Viessmann Vitocrossal 200 CM2 400 Service Instructions Manual page 42

Burner Service
Burner Tube
(continued)
42
Vitocrossal 200, CM2 400, 500, 620 and 620 TX Service
The burner
1. Install the burner with frame to the boiler door with
six M12 nuts and washers. Torque nuts to 177 lb/in
(20 Nm).
2. Remove the six M12 bolts and washers and set aside.
Open the boiler door and remove the plastic sleeve on
the burner tube and check the electrode gaps (see
electrodes on page 24).
3. Close the boiler door and install the six M12 bolts and
washers. Torque bolts to 354 lb/in (40 Nm).
4. Reconnect the ionization and ignition electrode plugs.
5. Reconnect the 41 plug.
6. Reconnect the 40 and 151 plugs.
7. Reconnect the gas line.
WARNING
Leak test the reconnected gas line.