iQe RT021 User And Installation Instructions Manual

Battery Operated Electronic Room Thermostat

with TPI Temperature Control Software

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RT021

User and Installation Instructions

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The RT021 is a battery powered electronic room
thermostat designed to provide optimum comfort
with close control of the energy used to heat the
home.

The RT021 will only operate when 2 x AAA
batteries have been fitted and the thermostat is
wired into your central heating system.

Installation and connection of the
must be carried out by a suitably qualified
person.

WARNING: ISOLATE MAINS SUPPLY BEFORE

COMMENCING INSTALLATION.

RT021

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A room thermostat simply switches the heating system
on and off as necessary. 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 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.

FOR THE USER

What is a room thermostat? ... an explanation
for householders

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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 by one
degree each day until you are comfortable with the
temperature. 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 you can have different temperatures
in individual rooms by installing thermostatic radiator
valves (TRVs) on individual radiators. If you don’t have
TRVs, you should choose a temperature that is
reasonable for the whole house. If you do have TRVs,
you can choose a slightly higher setting to make sure
that even the coldest room is comfortable, then prevent
any overheating in other rooms by adjusting the TRVs.

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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.

The thermostat uses the latest control
technology to provide extremely accurate temperature
control which will help to keep your energy usage as
low as possible without affecting your comfort levels. In
fact comfort levels may well be improved as the control
accuracy should ensure that the room does not
‘overheat’ before switching off.

RT021

ADDITIONAL USER INFORMATION

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The display will show the required
temperature setting and can be adjusted in
increments of 1°C. To adjust the required
temperature setting turn the dial anti
clockwise to decrease it and clockwise to
increase it.

USER INSTRUCTIONS

When the thermostat is in the ‘call for heat’ condition a
flame symbol will appear in the display. Further
information on how the thermostat operates is
contained in the ‘Explanation for householders’ that
precedes this section.

Pressing the temperature setting dial will
allow the user to check the current room
temperature which will be displayed for
approx 7 seconds before returning to the
set temperature.

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Battery Replacement

The runs on 2 x type AAA (Alkaline)
non rechargeable batteries and is designed
to give a battery life of approximately two
years.

RT021

When the batteries are nearing the end of their life a low
battery symbol will appear in the display and the
batteries should be changed within a few days. If the
batteries are not changed at this point eventually a ‘LO’
battery message flashes intermittently in the display
and if this happens the batteries should be changed
immediately.

To change the batteries it is necessary to remove the
thermostat from the wall. To do this first undo the two
captive screws at the base of the thermostat and swing
the thermostat up and away from the wall plate.

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