BOILER START-UP
21
boiler walls, it means that the pump operation starts at a low temperature or the fuel has too
big humidity content. Make sure you set the pump according to the indications and you install
a return temperature protection system as indicated.
6.4.
Fuel loading
In order to correct add fuel to the boiler follow the next steps:
Stop the fan function by turning the fan thermostat to zero. Wait 30 seconds for the fume to
exit the boiler.
Open the middle door slowly to avoid leakage of smoke. Load a sufficient amount of fuel.
Each loading should be regulated according to the boiler output and the heat demand.
Never load too much to fuel to fill all the fire chamber volume! Maximum fuel should be 70-
80% of the fire chamber volume.
Close the door and secure with the handle.
Start again the fan function by putting the thermostat to the preset temperature.
When loading fuel in the boiler do not throw them but position them carefully.
6.5.
Combustion regulation
After completing the start-up procedure and closing the door, set the required temperature to
the furnace thermostat (noted “Motor Regul”). After the fan and motor are activated, have a
look at the quantity of fuel fed to the furnace and the shape of it on the cast iron plate.
The timer must be set in such a way, so that the quantity of fuel fed is stable to a level where
it makes a small hill over the plate, covering almost half of its surface (middle picture). If the
fuel accumulates covering all the plate surface (left picture), it means the feeding is too big
and must be reduced. If the level of the fuel is below the plate (right picture), it means the
feeding is too small and must be increased.
Fig 9.
Fuel feeding regulation
The feeding depends on two parameters: the feeding time (timer T1) and the stop time (time
T2). When you want to increase the feeding, increase the feeding time and reduce the stop
time. When you want to reduce the feeding, reduce the feeding time and increase the stop
time. These two timers must be set together, and with not too big difference (the ratio
between TIME ON/TIME OFF must be between 0,5-0,9). This way you achieve a stable feeding
and fire in the furnace.
After regulating the feeding, observe the flame shape and color through the flange provided on
the middle door. The flame will have to occupy about two thirds of the fire chamber and quietly
lick the cylindrical heat exchanger. Its shape must be fully developed and with not too many
detachments at the flame end. Its color must be vivid orange-yellow, not too transparent.
The combustion quality is regulated through the air delivery. By positioning the fan damper
you regulate the air pressure and by the control panel speed regulator you regulate the fan
