ESI ESCTDE Gebruikers- en installatiehandleiding - Pagina 5
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What is a Cylinder Thermostat?
...An explanation for householders
A cylinder thermostat switches on and off the heat supply from the
boiler to the hot-water cylinder. It works by sensing the tempera-
ture of the water inside the cylinder, switching on the water
heating when the temperature falls below the thermostat setting, and switching it
off once this set temperature has been reached.
Turning a cylinder thermostat to a higher setting will not make the water heat up
any faster. How quickly the water heats up depends on the design of the heating
system, for example, the size of the boiler and the heat exchanger inside the
cylinder.
The water heating will not work if a time switch or programmer has switched it off.
And the cylinder thermostat will not always switch the boiler off, because the
boiler sometimes needs to heat the radiators.
Cylinder thermostats are usually fitted between one quarter and one third of the
way up the cylinder. The cylinder thermostat will have a temperature scale marked
on it, and it can be adjusted to the chosen temperature, then left to do its job. The
thermostat must be designed to kill off harmful bacteria in the water. Raising the
temperature of the stored hot water unnecessarily results in wasted energy and
increases the risk of scalding.
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