©
EUROHEAT
DISTRIBUTORS (H.B.S) LTD April 2007
15
E&OE Instructions Part Number IN1190 Ed B
H11##0105A
The electric ignition system operates by heating a small electric heating element positioned in the
bottom of the burner. Oil entering the burner is drawn by capillary attraction into stainless steel gauze,
and then heated to its ignition temperature by the heating element. The coil is energised for the period
that ignition button is pressed.
Common reasons for ignition to fail
Electrical cable not connected
Oil supply switched off
Burner has large amount of oil in the base
Stove not level
Igniter leads at the transformer poorly connected
Electric Ignition
Stove and burner must be level
If the oil burner is not level as oil enters for ignition
it will flow away from the igniter. This oil will build
up until it finally reaches the igniter. This will result
in long ignition times and excessive oil at ignition.
Excessive oil will cause large flames, soot and
very noisy operation.
Oil Metering Valve
The oil metering valve is set to give the correct flow rates before being fitted to the stove and will not
normally require further adjustment. Any but a small adjustment should be regarded as an indication
of a fault of the fuel supply, or of a flue system giving an incorrect negative pressure within the stove,
and these should be examined thoroughly before attempting to re-calibrate the oil metering valve.
The oil metering valve performs three operations within its main body; it regulates with a float valve
the depth of oil held, it meters with an adjustable outlet the fuel supplied to the burner, and its safety
float valve will isolate the fuel should the levels within the valve body become too high.
The safety float will cause the arming lever to “trip” whenever the fuel levels become too high, but
severe vibration can cause ripples on the fuel surface to lift the float, and because of this it is possible
for the vibration set up by heavy passing traffic to shut off the valve.
Having “tripped”, resetting the arming lever may need to be done several times before the fuel
level within the valve falls sufficiently to allow reliable operation.
The firing rate of the burner is regulated by the oil metering valve and having set the extremes of
low and high firing as detailed in the commissioning instructions, the firing rates are proportioned as
indicated by the indices 1-6 on the valve top when aligned to by the control knob.
Most common problems
The Toby oil control is a very reliable Swiss made control system. If a problem with the oil flow is
suspected it is very unlikely to be the control valve.
The most common reason for poor flow rates will be air trapped within the oil supply pipe or the oil
valve float control stem. If an air lock is suspected the oil line should be disconnected from the oil
valve and at least 1 litre of oil allowed to flow after no air is present.
If an air lock is suspected in the oil control valve, remove the top plate mounting screws and press the
float assembly to the base of the oil control for 2-3 seconds. This will fully open the oil level metering
stem releasing trapped air.
