OPERATING INSTRUCTIONS
Setting the thermo-regulator (thermostatic controller for combustion air)
Mechanic type thermo-regulator is mounted on top of front section in vertical position. In vertical operation of thermo-
regulator, red coloured numbers show the requested heating temperatures. After assembly of thermo-regulator body,
place the lifting rod for regulator.
Load the boiler and fire. Wait until the boiler temperature reaches 60 C. Set the thermo-regulator to 60 C. Attach one
end of thermo-regulator chain to primary air damper. Attach the other end the chain to lifting rod of thermo-regulator,
and stretch the chain, leaving 2 mm space between primary damper and air inlet of front door.
Pre-firing checks
Before the first operation of boiler right after installation, the hydraulic circuit must be ready for operation. To fill an open
vented circuit, the valve on start level line from expansion tank is opened, and the circuit is filled with main supply
water. During filling the system all valves and accessories on the lines must be checked for leakage. Filling is
stopped, when water from start level line is observed, closing the valve on this line. Right after that,the hydraulic
pressure is marked on screen of the hydrometer. This will make re-filling operations during heating season much
easier, just feeding the system with fresh water until the hydraulic pressure on screen reaches the pre-marked value.
Before every firing make sure that;
* Boiler and circuit are filled with water, and the hydraulic pressure is in the required range.
* All valves on the line (except by-pass lines and start leve line) are in open position.
* There is enough draught in chimney.
To fill a pressurised circuit, feed the fresh water from main supply line using either the filling/drilling tap connection on
the boiler rear sectiion, or the feeding line constructed within the circuit. To purge the air contained in the system, use
air relief valves on the hydraulic circuit, on the radiators, and also spring pressure relief valve at boiler hot water outlet.
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Firing
* Set the Kindling. Place firestarters, crumpled newspaper (3 or 4 sheets balled up fairly tightly) on the grate
of the boiler. Place small kindling over the paper or starter. The more dry, small kindling you have - the easier and
better the fire will start. Crisscross the kindling so there is plenty of air space in between each piece.
Wood that is packed too tight will not burn properly.
* Set larger wood on top of the kindling, and continue to set larger and larger pieces on top until
the fuel exceeds the 1/3 level of the filling chamber.
* Ensure that the primary air and chimney dampers are open. Then light the newspaper on the bottom
* After first ignition, switch the circulation pump on, and adjust air damper. Set mechanic thermo-regulator to desired
temperature.
* The fire should be well established within approximately 15 minutes, then filling chamber can be loaded completely
but check to make sure that the firelighters have not been extinguished.
* Keep the fire going Always keep a “flame” on your fire - a smoking or smoldering fire is a cold and inefficient fire
and also produces pollutants and creosote (tar in the chimney)
Firing with wood
Please follow the recommendations to increase the performance of the boiler:
* When firing wood, you can keep the secondary air damper closed, and increase the burning period of the fuel inside
the combustion chamber.
* If your chimney draught is sufficient you can keep the flue damper on the smokehood 1/2 or 2/3 closed after the first
ignition of the wood logs.
*If you have low fire or smaller fire bed, you can fully close the air damper
Front secondary air
OFF
Front secondary air
ON
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Front secondary air
OFF
Front secondary air
ON
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Summary of Contents for DUNATECH 2012
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