19
3.4.
I
NITIAL
S
TART
-
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 pressure gauge;
-
the gas cock is closed;
-
the electrical connection has been carried out in the correct manner.
To allow the air to escape from the system, proceed as follows:
-
turn on the On/off knob “A” 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;
-
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. Check the flue system for products of combustion.
3. Fill the boiler condensate trap with water.
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 is
dangerous because it could possibly lead to a leakage of fumes into the air.
4. Turn on the gas cock 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. Check the
connections with a soap solution and eliminate any leaks.
5. Press the reset button “H” for the lighting system; the spark will light the main burner. If
the burner does not light the first time, repeat the procedure.
The boiler is configured in the factory for the gas type in question. To check the
air/gas ratio, please refer to section 3.6.4.
F
IG
. 3.1
