Page 36
ECS-4+
FAN 2 DIFFERENTIAL
The Fan 2 differential setting establishes the
temperature at which Fan 2 reaches maximum
speed. The value entered is the temperature
difference above the Fan 2 relative set
point.
The Fan 2 diferential is adjusted in 0.5 degree
increments from a minimum setting of 2.0°F
(1.0°C) to a maximum setting of 18°F (10.0°C).
Adjusting the Fan 2 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 (4);
•
rotate the Adjustor dial counterclockwise to
decrease the differential, clockwise to
increase it.
The Fan 2 differential setting is displayed on
the front panel.
Diff
Example:
The main set point temperature of the room is 70°F. A
Fan 2 relative set point of 5 °F along with a Fan 2
differential setting of 5°F is set. When the temperature of
the room reaches 80°F, Fan 2 operates at its maximum
speed.
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