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To activate the lock, first press the “

SET

” button to go to the main screen, then 

press the

 

 

and

 

 

buttons together and hold them down for at least 5 

seconds. After the control buttons have successfully been locked, the notice 

” appears in place of the time characters for a couple of seconds. Until 

the control buttons are locked, their normal function do not work; if any button 

is pressed, then only the notice “

” appears and nothing else happens. 

To unlock press the

 

 

and

 

 

buttons together and hold them down for 

at least 5 seconds. After unlocking the buttons, the notice “

” appears 

in place of the time characters for a couple of seconds, whereupon all the 

buttons can be used normally again.

7. CHANGING THE BATTERY

The average lifetime of the batteries is 1 year, but frequent use of the 

background light may shorten this time considerably. If the   icon indicating 

low battery voltage appears on the display, the batteries should be replaced 

(see Section 2.1). The exact time should be set again after the batteries have 

been replaced, but the device saves the program that has been loaded even 

without batteries therefore there is no need to reprogram the device.

8. RESETTING THE THERMOSTAT TO ITS FACTORY

DEFAULT SETTINGS

By pressing the “

RESET

” button located on the main panel of the thermostat, 

the thermostat can be reset to its factory default settings. This results in 

deleting the day, exact time, basic settings and the set program. After resetting 

the device, adjust the basic settings of the thermostat again and create the 

new program, as described in Sections 2 and 3.

9. THE RECEIVER UNIT

9.1 Installation and connection of the receiver unit

The receiver unit should be mounted on the wall in a place protected against 

moisture and heat, in the vicinity of the boiler.

ATTENTION!

 

Do not install the receiver unit under the housing of the boiler or 

near hot pipes because it may damage the parts of the device or compromise 

wireless  (radio-frequency)  connection.  To  avoid  electric  shock,  entrust  a 

specialist with connecting the receiver unit to the boiler!

Unscrew the two screws at the bottom of the receiver unit without removing 

them. Following this, remove the front panel of the receiver unit then fix the 

back panel to the wall in the vicinity of the boiler with the screws provided. 

Remove the protective carton from the contacts to ensure perfect contact. 

The marks of the connections are located above the connection points:

L1   N1   L2   N2   L3   N3   L4   N4   NO   COM   L   N

230V mains voltage should be supplied to the receiver unit. This provides 

Summary of Contents for Q8RF

Page 1: ...COMPUTHERM Q8RF Multi zone programmable wireless radio frequency digital room thermostat Operating Instructions NEW design...

Page 2: ...g the living room and the bathroom during the day and the bedroom during the night Because there is a wireless radio frequency connection between the thermostats and the receiver no cable is required...

Page 3: ...tual temperature measured during the switching process In case of the 0 2 C switching sensitivity and heating mode for example if the set temperature is 20 C then the device switches the boiler on at...

Page 4: ...ead may disturb the temperature control of the flat 2 PUTTING THE THERMOSTAT INTO OPERATION BASIC SETTINGS 2 1 Inserting batteries Pressing the lock on the upper side of the housing of the thermostat...

Page 5: ...tween the heating and cooling mode There is a possibility to easily switch between the heating and cooling mode of the thermostat The output terminals of the receiver unit No 1 NO and No 2 COM are clo...

Page 6: ...deactivate this function using the large and buttons The notices and indicate activated and deactivated state respectively Finally confirm the setting by pressing the SET button if no buttons are pres...

Page 7: ...ctivate more than one switch for each day Furthermore it is advised that a comfort temperature is used only those times when the room or building is in use since every 1 C decrease of temperature save...

Page 8: ...s should be copied using the COPY button A separate program can be created for the heating and cooling mode and these programs are preserved when switching between the modes Therefore if the thermosta...

Page 9: ...ich is indicated on the display of the device by flashing the temperature value to be set C by default Set the desired temperature using the large and buttons then press the PROG button e Then the sta...

Page 10: ...d the flashing abbreviation MON indicating Monday shows that conditions are ready for copying a program Select the day whose program you wish to copy to another day or other days using the large and b...

Page 11: ...the new program as described in Sections 2 and 3 3 6 Program inspection First press the SET button to go to the main screen then press the PROG button At this point the abbreviation indicating the da...

Page 12: ...program switch Set the required temperature using the large and buttons on the front panel of the device At this time the icon appears on the display indicating that the thermostat is operated with m...

Page 13: ...anual control e g that is 3 days After this time has elapsed the icon disappears and the device resumes the program that has been set If you wish to return to the set program before the time set for t...

Page 14: ...E THERMOSTAT TO ITS FACTORY DEFAULT SETTINGS By pressing the RESET button located on the main panel of the thermostat the thermostat can be reset to its factory default settings This results in deleti...

Page 15: ...onsider the loadability of the receiver unit and follow the manufacturer s instructions of the heating or cooling equipment The device must be installed and connected by a qualified professional The v...

Page 16: ...it depressed for approximately 3 seconds until the red LED light on the receiver stops flashing it remains switched on or off depending on the set and measured temperatures Finally press the SET butt...

Page 17: ...orm the test press the TEST button for approximately 2 seconds Following this the thermostat will send alternating every 5 seconds switch on and switch off control signals to the receiver for 2 minute...

Page 18: ...Start time Temp C Start time Temp C Start time Temp C Start time Temp C Start time Temp C Start time Temp C Start time Temp C MONDAY MON SUNDAY SUN SATURDAY SAT FRIDAY FRI THURSDAY THU WEDNESDAY WED T...

Page 19: ...A size power consumption 1 3mW battery lifetime approx 1 year operating frequency 868 35MHz dimensions 130 x 80 x 22mm without holder weight 112g temperature sensor type NTC 10k 1 at 25 C Technical da...

Page 20: ...set the temperature using the and buttons for a period of 1 to 9 hours set the temperature using the and buttons then press the DAY button and finally set the duration using the and buttons for a per...

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