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ECS 1M
FAN 1 DUTY CYCLE
As long as the actual temperature is below the
main set point, Fan 1 operates at the minimum
speed set by Fan 1 Minimum Speed (primary
function 3). The Fan 1 duty cycle sets the per-
centage of time the fan is ON versus the
percentage of time the fan is OFF. The ON
time is entered as a percentage of the total
time which is known as the period.
The Fan 1 duty cycle is adjusted in 5%
increments from a minimum setting of OFF,
5%, 10% etc., up to a maximum setting of ON
corresponding to continuous operation.
The period is fixed to 3 minutes.
Adjusting the duty cycle of Fan 1:
rotate the Selector dial to position (4),
rotate the Adjustor dial counterclockwise
to decrease the duty cycle, clockwise to
increase it.
The duty cycle is displayed on the ECS.
Example: The duty cycle is set to 50%. As long
as the main set point temperature of the room
has not been reached, the fan operates at a
minimum speed for 1
½
minute, and OFF for 1
½
minute.
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