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INSTALLING YOUR WATER HEATER

Consumer Information

This water heater should be installed in accordance with
the local code authority having jurisdiction, the power
company or electric utility, and this installation manual.
In the absence of local code requirements, follow the
regulations set forth in the latest edition of The National
Electric Code, NFPA 70. This is available from the
following:
National Fire Protection Association
1 Batterymarch Park
Quincy, MA 02269
American National Standards Institute
1430 Broadway
New York, NY 10018
Check your phone listings for the local authorities having
jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with the
installation, operation and maintenance of your electric heat
pump water heater and to provide important safety information
in these areas.
We urge you to read all of the instructions thoroughly before
attempting the installation or operation of this water heater.
This manual should be kept for future reference.
The manufacturer of this water heater will not be liable for any
damages caused by failure to comply with the installation and
operating instructions outlined in this manual.
If you lack the necessary skills required to properly install this
water heater or you have dif

culty following the directions, you

should not proceed but have a quali

ed person perform the

installation of this water heater.

Examples of a qualified person include: licensed plumbers,
authorized electric company personnel, and authorized
service personnel.

Massachusetts code requires this water heater to be installed
in accordance with Massachusetts 248-CMR 2.00: State
Plumbing Code and 248-CMR 5.00.
A data plate identifying your water heater can be found
adjacent to the upper element door. When referring to your
water heater always have the information listed on the data
plate readily available, to include the model and serial number.
Retain your original receipt as proof of purchase.

Basic Operation Fundamentals

The Heat Pump Water Heater (HPWH) is an integrated
heat pump water heater unit, having an 850 watt
compressor and external coil heat exchanger with backup
electric elements (See Figure 1). When in Ef

ciency Mode

the heat pump draws heat from the ambient air in the room
and transfers it to the water in the tank through the coil
heat exchanger. While in Electric Mode the water heater
functions like a standard electric water heater, relying on
the electric elements to heat the water. A Hybrid Mode is
available that relies primarily on the heat pump to heat

the water while the electric elements only function during
high demand periods. (See “Adjusting the User Interface
Module/ Operational Mode” section). The more often
the unit operates using the heat pump, rather than the
elements, the more ef

cient the unit will be.

The 80-gallon tank capacity of this water heater is intended
to take optimal advantage of the heat pump’s capability to
heat water for large families or those having higher than
normal hot water requirements. This high capacity will
enable the unit to operate in the maximum ef

ciency mode

more often than other models having lower capacity.
The HPWH uses about half the electricity of a comparably
sized conventional electric water heater when operating
in the Ef

ciency Mode, and provides up to ½ ton cooling

capacity and dehumidi

cation. It is designed for indoor,

residential applications for installation in a basement,
garage or utility room (See “Location Requirements”
section).

Ambient Air

Cool/Dehumidified Air

Heat Exchanger
(Heat Transfer Coils)

Upper Element

(4500 Watt)

Lower Element

(2000 Watt)

Water Tank