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Residenal Electric Water Heater Use and Care Guide • 9
INSTALLATION
INSTALLATION
2
The locaon has adequate
space (clearances) for periodic
servicing. For opmal water
heater eciency in unvented
applicaons, the unit must have
unrestricted airow and requires a
minimum installaon space of 450 ³
(12.7 m³). As an example, a room that
has an 8 (2.4 m) tall ceiling and is
7-3/4 (2.3 m) long by 7-1/4 (2.2 m)
wide would contain 450 ³ (12.7 m³).
NOTICE: This Heat Pump Water Heater
may be located within a required
minimum of 6”/152 mm clearance
from the front side and 12”/305 mm
clearance from the top of the water
heater. However, for future service
consideraons, a minimum of 3 /.9 m
from any obstrucon on the front side
is recommended.
3
The oor can support the
weight of a full water heater.
Capacity Filled Weight (lbs.)
50 Gallon 573
66 Gallon 796
80 Gallon 921
4
Your area is not prone to
earthquakes. If it is, use
special straps as required by
local building codes.
NOTICE: The state of California
requires bracing, anchoring or
strapping the water heater to avoid
its moving during an earthquake.
To contact local ulies for code
requirements in your area, visit
hp://www.dsa.dgs.ca.gov, or call
1-916-445-8100 and request
instrucons. Other locaons may have
similar requirements. Check with your
local and state authories.
5
The locaon is not prone to
physical damage by vehicles,
ooding, or other risks.
Vehicle
Stop
Drain
Drain
Pan
Figure 9 - In a garage, install a vehicle stop to
avoid water heater damage.
6
Avoid locaons such as acs,
upper oors, or where a leak
might damage the structure
or furnishings. Due to the normal
corrosive acon of water, the tank will
eventually leak. To minimize property
damage from leaks, inspect and
maintain your water heater in
accordance with this manual’s
instrucons. Inspect the drain pan,
pipes, and surrounding area regularly
and x any leaks found. Drain pans are
available at your local plumbing
supplier. Leaks are frequently in the
plumbing system itself and not the
water heater.
7
The unit cannot be placed into
any type of closet or small
enclosure (less than 450 ³),
unless adequate provisions are made
for air exchange (vented or louvered
doors, wall grilles, ducng, etc.). Wall
grilles shall be a minimum size of 22
inches by 6 inches, or provide the
equivalent area of airow (a minimum
net free area of 130 in²).
For small enclosures with a minimum
installaon space of 84 ³ to 449 ³
(2.3 m³ to 12.7 m³), the following
methods of venlaon are acceptable:
• A fully louvered door.
• One wall grille located a minimum
of 12 inches from the ceiling, and a
second wall grille located a minimum
of 12 inches from the oor.
• One wall grille located a minimum
of 12 inches from the ceiling, and
an undercut door providing 3/4” of
clearance (or a minimum net free
area of 18 in²).
8
To ensure opmal
performance and
serviceability, a minimum
clearance of 6”/152 mm must be
maintained from the front side and
12”/305 mm from the top for access
and serviceability.
9
Water heaters located in
uncondioned spaces (i.e.,
garages, basements, etc.) may
require the water piping, condensate
piping, and drain piping to be insulated
to guard from freezing.
10
The air lter, condensaon
drain and controls must be
easily accessible for operaon
and service.
11
The site locaon must be free
from any corrosive elements
in the atmosphere such as
sulfur, uorine, sodium and chlorine.
These elements are found in aerosol
sprays, detergents, bleaches, air
fresheners, paint and varnish
removers, refrigerants and many other
household products. In addion,
excessive dust and lint may aect the
operaon of the unit (see “Air Filter
Maintenance” on page 36).
12
The ambient air temperature
must also be considered when
installing this unit. In Heat
Pump Mode, the air temperature
needs to be above 37°F/3°C and below
120°F/49°C for heat pump operation. If
the air temperature falls outside these
upper and lower limits, the electrical
elements will activate to meet the hot
water demand. In this scenario, the
heat pump will not operate in either
Heat Pump Mode or Hybrid Mode.
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