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Installation
Comfort I– 6720810964 (2017/02)
2.2 RF Room thermostat
The Room thermostat can only be used in conjunction with the
Programmer/Receiver. The Room thermostat displays the
current room temperature and is also used to set a new
temperature set point. This information is transmitted back to
the Programmer/Receiver to control the boiler output to
maintain the desired room temperature.
Setting a new temperature will not have any effect when the
Programmer/Receiver is in an OFF time period, but will be
stored and take effect during the next ON period.
The display is not backlit, this will reduce the drain on battery
power which will maximise the life of the batteries.
Fig. 2 RF Room thermostat
3 Installation
Refer to the boiler’s Installation, Commissioning and Servicing
instruction manual for information on the boiler.
Refer to this manual for detailed information on installing and
using the Comfort I RF.
A brief overview of the Comfort I RF installation procedure is
listed below:
Isolate the boiler
Remove any panels or casings required to gain access to
the control panel
Mount the Programmer/Receiver (boiler fascia or a suitable
wall location using the optional Wall Mounting Plate Kit, this
will require wiring between the boiler EMS BUS
connections and Wall Mounting Plate)
▶Turn the boiler on
Set time and date on the Programmer/Receiver
Insert batteries in the Room thermostat
The units will automatically connect to each other
Ensure that the signal strength is adequate at the Room
thermostat before mounting in a suitable reference room
Section 6.7
3.1 Comfort I RF Installation
The Comfort I Twin Channel Radio Frequency Programmer/
Receiver and Room Thermostat comprises two units: the
Programmer/Receiver that mounts into the boiler fascia or,
with an optional wall mounting kit, onto the wall, and the Room
thermostat that mounts on the wall in a suitable reference
room.
3.2 Programmer/Receiver mounting
There are two methods of mounting the Programmer/Receiver:
In the boiler fascia
On the wall (optional wall mounting kit 7 733 600 039)
If your boiler is located remotely i.e. in the loft or an
outbuilding you may want the Programmer/Receiver to be
conveniently located for easy access
Boiler fascia mounted Programmer/Receiver
Refer to your boiler’s Installation, Commissioning and Servicing
instruction manual for mounting the Programmer/Receiver into
the boiler fascia.
Wall mounted Programmer/Receiver
Choose a convenient wall location, approximately 1.2 metres
from the floor, to mount the Programmer/Receiver.
1Display Current room temperature in degrees
centigrade ( °C)
New temperature set points when the
knob is being turned
Control fault codes
2 Battery
condition
indicator
The battery condition indicator is
displayed to advise of low battery power,
at this point there is approximately 2
months battery life
3Burner ON
indicator
This symbol is displayed when the boiler
is heating (can be up to 6 minutes delay)
4Rotary push
button knob
Press briefly to show the required room
temperature and turn to select new
temperature set point and press to
confirm
5 Current room
temperature
This is displayed until the knob is turned
or pressed
6720810964-02.1Wo
Comfort I RF
1
3
4
5
2
CAUTION: Mains supplies
Isolate the mains supplies to the boiler
before starting any work, and follow all
relevant safety precautions
5


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