Restraining Device
Anchor Points
Grill Shutter
Pressure test point
NG Regulator
(P/No. 294-001-032)
1/2” BSP
Internal Thread
Connection
Gas
Point
150mm
650mm
Gas Flo
w
The following table shows the supply and operating pressures for various supplies.
gas type
natural gas
universal lPg
Supply pressure
at inlet to appliance regulator
(if fitted)
1.13 (kPa)
Minimum
2.75* (kPa)
2.75* (kPa)
Operate pressure at
appliance test point
1.00 (kPa)
2.75 (kPa)
2.75 (kPa)
* If the regulator is placed upstream of the cooker inlet, as is normal for cookers operating on LPG, then the supply pressure
and operating pressure are the same. The following table shows the injector sizes for each burner.
The following table shows the injector sizes for each burner.
injector
natural gas
universal lPg
Propane
Low heat burner
1.00 mm
0.55 mm
0.62 mm
Medium heat burner
1.35 mm
0.70 mm
0.82 mm
High heat burner
1.60 mm
0.90 mm
0.95 mm
Intense heat wok burner
1.75 mm
1.00 mm
0.95 mm
Grill – main injector
1.50 mm
0.82 mm
0.82 mm
Oven – main injector
1.60 mm
0.82 mm
0.95 mm
Oven – bypass screw
0.73 mm
0.45 mm
0.45 mm
checking pipe size
To work out a suitable pipe size for connection use the information in this table.
injector orifice
natural gas
universal lPg
Propane
Hot burner configuration
STD
WOK
STD
WOK
STD
WOK
Hourly gas consumption for cooker
62.8MJ
64.5MJ
50.1MJ
53.4MJ
56.5MJ
56.8MJ
Also use information about the length of the run, number of
elbows, tees and bends, the available service pressure and
the supply requirements. AS5601 will help you with this matter.
Operation ON/SNG
• The appliance regulator MUST be orientated so that the
pressure nipple is accessible.
• The arrow showing the direction of flow MUST be
pointed correctly
• The regulator has a ½” BSP internal thread at the inlet
and outlet
installation
18 INSTALLATION Chef 540 Upright Cooker
