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4

3

Wireless 

Series

Model

: PRT-EW

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 18 and 19 
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-EW

Page 1: ...1 Model PRT EW Model PRT EW ...

Page 2: ...ion Procedure Installing the Batteries Replacing the Batteries Configuring the Thermostat Pairing with the RC2 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 Remote Air Sensor Wiring ...

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 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 b...

Page 4: ...shown in the diagram on page 29 Mark 2 hole positions on the wall using the backplate as a positioning template Drill at the marked positions and insert a wall plug into each hole Step 3 Screw the thermostat back plate securely on the wall 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...

Page 5: ... 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 Push the battery holder back inside the thermostat until it is secured in its closed position ...

Page 6: ...old the A button for 5 seconds The thermostat will send a signal for 1 minute and will flash the RF signal icon If pairing is successful the Comms LED on the receiver will flash Press the Power button on the thermostat once to confirm pairing If pairing is unsuccessful check feature 07 has been configured correctly To eliminate a possible signal issue reposition the thermostat closer to the receiv...

Page 7: ... overriding the program HOLD FOR and the time period are displayed 7 Set Displayed when changes are made to programs or temperature set points 8 Holiday Indicator Displayed when the programmer is in holiday mode 9 Current Temp Indicates the current sensor temperature 10 Program Cycle Indicator Displayed during programming only to show which period is being altered 11 Battery Level Indicates when t...

Page 8: ... minutes Press H to confirm settings Use the Up Down keys to set the day of the week Press A to confirm settings and return to main display Temperature Display Room Temperature Set Temperature This is the current room temperature This is the temperature you are trying to achieve in your home The temperature display information is driven by two different inputs the sensor measurement and the target...

Page 9: ...4 different comfort levels To program comfort levels press Clock once Use the Up Down keys to enter 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 programming steps for each period until complete For unused periods enter and the thermostat will ignore th...

Page 10: ... return to main display Set Temperature Set Icon Locking the Thermostat The thermostat has a keypad lock facility To activate the lock follow these steps Press and hold the A and Down keys together for 10 seconds You will see the lock symbol appear on screen To unlock repeat the steps above until the lock symbol disappears Note The keypad lock indicator is only displayed when the lock is active No...

Page 11: ...emaining Holiday The holiday function reduces the set temperature in your home to the frost protection temperature setting see page 23 The thermostat will maintain this temperature for the duration of the holiday and will then automatically return to the program schedule on your return Press H three times until you see the suitcase on screen Use the Up Down keys to enter the number of days holiday...

Page 12: ...ing be turned on whilst in frost mode the flame icon will be displayed To cancel the frost protect mode press the Power button once again Frost Mode Heating On Off The heating is indicated ON when the flame icon is displayed When the flame icon is absent there is no requirement for heating to achieve the set temperature but the thermostat remains active To turn the thermostat OFF completely press ...

Page 13: ... loss of wireless signal and in case the thermostat battery fails whilst you are away Feature 11 Up Down Temperature Limit This function allows you to limit the use of the up and down keys This limit is also applicable when the thermostat is locked and so allows you to give others limited control of the heating system Feature 12 Air Sensor Selection On this thermostat you can select which sensor s...

Page 14: ...7o 17o C 12o C Default 00 15 Minutes 00 Default 01 32 00 Disabled 01 Enabled 01 Default 00o 10o C 00o C Default 00 Built in Air Sensor 01 Remote Air Sensor 20 45o C 28o C Default 00 03 Hours 00 Default Minutes to raise by 1o C 00 Weekday Weekend 01 7 Day Programming SETTING Adjusting the Optional Settings To adjust the optional settings follow these steps Press and hold the Power button to turn th...

Page 15: ...isplayed on screen When the icons have disappeared from the screen the thermostat has been successfully reset Press the Power button once to turn the thermostat back ON Re calibrating the Thermostat If you need to re calibrate the thermostat follow these steps Press and hold the Power button to turn the thermostat OFF Press and hold BOTH the Power and Down keys together until the temperature appea...

Page 16: ...30 29 Wireless Series Model PRT EW Notes Wiring Diagram Remote Air Sensor REMOTE AIR PROBE Set feature 12 to 01 to enable the remote air probe White Wire Red Wire ...

Page 17: ...ion 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 containing detailed technical specifications for our complete product range www heatmiser com guide ...

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