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4

3

TouchScreen 

Series

Model

: PRT-TS / PRT-NTS

What is a Programmable Room Thermostat?

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 

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. 

You are able to temporarily adjust the heating program by overriding or using the 

temperature hold feature. These features are explained further on pages 14 and 15 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.

A programmable room thermostat is both a programmer and a room thermostat.

The  programmer allows you to set “On” and “Off” 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 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 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 & size of the 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.

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.

Summary of Contents for PRT-NTS

Page 1: ...1 Model PRT TS PRT NTS Model PRT TS PRT NTS...

Page 2: ...the Clock Temperature Display Comfort Levels Explained Clean Screen Locking the Keypad 14 15 16 17 18 19 20 21 22 23 24 25 28 Temperature Control Temperature Hold Holiday Programming Frost Protection...

Page 3: ...ains or blocked by furniture Nearby electric fires televisions wall or table lamps may also prevent the thermostat from working properly A programmable room thermostat is both a programmer and a room...

Page 4: ...ots on the bottom face of the thermostat Step 2 Place the thermostat front somewhere safe Terminate the thermostat as shown in the diagrams on pages 25 28 of this booklet Step 3 Screw the thermostat b...

Page 5: ...ad is locked 8 OFF Key Single press to enable disable frost protection or press and hold to turn off display 9 Frost Icon Displayed when the thermostat is in frost protection mode 10 Room Temp Indicat...

Page 6: ...target temperature you have set This is the current room temperature This is the temperature you are trying to achieve in your home To set the clock follow these steps Press PROG Press CLOCK Use the...

Page 7: ...r example you may want the home warm in the morning when you are getting ready for work cooler during the day when the house is unoccupied and then warmer in the evening when you are home relaxing The...

Page 8: ...all keys providing you 15 seconds to wipe the screen clean before the keys are re activated The keys under the temperature display allow you to adjust the set temperature When you press either of thes...

Page 9: ...home to the frost protection temperature setting see page 19 The thermostat will maintain this temperature for the duration of the holiday and will then automatically return to the program mode on yo...

Page 10: ...ly To turn the thermostat back ON press the ON key once Heating On Off Pressing the key once will place the thermostat in frost protect mode In this mode the thermostat will display the frost icon and...

Page 11: ...unique communication address This can be set from 01 32 Feature 07 Temperature Up Down Limit This function allows you to limit the use of the up and down keys This limit is also applicable when the t...

Page 12: ...Default Enter Value 00 15 Minutes 00 Default Enter number 01 32 00o 10o C 00o C Default Fixed on Internal Sensor Not available on this model 00 Disabled Default 01 01hr 02 02hr 03 03hr Minutes to rais...

Page 13: ...to configure the new temperature Press DONE to confirm the new temperature Press the ON key once to turn the thermostat back ON Re calibrating the Thermostat The thermostat has a reset function to res...

Page 14: ...tions wire the P L and S L directly to the boiler or if there is no system valve take A1 A2 directly to the boiler Heating Valve L P L To Boiler S L Live Neutral N PRT TS N A2 A1 230VAC L Wiring Diagr...

Page 15: ...ELDEN 9538 Connect the screen to Earth at the UH1 UH1 ZONE X ZONE X A2 A1 B Y _ A2 A1 B Y _ PRT NTS Y B A2 A1 12VDC Network RT1 RT2 PRT NTS Y B A2 A1 12VDC Network RT1 RT2 A2 B2 NO NC C NO NC C N E L...

Page 16: ...30 29 TouchScreen Series Model PRT TS PRT NTS Notes Notes...

Page 17: ...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 con...

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