ESI ESRTE2 User manual
ESRTE2
Electronic Room
Thermostat
User Instructions
Thank you for choosing ESi Controls.
All our products are tested in the UK so we are
confident this product will reach you in perfect
condition and give you many years of service.
However, for additional peace of mind, we
recommend you register your product online at
www.esicontrols.co.uk/warranty for your
extended warranty.
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User Instructions
What is a Room Thermostat?
An explanation for householders 4
Setting the Temperature 5
Contents
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An explanation for householders
A room thermostat simply switches the heating system on
and off based on room temperature. It works by sensing
the air temperature, switching on the heating when the air
temperature falls below the thermostat setting and switching
it off once this set temperature has been reached.
Turning a room thermostat to a higher setting will not make
the room heat up any faster. How quickly the room heats up
depends on the design of the heating system, for example,
the size of the boiler and radiators. Neither does the setting
affect how quickly the room cools down. Turning a room
thermostat to a lower setting will result in the room being
controlled at a lower temperature, and saves energy. The
heating system will not work if a time switch or programmer
has switched it off. The house insulation quality is a key factor
in heating control.
The way to set and use your room thermostat is to find the
lowest temperature setting that you are comfortable with,
and then leave it alone to do its job. The best way to do this is
to set the room thermostat to a low temperature – say 18° C
and then turn it up until you are comfortable with the
temperature (20°C is the usual preferred set point). You won’t
have to adjust the thermostat further. Any adjustment above
this setting will waste energy and cost you more money.
If your heating system is a boiler with radiators, there will
usually be only one room thermostat to control the whole
house (but building regulations Part L require houses above
What is a Electronic Room
Thermostat?
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a certain size to have more than 1 heating zone). Room
thermostats need a free flow of air to sense the temperature,
so they must not be covered by curtains or blocked by
furniture. Nearby electric fires, televisions, wall or table lamps
may prevent the thermostat from working properly. Also keep
out of direct sunlight.
Setting the Temperature
To set the temperature, turn the dial until the desired
temperature is shown at the temperature mark (the LED).
When the system is calling for heat, the red LED light will turn
on. When the system is not calling for heat, the LED light will
turn off.
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We are continuously developing our products to
bring you the very latest in energy saving technology
and simplicity. However, should you have any
questions setting up your controls please email us at
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WARNING: Interference with sealed parts renders the
guarantee void.
In the interests of continuous product improvement we reserve
the right to alter designs, specifications and materials without
prior notice and cannot accept liability for errors.
Version 6.10.2
© ESi Controls Limited 2017
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