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Rayburn Royal OF22
 Early model with single cover |
 Later model with optional plinth |
The Rayburn Royal OF22 was introduced in 1971, as a continuously burning appliance which had the benefit of providing a small amount of central heating as well as cooking and domestic hot water, by means of twin vapourising burners.
Available initially in both left or right-handed oven options, with a single, enamelled insulating cover, later changed to two separate covers in later models and the left hand oven model dropped.
Designed for use on 28sec kerosene and producing a maximum 27000 BTU/Hr (8KW) of heat to water. Having two independent vapourising burners, the appliance could be used in the following ways : --
Summer. Cooking using one burner, which also provided domestic hot water (between 0.7KW and 2.3KW, depending on oven temperature)
Winter. Cooking and domestic hot water (as summer) together with central heating from the second burner (5.7KW). This output would provide heat to approx. 11sq. metres of radiator surface.
Domestic hot water was provided by gravity circulation, whilst the central heating system utilised a circulating pump (usually on the return pipe to the boiler). It was recommended that a 140 Litre (30 gallon) indirect cylinder be fitted. Controls such as time switch, cylinder thermostat, clamp on thermostat could be linked to the circulating pump.
Control of temperature:
Cooker. The oven and hotplate temperature vary by alteration of the graduated control knob on the oil control valve. This allowed a variation of the fuel flowing into the continually burning burner.
Heating. By alteration of the boiler thermostat, again on the oil control valve, the amount of hot water for heating could be varied. The boiler side burner could be turned off during the summer by operating the manual control on the oil control valve.
An adjustable air inlet plate had to be set in a particular position, dependent on whether a single, or both burners were in operation, as also did the chimney flue damper.
Optional extras included a splash-back, plate rack and plinth.
Manufacture ceased in 1993, when the model was replaced by the similar Rayburn 222K.
See also Rayburn 222K