100
5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Service
Fuel Conversion NG to LPG
Natural Gas (NG) to Liquid Propane Gas (LPG)
5167 212 (This unit is equipped for Propane Gas)
- Apply new LPG label over the existing NG label located
on the gas valve.
5167 295 (This appliance has been field converted
to Liquid Propane Gas)
- Apply next to CSA Rating Plate.
5285 200 (Conversion Report Form)
- Complete form and Fax or E-mail to Viessmann.
Keep a copy for your own record.
Conversion Labelling
Burner Control Unit
1. Disconnect KM-BUS connector
avG
.
2. Undo 2 mounting screws. Torque when installing:
9 lb.in (1 Nm).
3. Lift the display and programming unit and pull off the
connector of the burner control unit connecting cable.
Remove the display and programming unit.
4. Remove all connecting cables from the burner control unit.
5. Pull the coding card from the burner control unit.
6. Undo 4 mounting screws on the burner control unit.
7. Remove the burner control unit.
8. Install the new burner control unit in reverse order.
9. For further steps, see chapter “Further assembly”
on page 117.
LPG coding card
Boiler Model Burner model
B
coding
card ID
Coding card
part #
CA3 2.5
and 3.0
1.25 MMBTU
5092
7863460
1.5 MMBTU
5093
7863461
CA3 3.5
to 6.0
1.5 MMBTU
5090
7862572
2.0 MMBTU
5091
7862571
