State EPX 80 DHPT User Manual download pdf (Page 10)

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 ush 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.

Figure 7

T&P Relief Valve Insulation

T&P Relief Valve

Drain Line

Manual Relief Lever

T&P Relief Valve Insulation

Electrical Requirements

If you lack the necessary skills required to properly install the

electrical wiring to this water heater, do not proceed but have a

qualied 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 9A, 9B & 10 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. See figure 8.

4. Loosen the screws securing the electrical junction box

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.

WARNING

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.

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.

Figure 8

Louvered Panel

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 21 22

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State EPX 80 DHPT User Manual Page 10

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