Operating instructions

19
Operating instructions
WOOD FIRED BOILER WITH OPTIONAL CON-
TROL PANEL:
Problem:
- The fan does not start
Remedy:
- Adjust the working thermostat (pos. 32), turning the knob in a
clockwise direction to maximum.
- Reset the safety thermostat (pos. 31).
Problem:
- The fan starts, but after 30 minutes it stops; by switching
OFF and ON the main switch (pos. 11) it re-starts.
Remedy:
- Increase the TIMER 1 intervention time (this operation has to
be carried out by the After Sales Service or by authorized trai-
ned personnel after switching OFF the mains supply).
Problem:
- When opening the loading door there are blowbacks and flue
formation.
Remedy:
- Open the door slowly.
- Use wood with a higher moisture content; make sure the boi-
ler does not remain unused for long periods (see paragraph
6.7).
- Use bigger logs.
- Use up all the wood before loading a new batch
Problem:
- The boiler does not reach the requested temperature.
The flame is small and there is too much air.
When the fire box is checked a formation of log bridges is found.
Remedy:
- Check the length of the wood logs (see paragraph 6.4).
- Check how the wood logs are loaded in the fire box (see
paragraph 6.4).
- Cut the logs in two parts (see paragraph 6.4).
- Use smaller logs (round or square, 5 to 7 cm diam. )
- Mix medium-large sized logs (15-20 cm diam.)with small si-
zed logs (see previous point).
Problem:
- The boiler does not reach the requested temperature. The
flame is too small.
Remedy:
- Check if the by-pass is closed.
- Check the fan
- Check if the doors are properly closed
If you cannot solve the problem, do no attempt
any other interventions and contact an autho-
rized UNICAL After Sales Service.