Service; Removing The Burner And Checking The Burner Gasket; Service Removing The Burner And Checking The Burner Gasket; Placing Burner Door In Service Retainer - Viessmann Vitocrossal 300 Service Manual

Vitocrossal 300 CU3A 26 to 57 Service

Removing the Burner and Checking the Burner Gasket

Placing the Burner Door in the Service Retainer
1. Switch OFF the main power supply and the ON/OFF
switch at the control unit.
2. Close the gas shut-off valve and safeguard against
reopening.
3. Pull power cables from fan motor H, gas valve C and
ionization electrode D. Pull plug G.
4. Undo fitting on gas supply pipe E and pull ventilation
air adaptor A.
5. Undo four nuts B and remove burner F, then hook
it into its service retainer L.
Note: Prevent damage to the burner. Always hook
the burner into its service retainer.
6. Check burner gasket K for possible damage;
replace if necessary. The burner gasket should be
replaced every 2 years.
CAUTION
To avoid damage to the burner, do not lay burner on its
dome matrix or touch the burner mesh.
Failure to heed this caution may cause damage to the
burner, which may lead to improper operation.

Service

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