Turbo Fan - Bosch Singular 4000 Service Manual

Service Manual

9.16 Turbo Fan

1. Refer to 9.1 Preparation Step.
2. Separate the fan connection terminal (Item 1), solenoid valve terminal (Item
2), overheat sensor wire (Item 3), and heat exchanger temperature sensor
(Item 4).
Figure 110
3. Separate the gas pipe (Item 1)using a wrench.
Figure 111
4. Loosen the 3 fan fi xing screws (Item 1). Use the screwdriver for 2 screws/use
a wrench for the screw in the back.
Figure 112
6 0 |
4
1
3
2
1
1
1
5. Remove fan and silencer from boiler by pulling out silencer end fi rst.
Figure 113
6. Separate the silencer part from the fan by removing two fi xing screws (Item
2) fi rst.
2
Figure 114
7. Replace with a new fan. When assembling a new unit for replacement,
assemble it in reverse order of separating it. Check for the packing between
the nut and the pipe when assembling the gas pipe.
8. Check the spring washer when assembling the fan fi xing screw.
Figure 115
Singular Combi Boiler - BTC 439002301 A (12.2021)