5532522-UIM-B-0619Johnson Controls Ducted Systems 3CODES AND STANDARDSFollow all national, local codes and standards in addition to this installa-tion manual. The installation must comply with regulations of the serv-ing gas supplier, local building, heating, plumbing, and other codes. Inabsence of local codes, the installation must comply with the nationalcodes listed below and all authorities having jurisdiction.In the United States and Canada, follow all codes and standards for thefollowing, using the latest edition available:STEP 1 -Safety• US: National Fuel Gas Code (NFGC) NFPA 54/ANSI Z223.1 andthe Installation Standards, Warm Air Heating and Air ConditioningSystems ANSI/NFPA 90B• CANADA: CAN/CGA-B149.1 National Standard of Canada. Natu-ral Gas and Propane Installation Codes (NSCNGPIC)STEP 2 -General Installation• US: Current edition of the NFGC and NFPA 90B. For copies, con-tact theNational Fire Protection Association Inc.Batterymarch ParkQuincy, MA 02269or for only the NFGC, contact theAmerican Gas Association,400 N. Capital, N.W.Washington DC 20001or www.NFPA.org• CANADA: NSCNGPIC. For a copy contact:Standard Sales, CSA International178 Rexdale BoulevardEtobicoke, (Toronto) Ontario Canada M9W 1RSSTEP 3 -Combustion and Ventilation Air• US: Section 5.3 of the NFGC, air for Combustion and Ventilation• CANADA: Part 7 of NSCNGPIC, Venting Systems and Air Supplyfor AppliancesSTEP 4 -Duct Systems• US and CANADA: Air Conditioning Contractors Association(ACCA) Manual D, Sheet Metal and Air Conditioning ContractorsAssociation National Association (SMACNA), or American Soci-ety of Heating, Refrigeration, and Air Conditioning Engineers(ASHRAE) 1997 Fundamentals Handbook Chapter 32.STEP 5 -Acoustical Lining and Fibrous Glass Duct• US and CANADA: Current edition of SMACNA and NFPA 90B astested by UL Standard 181 for Class I Rigid Air DuctsSTEP 6 -Gas Piping and Gas Pipe Pressure Testing• US: NFGC; chapters 2, 3, 4, & 9 and National Plumbing Codes• CANADA: NSCNGPIC Part 5STEP 7 -Electrical Connections• US: National Electrical Code (NEC) ANSI/NFPA 70• CANADA: Canadian Electrical Code CSA C22.1These instructions cover minimum requirements and conform to exist-ing national standards and safety codes. In some instances theseinstructions exceed certain local codes and ordinances, especiallythose who have not kept up with changing residential and non-HUDmodular home construction practices. These instructions are requiredas a minimum for a safe installation.INSPECTIONAs soon as a unit is received, it should be inspected for possible dam-age during transit. If damage is evident, the extent of the damageshould be noted on the carrier’s freight bill. A separate request forinspection by the carrier’s agent should be made in writing. Also, beforeinstallation, the unit should be checked for screws or bolts which mayhave loosened in transit. There are no shipping or spacer bracketswhich need to be removed from the interior of this unit.FURNACE LOCATION AND CLEARANCESThe furnace shall be located using the following guidelines:1. Where a minimum amount of air intake/vent piping and elbows willbe required.2. As centralized with the air distribution as possible.3. Where adequate combustion air will be available (particularly whenthe appliance is not using outdoor combustion air).4. Where it will not interfere with proper air circulation in the confinedspace.Installation in freezing temperatures:1. Furnace shall be installed in an area where ventilation facilities pro-vide for safe limits of ambient temperature under normal operatingconditions.2. Do not allow return air temperature to be below 55ºF (13ºC) forextended periods. To do so may cause condensation to occur in themain heat exchanger, leading to premature heat exchanger failure.Clearances for access/service:Ample clearances should be provided to permit easy access to the unit.The following minimum clearances are recommended:1. Twenty-four (24) inches (61 cm) between the front of the furnaceand an adjacent wall or another appliance, when access is requiredfor servicing and cleaning.2. Eighteen (18) inches (46 cm) at the side where access is requiredfor passage to the front when servicing or for inspection or replace-ment of flue/vent connections.In all cases, accessibility clearances shall take precedence over clear-ances for combustible materials where accessibility clearances aregreater.Installation in a residential garage:A gas-fired furnace for installation in a residential garage must beinstalled so the burner(s) and the ignition source are located not lessthan 18” (46 cm) above the floor, and the furnace must be located orprotected to avoid physical damage by vehicles.WARNINGa. Improper installation in an ambient below 32ºF (0ºC) could cre-ate a hazard, resulting in damage, injury or death.!Table 1: Unit Clearances to Combustibles (All Dimensions in Inches, and All Surfaces Identified with the Unit in an Upflow Configuration)Application Top Front Rear LeftSideRightSide Flue Floor/Bottom Closet Alcove Attic LineContactIn. (cm) In. (cm) In. (cm) In. (cm) In. (cm) In. (cm)Upflow 1 (2.5) 1 (2.5) 0 (0.0) 0 (0.0) 0 (0.0) 6 (15.2) Combustible Yes Yes Yes NoUpflow B-Vent 1 (2.5) 1 (2.5) 0 (0.0) 0 (0.0) 0 (0.0) 1 (2.5) Combustible Yes Yes Yes NoHorizontal 1 (2.5) 1 (2.5) 0 (0.0) 0 (0.0) 0 (0.0) 6 (15.2) Combustible No Yes Yes Yes 11. Line contact only permitted between lines formed by the intersection of the rear panel and side panel (top in horizontal position) of the furnace jacket and buildingjoists, studs, or framing.Horizontal B-Vent 1 (2.5) 1 (2.5) 0 (0.0) 0 (0.0) 0 (0.0) 1 (2.5) Combustible No Yes Yes Yes 1