Removing The Supply And Return Headers (Single Fuel) - Viessmann Vitocrossal 300 CA3B Disassembly And Reassembly Instructions

Vitocrossal 300, CA3B Series 2.5 to 6.0 Technical Data

Removing the Supply and Return Headers (Single Fuel)

1. Remove the thermal insulation jacket from the
supply header.
2. To disassemble the supply header, remove the
flange bolts and lift off the supply header.
3. Disconnect the burner gas piping from the gas
manifold and set aside.
4. Remove the gas manifold from the boiler section
bracket.
5. Remove the bolts from the actuators and remove
the actuators and carefully set aside.
6. To disassemble the return header, remove the flange
bolts and lift off the return header.
7. Remove the isolation valves and set aside.
Disassembly
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