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Upflow Stand
Figure 4. Optional Upfl ow Stand
FURNACE INSTALLATION
NOTE: Since all installations are different, the sequence of
these steps may differ from the actual installation. These
installation procedures are suggested for typical furnace
installations. Only qualifi ed HVAC technicians should
install this furnace.
General Information
The E3 Electric furnace is designed only for indoor
installations and can be readily connected to the high
static duct system of a home. Units are approved for single/
multistory residential or mobile/modular/manufactured
structures in upfl ow, downfl ow, (freestanding/closet/
alcove) confi gurations.
This appliance will provide many years of safe and
dependable comfort, providing it is properly installed
and maintained. Abuse, improper use, and/or improper
maintenance can shorten the life of the appliance and
create unsafe hazards. Please read all instructions before
installing the unit.
Approved installation, operation, and maintenance of
this appliance must be in accordance with the listed
specifi cations contained in these instructions and other
documents supplied with the furnace and/or optional air
conditioning equipment. Unless it is noted differently in this
manual, only use factory authorized kits and accessories
when modifying this appliance. Refer to local authorities
having jurisdiction for further information.
Before You Install this Furnace
This equipment is securely packaged at the time of
shipment and upon arrival should be carefully inspected
for damage prior to installing the equipment at the job
site. Claims for damage (apparent or concealed) should
be fi led immediately with the carrier.
Check the electrical supply and verify the power supply
is adequate for unit operation. The system must be wired
and provided with circuit protection in accordance with
8
24 3/4" (628 mm)
20"
(508 mm)
20" (508 mm)
local building codes. If there is any question concerning
the power supply, contact the local power company.
Verify the air delivery of the furnace is adequate to
handle the static pressure drop of the coil, fi lter, and
duct work.
Locating the Unit
• Survey the job site to determine the best location for
installing the unit. Consideration should be given to
availability of electric power, service access, and noise.
• The dimensions of the room or alcove must be able
to accommodate the overall size of the unit and the
installation clearances in Table 1 (page 5). Physical
dimensions for this furnace are shown in Figure 21
(page 18). If an upfl ow stand will be used, see Figure
22 for component dimensions.
• The unit must be leveled at installation and attached to
a properly installed duct system.
• The surface that the furnace is mounted on must provide
sound physical support of the unit.
Optional Equipment
NOTE: Refer to the instructions supplied with any additional
accessories for further installation details.
Return Air Grille
A return air grille and frame assembly (Figure 2, page
7) is available for use in unducted return air installations.
In downfl ow alcove installations, the grille and frame
assembly may be mounted directly to the top of the furnace.
In closet installations, a wall mount grille is available for
attachment to a door or wall.
Optional Automatic Furnace Damper (901083)
Furnace may be equipped with the optional automatic
damper when a packaged air conditioner is installed and
connected to the warm air duct system. This damper (not
required) prevents cooled air from discharging through
the furnace cabinet, causing excessive cooling of the
immediate area. Refer to the instructions supplied with
the damper for details.
Duct Connectors for Downfl ow Systems
Duct connectors are recommended for heated air
distribution in under-the-fl oor duct systems. With this
system, furnaces may be installed on combustible fl ooring
without a separate sub-base. The furnace rear mounting
plate (Figure 8, page 10) supplied with the duct connectors
is recommended for use with this type of installation.
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