Technical data

Thermo Top Z/C
9 Repair
903
9.2.2 Combustion Air Fan, Replacement
CAUTION
In case of Thermo Top C the circulation pump must be
removed first (see 9.2.1.1).
9.2.2.1 Removal
1. Carefully lever off cover (6, Fig. 902).
2. Disconnect electrical connector of combustion air fan.
3. Remove screws (11).
4. Withdraw combustion air fan (1) from burner housing
(5) and fuel pipe (9).
5. Remove gasket (2) and discard.
6. Perform procedures on components after
disassembly (refer to 9.1.1).
9.2.2.2 Installation
1. Replace gasket (12, Fig. 902) of combustion air fan
(1) as required.
2. Position new gasket (2) on burner housing (3).
3. Slide combustion air fan (1) onto fuel pipe (9) to bring
fan into installation position.
4. Secure combustion air fan (1) with screws (11).
Torque tighten screws to 3.5 ± 0.3 Nm.
5. Plug electrical connections of combustion air fan.
6. Install circulation pump as required (see 9.2.1.2).
7. Plug on cover (6) and engage.