Technical information

35
3.4. INITIAL START-UP
1. Make sure that:
- the cap of the automatic air release valve is loosened;
- the system pressure is at least 1 bar on the
p
ressure gauge “F” (Fig. 3.4);
- the gas cock is closed (Fig. 3.7);
-
the electrical connection has been carried
out in the correct manner.
To allow the air to escape from the system,
proceed as follows:
- push the On/off button and turn the
knob “C” (Fig. 3.5) to the “winter” position. The boiler pump will
start up and three consecutive attempts will be made to ignite
the burner. After the third attempt, the electronic system will
shutdown the boiler, because the supply of gas has been cut off.
The message “
A01” will appear on the display and the red LED
“H” will illuminate;
- let the pump operate until all the air has escaped from the
system;
- repeat the procedure for bleeding the radiators of air;
- draw hot water for a short while;
- check the system pressure and, if it has gone down, fill it with
water until it returns to 1 bar.
2. Fill the boiler condensate trap with water, by pouring 1/2 a
litre of water into the exhaust flue connector (see Section
2.9 Connecting the Flue).
N.B.
In the event of a prolonged period of system shutdown,
the condensate trap should be filled before any renewed
use
. A shortage of water in the trap could temporarily lead
to a small leakage of fumes into the air.
3,
Ensure that the flue is fitted correctly.
4. Turn on the gas cock (Fig. 3.8) and check
the seals on the connections, including the
one for the burner, making sure that the
meter does not signal the passage of gas.
Chec
k the connections with a soap solution
and eliminate any leaks.
5. Press the reset button , the boiler will attempt to light.
If the burner does not light the first time, repeat the procedure.
Note:
Should the boiler fail to ignite check that no air is present in
the gas pipe.
The boiler is configured in the factor
y for the gas type in
question.
T
o check the CO
2 setting,
please ref
er to Section
3.6.3.
6.
Run the appliance in the DHW mode and chec
k the correct
operation of the thermostat control.
7. Complete the commissioning checklist.
FIG. 3.5
C
H
FIG. 3.7
FIG. 3.6
Fig. 3.8