9
1.2
Start-up
1.2.1
Preliminary checks
a
WARNING
– Should it be necessary to access the areas in the
bottom 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
following 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”
. Turn the
encoder to select the pre-
ferred mode e.g. “Winter” (Winter)
– press the
click
encoder to confirm “Winter” (Winter)
– press the button
“ESC”
to go back to the
“main screen”
.
Summer
Winter
Off
DHW
MAN
40
°C
Heating
AUTO
20
°C
Holiday function
OFF
Esc
MENU
MODE
ZONES
Mon 01.01.2018
10:30
Fig. 4
–
open one or more of the hot water valves and check that the ap-
pliance starts up
Summer
Winter
Off
DHW
MAN
40
°C
Heating
AUTO
20
°C
Holiday function
OFF
Esc
Fig. 5
– allow the appliance to operate until hot water is produced and
shut off the valves opened previously.
