Univex EPX-80DHPT, 318258-000 Electrical Requirements, Electric Shock Hazard

Models: 318258-000 EPX-80DHPT

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Electrical Requirements

Figure 6

T&P Relief Valve Insulation

T&P Relief Valve Insulation

Manual Relief Lever

T&P Relief Valve

T&P Relief Valve

Drain Line

4.Locate the hot water (outlet) & cold water (inlet) pipes to the water heater.

5.Locate the slit running the length of a section of pipe insulation.

6.Spread the slit open and slip the insulation over the cold water (inlet) pipe. Apply gentle pressure along the length of the insulation to ensure that it is fully seated around the pipe. Also, ensure that the base of the insulation is flush with the water heater. Once seated, secure the insulation with duct tape, electrical tape, or equivalent.

7.Repeat steps 5 and 6 for the hot water (outlet) pipe.

8.Add additional sections of pipe insulation as needed.

Electrical Requirements

Electric Shock HazardWARNING

Electric Shock Hazard

Disconnect power before servicing.

Replace all parts and panels before operating.

Failure to do so can result in death or electrical shock.

Disconnect power before servicing.WARNING

Fire Hazard

Use 10 gauge solid copper wire.

Use a UL listed or

CSA approved strain relief.

Connect ground wire to green ground wire.

Failure to do so can result in death, fire, or electrical shock.

If you lack the necessary skills required to properly install the electrical wiring to this water heater, do not proceed but have a qualified electrician perform the installation.

When making the electrical connections, always make sure:

The electrical service provides 240 VAC to the water heater for proper operation. DO NOT use 208 VAC.

Wire sizes and connections comply with all applicable codes or in the absence of local or state codes follow NFPA-70, the National Electrical Code-current edition.

Wiring enclosed in approved conduit (if required by local codes).

The water heater and electrical supply are properly grounded.

The electrical supply has the proper overload fuse or

breaker protection.

Figures 8A & 9 are provided as reference drawings. Always reference the wiring diagram located on the water heater for the correct electrical connections and connect the electrical supply to the water heater in accordance with local utility requirements and codes.

When installing the electrical wiring to the water heater:

1.Although this water heater is equipped with “Dry Fire” protection circuitry, be sure tank is completely filled with water, and all air is purged from the tank before making any electrical connections. See “Draining and Flushing Section”.

2.Turn off power to the electrical wiring for the water heater at the circuit breaker/fuse box.

3.Remove the left louvered access panel (when facing the water heater) by loosening the screws securing it to the water heater.

4.Loosen the screws securing the electrical junction box

Figure 7

Louvered Panel

cover to the water heater and set aside.

5.Connect the electrical supply to the water heater.

A standard 1/2 inch opening has been made in the junction box for conduit connections.

6.Connect ground wire to green ground wire in the electrical junction box of the water heater.

7.Reinstall the junction box cover.

8.Reattach the left louvered access panel to the water heater and secure it using the screws loosened earlier.

9.Turn on electrical power to the water heater.

10.Press the power button to turn the water heater on, then press the Efficiency button to set the operating mode. NOTE: The water heater will conduct a system diagnostic (approximately 8 minutes) prior to returning to operation.

11.Once the diagnostic sequence has finished, the fan should turn on.

NOTE: The heat pump’s fan will not turn on if the incoming water temperature is less than 59 °F and/or the ambient air temperature is above 109 °F or below 45 °F. Should the internal diagnostics detect a problem with the heat pump, an error message will be displayed.

12.Set the operational mode. For standard installation, the Hybrid Mode offers the best combination of efficiency and hot water delivery. For detailed descriptions of all operational modes see “Adjusting the User Interface Module/Operational Modes” section.

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Univex EPX-80DHPT, 318258-000 Electrical Requirements, Electric Shock Hazard, Disconnect power before servicing