54
MYDENS 60
COSMOGAS
8 - MAINTENANCE
8.3 - Removing the burner fan unit
Proceed as follows to remove the burner fan unit (refer to
figure 8.2 when not differently specified):
1.- access the internal components following chapter 8.2;
2.- remove the air manifold (detail “C” in figure 6.2) rotating
it towards the outside of the boiler and then pulling it
towards the right (see figure 6.2);
3.- unscrew nut “C” from the valve “D”;
4.- disconnect the cables “B” and the detection cable from
the ignition and detection electrodes (details “8”, “36” and
“37” in figure 3.1);
5.- unscrew the four nuts “E”;
6.- extract the group “F” as per figure;
Figure 8.2 - Removing the burner fan unit
G
C
B
E
A
F
D
020005.01.008
8.4 - Cleaning the burner and the
fumes side primary heat exchanger
To correctly clean the burner and body of the heat
exchanger (fumes side), proceed as follows (refer to figure
8.2 when not differently specified):
1.- access the internal components following chapter 8.2;
2.- remove the burner unit following chapter 8.3;
3.- pass a cylindrical brush with plastic bristles inside the
combustion chamber “G”
4.- use a suction device to remove the unburned residues
present inside the combustion chamber “G”;
5.- use the same suction device on the surfaces of the
burner and around the electrodes;
6.- re-mount the components in reverse order;
7.- open the gas cock;
8.- restore the electric power supply.
9.- check that there are no gas leaks between the joints
removed;
ATTENTION !!! Perform the leak test using a soap
and water only. The use of naked flames is prohibited.
