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4

3

Slimline 

Series

Model

: PRT-E

The way to set and use your programmable room thermostat is to find the lowest 
temperature settings that you are comfortable with at the different times you have 
chosen, 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 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.

You are able to temporarily adjust the heating program by overriding or using the 
temperature hold feature.  These features are explained further on pages 15 and 16 
of this manual.

Programmable 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 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. 

A programmer allows you to set “On” and “Off” periods to suit your own lifestyle. 
A room thermostat 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.

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 
different temperatures in your home at different times of the day (and days of the week) 
to meet your particular needs and preferences.

Setting a programmable 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 and size 
of the floor heating system.

Similarly reducing the temperature setting does not affect 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.

Summary of Contents for PRT-E1

Page 1: ...1 Model PRT E Model PRT E...

Page 2: ...le of Contents What is a Programmable Room Thermostat Installation Procedure LCD Display Operating Mode Setting the Clock Temperature Display Setting the Comfort Levels Locking the Thermostat Setting...

Page 3: ...working properly What is a Programmable Room Thermostat A programmable room thermostat is both a programmer and a room thermostat A programmer allows you to set On and Off periods to suit your own lif...

Page 4: ...bottom face of the thermostat Step 2 Place the thermostat front somewhere safe Terminate the thermostat as shown in the diagram on page 26 of this booklet Step 3 Screw the thermostat back plate secure...

Page 5: ...re limit set on feature 09 6 Temperature Hold When a Temp Hold is active HOLD FOR and the remaining time period is displayed 7 Set Indicates when changes are being made to programs or temperature set...

Page 6: ...4 main operating modes Select the mode that best suits your needs Mode 00 or 02 MUST NOT be used to control electric underfloor heating Mode 01 or 03 default with floor sensor option must be used Pres...

Page 7: ...nds For 7 Day programming each day can have 4 different comfort levels To program comfort levels press Clock once For 7 Day programming only Mon is displayed in the day indicator field For Weekday Wee...

Page 8: ...er the required WAKE time Press H to confirm settings Use the Up Down keys to enter the required WAKE temperature Press H to confirm settings You will now see LEAVE displayed on screen Repeat the prog...

Page 9: ...see the Hold For indication is displayed on screen The time will countdown the set duration and then revert to the normal program To cancel temperature hold follow the same steps but reduce the Hold t...

Page 10: ...ay For example if you set a holiday period on Friday for 2 days Saturday will be counted as the first day and the thermostat will revert back to the programmed schedule at 00 00 on Monday The holiday...

Page 11: ...he range is 07 17 C The default is 12 C and is suitable for most applications Feature 05 Output Delay To prevent rapid switching an output delay can be entered This can be set from 00 15 minutes The d...

Page 12: ...Feature 09 Floor Temp Limit This function is available when feature 08 is set to 03 or 04 You can set a floor limiting temperature between 20 45 C 28 C is the default Feature 10 Optimum Start Optimum...

Page 13: ...le 01 02 03 04 05 06 07 08 09 10 11 12 FEATURE Temperature Format Switching Differential Frost Mode Frost Protection Temperature Output Delay Communications ID No Up Down Temperature Limit Sensor Sele...

Page 14: ...mplete Factory Reset The thermostat has a reset function to restore all settings to their factory defaults To perform a factory reset follow these steps Press and hold the Power button to turn the the...

Page 15: ...on Call our support team on 44 0 1254 669090 Or view technical specifications directly on our website www heatmiser com PDF FAQ Heating Professionals Request a copy of our product installation guide c...

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