Adjusting the Differential Setting:
The differential setting slide is on the left-hand side of the ETC101 (See Diagram 3 or Inside Cover of ETC101)
The ETC101 comes with a factory set differential setting of 10.
This means that the ETC101 will call for heat when the tank temperature has fallen to10 degrees below the
Temperature set point.
To adjust the differential setting, slide the lever to the desired setting, using the indicator scale.
Diagram 1 – For tanks with Immersion Wells
Diagram 2
Typical Wiring Wiring with 24V if needed
Diagram 3
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