Service manual

B
Appendix B: Gas Conversion
29
© Moffat Ltd, September 2008
Revision 1/
Moffat Cobra Series CS9 - Gas Salamander
Commissioning
Before leaving the converted installation;
1. Check all gas connections for leakages using soapy water or other gas detecting equipment.
2. Check the following functions in accordance with the operating instructions specified in the
'Operation' section of the User manual.
• Light the Main Burners.
• Check the Low Fire burner operation.
• Check the High Fire burner operation.
• Ensure all controls operate correctly.
NOTE: If for some reason it is not possible to get the unit to operate correctly, shut off the gas
supply and contact the supplier of this unit.
Gas Specifications
- Non UK Only:
- UK Only:
NOTE:
• The burner operating pressure is to be measured at the manifold test point with both
burners operating at the 'High Flame' setting.
• NAT, LPG & Butane Only - The operating pressure is ex-factory set and is not to be
adjusted, apart from when converting between gases, if required.
• TOWN GAS Only - The burner operating pressure is to be adjusted using the adjustable gas
regulator supplied.
• Refer to the ‘Gas Conversion and Specifications section of this manual for further details.
WARNING:
DO NOT USE A NAKED FLAME TO CHECK FOR GAS LEAKAGES.
Natural Gas (G20)
Propane
(G31)
Main Burner Injectors Ø 1.85mm Ø 1.15mm
Low
Fire:
Size
Ø 1.00mm Ø 1.00mm
Adjustment
2 turns out (ccw) ½ turn out (ccw)
Operating Pressure 10 mbar 26 mbar
Gas Regulator Cap Screw
Natural Gas
LP Gas
(Propane)
Butane Town Gas
Main Burner Injectors Ø 1.85mm Ø 1.15mm Ø 1.10mm Ø 3.50mm
Low
Fire
Size
Ø 1.00mm Ø 1.00mm Ø 1.00mm
Adjustment
2 turns out (c.c.w.) ½ turn out (c.c.w.) 4 turns out (ccw)
Supply Pressure
1.13 - 3.40 kPa 2.75 - 4.50 kPa 0.76 - 1.50 kPa
Operating Pressure
1.0 kPa 2.55 kPa 0.63 kPa
Gas Regulator Cap Screw
Adjustable Regulator
(Adjust to the Burner
Operating Pressure)