Conversion To Other Gas Types / Nozzle Change - Wolf CGU-2-18 Installation And Maintenance Instructions Manual

The conversion to other gas types is made in four steps:
1. Nozzle replacement
2. Adjusting the control unit after converting the gas type
3. Checking and adjusting the nozzle pressure
4.
Carry out all steps, otherwise there is a risk of
Note
incorrect functions or system damage.
1. Nozzle change:
- Switch OFF the boiler at the ON/OFF switch and
isolate it from the power supply
- Remove the casing lid of the gas fired boiler. For this,
pivot the control unit lid down, hook in the r.h. and l.h.
turnbuckle, undo the lower casing lid and unhook at
the top
- Close the gas valve, observe all safety instructions
and crack open the gas fittings at the gas manifold
- Remove fixing screw
- Pull out the gas manifold
- Undo all burner nozzles (spanner size 7) at the gas
manifold
- Insert new burner nozzles with new gaskets
- Reassemble the boiler in reverse order
Boiler No. of nozzles
CGU-2(K)
CGU-2(K)
CGG-2(K)
CGG-2(K)
Table: Number of nozzles, nozzle size
- Continue with adjusting of the control unit subject to gas type
- Adjusting the nozzle pressure
- Identification
34
Conversion to other gas types
CGU-2(K) / CGG-2(K)
Identification
Natural gas H
Nozzle ID
18 090
24 090
18 087
24 087
Fixing screws
LPG/propane
Nozzle Nozzle ID
Ø mm
0.90 060
0.90 060
0.87 057
0.87 057
Gas fitting
Nozzle
Ø mm
0.60
0.60
0.57
0.57
Gas manifold
3062347_0309