PV 100a
•
If there is not sufficient (less than 5Pa) negative pressure in the furnace, a draught fan should
be installed for the exhaust gases.
•
The boiler room where the burner is installed must fulfill all rules and recommendations
given by authorities.
•
The boiler must be positioned in a way that there is enough space for cleaning the burner,
the boiler and the smoke pipe and removing the ash.
If flue gas temperature at the top of the chimney is less than 80C
o
, there is a risk of condensation. In
this case a pipe should be installed throughout the length of the chimney.
Note:
It is recommended to use a flue gas analyzer for adjusting the burner. The burner must be
adjusted using the flue gas analyzer also when you change the size or the quality of the pellets.
Boiler requirements
Pellet burners need regular cleaning and therefore boiler construction must allow the door to be
opened without removing the burner. The minimum size of opening in boiler depends on the
position of door hinges and vice versa. Figure 3 below illustrates the situation. Point C is critical.
In order to keep door width minimum and boiler opening small, a double hinge solution can be used.
As double hinges add another degree of freedom, door must be fastened on both sides. Slide-out
doors with guide rails is also an option.
Figure 3 Hinge position and boiler opening size considerations
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