Technical data
9.The repair DBW 2010 / 2012 / 2020 / 2022 / 300 / 350
920
9.2.19 The replacement of the heat exchanger
9.2.19.1 Dismounting
1. Take off the nut (6, Figure 908) from the cap (5) if
necessary and remove the cap.
2. Dismount the heat constrainer or thermal fuse (refer
to 9.2.1.1 or 9.2.3.1).
3. Dismount the heats sensor (refer to 9.2.2.1).
4. Dismount the thermal fuse element if necessary (refer
to 9.2.6.1).
5. Dismount the regulation thermostat if necessary
(refer to 9.2.4.1)
6. Dismount the fan thermostat if necessary (refer to
9.2.5.1)
WARNING
The work steps 7 and 8 apply only DBW 2010 / 2020 /
300 / 350 that are not sensoric.
7. Remove the bolt (4) and take off the console (3)
together with the electrical connections.
8. Remove the plug (7) and take it off together with the
angle bar (8).
9. Dismount the burner head (refer to 9.2.8.1).
10. Take off the combustion chamber (1) from the heat
exchanger (2).
11. Take off the heat exchanger (2).
12. Apply the measures pertaining to the elements in
dismounted status (refer to 9.1.1).
9.2.19.2 Mounting
1. Install the combustion chamber (1, Figure 908) on the
heat exchanger (29 all the way to the end.
2. Install the burner head (refer to 9.2.8.2).
WARNING
The work steps 3 to 6 apply only to the DBW 2010 /
2020 / 300 / 350 devices that are non-sensoric.
3. Bring the angle bar (8) in the assembly position and
screw the plug (7).
4. Tighten the nut manually.
5. Bring the console (3) together with the electrical
connections in the assembly position and fixate it with
bolt (4).
6. Tighten the bolt manually.
7. Install the heat sensor (refer to 9.2.2.2).
8. Install the heat constrainer or the thermal fuse (refer
to 9.2.1.2 or 9.2.3.2).
9. Install the thermal fuse element if necessary 8refer to
9.2.6.2).
10. Install the regulation thermostat if necessary (refer to
9.2.4.2).
11. Install the fan thermostat if necessary (9.2.5.2).
12. Install the protection cap (5) if necessary and tighten
it with a nut (6).
Figure 908 The replacement of the combustion chamber and heat exchanger
WARNING
The combustion chamber and heat exchanger
of the DBW 2010 heating devices in the figure.
1 Combustion chamber
2 Heat exchanger
3 Console
4 Bolt
5 Cap
6 Nut
7 Plug
8 Angle bar