Fan 1 Differential - Varifan ECS-4+ User Manual

FAN 1 DIFFERENTIAL

The Fan 1 differential setting establishes the
temperature at which Fan 1 reaches maximum
speed. The value entered is the temperature
difference from the main set point.
The Fan 1 diferential is adjusted in 0.5 degree
increments from a minimum setting of 2.0°F
Diff
(1.0°C) to a maximum setting of 18°F (10.0°C).
Adjusting the Fan 1 differential:
•
rotate the Selector dial to position (12);
•
rapidly rotate the Adjustor dial back and
forth to enter secondary function mode;
•
rotate the Selector dial to position (3);
•
rotate the Adjustor dial counterclockwise to
decrease the differential, clockwise to
increase it.
The Fan 1 differential setting is displayed on
the front panel.
Example:
A main set point temperature of 70°F along with
a Fan 1 differential setting of 5°F is set. When
the room temperature reaches 75°F, Fan 1
operates at its maximum speed.
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CHAPTER 3 - USER'S GUIDE
Page 35