5
(e) Your boiler will now commence a start sequence, in which a
pre-ignition period of approximately 15 seconds is followed by
a supply of atomised oil being introduced into the combustion
chamber. Ignition then occurs, followed by a post-ignition
period of approximately 20 seconds.
(f) Your boiler is now in a steady run condition and will remain so
until the water temperature reaches the temperature set on the
control thermostat. At this point the burner will stop and the
boiler will shut down. The sequence will continue until the
boiler is programmed - either manually or by an automatic
programmer - for a period of shutdown.
During normal operation your boiler can be switched off at
the programmer, where fitted, or at the control switch provided by
your installer. When the heating system is not being used during
the winter period your boiler should be protected by a frost
thermostat. Consult your installer if you are unsure! If a frost
thermostat is not fitted, set the temperature control knob to
minimum and leave the boiler running on low output.
To switch off your boiler for long periods, turn off the mains
electricity at the isolator switch and, during periods of cold
weather, drain the heating system.
TO SWITCH OFF YOUR
BOILER
Fig. 1. Control Facia
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