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2.2 Setting the current day and time

Press the “

SET

” button to go to the main screen, then press the “

DAY

” button. 

At this time only the first three letters of the current day will flash on the display 

of the thermostat and the hour and minute values can be seen. 
Using the large 

 and 

 buttons on the front panel of the device, set the 

the current day (Monday 

MON

; Tuesday 

TUE

; Wednesday 

WED

, etc.). Press 

the “

DAY

” button again. At this time the contraction indicating the day stops 

flashing and becomes visible continuously while the abbreviation indicating the 

hour will flash on the display. Using the large 

 and 

 buttons on the 

front panel of the device, set the hour value of the current time. Press the “

DAY

” 

button again. At this time the numbers that indicate the hour stop flashing and 

become visible continuously, while the numbers indicating the minute will begin 

flashing. Using the large 

 and 

 buttons on the front panel of the device, 

set the minute value of the current time.
When you wish to continue modifying the settings, please press the “

DAY

” 

button again. If you wish to finish settings, confirm them by pressing the “

SET

” 

button. At this point adjusted data are recorded and the device goes back to 

the main screen (if no buttons are pressed for at least 15 seconds, the settings 

are automatically confirmed and the device goes back to the main screen).

   

2.3 Switching between 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 closed below the set temperature in heating mode, and they 

are closed above the set temperature in cooling mode (taking the switching 

sensitivity into account). Following the heating/cooling command of the 

thermostat, 230V AC, 50Hz voltage appears on the zone outputs associated 

with the thermostats (

L1-N1

L2-N2

; etc.). The thermostat indicates the 

heating command with the icon      and the cooling command with the       in 

the bottom left corner of the display.

To  switch  between  the  two  modes,  first  press  the  “

SET

” button to go to 

the main screen. Then press the “

SET

” button again and hold it down and 

press the “

COPY

” button, too. After this, the notice

 „

 or 

 appears 

in place of the time characters, according to the selected mode. Following 

this, switch between the modes using the large 

 and 

 buttons, then 

confirm it by pressing the “

SET

” button (if no buttons are pressed for at least 

15 seconds, the setting is automatically confirmed). After this confirmation, 

the device goes back to the main screen.

2.4 Setting the switching sensitivity (accuracy)

The switching sensitivity means the temperature difference between the 

adjusted value and the actual temperature measured during the switching 

process. A smaller switching sensitivity results in steadier room temperature 

and therefore in higher comfort. The heat loss of the room (building) does 

not depend on the switching sensitivity.

- 5 -

Summary of Contents for Q8RF(TX)

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

Page 2: ...ure at the dates and times specified by you to reduce energy costs while maintaining comfort Separate temperature programs can be prepared for each day of the week For each day beside 1 fixed switchin...

Page 3: ...9 8 C or below and switches it off at 20 2 C or above Please refer to Section 2 4 for the modification of the factory default switching sensitivity of 0 2 C The thermostat is equipped with a pump prot...

Page 4: ...e thermostatic head 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...

Page 5: ...between 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 c...

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: ...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 but...

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: ...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 bee...

Page 15: ...spectively When the receiver unit fails to receive signals sent by the thermostat then the receiver unit is outside the transmission distance of the wireless radio frequency transmitter thus they have...

Page 16: ...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 17: ...t 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 period...

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