Hep2O 52UH873 Manual Download

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Thermostat completely OFF

Thermostat powered ON

Slimline

Series

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 frost temperature (see page 19).

To cancel the frost protect mode, press the Power button once again.

Frost Protection Mode Enabled

Frost Mode

set temperature but the thermostat remains active.

To turn the thermostat OFF completely, press and hold the Power button..........
The display and heating output will be turned OFF completely.*

To turn the thermostat back ON, press the Power button once again ...................

*See Feature 3 on page 19

Summary of Contents for 52UH873

Page 1: ...m hep2o PDF FAQ Heating Professionals Request a copy of our product installation guide for our complete product range www hep2o co uk Want More Information Call our support team on 0844 856 5152 3 Or visit our website www hep2o co uk H R g w Want More Inf ...

Page 2: ... Holiday Programming Frost Protection Optional Features Re calibrating the Thermostat Factory Reset Wiring Diagrams P Pr rodu oduc ct t I Image mage L Loc ock king ing the the T The her rmost mosta at t L LCD D CD Displ ispla ay y F Fr rost ost P Pr ro ot te ec ction tion W Wh ha at is t is a a P Pr ro og gr ramma ammable ble R Room oom T The her rmost mosta at t T Tempe empe T T T T ra ratu tur r...

Page 3: ...rriding or using the temperature hold feature These features are explained further on pages 14 and 15 of this manual so they must not be covered by curtains or blocked by furniture Nearby electric properly What is a Programmable Room Thermostat A programmable room thermostat is both a programmer and a room thermostat The room thermostat works by sensing the air temperature switching on the heating...

Page 4: ...stat front somewhere safe Terminate the thermostat as shown in the diagrams on pages 25 29 of this booklet Step 3 Screw the thermostat back plate securely into the back box 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 push hard on the LCD screen as this ...

Page 5: ...Indicates when changes are being made to programs or temperature set points 7 Holiday Indicator Displayed when the thermostat is in holiday mode 8 Current Temp Indicates the current sensor temperature 9 Program Cycle Indicator Displayed during programming only to show which period is being altered 10 Keypad Lock Indicator Displayed when the keypad is locked 11 Units of Temperature Degrees Celsius ...

Page 6: ...Down keys to set the hours t t Use the Up Down keys to set the minutes t t Use the Up Down keys to set the day of the week t Temperature Display Day Hours Minutes Room Temperature Set Temperature This is the current room temperature This is the temperature you are trying to achieve in your home measurement and the target temperature you have set ...

Page 7: ...are the same for all t To program comfort levels press Clock once t Use the Up Down keys to enter the required WAKE time t t Use the Up Down keys to enter the required WAKE temperature t t You will now see LEAVE displayed on screen t Repeat the programming steps for each period until complete t For unused periods enter and the thermostat will ignore the setting t Note t In 7 Day programming mode y...

Page 8: ...splay Set Temperature Set Icon Locking the Thermostat The thermostat has a keypad lock facility To activate the lock follow these steps t Press and hold the A and Down keys together for 10 seconds t You will see the lock symbol appear on screen t To unlock repeat the steps above until the lock symbol disappears Note The keypad lock indicator is only displayed when the lock is active Note This over...

Page 9: ... 00 hours Hold ON Indicator Hold Time Remaining Note A holiday period does not start until 00 00 the next day For example if you set thermostat will revert back to the programmed schedule at 00 00 on Monday The holiday function reduces the set temperature in your home to the frost protection temperature setting see page 19 The thermostat will maintain this temperature for the duration of the holid...

Page 10: ...the room temperature drop below the set frost temperature see page 19 To cancel the frost protect mode press the Power button once again Frost Protection Mode Enabled Frost Mode set temperature but the thermostat remains active To turn the thermostat OFF completely press and hold the Power button The display and heating output will be turned OFF completely To turn the thermostat back ON press the ...

Page 11: ...o 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 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 Feature 10 Optimum Start Optimum start will delay the start up of the heating system...

Page 12: ...at t O Outp utput ut D Del ela ay y Up Up D Do own wn T Temp empe e T T T T r ra atu tur re L e Limi imit t F Fr rost ost M Mode ode DESCRIPTION 00 o C 01 o F C Default 01o 03o C 01o C Default 00 Enabled 01 Disabled 00 Default 07o 17o C 12o C Default 00 15 Minutes 00 Default Set unique comms address 01 32 00o 10o C 00 Default Built in Air Sensor Not used on this model 00 03 Hours 00 Default Minute...

Page 13: ...utton once to turn the thermostat back ON Factory Reset To perform a factory reset follow these steps t Press and hold the Power button to turn the thermostat OFF t Press and hold the Power and Up keys together until the LCD powers up All of the icons will be displayed on screen t When the icons have disappeared from the screen the thermostat has been successfully reset t Press the Power button on...

Page 14: ... Wiring Diagram 52UH873 to Boiler S L Wiring Diagram 52UH873 to Boiler Voltfree TO CONNECT BOILER CONSULT BOILER MAKERS DIAGRAM NEUTRAL LIVE LS LR 230V SUPPLY IN LS LR ARE NORMALLY THE ROOM THERMOSTAT CONNECTIONS VOLT FREE TO BOILER 230V AC 50 60Hz 52UH873 A1 A2 L N 230VAC THIS UNIT MUST BE PROTECTED BY A FUSE OR RCD THIS UNIT MUST BE PROTECTED BY A FUSE OR RCD ...

Page 15: ... 230V SUPPLY IN 230V AC 50 60Hz 52UH873 A1 A2 L N 230VAC Wiring Diagram 52UH873 to PRC Volt Free Switching 12V COMMS CABLE A2 B2 NO NC C NO NC C N E L 230V SUPPLY IN Volt Free Output POWERED RELAY CARD _ Recommendations Max Cable Size 1 5MM Back Box Depth 35MM Max Load 3 Amps For 230V switched live output link mains L to C 52UH873 RT2 RT1 A2 A1 Y B Network 12VDC THIS UNIT MUST BE PROTECTED BY A FU...

Page 16: ... Network 12VDC 52UH108 ZONE X A2 A1 B Y _ ZONE X A2 A1 B Y _ Connecting 52UH873 to the 52UH108 The 52UH108 allows connection of up to eight 12 volt network thermostats When connecting network thermostats to the 52UH108 use CAT5 FTP or BELDEN 9538 Connect the screen to Earth at the 52UH108 Notes ...

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