9
1.2
Start-up
1.2.1
Preliminary checks
a
WARNING
– Should it be necessary to access the areas in the bot-
tom part of the appliance, make sure that the system
components and pipes are not hot (risk of burning).
– Before replenishing the heating system, put on pro-
tective gloves.
Commissioning of the
MURELLE.HT
boiler must be carried out by
professionally qualified Personnel after which the boiler can op-
erate automatically. It may however be necessary for the User to
start the appliance autonomously without involving a technician:
for example, after a holiday . In these cases certain checks and
the following operations must be carried:
– check that the gas isolation and water system valves are open
– using a pressure gauge (1), check that the heating system
pressure when cold is
1-1.2 bar
. If this is not the case, open the
filling valve (2) and restore the heating system pressure until
the pressure gauge (1) shows a reading of
1-1.2 bar
– close the filling valve (2).
1
2
Fig. 2
1.2.2
Ignition
After having carried out the preliminary checks, perform the fol-
lowing to start the boiler:
– set the main system switch to "ON"
– after a few seconds, the “Main screen” is shown
ON
Menu
Mode
Zones
Mon 01.01.2018
10:30
Fig. 3
– turn the
encoder to select the
“Mode”
(Mode) function
– press the
click
encoder to go to the screen to select the
“
Function mode”
(MODE). Turn the
encoder to select the
preferred mode e.g. “Winter” (Winter)
– press the
click
encoder to confirm “Winter” (Winter)
– press the
“ESC”
button to go back to the “main screen”.
Summer
Winter
Off
Hot water
MAN
40
°C
Heating
Esc
Menu
Mode
Zones
<<strdata>>
10:30
Fig. 4
– open one or more of the hot water valves and check that the
appliance starts up
Summer
Winter
Off
Hot water
MAN
40
°C
Heating
Esc
Fig. 5
– allow the appliance to operate until hot water is produced and
shut off the valves opened previously.
