background image

The voltage appearing on terminals 

1

2

 or 

3

 depends only on 

the system to be controlled, therefore the dimension of the wire to 
be used is determined by the type of the device to be controlled. 
The length of the wire is of no significance, the receiver unit may 
be installed either near the boiler or far away from it. 

If the distance between the transmitter and receiver units is too 

large due to local circumstances and it makes the wireless (radio-
frequency) connection unreliable, install the receiver unit nearer to 
the place of thermostat.

7.2 Putting the receiver unit into operation

Turn on the power supply to the receiver unit. After a few seconds 

have elapsed, the wireless (radio-frequency) system (thermostat 
and receiver unit) tunes itself to the specified frequency. On trial 
press the      button of the thermostat several times, until the set 
temperature  is  2-3°C  higher  than  the  temperature  of  the  room. 
Following this, the “

HEAT

” icon indicating that the heating is turned 

on  should  appear  on  the  display  of  the  thermostat  within  a  few 
seconds. 

At the same time, the red LED light on the receiver unit should  

switch  on  to  indicate  that  the  receiver  unit  has  received  the 
command of the transmitter (thermostat). 

If it does not happen, the system should be retuned. For this 

purpose  press  the  “M/A”  button  of  the  receiver  unit  and  keep  it 
depressed  (for  approximately  10  seconds)  until  the  green  LED 
starts flashing. Then press the “

LEARN

” button of the thermostat 

located near the battery compartment and keep it depressed (for 
approximately  10  seconds)  until  the  green  LED  stops  flashing 
and goes out, so that the receiver unit “learns” the safety code of 
the transmitter (thermostat). The safety code will not be lost even 
during a power outage, the system memorizes it automatically. 

ATTENTION:

  Pressing  the  “

LEARN

”  button  for  10  seconds 

generates a new safety code for the thermostat, and the receiver 
will recognize it only after a repeated tuning. With this in mind, do 

 -10 -

Summary of Contents for q3rf

Page 1: ...COMPUTHERM Q3 RF wireless radio frequency digital room thermostat Operating Instructions...

Page 2: ...w and above the adjusted temperature respectively and contributes to reduce energy costs while maintaining comfort The device consists of two units One of them is the portable control unit thermostat...

Page 3: ...sensitivity of the thermostat is 0 2 C 0 3 C This means the difference between the adjusted temperature and the actual temperature measured during the switching process For example if the factory def...

Page 4: ...maximum temperature in the room where the room thermostat is to be located otherwise the thermostatic head may disturb the temperature control of the flat 2 PUTTING THE THERMOSTAT INTO OPERATION BASI...

Page 5: ...t of the Displayed Temperature The unit of measurement of the temperature shown on the LCD display can be selected and set by the central jumper With factory default settings the display shows the tem...

Page 6: ...uble free wireless radio frequency connection both the thermostat and the receiver unit have their own safety codes After installing the receiver unit the two units should be synchronised by pressing...

Page 7: ...rature is displayed 5 Operation of the Installed Thermostat After connecting commissioning and performing basic settings and setting the temperature the thermostat is ready for operation and controls...

Page 8: ...is 1 year The icon alternately replacing the temperature value on the LCD display indicates low battery voltage Replace the batteries whenever the ddd icon indicating low battery voltage appears on t...

Page 9: ...nt N while the phase conductor to point L We propose to interpose a switch so that the receiver unit can be de energized if required The receiver unit controls the boiler through a potential free alte...

Page 10: ...the temperature of the room Following this the HEAT icon indicating that the heating is turned on should appear on the display of the thermostat within a few seconds At the same time the red LED ligh...

Page 11: ...wo units are outside the transmission distance of the wireless radio frequency transmitter thus they have to be placed closer to each other 7 4 Manual control of the receiver unit Pressing the MANUAL...

Page 12: ...ency 868 35 MHz power consumption 1 5 mW battery lifetime approx 1 year dimensions 112 x 75 x 45 mm weight 154 g temperature sensor type NTC 10 K 1 at 25 C Technical data of the receiver unit power co...

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