58PAVUpflow Induced-Combustion FurnacesInstallation, Start-Up, and Operating InstructionsSizes 045-155, Series 141NOTE: Read the entire instruction manual before starting theinstallation.This symbol → indicates a change since the last issue.Index PageSAFETY CONSIDERATIONS .....................................................1Clearances From Combustible Materials .................................1Dimensional Drawing ...............................................................2ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONSPROCEDURE........................................................................2-3INTRODUCTION ..........................................................................3LOCATION....................................................................................3General ......................................................................................3Location Relative to Cooling Equipment ................................3Hazardous Locations.................................................................3AIR FOR COMBUSTION AND VENTILATION...................3-5Unconfined Space .....................................................................4Confined Space......................................................................4-5FILTER ARRANGEMENT .......................................................5-6LEVELING LEGS (IF REQUIRED).........................................5-6GAS PIPING...............................................................................6-7ELECTRICAL CONNECTIONS ..................................................7115-v Wiring.............................................................................724-v Wiring...............................................................................7Accessories................................................................................7VENTING ......................................................................................7START-UP, ADJUSTMENT, AND SAFETY CHECK.........7-14General...................................................................................7-8Sequence Of Operation .......................................................8-11Heating Mode ........................................................................8-9Cooling Mode ...........................................................................9Continuous Blower Mode.........................................................9Heat Pump Mode.................................................................9-11Start-Up Procedures ................................................................11Adjustments .......................................................................11-14Set Gas Input Rate ............................................................11-12Set Temperature Rise ........................................................12-13Set Thermostat Heat Anticipator............................................13Check Safety Controls.......................................................13-14Checklist..................................................................................14SAFETY CONSIDERATIONSInstalling and servicing heating equipment can be hazardous due togas and electrical components. Only trained and qualified person-nel should install, repair, or service heating equipment.Untrained personnel can perform basic maintenance functionssuch as cleaning and replacing air filters. All other operations mustbe performed by trained service personnel. When working onheating equipment, observe precautions in the literature, on tags,and on labels attached to or shipped with the unit and other safetyprecautions that may apply.Follow all safety codes. In the United States, follow all safetycodes including the National Fuel Gas Code (NFGC) NFPA No.54-1992/ANSI Z223.1-1992. In Canada, refer to the currentedition of the National Standard of Canada CAN/CGA-B149.1-and .2-M91 Natural Gas and Propane Installation Codes (NSC-NGPIC). Wear safety glasses and work gloves. Have fire extin-guisher available during start-up and adjustment procedures andservice calls.Recognize safety information. This is the safety-alert symbol .When you see this symbol on the furnace and in instructions ormanuals, be alert to the potential for personal injury.Understand the signal words DANGER, WARNING, and CAU-TION. These words are used with the safety-alert symbol. DAN-GER identifies the most serious hazards which will result in severepersonal injury or death. WARNING signifies a hazard whichcould result in personal injury or death. CAUTION is used toidentify unsafe practices which would result in minor personalinjury or product and property damage. NOTE is used to highlightsuggestions which will result in enhanced installation, reliability,or operation.These instructions cover minimum requirements and conform toexisting national standards and safety codes. In some instances,these instructions exceed certain local codes and ordinances,especially those that may not have kept up with changing residen-tial construction practices. We require these instructions as aminimum for a safe installation.ama®CANADIAN GAS ASSOCIATIONA P P R O V E DRTable 1—Minimum Clearances ToCombustible Materials (In.)UNIT SIZE 045 AND 070 090-155Sides Single-Wall Vent 1 0Type B-1 Double-Wall Vent 0 0Back 0 0Plenum Top 1 1Vent Single-Wall Vent 6 6Type B-1 Double-Wall Vent 1 1Front Single-Wall Vent 6 6Type B-1 Double-Wall Vent 3 3Service 30 30NOTES:1. Provide 30-in. front clearance for servicing. An open door in front of the unitcan meet this requirement.2. A minimum clearance of 3 in. must be provided in front of the unit forcombustion air and proper operation.Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.Book 1 4Tab 6a 8a PC 101 Catalog No. 565-808 Printed in U.S.A. Form 58PA-10SI Pg 1 7-95 Replaces: 58PA-9SI