essential for the safe
operation of your C-Warm heater.
Failure to fit the relief valve, or any
alteration to or interference with its
function, or fitting of any valve
other than that supplied with the
heater, carries a risk of serious
personal injury or death in the
event of overheating. It will also
invalidate the supplier's warranty.
11
o (ACORN)
2
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