Control Operation Overview Chore-Tronics® 2 Control
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MT1843B
Min/Max Rel Sensor #
The Minimum and Maximum Relative Temperature Alarm Limits refer to
the set temperature. A +10.0 maximum relative alarm means that one or
more of the temperature sensors that are being monitored in the current mode
(default is the mode sensors) are greater than 10 degrees higher than the set
temperature. The alarm message indicates in which mode the alarm occurred
and which sensor went outside of the limits. Between the parentheses to the
right of the Min and Max Relative Alarm limits are the resulting actual
temperature limits. They are the addition or subtraction of the limit to or from
the current set temperature. A "min" and a "max" temp alarm setting can be
entered for all three modes of ventilation.
Low Water Pressure
An optional mechanical water pressure switch can be connected to one of the
digital inputs of the IO board in order to detect a low water pressure
condition. The switch contacts need to be closed when the pressure is above
a safe lower limit. In the Alarm Settings screen (Screen 8, settings tab), the
amount of alarm delay time can be entered in order to filter out transient low
water pressure conditions. The low water pressure alarm switch is set at the
factory to come on at 5 PSI and goes back off when the pressure rises above
10 PSI.
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