Technical data

DBW 2010 / 2012 / 2020 / 2022 / 300 / 350 9.The Repair
913
9.2.5 The replacement of the fan thermostat
9.2.5.1 Dismounting
1. Remove the nut (4, Figure 901) and take off the
protection cap (3).
2. Cut off the electrical connection of the fan thermostat
(9).
3. Take off and remove the fan thermostat from the
angle bar (5).
4. Apply the measures pertaining to the elements in
dismounted status (refer to 9.1.1).
9.2.5.2 Mounting
1. Screw the fan thermostat (9, Figure 901) manually to
the angle bar (5).
2. Install the electrical connection.
3. Put on the protection cap (3) and tighten it with the
nut (4).
9.2.6 The replacement of the fuse element
9.2.6.1 Dismountung
1. Remove the nut (4, Figure 901) and take off the
protection cap (3).
2. Cut off the electrical connection of the thermal fuse
element (7) in the connection block (2).
3. Remove and take off the thermal fuse element
manually from the plug (6).
4. Apply the measures pertaining to the elements in
dismounted status (refer to 9.1.1).
9.2.6.2 Mounting
1. Screw the thermal fuse element (7, Figure 901)
manually to the plug (6).
2. Install the electrical connection.
3. Put on the protection cap (3) and tighten it with the
nut (4).
9.2.7 The replacement of the control device
9.2.7.1 Dismounting
1. Remove the socket (1 or 3, Figure 901) in the control
device.
2. Push the catch between the control device (1 or 3)
and the protection cap (4) using a proper tool (for
instance a screwdriver) in the direction of the control
device and remove the control device in the direction
of its axis.
3. Expand the attachment wire (2) in the control device
1553 to the side, if necessary, and pull the control
device forward.
4. Apply the measures pertaining to the elements in
dismounted status (refer to 9.1.1).
9.2.7.2 Mounting
1. Slide the control device 1563/64 (3, Figure 902) or
the control device 1553 (1) with the attachment wire
(2) sideward in the protection cap (4) guide and push
until it leans on the wall.
2. Install the socket in the control device.
9.2.8 The replacement of the burner head
9.2.8.1 Dismounting
WARNING
The socket connections must be marked or a note should
be made before the connections between the socket
connections or cable bunch and the measuring and
regulation sensors are removed.
1. Separate the socket connections of the measuring
and regulation sensors on the heat exchanger and
remove the cable bunch.
2. Remove the fuel lines if necessary.
3. Loosen the nuts (2, Figure 903) until the bolts can be
opened to the side.
4. Turn the bolts (3) to the side and remove the cotter
pin (1).
5. Take off the burner head (4).
6. Apply the measures pertaining to the elements in
dismounted status (refer to 9.1.1).
9.2.8.2 Mounting
1. Get the burner head (4, Figure 903) in the assembly
position, turn the bolts (3) inside and tighten the nuts
(2) manually.
2. Install the cotter pin (1) in its place in accordance with
the opening direction that has been foreseen and
secure it.
3. Turn the bolts (1) toward inside and tighten the nut (3)
manually in order to prevent one-sided coercion.
3 Tighten the nuts (3)
- with 5.0 Nm + 1 Nm at DBW 2010 / 2012
- with 8.0 Nm ± 10 % at DBW 2020 / 2022 / 300 / 350
4. Install the fuel lines if necessary
5. Make sure that electrical connections are sound.