5600A05004Fig. 4 --- Return--Air Temperature18-IN. MINIMUMTO BURNERSA93044Fig. 5 --- Installation in a GarageThe furnace shall be installed so that the electrical components areprotected from water.For accessory installation details, refer to applicable installationliterature.CODES AND STANDARDSFollow all national and local codes and standards in additionto these instructions. The installation must comply withregulations of the serving gas supplier, local building, heating,plumbing, and other codes. In absence of local codes, theinstallation must comply with the national codes listed below andall authorities having jurisdiction in Canada.In the United States and Canada, follow all codes and standardsfor the following:Step 1 —SafetyS US: National Fuel Gas Code (NFGC) NFPA54--2002/ANSI Z223.1--2002 and the InstallationStandards, Warm Air Heating and Air ConditioningSystems ANSI/NFPA 90BS CANADA: National Standard of Canada, Natural Gasand Propane Installation Code (NSCNGPIC) CSAB149.1--05Step 2 —General InstallationS US: NFGC and the NFPA 90B. For copies, contact theNational Fire Protection Association Inc., BatterymarchPark, Quincy, MA 02269; or for only the NFGCcontact the American Gas Association, 400 N. Capitol,N.W., Washington DC 20001S CANADA: NSCNGPIC. For a copy, contact StandardSales, CSA International, 178 Rexdale Boulevard,Etobicoke (Toronto), Ontario, M9W 1R3, Canada.Step 3 —Combustion and Ventilation AirS US: Section 9.3 of the NFGC, Air for Combustion andVentilationS CANADA: Part 7 of the NSCNGPIC, Venting Systemsand Air Supply for AppliancesStep 4 —Duct SystemsS US and CANADA: Air Conditioning ContractorsAssociation (ACCA) Manual D, Sheet Metal and AirConditioning Contractors National Association(SMACNA), or American Society of Heating,Refrigeration, and Air Conditioning Engineers(ASHRAE) 2001 Fundamentals Handbook Chapter 34.Step 5 —Acoustical Lining and Fibrous GlassDuctS US and CANADA: current edition of SMACNA,NFPA 90B as tested by UL Standard 181 for Class IRigid Air DuctsStep 6 —Gas Piping and Gas Pipe PressureTestingS US: NFGC; chapters 5, 6, 7, and 12 and nationalplumbing codesS CANADA: NSCNGPIC Parts 3, 4, 5, A, B, E, G, andHIn the state of Massachusetts:S This product must be installed by a licensed plumber orgas fitter.S When flexible connectors are used, the maximumlength shall not exceed 36 inches.S When lever type gas shutoffs are used they shall beT--handle type.S The use of copper tubing for gas piping is not approvedby the state of Massachusetts.Step 7 —Electrical ConnectionsS US: National Electrical Code (NEC) ANSI/NFPA70--2002S CANADA: Canadian Electrical Code CSA C22.158UVB