035-14370-000 650.75-N4UUnitary Products Group 3GENERAL INFORMATIONDESCRIPTIONThis Category IV, dual certified, direct vent and 1-pipe ventfurnace is designed for residential or commercial installationin a basement, closet, recreation room, garage or other loca-tion provided space temperature is 32°F or higher. For appli-cations in below freezing locations, refer to “BELOWFREEZING LOCATIONS” section on page 5.INSPECTIONAs soon as a unit is received, it should be inspected for possi-ble damage during transit. If damage is evident, the extent ofthe damage should be noted on the carrier's freight bill. Aseparate request for inspection by the carrier's agent shouldbe made in writing. Also, before installation the unit should bechecked for screws or bolts which may have loosened in tran-sit. There are no shipping or spacer brackets which need tobe removed.NOTES, CAUTIONS & WARNINGSThe installer should pay particular attention to the words:NOTE, CAUTION and WARNING. NOTES are intended toclarify or make the installation easier. CAUTIONS are givento prevent equipment damage. WARNINGS are given to alertthe installer that personal injury and/or equipment or propertydamage may occur if installation procedures are not handledproperly.VENT SAFETY CHECK PROCEDUREIf this furnace is replacing a common-vented furnace, it maybe necessary to resize the existing vent line and chimney toIMPROPER INSTALLATION MAY CREATE ACONDITION WHERE THE OPERATION OF THEPRODUCT COULD CAUSE PERSONAL INJURYOR PROPERTY DAMAGE.IMPROPER INSTALLATION, ADJUSTMENT,ALTERATION, SERVICE OR MAINTENANCECAN CAUSE INJURY OR PROPERTY DAMAGE.REFER TO THIS MANUAL FOR ASSISTANCEOR ADDITIONAL INFORMATION, CONSULT AQUALIFIED INSTALLER, SERVICE AGENCY ORTHE GAS SUPPLIER.THIS PRODUCT MUST BE INSTALLED INSTRICT COMPLIANCE WITH THE ENCLOSEDINSTALLATION INSTRUCTIONS AND ANYAPPLICABLE LOCAL, STATE, AND NATIONALCODES INCLUDING BUT NOT LIMITED TO,BUILDING, ELECTRICAL AND MECHANICALCODES.The furnace area must not be used as a broomcloset or for any other storage purposes, as a firehazard bay be created. Never store items such asthe following on, near or in contact with the fur-nace.1. Spray or aerosol cans, rags, brooms, dust mops,vacuum cleaners or other cleaning tools.2. Soap powders, bleaches, waxes or other cleaningcompounds; plastic items or containers; gasoline,kerosene, cigarette lighter fluid, dry cleaning fluidsor other volatile fluid.3. Paint thinners and other painting compounds.4. Paper bags, boxes or other paper productsNever operate the furnace with the blower doorremoved. To do so could result in serious personalinjury and/or equipment damage.The cooling coil must be installed in the supply airduct, downstream of the furnace. Cooled air maynot be passed over the heat exchanger.This furnace may not be common vented with anyother appliance, since it requires separate, prop-erly-sized air intake and vent lines. The furnaceshall not be connected to any type of B, BW or Lvent or vent connector, and not connected to anyportion of a factory-built or masonry chimney.