Chore-Tronics® 2 Control Overview of Screens
MT1843B
23
Ventilation timer ramping-Ventilation timer ramping needs to be set to YES in Setup
General: House equipped for screen (Screen 13, equipped tab). If the sensor(s) that
are assigned to the Minimum Ventilation fan(s) temperature is at or below set
temperature then the fans will use the ON and OFF times that are listed for the
Minimum Ventilation Timer. If the sensor (s) assigned to the Ventilation Time
Ramping temperature is between set temperature and the fans' ON temperature the
control will adjust the amount of ON time between the Min Ventilation value and the
Max value. The OFF time will be adjusted by the same amount of time that the ON
is adjusted, thus keeping the total cycle time constant. The temperature is checked 30
seconds before the beginning of the ON time cycle of the Minimum Ventilation
Timer. Once the fans' temperature sensor(s) reach the fans' ON temperature, the fan
will turn on and run continuously until the fans' OFF temperature is reached.
Example: The set temperature is 70.0°F and the fans assigned to the Min Vent timer
ON temperature is 72.0°F. The Minimum Ventilation Timer values are 30 seconds
ON time and 270 seconds OFF time. The maximum ON time is 210 seconds. If the
sensor(s) assigned to the Ventilation Time Ramping temperature is 71.0°F at the
beginning of the anticipation cycle, then the fans will have an ON time of 125
seconds and an OFF time of 175 seconds.
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