1.8 INJECTOR DIAMETERS
Model
Natural
Propane
Open top
Ø1.93mm
Ø1.2mm
Fusion Burner
Ø1.0 mm
Ø
0.5mm
Ovens
Ø2.2mm
Ø
1.33mm
1.8.1 Fusion Burner pilot Injectors
Natural Gas
Propane Gas
G27.2
G22.1
1.9 GAS PRESSURE ADJUSTMENT
NATURAL and PROPANE GAS
The following supply pressures apply to both all units.
Gas type
mbar
Natural
20
Propane
37
Pressure test point is located on RH side of gas
manifold situated behind the front control panel.
An adjustable governor (¾ BSP) is provided on Natural
gas units.. This should be adjusted to achieve an
operating pressure at control manifold of 15mbar.
For muti-burner systems, approximately half of the
burners should be on when setting governor pressure.
1.10 BURNER ADJUSTMENTS NATURAL and
PROPANE GAS.
1.10.1 Burner Aeration
Open top, fusion and oven burners are fitted with fixed
injectors and set aeration apertures.. NO
ADJUSTMENT is possible.
1.10.2 Bypass Screw Diameters
Minimum gas flow to burner is governed by size of
fixed by-pass screw hole as follows
:-
Natural Gas
Propane Gas
Model
Marked
Marked
Open Top
76
51
Oven
93
55
The fusion burner has no bypass screw.