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STAGE 1 DUTY CYCLE
As long as the actual temperature is below the
main set point, the timer unit will not operate.
When the ambient temperature rises above the
main set point, the stage 1 begins to operate in
a duty cycle mode. The duty cycle sets the
percentage of time the stage 1 unit is ON
versus the percentage of time the unit is OFF.
The Stage 1 duty cycle is adjusted in 5%
increments from a minimum setting of 5%, up
to a maximum setting of 100% corresponding
to continuous operation.
Adjusting the duty cycle setting:
•
rotate the Selector dial to position (3),
•
rotate the Adjustor dial counterclockwise to
decrease the duty cycle setting, clockwise
to increase it.
The duty cycle setting is displayed on the
MST-1.
Example: The period of Stage 1 is set to 8 min-
utes by secondary function (3), while the duty
cycle is set to 75%. When the temperature
reaches the main set point, the stage 1 begins
to operates for 6 minutes, and shuts OFF for 2
minutes.
CHAPTER 3 - USER’S GUIDE
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