Disconnecting The Burner Assembly - Viessmann Vitocrossal 300 CA3B Disassembly And Reassembly Instructions

Vitocrossal 300, CA3B Series 2.5 to 6.0 Technical Data

Disconnecting the Burner Assembly

1. Disconnect the burner gas line.
Note: Do not lose gasket.
2. Disconnect plugs 145, 41, 53 and 40 on the
burner control unit.
3. Remove sensors 15A/B and 3A/B from the sensor
wells.
4. Disconnect wiring and remove electrode block.
5. Remove the 6 nuts around the burner mounting
plate.
6. Remove upper burner section.
Note: Repeat the steps listed above for all remaining
burners installed on the boiler.
Disassembly
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