Installation Guide

Residen al Electric Water Heater Use and Care Guide • 19
Smart Grid Technology
The electric Smart Grid will enable sig-
nifi cant improvements in electric power
reliability and quality through reduc on
of peak power demand, while providing
consumers the knowledge and ability to
manage their energy consump on and
u lity costs.
According to the Department of
Energy (DOE), since 1982 the growth
in peak electricity demand has exceed-
ed power transmission growth. This
has caused more frequent blackouts
and service interruptions, as well as an
increase in the costly reserve capac-
ity the power grid requires to meet
higher peak demands. The increased
demand for electrical power across
the nation has also led to higher peak
utility costs.
Smart appliances are one way to
help mitigate this problem. By using
advanced digital communication tech-
nologies, smart appliances will be
able to communicate with local power
company or home energy manage-
ment systems, and react accordingly
to save energy and money. For exam-
ple, during peak demand periods the
water heater may pause or delay its
power consumption and thus reduce
the load on the smart utility grid.
Additionally, smart appliances will also
communicate with consumers to let
them know how much energy they are
consuming. This will eventually allow
consumers to control their appliances,
manage energy usage, and to ulti-
mately save money.
Smart Grid Control
(Where Available)
Where available, Grid Communica on
Adaptors may be supplied by the local
power company or purchased from lead-
ing retailers. Please contact your local
power company for more informa on.
To ac vate Smart Grid Control, remove
the cover over the grid connec on pins
and plug in the grid communica on
adaptor. See Figure 11. NOTE: use only
approved grid communica on adaptors.
This will enable the power company to
communicate the peak demand periods
for the water heater’s power usage.
A er this connec on has
been made, simply press
the “Grid Enabled” bu on
to enable and/ or disable a request for
grid control. See Figure 12. Enabling this
feature will allow acceptance of the
power company communica on of grid
management requests. Disabling this
feature will allow the water heater to
ignore grid management requests.
NOTE: Smart Grid will be disabled when
the Energy Smart
®
Module (ESM) is dis-
connected from the junc on box wiring
harness (see page 18).
INSTALLATION
Smart Grid Connec on
Smart Grid Control
Figure 12
°F/°C
GRID
ENABLED
VACATION
STANDARD
ENERGY
SMART
F
LOCK
GRID
Pressing this button will
enable and/or disable a
request for Smart Grid Control
Figure 11
Grid Connection
Pins
Junction Box
Grid
Communication
Adaptor
(May Be Supplied By Power Company)
(May Dier in Appearance)
WARNING! Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before
opera ng.
Failure to do so can result in death or
electrical shock.