A19AAT type thermostats have an adjustable set point stop that may be set to limit the low cutout temperature adjustment. See Figure 1.
WARNING
Avertissement
To adjust and set the set point stop:
- Disconnect the thermostat plug from the power supply receptacle and remove the thermostat cover.
- Loosen the set point stop adjustment screw and move it along the set point stop
bracket (while adjusting the temperature range dial) until the adjustment screw is
positioned in the path of the appropriate set point stop adjustment step (Figure 1). Important: Always retighten the set point stop adjustment screw before putting the thermostat into operation. Failure to retighten the set point stop screw may cause the thermostat to lose calibration.
The set point stop temperature is indicated by the set point indicator.
Figure 1. Adjusting the Set Point Stop