3
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
fi
culty following the directions, you
should not proceed but have a quali
fi
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 a compressor and
external coil heat exchanger with backup electric elements
(Figure 1). When in Ef
fi
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.
The backup element will turn on as a booster if the tank
temperature is too low from the set point during high
demand period, or if environmental conditions don't provide
enough heat to meet demand. 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
fi
cient the unit will be.
The HPWH uses about half the electricity of a comparably
sized conventional electric water heater when operating
in the Ef
fi
ciency/Hybrid Modes, and may provide up
to ½ ton cooling capacity and dehumidi
fi
cation. It is
designed for indoor, residential applications for installation
in a basement, garage or utility room (See “Location
Requirements” section).
Unpacking the Water Heater
WARNING
Excessive Weight Hazard
Use two or more people to move and install
water heater.
Failure to do so can result in back or
other injury.
Removing Packaging Materials
IMPORTANT:
Do not remove, cover or deface any
permanent instructions, labels, or the data label from either
the outside of the water heater or on the inside of water
heater panels.
Figure 1
Heat Pump Water Heater Basic Operation