Inlet Damper Linkage; Plug Console With Relay - Viessmann Vitocrossal 200 CM2 186 Service Instruction

Burner Service

Inlet Damper Linkage

Note: Only CM2 models 246 and 311 are equipped
with a inlet damper linkage.

Plug Console with Relay

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Vitocrossal 200 CM2 186 to 311 Service
1. Remove the M4 (8 mm hex) nut connecting the
linkage to the inlet damper bracket.
2. Loosen the M5 (4 mm hex key) set screw connecting
the linkage to the servomotor.
3. Remove the linkage and replace.
Note: Ensure the burner inlet damper vents are in the
fully open position when reconnected. Adjust
linkage if necessary.
CAUTION
If burner inlet damper is not opened completely it may
lead to malfunctions or indicates a wrong setup of the
servomotor.
4. Reinstall in reverse order.
Note: Torque the M4 (8 mm hex) nut to 8.8 lb.in (1 Nm).
Note: Torque the M5 (4 mm hex) set screw to 13.2 lb.in
(1.5 Nm).
1. Disconnect plugs 40/156 and 40 from the back of the
plug console.
2. Disconnect the two ground wires (yellow/green) from
the terminal block below the plug console.
3. Disconnect wires T1 (brown) and T2 (blue) from the
relay contactor.
4. Remove the four 3 mm hex head screws and washers
from the plug console mounting plate and set aside.
Replace the plug console with relay.
5. Reinstall in reverse order.