Bosch Condens 2000F30 Regular boiler - Fan Assembly

48 | REPLACEMENT PARTS
Product Name6 720 ... ... (YYYY/MM)
Fuse
▶ Release the three screws [1] securing the installer cover.
▶ The spare fuse [2] is located in the inside of the right hand corner of
the cover.
▶ The fuse holder [3] is located at the top left hand corner of the
terminal block.
Fig. 65
PCB access
▶ Unclip the covers [1] and [2].
▶ Disconnect all electrical connections from the control.
▶ Remove the screws [3] retaining the rear panel of the control and
remove the panel.
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio”.
Fig. 66
11.1.2 Fan assembly
Refer to figure 67
On all models, except the 16kW versions, the air intake pipes will have to
be removed:
▶ Remove the air intake pipes from the mixing chamber, pull down to
disengage and remove.
▶ Undo lower pipe union on gas pipe [1].
▶ Push the pipe [6] up into the mixer assembly [5] until the pipe clears
the valve connection.
▶ Pull the pipe [6] towards you, away from the gas valve and slide the
pipe out of the mixer unit.
▶ Remove fan lead and earth connector.
The earth connector has a positive clip fixing.
▶ Remove fixing screws [2] attaching fan to the burner cover [3].
▶ Remove fan [4] and mixer unit [5].
▶ Twist mixer unit [5] to separate from the fan (assembly [4].
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio”.
Fig. 67 Fan removal - 42kW version shown
Flap Valve:
Refer to figure 68
On all models, except the 16kW versions, the air intake pipes will have to
be removed:
▶ Remove the air intake pipes from the mixing chamber, pull down to
disengage and remove.
▶ Undo the lower pipe union on the gas pipe [1].
▶ Push the pipe [6] up into the mixer assembly [5] until the pipe clears
the valve connection.
▶ Pull the pipe [6] towards you, away from the gas valve and slide the
pipe out of the mixer unit.
▶ Twist mixer unit [5] to separate from the fan assembly[4].
▶ Remove flap valve [7] from within fan assembly [4] and replace.
▶ After re-assembly check that the CO/CO
2
levels are as described in
the section “Setting the air/gas ratio”.
Fig. 68 Flap valve removal
3
1
2
6720809859-43.1Wo
6720809859-21.1Wo
1
2
3
3
Ensure the flap valve is fitted correctly with rubber flap
upwards.
6720809859-36.1Wo
2
3
4
5
7
1
5
4
6
7
6720809859-38.1Wo