Heatmiser PRT-B User Manual
1
Model: PRT-B
Model: PRT-B
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Battery Series
2Model: PRT-B
Model: PRT-B
Battery Series1
Table of Contents
1
2
3-4
5-6
7-8
9
10
11-12
13
14
15-16
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18
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Product Image
Table of Contents
What is a Programmable
Room Thermostat?
Installation Procedure
Installing the Batteries
Replacing the Batteries
Pairing with the RC1-W Receiver
LCD Display
Setting the Clock
Temperature Display
Setting the Comfort levels
Locking the Thermostat
Setting the Temperature
Temperature Hold
Holiday Programming
Frost Protection
Power ON / OFF
Optional Features
Re-calibrating the Thermostat
Factory Reset
Wiring Diagrams
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21
21
23-26
27
28
29-30
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Battery Series Model: PRT-B
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 1°C 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
programmable room thermostat to control the whole house. But you can have
dierent 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. The time on the programmer must be correct. Some
types have to be adjusted in Spring and Autumn at the changes between Greenwich
Mean Time and British Summer Time.
You may be able to temporarily adjust the heating program, for example, “Override”,
“Advance” or “Boost”. These features are explained in the instructions if they apply to
your specic model.
Programmable room thermostats need a free ow of air to sense the temperature,
so they must not be covered by curtains or blocked by furniture. Nearby electric
res, televisions, wall or table lamps may also prevent the thermostat from working
properly.
What is a Programmable Room Thermostat?
A programmable room thermostat is both a programmer and a room thermostat.
The programmer allows you to set “On” and “O” periods to suit your own lifestyle.
The room thermostat works by sensing the air temperature, switching on the heating
when the air temperature falls below the thermostat setting, and switching it o once
this set temperature has been reached.
So a programmable room thermostat lets you choose what times you want the heating
to be on, and what temperature it should reach while it is on. It will allow you to select
dierent temperatures in your home at dierent times of the day (and days of the week)
to meet your particular needs and preferences.
Setting a room thermostat to a higher temperature will not make the room heat up any
faster. How quickly the room heats up depends on the design of the heating system.
Similarly reducing the temperature setting does not aect how quickly the room cools
down. Setting a programmable room thermostat to a lower temperature will result in the
room being controlled at a lower temperature, and saves energy.
The way to set and use your programmable room thermostat is to nd the lowest
temperature settings that you are comfortable with at the dierent times you have
chosen, and then leave it alone to do its job.
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Battery Series Model: PRT-B
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Installation Procedure
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This battery thermostat is designed to be surface mounted.
Step 1
Carefully separate the front half of the thermostat from the back plate by placing a
small at head terminal driver into the slots on the bottom face of the thermostat.
Step 2
Mark 2 hole positions on the wall using the back plate as a positioning template.
Drill the marked positions and insert a wall plug into each hole. Terminate the
thermostat as shown in the diagrams on pages 29-30 of this booklet.
Step 3
Screw the thermostat back plate securely on the wall and t the terminal cover.
Step 4
Clip the front of the thermostat back onto the thermostat back plate.
Do
Mount the thermostat at eye level.
Read the instructions fully so you get the best from our product.
Don’t
Do not install near to a direct heat source as this will aect functionality.
Do not push hard on the LCD screen as this may cause irreparable damage.
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2
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Battery Series Model: PRT-B
Installing the Batteries
2x AAA batteries have been supplied with this thermostat.
To access the battery holder, push and release the compartment door located on
the bottom face of the thermostat.
Insert the batteries in the empty battery holder, ensuring that each battery is
orientated for the correct polarity + / - .
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Battery Series Model: PRT-B
Push the battery holder back inside the thermostat until it is secured
in its closed position.
Batteries have a xed lifespan and will need to be replaced occasionally to
ensure the thermostat operates correctly.
The thermostat will inform you when the batteries need to be replaced by
displaying the battery icon on screen.
Note: You must replace the batteries within 1 minute of removal in order to retain
the current clock and comfort level settings.
Replacing the Batteries
Battery Icon
(Flashes)
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