DIAL SWITCH POSITIONS
The dial switch controls the setpoint temperature of the Electric Heating Package. The dial switch may be rotated clockwise or counter-clockwise to set switch to the desired position. Set the dial switch to one of its four possible positions by hand, or by using a small blade screwdriver.
The table below lists the position number and the function corresponding to that position.
Dial Switch Position
Visual Representation (SW-1)
Function
Number
Not Used (Disabled): A setting of 0 means that the electric heating will not turn on. The controller will function the same as setting the toggle switch on the front of the controller to “WOOD” mode.
0
Outdoor Reset Mode: Targets a tank temperature based on the Outdoor Reset Curve (see Outdoor Reset Curve section of this manual). The electric elements will turn on if off-peak is available and the tank is below the target set point of the outdoor reset curve.
1
Freeze Protection Mode (50°F): Targets a tank temperature of 50°F. Temperature differential (deadband) = 5°F. If off-peak is available, the electrical elements will turn on if the tank is 45°F or below and remain on until the tank reaches 50°F.
The elements will not turn on unless off-peak is available. It is recommended that if the tank operates
2
in freeze protection mode, that the unit and piping directly connected to the unit be constantly circulated to prevent piping outside of the tank from freezing (if the unit is located in a generally unheated space). Because the tank has a large volume, there is no danger of freezing the tank even with a 16 hour or more carry-over between periods of electric availability.
Maximum Heat Mode (190°F): Targets a tank temperature of 190°F. Temperature differential (deadband) = 5°F. If off-peak is available, the electrical elements will turn on if the tank is 185°F or below and remain on until the tank reaches 190°F.
3
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GARN® WHS Electric Heating Package Manual ©DECTRA CORPORATION - May 2016 (Supersedes September 2015 edition)
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