Burner Door - Viessmann Vitocrossal 200 CM2 500 Service Instructions Manual

Burner Service
Burner Tube
(continued)

Burner Door

44
Vitocrossal 200, CM2 400, 500 and 620 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.
1. Loosen the retaining clamp and disconnect the
combustion air flex hose and set aside.
2. Disconnect the gas line.
3. Disconnect electrical plugs 35, 36, 87, 111 and 122
from the burner control.
Note: To disconnect electrical plugs 87 and 111 remove
the burner control cover (see page 34).
4. Remove ionization electrode block.
5. Remove ignition electrode block.
6. Remove the six M12 (19 mm hex) burner door bolts,
washers and cotter pin and set aside.
Note: To access the burner door, disconnect gas line
and plugs 40/156 and 40 from the burner
control bracket and plugs 90 and 41 from the
burner control.