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en
3
. . Operation with
b-control
Various control units are available for the NOZ
2
air heater.
This chapter describes operation with the
b-control
continu-
ously variable controller that is used on units having a basic
control (Basic type).
3.1
Introduction
This section describes the functions of the
b-control
continu-
ously variable controller which are necessary for the opera-
tion of the unit. The isolation switch on the unit is only
needed during maintenance and servicing.
3.2
Switching ON and OFF
When the controller is set to strength 0, the unit is switched
OFF.
Turn the knob of the controller clockwise in order to switch
the unit ON.
Note:
n
The unit switches on commencing at the minimum
strength 'min'.
3.3
Regulating the strength
The fan speed can be regulated in a continuously variable man-
ner with the controller.
The most optimal speed is the minimum strength at which the
airflow touches the ground and there is no draught across the
ground. This may vary per day and during the course of the
day.
