38
ENGLISH
TECHNICAL ASSISTANCE SERVICE
PREPARING FOR INITIAL START-UP
Once you have completed all the checks listed above,
proceed as follows to start up the boiler for the first time.
- Turn the mains power switch ON.
- Turn the boiler function selector to Summer "
b
".
b
WINTER mode "
a
" is not used, since functioning
of the CH circuits is controlled by the BAG control
card.
To ensure correct boiler functioning, keep
the function selector set to "
b
" SUMMER.
ON
OFF
INITIAL START-UP
20
40 60 80
100
4
3 2 1
0
0
120
°C
0
120
20
100
40
80
60
1
b
Initial start-up must be performed by an authorised and qualified heating engineer from a THERMITAL
Technical Assistance Centre.
Remove the front panel from the boiler and perform the following checks before switching the boiler on or testing any of
its functions.
- Check that the type of gas supply is correct for the boiler.
- Check that the fuel and water shut-off cocks to the boiler are open.
- Check that the central heating water pressure gauge shows a pressure
between 1 and 1.2 bar
with the system cold.
- Check that the gas supply pressure is correct for the boiler.
Proceed as follows to check the gas supply pressure:
- Unscrew the pressure measurement point screw
upstream from the gas valve about two turns, and con-
nect a pressure gauge to the measurement point
- Turn the boiler’s mains power switch ON
- Adjust a room thermostat to generate a heat request
- When the burner is operating at full power, check that
the gas supply pressure lies between the minimum
and rated pressure values given in the “Technical
Specifications” table
- Eliminate the heat request
- Disconnect the pressure gauge and tighten the pres-
sure measurement screw upstream from the gas valve.
Pressure measurement
point upstream from valve
