5
The boiler need to be installed with cooling valve e.g. DANFOSS BTVS
¾
and heating system by
pressure valve.
CAUTION
When you fire up a new boiler for the first time, condensation and discharge of the condensate from the
boiler may occur - this is not because of any defect in the boiler. After a longer duration of operation the
condensation will disappear.
Firing Up and Operation
Prior to lighting, the heating system’s shut-off valves need to be opened. Open to the maximum possible
the air intake throttle valve on the ashtray door. Paper and smaller wood chips should be loaded on the grate first.
Light the paper and shut the door. Once the paper and chips burn sufficiently, add pre-prepared wood intended for
fuel purposes. Once the fire is established (fuel sufficiently burning), the air intake throttle valve should be
throttled (adjusted using the adjustment screw) to the minimum possible opening of approx. 5 mm. Using the
button on the thermostatic draught control unit, adjust the required boiler operating temperature. When the boiler
is fired for the first time, the thermostatic valve should be calibrated – see section ‘Calibration’. During firing, the
chimney damper must be fully open. It is important to adjust the damper for the appropriate chimney draught
during the burning process.
If necessary, and depending on the burning intensity, the boiler needs to be refueled, from time to time,
during the operation; fuel should be added in such a manner so that fuel layers are evenly positioned in the
combustion space. Also, the boiler’s condition and the burning efficiency should be visually checked; where wood
chips are used as fuel, even spacing should be maintained in the longitudinal direction. Upon switching to a
damped night mode, the grate should be cleaned and cause the freshly added fuel to kindle to provide proper fire.
Afterwards, change to a lower temperature using the thermostatic control unit.
RT3 Draught control unit Calibration
Re-fire the boiler with the door open (open it manually). Using the control unit’s button, adjust temperature
to 60 °C. When the water temperature reaches 60 °C, allow several minutes for temperature to stabilize and adjust
the chain attachment so that the door remains open approx. 1 to 2 mm. Now you can select the desired
temperature. If, during operation under steady conditions, the boiler temperature is found to be lower than the
adjusted temperature, shorten the chain; and vice versa, if the boiler temperature is found to be greater than the
adjusted temperature, extend the chain. It is also important that you take into account other factors that might
affect the boiler temperature irrespective of the temperature control unit status – such as the amount of fuel and ash
within the boiler, the secondary air throttle position, and thermal inertia. See the operation manual for draught
control unit.
Boiler Cleaning
The ashtray should be emptied as necessary; please note that if the ashtray space becomes overfilled,
the air flow into the firing space is restricted, thus causing poor wood burning efficiency. In the event that
the ashtray space becomes obstructed (or completely blocked) with tar deposits, the deposited material
must be removed manually.
Control and Safety Elements
The chimney damper allows you to adjust the optimum chimney draught. We recommend that chimney
draught be adjusted to 0.15 mbar. The chimney damper is actuated using a handle located on the flue inlet
connection.
The combustion air intake throttle is located on the ashtray door and is actuated automatically by the
thermostatic draught control unit; depending on the heated water temperature inside the boiler heat exchanger and
the manually adjusted temperature, the thermostatic control unit determines the amount of air flowing into the
combustion space.
