Whirlpool Energy Smart EE2H40RD045V User's Manual | Page 7

Whirlpool Water Heater User's Manual - Energy Smart EE2H40RD045V.
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Important: Only a new temperature and pressure relief 
valve should be used with your water heater. Do not 
use an old or existing valve as it may be damaged or 
not adequate for the working pressure of the new water 
heater. Do not place any valve between the relief valve 
and the tank.

The Temperature & Pressure Relief Valve:

!

Must be connected to an adequate discharge line.

!

Must not be in contact with any electrical part.

!

Must not be rated higher than  the working pressure 
shown on the data plate of the water heater.

The Discharge Line:

!

Must terminate a maximum of 6 inches above a 
floor drain or external to the building.

!

Must be capable of withstanding 250°F (121°C) 
without distortion.

!

Must be installed to allow complete drainage of 
both the valve and discharge line.

!

Must not be smaller than the pipe size of the relief 
valve or have any reducing coupling installed in the 
discharge line.

!

Must not be capped, blocked, plugged, or contain 
any valve between the relief valve and the end of 
the discharge line.

Solar Installation

If this water heater is used as a solar storage heater or 
as a backup for the solar system, the water supply 
temperatures to the water heater tank may be in excess 
of 120°F. A tempering valve or other temperature 
limiting valve must be installed in the water supply line 
to limit the supply temperature to 120°F.

Note: Solar water heating systems can often supply 
water with temperatures exceeding 180°F and may 
result in water heater malfunction.

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 qualified electrician perform the 
installation. 

When making the electrical connections, always make 
sure:

!

The electrical supply has the proper overload fuse 
or circuit breaker protection.

!

Wire sizes and connections comply with all 
applicable codes.

!

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

!

The water heater and electrical supply are properly 
grounded.

Figure 6 and the wiring diagram can be found on the 
next page. Always reference the wiring diagram for the 
correct electrical connection. The wiring diagram can 
also be found on the inside of the junction box cover. 

When installing the electrical wiring to the water heater:

1.

Shut off the power to the unit.

2.

Be sure tank is completely filled with water before 
making any electrical connections.

3.

Remove junction box cover that is secured by 3 
screws. Place the cover aside and view the wiring 
diagram on the inside.

4.

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. Use 
approved conduit with copper wires only or Romex.

7

Electric Shock Hazard

Disconnect power before 
servicing.
Replace all parts and panels 
before operating.
Failure to do so can result in 
death or electric shock.

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.

WARNING

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