Features

1. Advanced Combustion technology. NOT AVAILABLE IN ANY OTHER MAKE OF APPLIANCE
2. Overall Efficiency far greater than with conventional solid fuel technology.
3. Boiler Outputs to suit actual practical requirements. Conventional stove boiler outputs of the order of 40,000 BTU/hr are totally inadequate for most practical applications which normally require at least 55,000 BTU/hr.
   • The Super Demon gives you the following boiler capacity:
   • 60,000 BTU/hr on wood
   • 75,000 BTU/hr on solid fuels
   • The unit may be operated at any loading from 15,000 BTU/hr to the above maxima; with lower loadings you merely burn less fuel.
4. Unique Upware Flowing Airwash System to keep door glass clear and to provide pre-heated secondary air to the secondary combustion zone.
5. Ease of Cleaning of heat exchanger surfaces and facility to sweep vertical flues, thereby avoiding the need for soot doors on internal chimneys.
6. Boiler Design that has eliminated the problem of pyroligneous and sulphuric acid corrosion that shortens the life of conventional multi solid fuel boilers.
7. Fully Multi Solid Fuel Riddling Grate with ashpan.
8. Thermostatic Control of primary air supply.
9. Very Ruggest Cast Iron and Steel construction for Long Life.

Design Criteria

Conventional Multi Solid Fuel Appliance Design

The Boiler consists of a simple wrap around boiler with a thermostate controlling the total air supply.

Such designs are limited to practical boiler outputs of the order of 40,000 BTU/hr on solid smokeless fuels and less on wood.

It is quite obvious that the designs are relatively inefficient as when operating at these outputs the flue gas temperatures are of the order of 400 to 500 deg C, particularly when burning volatile fuels.

When the thermostat is closing it restricts the supply of air to the fire so that any volatile components of the fuel pass into the flue in a partially burnt state. This leads to carbon and hydrocarbon deposits known as soot and tar. Rather like controlling your car engine using the choke.

From the practical operation of these designs with volatile content fuels, the deposits of soot and tar are unavoidable and in some cases constitute a considerable fire hazard.

Another disadvantage of this type of design is the production of pyroligneous and sulphuric acids during the oxygen starved part of the combustion process.

This acid attacks the boiler surfaces and leads to premature boiler failure which has been the Achilles' Heel of the conventional multi fuel boiler designs. This has now been proven beyond doubt and has led to the demise of a large number of the companies manufacturing the conventional designs. Continued…