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4 START-UP AND FUNCTIONING
4.1
Preliminary checks
Remove the front panel of the boiler and perform the following checks before switching the boiler on or testing any
of its functions:
- check that the fuel and water circuit shut-off cocks are open
- check that the type and pressure of the gas supply are as specified for the boiler
- check that the water circuit pressure gauge shows a pressure over 1 bar with the system cold. Check also that the
central heating circuit is properly de-aerated
- check that the pressure in the central heating circuit expansion vessel is sufficient (about 1 bar)
- check that the electrical connections to the mains supply and to the system's control and safety devices have been
made correctly
- check that the flue is properly constructed.
4.2
Ignition
Once you have completed all the preparatory
steps, proceed as follows to start up the boil-
er for the first time:
- Turn the boiler's mains power switch ON
(fig. 4.1)
Fig. 4.1
- Set the room thermostat to the required
temperature (~ 20°C) or, if the system has a
timer or timer-thermostat, make sure that
this is switched "ON" and adjusted to the
required temperature (fig. 4.2)
Fig. 4.2
- Adjust the boiler's temperature control to
the desired temperature (operation not nec-
essary if the boiler has been equipped with
a temperature controller) (fig. 4.3)
Fig. 4.3
- Switch the boiler on at the control panel
switch and check that the green power indi-
cator lights (fig. 4.4).
Fig. 4.4
19
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