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INSTALLATION INSTRUCTIONS
This water heater must be installed by a licensed electrician, as required by law.
1. Open the four screws located on the top and bottom of the device and remove the cover from base.
2. Fix the base horizontally against a wall or side of cabinet, metal plate supplied must be installed
below cable entry on the wall and ground wire must be connected to the unit, the water entry and
exit connectors are on the down/bottom side of the unit. Use 4 mounting screws provided.
3. For the AT900-13 model, use the supplied water filter on the income water line (see attached separate
diagram: "Water filter installation").
4. Connect the incoming water line (cold only) on the bottom left side and the outgoing water line to the
bottom right side. Please check that there is no water leakage from the unit.
5. Connect and lock the electric lines to each corresponding connector. It is required that this device be
properly grounded.
6. Turn on the unit and check that it is operating as required.
7. Reconnect the cover to the base with 4 screws.
8. It is required that a Ground Fault Circuit Interrupter/Earth Leakage Circuit Breaker be incorporated in the
circuit.
9. Make sure that there is a pressure release valve in your water system.
10. It is required to install a flow control restrictor (AERATOR) at the sink or shower.
WARNING: UNIT MUST BE PROPERLY GROUNDED
THIS HEATER MUST HAVE ITS OWN INDEPENDENT CIRCUIT USING
A CORRECTLY RATED CIRCUIT BREAKER AND SUITABLE WIRE, SEE
TABLE RECOMMENDED CABLE.
