Install all conditioned air plenums, ducts and air filters in
accordance with NFPA 90B Standard for the Installation of
Warm Air Heating and Air-Conditioning Systems (latest
The furnace is provided with flanges for the connection of the
plenum and ducts.
All air filters must be listed as Class 2 air filters.
All ductwork must be made of materials and insulated to
meet local, state and national codes. Ductwork installed
outdoors must be sealed, weatherproof and protected
against physical damage. Caulking, flashing or other means
of adequately providing a permanent weather seal should be
used where duct penetrates a building or structure opening.
Electrical Shock Hazard
Electrically ground furnace.
Connect ground wire to ground terminal
Use copper wire for supply connection.
Correct wire gauge is shown in the chart below.
Failure to follow these instructions can result in
death or electrical shock.
Rating Plate Ampacity
Less than 15
16 - 20
21 - 30
31 - 50
NOTE: All outdoor wiring must be suitable for outdoor use. Use
copper conductors only.
This furnace is equipped for use with Natural gas. A conversion
kit is required for use with propane. To order the correct
conversion kit, see "Accessories."
All field wiring must be done in accordance with National
Electrical Code requirements, applicable requirements of UL,
or local codes, where applicable.
Electrical wiring, disconnect means and over current
protection are to be supplied by the installer. Refer to the
rating plate for the maximum over current protection,
minimum service ampacity, and operating voltage. See the
wiring connection diagrams in "Troubleshooting."
This furnace must be electrically grounded in accordance
with National Electric Code (ANSI/NFPA 70) requirements,
applicable requirements of UL, or local codes, where
Gas Supply Requirements
Gas supply piping should be installed in accordance with
local, state and national codes and the regulations of the
utility. Piping must be of adequate size to prevent undue
pressure drop. Consult the local utility or gas supplier for
complete details on special requirements for sizing gas
If local codes allow the use of a flexible gas appliance
connector, use an CSA design-certified outdoor flexible
stainless steel appliance connector or rigid gas supply line as