9
1.2
Preliminary checks
Prior to use the Murelle Advanced HE ErP boiler must be installed
and commissioned by a Gas Safe Registered engineer. It may
be necessary for the user to occasionally have to start the
boiler, for instance after a holiday or after an interruption of
the gas supply.
First of all, check that the gas isolation and water system
valves are open.
1.3
Ignition
After having carried out the preliminary checks, proceed as
follows:
– set the main system switch to "ON"
– check that the operating mode on the display is "Stand-by" and
if necessary select it by pressing the button
s
once or twice
– check that the pressure in the heating system, when cold,
is 1-1.2 bar. If the pressure is less than this use the external
filling device to repressurise the system to 1-1.2 bar
– ensure that the filling device is turned off after use.
1
Fig. 2
– select the "SUMMER"
l
operating mode by pressing and
holding the
y
button for at least 1 second. The delivery
temperature detected at that moment will appear on the
display
– open one or more than one hot water tap. The
r
should
appear on the display and the boiler will ignite and stay
alight until the tap is turned off.
Once the boiler has been operated in "SUMMER mode"
l
"WINTER mode"
n
can be selected by pressing and holding
the button
y
for at least 1 second. The delivery water
temperature detected at that moment will appear on the
display. Ensure that any timers and room thermostats are
in the on position. The
t
will appear on the display and the
boiler will ignite.
1.4
Adjusting the delivery temperature
The temperature of the heating water can be adjusted by
pressing the button
t
followed by the buttons
>
or
<
on the
control panel until the desired temperature is reached. The
temperature can be set to between 20 and 80°C.
1.5
Adjusting the domestic hot water
temperature
The temperature of the domestic hot water can be adjusted by
pressing the button
r
followed by the buttons
>
or
<
, on the
control panel, until the desired temperature is reached. The
temperature can be set to between 10 and 60°C.
