5
BOILER TECHNICAL SPECIFICATION
11
FIREBIRD ‘S’ RANGE
BOILER THERMOSTATS - FUNCTION
The CONTROL THERMOSTAT [1] on the boiler allows the householder to vary the water flow
temperature from a low of 60˚C to a high of 80˚C to 82˚C, depending on the model.
In accordance with EU boiler standards, your boiler is also fitted with a SAFETY HIGH LIMIT
THERMOSTAT [2], fixed at 114˚C. This system protects the boiler in the event of the control
thermostat failing and keeps the boiler safe. The safety high limit thermostat [2] will shut off the
boiler and will require the limit button to be pushed to restart the boiler. If the problem re-occurs,
you should call your service engineer.
In cases where the flow from the boiler is down to the heating system, fitting a PUMP O
VER RUN
THERMOSTAT [3] (A Pipe Stat) is recommended. This is to prevent the residual heat build up in
the boiler from unnecessarily activating the high limit thermostat and thus causing nuisance.
See Heat Pac Wiring Diagram in Installation Instructions on page 16.
PLASTIC PIPING -
WARNING
The boiler thermostat control and safety system is not designed, and must not be relied on, to
protect plastic pipe from overheating. Plastic pipe must never be connected directly to the
boiler.
If you choose to use plastic pipe anywhere on your hot water circuits, then please consult the
plastic pipe manufacturer for their instructions on how to ensure their product never overheats.
Our boiler control and safety high limit thermostats are not designed to fulfil this function. (They
may suggest the fitting of independent pipe thermostats, or thermostatic mixing valves linking
flow and return).
• Firebird accepts no responsibility for failure of plastic piping and fittings for what ever reason.
TIME AND TEMPERATURE CONTROLS
The Building Regulations state that central heating systems must have time and temperature
control on the pipe circuits (eg Thermostatic Radiator Valves / TRVs, Room thermostats, cylinder
thermostats etc.) on both fully pumped and semi-gravity systems.
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