A
Appendix A: Gas Type Conversion
32
Moffat Cobra Series - CF4
©
Moffat Ltd, August 2012
Amendment 4
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 gasses, if required.
TOWN GAS Only - The burner operating pressure is to be adjusted using the Town Gas adjustable gas
regulator supplied.
Refer to the ‘Gas Conversion and Specifications' section of this manual for further details.
Natural Gas
(G20)
Propane
(G31)
Main Burner Injectors
Ø 3.00mm
Ø 1.80mm
Pilot Burner Injectors
0.62
0.35
Pilot Screw Adjustment
Fully Out (c.c.w)
Fully Out (c.c.w)
Low Fire Screw Adjustment
Fully Out (c.c.w)
(Flush with casing)
Fully Out (c.c.w)
(Flush with casing)
Burner Operating Pressure
8.6 mbar (*)
26.4 mbar (*)
Supply Pressure
20 mbar
37 mbar
Natural Gas
LP Gas
(Propane)
Town Gas
Main Burner Injectors
Ø 3.00mm
Ø 1.80mm
Ø 6.30mm
Pilot Burner Injectors
0.62
0.35
0.75
Pilot Screw Adjustment
Fully Out (c.c.w)
Fully Out (c.c.w)
Fully Out (c.c.w)
Low Fire Screw Adjustment
Fully Out (c.c.w)
(Flush with casing)
Fully Out (c.c.w)
(Flush with casing)
Fully Out (c.c.w)
(Flush with casing)
Burner Operating Pressure
0.8 kPa (*)
2.5 kPa (*)
0.63 kPa (*)
Supply Pressure
1.13 - 3.40 kPa
2.75 - 4.50 kPa
0.75 - 1.50 kPa
Butane
Ø 1.70mm
0.35
Fully Out (c.c.w)
Fully Out (c.c.w)
(Flush with casing)
2.5 kPa (*)
2.75 - 4.50 kPa
