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Flue Gas Recirculation (FGR)
By using induced FGR system and "state-of-the-art" burner heads, it is possible to meet strict NOx requirements
With precision controlled FGR system results in excellent performance, good turndown, high efficiency and guaranteed NOx levels
FGR is an alternative to multiflam burners where combustion chamber dimensions are tighter
Depending on combustion chamber design, dimensions and media temperatures, the NOx levels can be as low as 20 ppm corrected at 3% O2.

Burners with FGR include the following components: Induced FGR flange, system damper, actuator, gaskets, slip on flanges and system controller

Variable Frequency Drive (VFD)
Weishaupt burners are available with VFD to reduce energy costs and increase efficiency especially of burners with high horsepower motors
VFD can also be used on burners with linkage-less controls as an integrated part of the burner
Speed control System Weishaupt: Speed control allows the matching of the motor speed to the current air requirement of the burner. This allows long term savings of electric energy.
O2 Regulation System Weishaupt: With O2 regulation the effects of ambient conditions can be balanced out and constant combustion conditions are achieved.