GZ 2 - GZ 4 / 100 - 1450 kW
Installation-Operation-Maintenance
5
Universal use
The adjacent diagram depicts the approximate performance
range of the different burner sizes as a function of the resis-
tance measured at the boiler's gas exit during operation. The
curves show maximum values and correspond with the model
certification according to DIN 4788.
The starting resistance of the boiler is of decisive importance to
the attainable burner performance.
Fig. 1:
Performance diagram GZ 2
Fig. 2: Performance diagram GZ 3
Fig. 3:
Performance diagram GZ 4
Two-stage Operation
The use of a modern, symmetrically designed high-performance
mixing system in conjunction with precisely functioning adjust-
ment at the compact gas ramps (GZ 2 - GZ 3.0) or at the gas
ramps assembly (GZ 3.1 -GZ 4) makes it possible to adjust out-
put precisely to heating requirements, resulting in optimum en-
ergy utilisation in both load stages with low-emission combus-
tion.
Two-stage operation is controlled by the air damper servomotor
which adjusts the air flow for the two load stages and switches
the gas solenoids in the compact gas ramps (GZ 2 -GZ 3.0) or
gas ramps assembly (GZ 3.1 - GZ 4) by adjustable cam control-
lers.
