TECHNICAL ASSISTANCE SERVICE
35
INITIAL START-UP
b
Initial start-up must be performed by an authorised and qualified heating engineer from a
r
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.
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 "
}
" or
Winter "
{
", depending on which functioning mode you
require.
b
Every time electrical power is switched on, the
boiler performs an automatic venting cycle that
lasts about 12 minutes. Throughout this cycle
the two digits of the display flash alternately.
At the end of the automatic venting cycle, check
the pressure on the gauge (7) again. If neces-
sary, turn the boiler off at the mains power
switch and at the control panel and refill the CH
ON
OFF
°C
0
120
20
100
40
80
60
0
bar
4
1
3
2
PREPARING FOR INITIAL START-UP
Pressure measurement
point upstream from valve
Summary of Contents for 20044966
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