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FURNACE AND RETURN DUCTWORK. THE FLOOR OR PLATFORM MUST PROVIDE
SOUND PHYSICAL SUPPORT FOR THE FURNACE WITHOUT CRACKING, GAPS, SAGGING
ETC. AROUND THE BASE AS TO PROVIDE A SEAL BETWEEN THE SUPPORT AND THE
BASE.
FAILURE TO PREVENT PRODUCTS OF COMBUSTION FROM ENTERING THE RETURN AIR
SUPPLY MAY CAUSE SEVERE ILLNESS OR DEATH FROM CARBON MONOXIDE
POISONING.
Install the return air to terminate through the base under the furnace. For installations where
return air ducts cannot be run under the floor, the return air supply may be taken from the side(s).
WHERE THE MAXIMUM REQUIRED AIR FLOW IS 1800 CFM OR GREATER THE BOTTOM
OR BOTH SIDES MUST BE UTILIZED FOR RETURN AIR SUPPLY. NEVER USE THE REAR
OF THE FURNACE FOR THE RETURN CONNECTION.
A SOLID METAL BASEPLATE IS SUPPLIED WITH THIS FURNACE. THIS BASEPLATE MUST
BE IN PLACE WHEN THE FURNACE IS INSTALLED WITH SIDE(S) RETURN AIR DUCTS.
FAILURE TO DO SO MAY PERMIT COMBUSTION PRODUCTS TO ENTER THE LIVING
SPACE. THIS MAY CREATE POTENTIALLY HAZARDOUS CONDITIONS SUCH AS CARBON
MONOXIDE POISONING OR DEATH. FULL SIZE RETURN AIR DUCT OPENINGS MUST BE
UTILIZED. EMBOSSES ARE PROVIDED FOR THIS PURPOSE.
I ELECTRICAL SUPPLY CONNECTIONS ]
The electrical requirements are listed on the series and rating plate on the furnace. A separate
supply line with a current overload device and a manual switch, where required, must be installed.
Type "T" wire or equivalent with a minimum rating of 95°F ( 35°C ) temperature rise must be run
directly from the main power supply to the junction box in the furnace. Copper conductors are
required.
Installation of the electrical supply must be in accordance with local codes. In the absence of
local codes refer to the National Electrical Code ANSI/NFPA No. 70 (latest edition), which can be
obtained from the National Fire Protection Association, Batterymarch Park, Quincy, MA 02269. In
Canada refer to the latest edition of the Canadian Electrical Code C22.1 Part I.
I CONTROL VOLTAGE CONNECTIONS 1
THERMOSTAT INSTALLATION:
Install the thermostat in accordance with the instructions accompanying the thermostat. Run the
thermostat wires into the control compartment of the furnace. Connect the thermostat wiring as
shown on the wiring diagram. The thermostat wiring should be a minimum of 18 gauge. Adhere to
recommended color code to facilitate future troubleshooting.
The thermostat should be located near the return air grille or opening. It should be approximately
5 feet from the floor level. Never locate the thermostat where it will be influenced by heat
generated by hot water pipes, lamps, televisions, direct sunlight, supply air registers, etc.
IO-151 12
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