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Electrical Requirements
NOTE: Use copper conductors only.
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All field wiring must be done in accordance with National
Electrical Code, applicable requirements of UL and local
codes.
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Electrical wiring, disconnect means and overcurrent
protection are to be supplied by the installer. Refer to the
electric furnace rating plate for maximum overcurrent
protection, minimum circuit ampacity, as well as operating
voltage.
■
The power supply must be sized and protected according to
the specifications supplied on the product.
■
This electric furnace is factory configured for 240 Volt, single
phase, 60 cycles. For 208 Volt applications, see “208 Volt
Conversion” in the “Make Electrical Connections” section.
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For optional electric heater applications, see “Accessories.”
Refer to the instructions provided with the accessory for
proper installation.
Duct Work Requirements
■
Install the conditioned air plenum, ducts and air filters (not
provided) in accordance with NFPA 90B Standard for the
Installation of Warm Air Heating and Air-Conditioning
Systems (latest edition).
■
The electric furnace is provided with flanges for the
connection of the plenum and ducts.
■
Air filters must be listed as Class 2 furnace air filters.
■
Supply and return duct work must be adequately sized to
meet the system’s air requirements and static pressure
capabilities. Duct work should be insulated with a minimum
of 1 in. thick insulation with a vapor barrier in conditioned
areas or 2 in. minimum in unconditioned areas.
■
Supply plenum should be the same size as the flanged
opening provided around the blower outlet and should
extend ideally at least 3 ft from the electric furnace before
turning or branching off plenum into duct runs.The plenum
forms an extension of the blower housing and minimizes air
expansion losses from the blower.
INSTALLATION
INSTRUCTIONS
Inspect Shipment
The electric furnace is completely factory assembled, and all
components are performance tested. Each unit consists of a
blower assembly and controls in an insulated, galvanized factory
finished enclosure. Knockouts are provided for electrical wiring
entrance.
1. Check the unit rating plate to confirm specifications are as
ordered.
2. Upon receipt of equipment, carefully inspect it for possible
shipping damage. Take special care to examine the unit
inside the carton if the carton is damaged.
If damage is found, it should be noted on the carrier’s freight bill.
Damage claims should be filed with the carrier immediately.
Claims of shortages should be filed with the seller within 5 days.
NOTE: If any damages are discovered and reported to the carrier,
do not install the unit as your claim may be denied.
WARNING
Electrical Shock Hazard
Electrically ground furnace.
Connect ground wire to green pigtail lead.
Failure to do so can result in death or electrical shock.
Excessive Weight Hazard
Use two or more people to move and install furnace.
WARNING
Failure to do so can result in back or other injury.
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