•Wiring is enclosed in approved conduit (if required by local codes).
•The water heater and electrical supply are properly grounded.
Always reference the wiring diagram for the correct electri- cal connection. The complete wiring diagram can also be found on the top of the water heater near the junction box cover.
When installing the electrical wiring to the water heater
•Although this water heater is equipped with
Figure 7
Heating Element
Bang
NOTE: Applying electrical power to elements that are not submerged in water will destroy them. The manufacturer will not warranty any elements damaged in this manner.
1.Check and turn off power to the electrical wiring of the water heater before making any electrical connections to the water heater.
2.Remove the junction box cover that is secured by one screw (Figure 8A). Place the cover and screw aside and view the wiring diagram. Locate the four power wires inside the junction box (there will be TWO red wires and TWO black wires).
3.Connect the electrical supply to the water heater in accordance with the local utility requirements and codes. A standard 1/2 inch opening has been made in the junction box for the conduit connections (Fig- ure 8A). NOTE: Use only 10 gauge solid copper wire for the electrical connections and an appropriate size double pole circuit breaker.
WARNING
Fire Hazard
Use 10 gauge solid copper wire. Use a UL approved strain relief. Connect ground wire to green ground screw.
Failure to do so can result in death, fire, or electrical shock.
4.Ground the water heater by connecting the bare cop- per ground wire from the home’s electrical service to the green ground screw (located on the electrical jun- ction box on top of the water heater). See Figures 8 and 8A.
5.There are TWO black wires and TWO red wires in the water heater. The smaller red and black wires are used by the Smart Grid connector.
Figure 8 |
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Wiring Diagram |
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| Smart Grid |
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| Circuit |
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| Approved | Breaker | |
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| Wire Harness | Connectors |
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| B |
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| l |
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| a |
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| c |
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| k | L1 |
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| Red |
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| L2 |
Black | Red | Green |
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| To 240v |
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| 1 Phase | |||
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| Power | |||
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| supply |
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| Ring Terminal | Electrical |
| Water Heater |
| at Ground | ||
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| Service ground | |||
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| Screw | |
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Figure 8A |
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Junction Box |
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| Junction Box Cover | |
| From Home | |
| Electrical Service | |
| Red Wires | |
| (3) | |
Black Wires |
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(3) |
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| Smart Grid | |
| Cover | |
Ground Wires | 1/2” Conduit | |
Connection | ||
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Figure 8B |
Electronic Thermostat (ET) |
Electronic |
Thermostat (ET) |
Wiring Harness |
( Junction Box ) |
Wiring Harness |
( ET to ESM ) |
Energy Smart® |
Module (ESM) |
Ground Wire |
( Attached To |
8
