Operating Instructions Model: PRT / PRT-N Version 3
Contents
1. Fri shown For 7 day programming you will see Monday e Using the Up Down arrow keys enter the required Wake time e PressH e Using the Up Down arrow keys enter the required Wake Temperature e Press H e You will now see Leave e You should repeat the programming for each period entering for unused periods Note For weekday weekend Programming the 4 comfort levels are the same for all weekdays For 7 day programming each day can have 4 different comfort levels Locking The Thermostat The thermostat has a key lock facility To enable follow these steps e Press and hold the A and Down Key for 10 seconds e You will see the lock symbol appear e To unlock repeat the steps above Temperature Hold The temperature hold function is ideal for parties or when you will be going out for a number of hours It allows you to hold a temperature for a desired period Press H Using the Up Down arrow keys enter the required hold time Press H Using the Up Down arrow keys enter the required hold temperature e Press A to accept You will see the Hold indication is displayed which will countdown the hold duration To cancel reduce the Hold time to 00 hours Temperature Set Using the Up or Down arrow keys allows you to adjust the set temperature When you press either of these keys you will see the word SET and the desired temperature Press A to accept 10 Holiday The Heatmiser PRT has a holi2. the setting value Use the clock button to cycle through the features Use the Up Down keys to change the setting Press A to accept and store af wo Feature Table Feature Description Setting 01 Temperature Format 00 C 01 F 02 Switching Differential 01 03 C 01 C Default 03 Frost Mode 00 Enabled 01 Disabled 00 Default 16 Feature Table continued 04 Frost Temperature 07 17 C 12 C Default 05 Output Delay 00 15 Minutes 00 Default 06 Communication ID Set Unique Comms Address 01 32 07 Up Down Temp Limit 00 10 C 00 C Default 08 Sensor Selection Built in sensor 09 Floor Limiting Sensor Not used on this model 10 Optimum Start 00 03 00 hours default 11 Rate of Change Information only 12 Weekday Weekend 00 Weekday Weekend 01 7 day programming 17 Re calibrating the thermostat If you need to re calibrate the thermostat follow these instructions Press and hold the power button to turn the thermostat off Press and hold BOTH the power and down buttons until the temperature appears on the screen Use the up down buttons to set the new temperature Press A to accept Press the power button once to turn the thermostat back on Orc mc 18 PRT 240V SWITCHING MAINS SUPPLY IN LE SES BOILER RECOMMENDATIONS MAX CABLE SIZE 1 5MM BACK BO
3. Operating Instructions Model PRT PRT N Version 3 01 10 Revision 2 Ref PRTV3 Contents Page What is a programmable thermostat 2 4 Installation 5 6 Icons explained 6 Temperature Display 7 Setting the Clock 7 Setting the Comfort Levels 8 9 Keypad Lock Facility 9 Temperature Hold 10 Setting the Temperature 10 Holiday Feature 11 Turning the Heating On Off 12 Factory Reset 12 Optional Thermostat Settings 13 17 Re calibrating the Thermostat 18 Wiring 19 23 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 Turning a programmable room thermostat to a higher setting will not make the room heat up any faster How quickly the room heat up depends on the design of the heating system the size of the boilers and radiators Neither d
4. X DEPTH 35MM MAX LOAD 3 AMPS 19 PRT 240V CHANGEOVER SWITCHING MAINS SUPPLY IN PRT L N un 98 8 NJL JINGJINOJ 922 Qim RECOMMENDATIONS MAX CABLE SIZE 1 5MM gt lt BACK BOX DEPTH 35MM TAR MAX LOAD 3 AMPS MAINS SUPPLY IN PRT VOLTFREE SWITCHING NLE L PRT esee BGS BOILER RECOMMENDATIONS 0 CABLE SIZE 1 5 Boiler thermostat or timeclock connections BACK BOX DEPTH 35MM LOAD 3 AMPS 21 PRT N 240V SWITCHING RECOMMENDATIONS MAX CABLE SIZE 1 5MM BACK BOX DEPTH 35MM MAX LOAD 3 AMPS LEO lt Q 309 39 098 L E TOBOILER N MAINS IN e 22 PRT N VOLTFREE SWITCHING RECOMMENDATIONS MAX CABLE SIZE 1 5MM BACK BOX DEPTH 35MM e MAX LOAD 3 AMPS Pal 008099 S COMMS CABLE 12 2 a POWERED RELAV CARD G9 69 C909 QBS 28 SS Ge 9 NO 9 TO BOILER THERMOSTAT CONNECTIONS MAINS IN 23 24 recommended Support Tel 01254 870303 Certification mark
5. day function This allows you to enter a holiday setting During a holiday the thermostat will maintain the frost set temperature At the end of your holiday the thermostat will revert back to the programmed setting ensuring that your home is warm on your arrival e Press H three times Until you see the suitcase e Using the Up Down arrow keys enter the number of days holiday e Press A to accept The Heatmiser PRT will show a suitcase indicating the thermostat is in holiday mode To cancel reduce the Holiday duration to 00 days 11 Heat On Off Frost Protect Mode Pressing the Power button once will place the thermostat in frost protect mode In this mode the thermostat will display the frost icon and will only turn the heating on should the room temperature drop below the set temperature see page 14 Should the heating be turned on whilst in frost mode the flame symbol will be displayed To cancel the frost protect mode press the On button Thermostat Off To turn the thermostat off completely press and hold the Off button The display and heating output will be turned off To turn the thermostat back on press the On button Factory Reset The thermostat has a factory reset function This will reset all settings back to their factory default To perform a factory reset follow these steps e Turn the thermostat off See above e Press and hold the Power and Up arrow key until the LCD powers up All of the icons
6. oes the setting affect how quickly the room cools down Turning a programmable room thermostat to a lower setting 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 The way to set and use your programmable room thermostat is to find the lowest temperature setting 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 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 you 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 3 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 mu
7. st 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 programme for example Override Advance or Boost These are explained in the manufacturers instructions Programmable room thermostats need a free flow of air to sense the temperature so they must not be covered by curtains or blocked furniture Nearby electric fires televisions wall or table lamps may prevent the thermostat from working properly Installation Procedure Do s 1 Do mount the thermostat at eye level 2 Do read the instructions fully so that you can get the best from our product Don ts 1 Do not install near a direct heat source as this will affect the workings of the thermostat 2 Do not push hard on the LCD otherwise you will damage the liquid crystal display and this is not repairable Installation The thermostat is designed to be flush mount a back box of 35mm should have been sunk in the wall prior to installation Step 1 Carefully separate the front half of the thermostat from the back plate by placing a small flat head terminal driver in to the slots on the bottom face of the thermostat Step 2 Place the thermostat front somewhere safe Terminate the thermostat as shown in the diagrams at the back of this booklet Step 3 Clip the front of the thermostat to the back plate Icons E
8. will be displayed When they have disappeared the thermostat has been reset 12 THE FOLLOWING SETTINGS ARE OPTIONAL AND IN MOST CASES NEED NOT BE ADJUSTED Optional Features Explained Feature 01 Temperature Format This function allows you to select between C and F Feature 02 Switching Differential This function allows you to increase the switching differential of the thermostat The default is 1 C which means that with a set temperature of 20 C the thermostat will switch the heating on at 19 C and off at 20 C With a 2 C differential the heating will switch on at 18 C and off at 20 C Feature 03 Frost Protect You can set whether the thermostat will maintain the frost temperature when the thermostat display is turned off As a default this is enabled 13 Feature 04 Frost Protect Temperature This is the temperature maintained when the thermostat is in frost mode The range is 07 17 C The default is 12 C and is suitable for almost all applications Feature 05 Output Delay To prevent rapid switching an output delay can be entered This can be set from 00 15 minutes The default is 00 which means there is no delay Feature 06 Communication Address This setting is used when you have connected your thermostat to a network system Each thermostat on your network must have a unique communication address This can be set from 01 32 Feature 07 Temperature Up Down Limit This function allows
9. xplained Symbol Description Heat On Icon D Shown when the heating is On Flashing when the optimum starts is in operation Shown when the heating is switched off and is protecting against frost only ep Frost On Icon Heating Off Keylock Icon Shown when the keypad is locked Temperature Display Room Temp This is the current room temperature SET This is the temperature you are trying to achieve in your home Setting the Clock To set the clock follow the steps below e With the thermostat turned on press the Clock button twice You are now able to set the minutes using the Up Down keys Press H to accept You are now able to set the hours using the Up Down keys Press H to accept You are now able to set the day of the week using the Up Down keys e Press A to store and exit Comfort Levels Explained The Heatmiser PRT provides Weekday Weekend or 7 Day Programming You should consult the Configuration Menu section to select the required mode The thermostat is supplied with comfort levels already programmed but these can be changed easily The default times are 08 00 21 C Wake 09 30 16 C Leave 16 30 22 C Return 23 00 17 C Sleep If you only want to use 2 levels you should program the unused levels to To begin programming the comfort levels press Clock Once f your thermostat is setup for Weekday Weekend Programming you will see Mon
10. you to limit the use of the up and down temperature arrow keys This limit is also applicable when the thermostat is locked and so allows you to give others limited control over the heating system Feature 08 Sensor Selection This thermostat has a built in air sensor Feature 09 Floor Temp Limit This function is not available on this model 14 Feature 10 Optimum Start Optimum start will delay the start up of the heating system to the latest possible moment to avoid unnecessary heating so that the dwelling is comfortably warm by the programmed time The thermostat uses the rate of change see below setting to calculate how long the building needs to take to raise the building 1 C with a rate of change of 20 the thermostat has calculated the building needs 20 minutes to raise the building 1 C Feature 11 Rate of Change For information only Feature 12 Weekday Weekend or 7 Day Programming The thermostat offers two programming methods Weekday Weekend allows you to program 4 comfort levels for the weekday and 4 different comfort levels for the weekend In 7 day program mode each day has 4 comfort levels that can be programmed independently 15 Adjusting the Optional Settings 1 To access the configuration menu turn off the thermostat by pressing and holding down the Power Button Then press and hold the Clock button until the display lights up The small number is the feature number the large number is
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