Reducing The Heating Output (If Required) - Viessmann VITOCROSSAL CRU 800 kW Service Instructions Manual

Commissioning, inspection, maintenance
Conversion to LPG P
Replacing the coding card on the burner control unit
1.
jS
3.
2.
Fig. 5

Reducing the heating output (if required)

The maximum heating output of the burner can be
reduced if required.
Status Service
R
S
Fig. 6
14
(cont.)
1. Remove the CAN bus plug
2. Undo 2 fixing screws.
Torque when installing: 1 Nm
3. Lift the display and programming unit and discon-
nect the plug of the burner control unit connecting
cable.
Remove the display and programming unit.
5.
4. Pull the coding card from the burner control unit.
5. Insert the coding card for P gas.
6. Re-assemble the burner control unit in reverse
order.
4.
1. Press S and hold for longer than 2 s.
flashes.
2. Press
3. Press S. On the display, "6" appears under Status.
4. Press S. On the display, "1" appears under Status.
The current value for the maximum heating output
in % is shown under Service.
5. Press
output.
6. Press S to confirm. If applied successfully, "1" will
be shown on the display under Service, or "0" will
appear if it failed.
7. Press S to switch to the operating display.
.
jS
until the display shows "6" under Service.
or to set the required maximum heating