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REGULATING THE TEMPERATURE OF THE ENGINE HEATED WATER
C-Warm storage heaters are highly efficient, and the stored water can reach
almost the same temperature as the water in the engine cooling circuit. (90°-95°C).
Domestic hot water is not normally hotter than 60°
You can limit the temperature of the hot
water supply by:
l fitting a C-Warm adjustable thermostat,
model CW276A. This also avoids the
possibility of tripping the high
temperature cut-out in a C-Warm
double-protected electric immersion
heater if the stored water temperature
reaches 90°C. Do not use on direct
cooled engines
l fitting a blender valve in the hot water
discharge line, to add a controllable
proportion of cold water. This method
has the potential advantage of
extending the capacity of the C-Warm
heater (X litres of water at 85°C plus Y
litres of cold water = X + Y litres of water
at 55°C
)
MAKING SURE YOUR WATER STAYS HOT
C-Warm's efficient insulation will keep your stored water hot for many hours after
the engine has stopped
l Long pipe runs can delay the arrival of hot water at the hot taps, wasting water.
Heat loss can be minimised by insulating the hot water pipes.
l Occasionally a thermo-syphon will start of its own accord in the engine cooling
circuit, silently extracting heat from your stored water and warming the
(stationary) engine! This is an unlikely event, but if it does happen, contact your
C-Warm supplier for advice.
TOO HOT? TOO COLD? A HEALTH NOTE
Legionella bacteria occur naturally in many water systems. People exposed to them can develop
Legionnaire's disease.
Water temperature
Above 60ºC
20º to 45ºC
Below 20ºC
Store hot water at 60º or above. Use a blender valve in the hot water supply line to add cold water
in controlled amounts.
Risk
Can scald, but Legionella bacteria cannot survive
Legionella multiply
Legionella will not multiply but remain a potential threat
14
C.
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