2
OPERATING INSTRUCTIONS
4
2-B: Operating Procedure
(All models)
To start the boiler follow this sequence:
Turn on fuel supply.
Switch power supply to boiler ‘ON’.
Remove front cover (see diagram C)
Set the boiler thermostat to the required
temperature. The boiler thermostat controls the
boiler operation by automatically maintaining
the required boiler water temperature output.
Safe operation is also maintained by the burner
control system which provides the required ignition
and shut off sequence. If the optional timer
control is fitted this will automatically switch the
boiler off and on when heat is required.
The boiler can be turned off by any of the following means:
Turn the timer control (if fitted) to OFF.
Turn OFF the mains electrical supply to the boiler.
When servicing always switch off the mains supply to the boiler.
WARNING
Re: Wiring of boiler
In the situation where the primary flow from the boiler is plumbed down to connect with the heating system,
the fitting of a pump over run thermostat ( A Pipe Thermostat) is recommended.
This is fitted as standard to Firebird System Boliers.
A 4-cor
e cable should be used in this case to supplying power to the unit. The fourth wire in the 4-core cable
can be used to bring a seperate power supply to power the circulating pump, through the over run thermostate.
This will keep the circulating pump running after the power supply controlling the boiler has been switched off,
therefore not allowing a residual heat build up in the boiler activating the safety high limit stat.
2-A: Boiler Controls
High limit stat activated (amber)
Mains ‘on’ (green)
Pressure gauge
Dual
Thermostat
Burner
Plug
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