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10. SPACE HEATER INSTRUCTION 17684/17685
10.1 IGNITION SYSTEM
Ignition is automatic with this heater as soon as the gas valve button is depressed, with a
continuous spark from the spark plug igniting the gas. As the thermocouple heats up, a low
voltage is fed to the Flame Failure valve, causing the valve to open, so that after a few seconds,
the gas valve button may be released and the flame is established.
10.2 SAFETY CONTROL SYSTEM
Should the flame extinguish for any reason, the thermocouple will quickly cool, causing the Flame
Failure valve to close, shutting off the gas supply. Similarly, should there be a power failure,
causing the fan motor to stop, the Safety Shut-Off valve solenoid will become de-energised, and
therefore shut off the gas supply.
Additionally, the machine is equipped with thermal overload protection, which will intervene should
the/unit overheat shutting off the electrical supply.
10.3 STARTING PROCEDURE
WARNING: BEFORE STARTING THE HEATER, YOU MUST ENSURE THAT THE MINIMUM
VENTILATION REQUIREMENTS ARE OBSERVED TO AVOID THE RISK OF CARBON
MONOXIDE POISONING.
1. Ensure there is sufficient gas and that it is correctly connected.
2. Open the supply valve on the gas cylinder, and fully open the regulator valve adjacent to the
gas inlet pipe.
3. Plug the heater in to a suitable power supply.
4. Set the flame temperature, to a low setting.
5. Set the power switch to the ON (I) position. Confirm the fan operates.
6. Hold in the control valve button, until the thermocouple is energised and the heater ignites.
7. If the heater fails to ignite, there may be air in the hose so keep the fuel valve open and wait
for about 15 seconds. Walt 30 seconds for unburned fuel to exit the heater. Repeat the step
above.
8. When the burner remains lit set the heater at the required level by turning the flame intensity
control valve counter-clockwise. If the burner goes out. turn off the gas. Turn the gas valve
fully clockwise to its lowest position. Check the fuel supply. If adequate fuel is available,
re-start the heater from step 1.
Should the flame extinguish when the ignition button is released, wait for 1 minute, before
repeating the operation.
• Turning the flame intensity control valve anti-clockwise will increase the gas supply and
therefore the output clockwise to decrease. If ignition is difficult or irregular; ensure the fan
is operating and that the air inlet and outlet are completely clear. Also ensure that the
electrode gap is correct and that the electrode is clean (see Maintenance).
Important: Should the thermal overload protection feature operate and the spark plug is seen to
be operating, shut off the gas supply and allow the unit to cool for at least 10 minutes with the fan
running, before attempting to relight the burner.
Should the flame safety valve operate, the heater may be restarted once the cause of the problem
has been found and rectified.
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