Bosch WORCESTER 35CDi - Component Replacement - Air Pressure Switch and Heat Exchangers; Air Pressure Switch Replacement; Heat Exchanger Fixing Details; Air Flow Switch Identification

15.4.26. Air Pressure Switch
Remove the inner casing cover.
Carefully pull off the electrical connections and sensing tubes.
Unscrew and remove the switch. Ensure that the connections are
correctly made to the new switch. Refer to Fig 61.
25
Fig 59-Domestic Hot Water Heat Exchanger
Fig 60-Primary Heat Exchanger Fixing
Fig 61-Air Flow Switch
5
1
2
4
3
1. Fixing Clip (2)
2. Domestic Hot
Water Heat
Exchanger
3. Cold Water Inlet
4. O-Ring
5. Domestic Hot
Water Flow
6
1
2
5
3
4
1. Fixing Clip (2) 5. O-Ring
2. Clip Locating Channel 6. Appliance Back Panel
3. Primary Heat Exchanger
4. Clip Locating Groove
4
5
6
1
2
3
1. Air Pressure Switch
2. Electrical Connection - Top Tag
3. Electrical Connection - Bottom Tag
4. Air Flow Sensing Tube Connections
RH + Positive
LH Negative
5. Fixing Screws (2)
6. Mounting Bracket
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