Bosch Worcester 14/19CBI Installation And Servicing Instructions page 29

15.4.5 Control Board
Lower the base plate/control assembly and carefully disconnect
the plug-in connector and all the electrical connections. Refer to
Fig. 35.
Release the five clips and lift out the control board. Refer to Fig. 35.
Pull out and replace, if necessary, a failed fuse.
Fig. 37 . Fan/Flue hood Assembly with
4 ( )
(clear tube)
3 (+)
(red tube)
Fig. 37a . Fan/Flue hood Assembly with Rear Only Flue
6
9
1
10
8
5
7
2
15.4.6 Fan
Remove the inner casing and combustion chamber cover .
Remove the fan as described in Section 14.3 Inspection and
Servicing. The flue hood gasket should be replaced if it is
damaged or has deteriorated.
Ensure that all the connections are correctly made to the new
fan. Refer to Fig. 37 and 37a.
Do not use any sealant on the fan/flue duct connection.
The polarity of wires onto the fan is not important.
Horizontal Flue
+
2
—ve
+ve
+
3 (+)
(red tube)
29
5
6
7
1. Flue hood
2. Fan
3. Sensing connection (+)
4. Sensing connection ( )
5. Flue turret
6. Fan clamp
7. Fan clamp fixing screw
1
NOTE: The polarity of wires is
not important
1. Flue hood
2. Fan
3. Sensing connection (
4. Sensing connection (—)
5. Top outlet sealing plate
6. Fan lead clip
7. Fan fixing screws (2)
8. Pressure tube junction
9. — ve pressure tube
+
10. ve pressure tube
4 ( — )
(clear tube)
+
)