3
Prior to installation the maximum comfort temperature must be set by using the knob marked COMF located at
the back of the controller as shown below. The range is 15
C to 35
C. The maximum comfort temperature limits
the room temperature that can be set by users after installation. The required room temperature can be
reduced by users by using the two adjustment buttons on the front of the controller after installation. These
buttons allow the user to change the set room temperature up or down subject to not exceeding the maximum
temperature set prior to installation.
After pressing the on button the heating will operate until the set room temperature is achieved, at this point the
indicator lights around the on button will change from green to orange. When the room temperature drops the
heating will become active again and the indicator lights will change back to green.
The display screen will show the actual room temperature, except briefly when either of the two adjustment
buttons are pressed, the new target room temperature is then temporarily displayed. This will flash to show you it
is the target temperature and not the room temperature.
3. Temperature Control Mode
Temperature control for Comfort period
Room temperature below the set temperature.
Heating is active.
Variable resistors to set
maximum comfort and
setback temperatures
Set temperature
achieved
Temperature control for comfort and setback periods can be used individually or together. This can also be used in
conjunction with the timer mode options.
In this mode, the controller will set heating active when the room temperature drops
below the set temperature. This feature can be used for frost protection or in situations
where a minimum room temperature must be maintained. The setback temperature
can be set using the knob marked SETB mounted on the back of the unit as shown
above. This can be set from 0ºC - 15ºC.
Temperature control for Setback period
For this mode, the switches are set as shown below.
If the heating is active in the setback mode, the indicators will illuminate red and green.
4. Changing temperature or timer settings after installation
The temperature and/or timer settings can be changed after installation. It is important to switch the power off to
the controller before the changes are made. After the changes are made and the power is restored the new
settings will take effect.
The controller can be switched off using any external device with voltage free
contacts. For example, timers or a building management system.
If this function isn’t used, a wire link across the external input connectors must be
used.
When the external input connection is open, the indicators will light up red and the
heating will be disabled. However, setback mode will still operate at low
temperature.
5. External Input
