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MST 5
STAGE 1 DUTY CYCLE
As long as the actual temperature is below the
main set point, stage 1 operates under a timer.
Otherwise, the timer is deactivated and the fan
stays ON until the main set point (minus the
differential) is reached. The stage 1 duty cycle
sets the percentage 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 know as the period. (The
period is set to function 2 in secondary mode).
The stage 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.
Adjusting the duty cycle of Stage 1:
•
rotate the selector dial to position (2),
•
rotate the adjuster dial counterclockwise to
decrease the duty cycle, and clockwise to
increase it.
The duty cycle is displayed on the MST-5.
Example: The period of stage 1 is set to 8
minutes by secondary function (2), while the
duty cycle is set to 25%. As long as the main
set point temperature of the room has not been
reached, the stage operates for 2 minutes, and
stop for 6 minutes.
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Summary of Contents for MST-5
Page 8: ...Page 8 MST 5 www monitrol com ...
Page 16: ...Page 16 MST 5 Fig 5 Main bottom Board terminal blocks and ground connection www monitrol com ...
Page 17: ...Page 17 CHAPTER 3 USER S GUIDE CHAPTER 3 USER S GUIDE www monitrol com ...
Page 18: ...Page 18 MST 5 www monitrol com ...
Page 44: ...MAV MST 5M Ver 1 1 October 1995 Rev July 1997 Rev June 2001 www monitrol com ...
