13
Operating instructions
6.5 - COMBUSTION AIR ADJUSTMENT
PRIMARY AND SECONDARY AIR ADJUSTMENT
The GASOGEN G3 25/ and 50 2S models are equipped
with a fan control box for combustion air (pos. 1), with an
air distributor, and with primary (pos. P) and secondary air
adjusters. (pos. S).
The GASOGEN G3 65 2S and GASOGEN G3 80 2S models
are equipped with two fan control boxes for combustion air
(pos. 1), the top one (P) for the primary air inlet and the
bottom one (S) for the secondary air inlet, air distributors,
and metal ring adjusters. (pos. 1).
During the first ignition it is necessary to adjust the primary
and secondary air, keeping in mind that the primary air
determines the boiler’s output and therefore the quantity of
wood bur nt, whilst the secondary air completes the
combustion.
P = Primary air box
S = Secondary air box
1= Metal ring air adjuster
P
S
1
S1
P1
S
S
P
P1
C
USEFUL SUGGESTIONS and LOADING ERRORS
TO BE AVOIDED
- Logs too long do not fall down properly and can cause ob-
structions.
- Logs too short cause irregular air passages, with consequent
reduction in output and efficiency.
- In case the quality of the wood causes “obstructions” it could
become necessary to cut the wood logs in two parts in order
that the total length “L” is as indicated in the previous para-
graph.
- Always open the upper door slowly in order to avoid blow-
backs and smoke formation.
During normal boiler operation it is absolu-
tely forbidden to open the lower combustion
door.
CUT
C
Fan control box
S
Secondary air adjusting screws
P
Primary air adjusting screw
P1 Primary air passages
S1 Secondary air passages
