8
3.2 Conversion to Different Gas Type
Note: For the UK/Ireland, the products must not be converted between gases. The gas
valves have been sealed.
Burners can be used with NG or LP types of gas, provided that the injector orifice appropriate for
the gas delivered are installed. Use a 7mm (
9
/
32
") box spanner or socket to remove the orifice.
To change the injector orifice:-
3.2.1 Turn off the mains supply.
3.2.2 Ensure all gas valves are turned off.
3.2.3 Remove all burner heads.
3.2.4 Unscrew the orifice using a 7mm socket and replace
them with the correct ones. (Size numbers stamped
on side e.g. 70 = 0.70mm)
3.2.5 Reset minimum setting (see Section 3.1).
The label supplied with the orifice kit can be placed over the existing gas type label to indicate the
change.
Note:Kits of high altitude orifices are available for GC901 (these are also suitable for GC901QT
models). NG Part No. 531566 LP Part No. 531567
These orifices should be used at approximately 6000 feet or above.
3.2.6 To change the gas pressure (4"NG, 11"LP): (USA/Canada Only)
1. Unscrew the cap from the regulator.
2. Check the orientation of the plastic conversion plug, and if necessary, unscrew, turn over and
screw back in (wide section away from cap for LP and against cap for NG - see diagram
below for appropriate orientation).
3. Replace regulator cap.
4. Test gas pressure (test point provision on side of regulator). When converting the regulator for
different settings, the function of the regulator must be checked at a pressure at least 1"WC
(249Pa) above the specified manifold pressure.
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