Flues and options.

Stainless steel flues.

These are the most popular as they are easy to erect with unskilled labour and without scaffolding.
They are supplied to order complete with bracket, bottom connector and top stub. Most Dragons require 200mm inside diameter flue-pipe. The smallest Dragon will need 150mm.

Pummice Flues.

These are supplied in 600mm lengths to line an existing flue or they are available as a complete block, 300mm high that can be skimmed or rendered to match the property.

Accumulator tanks.

An accumulator tank is an insulated tank that acts as a heat reserve and is used with a big-bale system to obviate the inconvenience of midnight loading. The tank is filled with a reservoir of hot water to maintain the heat through the night and loading waits until the next morning. An inexpensive alternative to this is a second-hand milk tank, which of course will come with its own insulation.

Afterburners.

An afterburner is a special chamber fitted to the exhaust which contains a gas or oil fired burner. The exhaust gases pass through the afterburner and any residual gases are fully consumed, thus completing the burning process. This is especially useful if there is plastic or painted timber in the fuel supply. Afterburners will eliminate most of the smoke from the exhaust gases.

Legs.

Dragon heaters can be supplied with legs if required. These will lift the Dragon from the floor and give sufficient height to rake the ash straight into a wheel-barrow. These legs can be either welded into place at the time of construction, or they can be bolt-on legs to be fitted on site.

Furnace Fan.

A furnace fan and ash-rake are supplied with each Dragon in the quoted price. We can also supply Pigtail thermostats where they are required for special situations.
Water filled furnace door:-Having a water jacket fitted into the furnace door increases the efficiency of the Dragon by increasing the area of heat transfer. However, it is really only worth fitting these to the largest Dragons.

Inspection door.

A small inspection door of fireproof glass allows you to see the fire chamber. A damper fitted on the inside helps to reduce sooting of the door and obscuring visibility.

Loading door.

This will enable wood to be loaded without losing the furnace temperature and causing smoke. It is worth noting, however, that if the Dragon is correctly sized, loading can be reduced to once per day, obviating the need for constant opening of the door.

Incinerator grate.

An incinerator grate lies in the furnace and can hold fallen stock. This is an inexpensive way of dealing with the carcass problem. If there are unburnt elements, they remain on the grate until the next firing.

Storage silos.

These come in all sizes to hold a day, week, month, or more of fuel. They can be supplied for either gravity emptying or mechanical emptying for material that does not flow easily.

Electronic control.

Particularly useful for big bales where, instead of the fire starting at the bottom and creating smoke as it passes over the damp bale, the burning proceeds briskly at the top of the bale and as the straw burns, the air is channelled lower as burning proceeds.

Prefabricated housing.

This ranges from a complete cabin with the heater all ready to plug in and go, to a simple barrier to prevent the equipment being tampered with.

Elevators and conveyors.

Elevators and conveyors come in all kinds of sizes and widths. They can be fitted with manual or automatic controls and there is a full range to suit every Dragon.

Waste oil burners.

A new line of heaters imported from the USA for use with waste oil, the objective being to reduce the disposal charges of fossil fuels.