15
GB-031C/f.347
USER INSTRUCTIONS
1. General
Unlike other system boilers such as Gas, Oil and Propane the
FUSION ‘Comet’ range of electric boilers require no ignition or
lighting sequence to be executed by the end user. All the end user
is required to do is ensure that the system is filled with water and
the room thermostat or programmer is calling for heat.
2. Boiler Operation
2.1 Switch the boiler on by pressing the
button. (Note: When
switching the boiler off use the same
button by pressing
and holding it in for 3 seconds.)
2.2 The recommended Water Pressure is approx 1.0/1.5 bar and
this can be checked by pressing the
button until indicator
A is illuminated. The water pressure can be adjusted by con-
necting the external filling loop and pressurizing to the desired
pressure. Note: the filling loop must be disconnected after the
system has been re -pressurized.
2.3 First set the required Boiler Temperature (we recommend a
setting of 65
0
C) by pressing the
button until only indicators
D and K are illuminated. Press the
button or the
button
until the desired temperature setting is achieved.
2.4 Ensure the room thermostat is switched on and is calling for
heat. If the boiler is not yet at the desired heat setting then
indicators D, G, H, I, J & K will be illuminated with indictor K
illuminated in red. Once the room has reached the required
setting the K indicator should change from red to green. Refer
to the Control Panel diagram above to learn how to adjust to
the right temperature to make the boiler work comfortably and
economically.
2.5 The boiler Flow Rate is set at 8 l/min during the installation
of the boiler. To check this setting then press the
button a
number of times until only indicator B is illuminated and then
read the figure on the digital display. If the figure is well below
the 8 l/min figure then call a Service Engineer for assistance.
2.6 To check the amount of kW energy being used by the boiler at
any point in time then press the
button a number of times
until only indicator C is illuminated and then read the figure
on the digital display.
2.7 When indicator H is illuminated the pump is running
3. Temperature Setting
We recommend the boiler temperature be set to 65
0
C. Raise or
lower the temperature in your installation with the buttons on
the right hand side of the control panel as per 2.3 in the previous
section.
ATTENTION: Should the temperature on the front panel be set
too low the desired room temperature may not be achieved.’
4. Summer Setting. (‘Stand by’ Mode)
The customer has the option to switch the boiler onto ‘stand-
by’ mode during summer months and this can be carried out by
pressing the
“button and holding this in for 3 seconds.’
All indicators will go off except the F indicator which will inter-
mittently illuminate.
IMPORTANT - DO NOT SWITCH THE BOILER OFF AT THE
MAINS SWITCH
In the ‘stand-by’ mode all the boiler functions are switched off ex-
cept the circulation pump. This is activated for 15 minutes each
day which protects the boiler and the whole central heating sys-
tem from being blocked and silted up. In this ‘stand by’ mode the
circulation pump will run each day at the same time. (e.g. If you
switch the boiler to ‘stand by’ at 6pm then the circulation pump
will run every day at 6pm for 15 minutes) To return to a ‘Winter’
mode setting then press and hold the
button for 3 seconds
again.
5. Winter mode
In the Winter mode setting the digital display will be active and
will show the temperature of the water at various points within
the boiler. Those indicators which are illuminated will show the
current status of the boiler. If the boiler is being called for heat
by the thermostat then the G, H, I, J & K indicators will be illumi-
nated. In the winter mode both the two port valves are active and
they will direct heat as required.
Note: When in diagnostic mode of the Display (i.e. using the
arrow buttons), and there has been no activity (i.e. buttons
pressed) for 60 seconds the Display will revert to its normal
mode.
