Installation Instructions

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• If there is insufficient space above the hot water heater for the
controller, wall mounting must be used.
• An additional length of flexible conduit, clamps, and wires are required
(not included).
• Select a suitable location to mount the controller to the wall, and
mount the controller to the wall using the provided mounting holes.
• Attach the additional conduit to the bottom of the controller and
attach the other end to the junction box cover. Feed hot water heater
wires through the conduit (additional wire, including a ground
extension, will likely be needed: use code compliant wire for your
jurisdiction as necessary). Finally, secure the junction box cover back to
hot water heater.
8. Connect the load wires from the water heater to the terminal block labeled
“OUTPUT” inside the ARA. Route the wires to the terminal block and trim to
length with ¼” of bare wire exposed on the ends.
9. Open the terminal blocks by turning its screws counterclockwise until the screw
threads click. Insert the wire into the opening on the side of the terminal block
and tighten the screw until snug. Do not over-tighten, or the ARA may be
damaged, and the wires may not hold. Terminal blocks accept 10-30 AWG wire.
10. Install the heater’s original cable clamp for the supply wires in the conduit port
at the top of the ARA.
11. Thread the supply wires through the Line In conduit port on the ARA, and
provide an extension of the ground wire if necessary. The line and neutral wires
should be long enough to reach the terminal blocks on the ARA – if not, provide
extensions as necessary. Trim, strip, and connect the supply wires to the Line In
terminal block on the ARA.
a. Note: If it is necessary to preserve line and neutral orientation for the
model hot water heater you are working on (i.e. a 120v hot water
heater), when the ARA’s relay is closed the two nearest screw posts are
connected (lower Line In to upper Output), and the two furthest screw
posts are connected (upper Line In to lower Output).