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Bryant 120 instruction manual 312A, A02075 A02163 A02162

Models: 120

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Fig. 18 - Upflow Return Air Configurations and Restrictions

Fig. 19 - Downflow Return Air Configurations and Restrictions

Fig. 20 - Horizontal Return Air Configurations and Restrictions

A02075

A02163

A02162

312A

Page 19

Image 19

Bryant 120 instruction manual 312A, A02075 A02163 A02162

Contents

2---StageDeluxe Induced---Combustion Installation, Start-up,Operating andService and Maintenance Instructions Series 120/C 312AFURNACE RELIABILITY HAZARD SAFETY CONSIDERATIONSFig. 1 - Dimensional Drawing 312AINTRODUCTION Table 1 - Dimensions In312A DÉGAGEMENT MINIMUM EN POUCES AVEC ÉLÉMENTS Fig. 2 - Clearances to CombustiblesINSTALLATION 312AStep 6 - Gas Piping and Gas Pipe Pressure Testing ELECTROSTATIC DISCHARGE ESD PRECAUTIONS PROCEDUREStep 1 - Safety Step 2 - General InstallationCARBON MONOXIDE POISONING AND UNIT DAMAGE HAZARD LOCATIONFig. 4 - Multipoise Orientations GENERALFIRE HAZARD Fig. 5 - Installation in a GarageFig. 6 - Prohibit Installation on Back FIRE, INJURY OR DEATH HAZARDOutdoor Combustion Air Method AIR FOR COMBUSTION AND VENTILATIONFURNACE CORROSION HAZARD CARBON MONOXIDE POISONING HAZARDCARBON MONOXIDE POISONING HAZARD OutdoorsIndoors 312A21ft3 INSTALLATIONVolume VolumeLeveling Legs If Desired Fig. 10 - Leveling Legs DOWNFLOW INSTALLATIONHORIZONTAL INSTALLATION Fig. 9 - Removing Bottom Closure PanelCombustible Floor Fig. 11 - Floor and Plenum Opening DimensionsInstalled on a Combustible Floor Roll-OutProtection312A Table 4 - Opening dimensions InFig. 14 - Duct Flanges UPFLOW DOWNFLOW HORIZONTALFig. 16 - Horizontal Suspension with Straps Fig. 15 - Horizontal Unit Suspension312A Ductwork Acoustical Treatment Fig. 17 - Typical Attic InstallationFILTER ARRANGEMENT AIR DUCTS General Requirements312A Table 5 - Air Delivery - CFM With FilterHigh 312AGAS PIPING Table 5 - Air Delivery - CFM With Filter* ContDownflow Furnaces Return Air ConnectionsA02075 A02163 A02162 312AFig. 22 - Right Side Gas Entry Example Table 6 - Maximum Capacity of PipeFURNACE DAMAGE HAZARD Fig. 21 - Right Side Gas Entry ExampleELECTRICAL SHOCK AND FIRE HAZARD Fig. 24 - Field Wiring Diagram115-VWIRING ELECTRICAL CONNECTIONSFig. 25 - Relocating J-Box ELECTRICAL CONNECTION TO J-BOXTable 7 - Electrical Data J-BOXRELOCATIONElectrical Box on Furnace Casing Side. See Fig POWER CORD INSTALLATION IN FURNACE J-BOXBX. CABLE INSTALLATION IN FURNACE J-BOX 24-VWIRINGand Single-SpeedHeat Pump Fig. 27 - Two-StageFurnace with Two-SpeedAirConditioner Dual Fueland Two-SpeedAir Conditioner and Two-SpeedHeat Pump312A HI HEAT ACCESSORIESVENTING Fig. 34 - Furnace Control-PSCBlower MotorCARBON MONOXIDE POISONING HAZARD GENERAL VENTING REQUIREMENTSMASONRY CHIMNEY REQUIREMENTS 312ACHIMNEY INSPECTION CHART Fig. 35 - Chimney Inspection Chart312A Thousands of BTUH per Hour Installations with Type-B Double-WallVentConnectors ENFPA & AGA Exterior Masonry Chimney FAN + NATFig. 37 - Upflow Application-VentElbow Right Fig. 36 - Upflow Application-VentElbow Up312A then Up Fig. 39 - Downflow Application-VentElbow Up312A then Up 312A312A Fig. 49 - Using Tin Snips to Cut Tie PointsCUT HAZARD BURN HAZARD Fig. 50 - Rounded End of KnockoutFig. 51 - Knockout Pulled Loose Fig. 53 - Remove Knockout with HammerFIRE AND EXPLOSION HAZARD START-UP,ADJUSTMENT, AND SAFETY CHECKStep 2 - Start-UpProcedures Step 1 - General312A Step 3 - AdjustmentsIn the U.S Table 11 - Altitude Derate Multiplier for U.S.AFig. 55 - Orifice Hole Fig. 54 - Redundant Automatic Gas Control ValveELECTRICAL SHOCK HAZARD FURNACE OVERHEATING HAZARD Table 12 - Gas Rate cu ft/hr312A FIRE HAZARD Table 13 - Speed Selection312A ELECTRICAL SHOCK HAZARDFig. 56 - Amp. Draw Check with Ammeter Step 4 - Check Safety Controls312A 312A Step 5 - Checklist312A LevelLevel 312A312A levelELECTRICAL SHOCK, FIRE OR EXPLOSION SERVICE AND MAINTENANCEPROCEDURES Sea levelUNIT OPERATION HAZARD Step 2 - Care and MaintenanceELECTRICAL CONTROLS AND WIRING Step 1 - IntroductionCUT HAZARD Fig. 57 - Service LabelSERVICE 312A312A Fig. 58 - Wiring DiagramA07125 312A CLEANING AND/OR REPLACING AIR FILTERTable 17 - Filter size information in BLOWER MOTOR AND WHEELFig. 59 - Igniter Position-SideView CLEANING HEAT EXCHANGER9/32˝ 5/16˝ UNIT DAMAGE HAZARDFig. 60 - Igniter Position - Top View Fig. 61 - Cleaning Heat Exchanger Cell1-7/8” Step 3 - Sequence of OperationSee Fig. 24 or 33 for thermostat connections 312A4.Thermidistat Mode a.Single-SpeedCooling312A 312A Step 4 - Wiring DiagramsStep 5 - Troubleshooting 5.Continuous Blower ModeA02107A Fig. 62 - Troubleshooting Guide 2-SpeedTROUBLESHOOTING GUIDE 312A312A Fig. 63 - Troubleshooting Guide 2-SpeedA05001 Page Edition Date 02/07 Catalog No. II312A---45---8Replaces: II312A---