11
1.2 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
protective gloves.
Prior to use the
GIULIA COMBI
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. In these cases the following operations must be car-
ried out.
– check that the gas isolation and water system valves are
open
– using the pressure gauge (1) 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
1.3 Ignition
After having carried out the preliminary checks, proceed as
follows:
– set the main system switch to "ON"
ON
Fig. 3
– on the display, check that the operating mode on the dis-
play is "SUMMER”
l
and if necessary select it by pressing
and holding the button
s
for at least 1 second. The internal
temperature of the boiler will appear on the display
– open one or more than one hot water tap. The
r
should ap-
pear 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
s
for at least 1 second. The internal temperature
of the boiler will appear on the display. Ensure that any timers
and room thermostats are in the on position. The
t
will ap-
pear on the display and the boiler will ignite.
1.4 Adjusting the delivery temperature
Should you wish to increase or decrease the boiler delivery
temperature, turn the dial
t
to the desired setpoint. The val-
ue can be set to between 20°C and 80°C.
Fig. 4
1.5 Adjusting the domestic hot water tem-
perature
Should you wish to increase or decrease the domestic hot wa-
ter temperature, turn the dial
r
to the desired setpoint. The
value can be set to between 10°C and 60°C.
Fig. 5
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