USING AN AQUASTAT TO SET A CUSTOM DEADBAND AND SETPOINT The digital controller comes pre-programmed with a non-adjustable 5°F deadband for all of its setpoints. For example, if a dial switch position of 3 is chosen (setpoint temperature of 190°F), and off-peak electricity is available, then the elements will turn on when the tank is at or below 185°F. The elements will remain on until the tank reaches its setpoint of 190°F. The elements will then turn off. When the tank drops back down to 185°F, the cycle repeats. If you wish to set a customizable deadband and setpoint, wiring an aquastat in series with the existing controls is a simple and cost effective way to do so. Choose the aquastat for your application and wire as the diagram shows below.
NOTE: Alternatively, the aquastat can be wired in series with the signal wire from the controller to the sequencer.
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GARN® WHS Electric Heating Package Manual ©DECTRA CORPORATION - May 2016 (Supersedes September 2015 edition)
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