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EN • 22
ENFRRU PL DE IT ES NL
Delta Pro S / Delta Pro Pack : 664Y4900 • E
A
C
E
D
B
G
F
66
185
228 209
307
201
ACV BG 2000S PREMIX GAS BURNER
The BG 2000-S air/gas premix burner has a Honeywell gas valve, a venturi
tube and an electric control relay. The gas valve has been specially designed
for low NOx air/gas premix burners with automatic ignition and ionisation
flame detection.
The output pressure of the gas valve is equal to the air pressure at the neck of
the venturi tube, less the limit of the offset adjustment. The fan takes in the
combustion air through the venturi tube into which the gas inlet opens. As it
passes through, the air creates a differential across the neck of the venturi tube
and draws in the gas at the venturi tube outlet. A perfect air/gas mix passes
through the fan and is then to the burner tube.
The electric control relay attached to the gas valve ensures that the burner
flame is ignited and controlled correctly.
This principle guarantees safe and quiet operation:
In the event of low air flow, the differential across the venturi tube falls, the
gas flow rate diminishes, the flame extinguishes and the gas valve closes: the
burner is then in lockout.
In the event of flue blockage or restriction, the air flow rate falls, then the
same reactions as those described above causing burner lockout.
Air/gas mix control principle
A. Air
B. Gas
C. Venturi tube
D. Fan
E. Air – Gas mix
F. Offset adjustment screw
G. Gas flow rate adjustment screw
BG 2000-S GAS BURNER FEATURES
The BG 2000-S burner is preset in the factory
for natural gas.
Conversion to propane:
PROHIBITED IN BELGIUM.
Conversion kit attached to the burner including:
- Cover plate.
- Information plate.
- Settings sticker.
- Installation instructions.
GAS BURNER SETTINGS
Delta Pro S &
Pro Pack 25
Delta Pro S &
Pro Pack 45 Delta Pro S 55
Burner BG 2000-S/25 BG 2000-SV/25 BG 2000-S/45 BG 2000-SV/45 BG 2000-S/55
Input power kW 28,0 28,0 50,0 50,0 61,0
CO
2 natural gas % 9,0 9,0 9,0 9,0 9,0
CO
2 propane % 11,0 11,0 11,0 11,0 11,0
Gas connection Ø 3/4" [F] 3/4" [F] 3/4" [F] 3/4" [F] 3/4" [F]
Fan speed rpm 3400 3400 4400 4400 4100
Gas ow rate [G20 - 20 mbar] m/h 2,95 2,95 5,29 5,29 6,45
Gas ow rate [G25 - 25 mbar] m/h 3,43 3,43 6,15 6,15 7,51
Gas ow rate [G31 - 37/50 mbar] m/h 1,14 1,14 2,05 2,05 2,50
Flue gas temperature net value °C 151 151 178 178 150
22


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