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Bryant 120 instruction manual Horizontal Unit Suspension, Horizontal Suspension with Straps, 312A

Models: 120

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312A

1/4" THREADED ROD

4 REQ.

OUTER DOOR

ASSEMBLY

SECURE ANGLE

IRON TO BOTTOM

OF FURNACE WITH 3 #8 x 3/4" SCREWS TYPICAL FOR 2 SUPPORTS

8" MIN FOR DOOR REMOVAL

1" SQUARE, 11/4" x 11/4" x 1/4" ANGLE IRON OR UNI-STRUT MAY BE USED

(2)HEX NUTS, (2) WASHERS & (2) LOCK WASHERS REQ. PER ROD

A02345

Fig. 15 - Horizontal Unit Suspension

METHOD 2

USE (42) #8 x 3/4 SHEET

METAL SCREWS TYPICAL

FOR EACH STRAPS.THE

STRAPS SHOULD BE

VERTICAL AGAINST THE

FURNACE SIDES AND NOT

PULL AWAY FROM THE

FURNACE SIDES.

METHOD 1

FOLD ALL STRAPS UNDER FURNACE AND SECURE WTH

(42) #8 x 3/4 SHEET METAL SCREWS (2 SCREWS IN SIDE AND 2 SCREWS IN BOTTOM).

A03176

Fig. 16 - Horizontal Suspension with Straps

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Bryant 120 instruction manual Horizontal Unit Suspension, Horizontal Suspension with Straps, 312A

Contents

312A Installation, Start-up,Operating andService and Maintenance Instructions Series 120/C 2---StageDeluxe Induced---Combustion312A SAFETY CONSIDERATIONSFig. 1 - Dimensional Drawing FURNACE RELIABILITY HAZARD312A Table 1 - Dimensions InINTRODUCTION 312A Fig. 2 - Clearances to CombustiblesINSTALLATION DÉGAGEMENT MINIMUM EN POUCES AVEC ÉLÉMENTSStep 2 - General Installation ELECTROSTATIC DISCHARGE ESD PRECAUTIONS PROCEDUREStep 1 - Safety Step 6 - Gas Piping and Gas Pipe Pressure TestingGENERAL LOCATIONFig. 4 - Multipoise Orientations CARBON MONOXIDE POISONING AND UNIT DAMAGE HAZARDFIRE, INJURY OR DEATH HAZARD Fig. 5 - Installation in a GarageFig. 6 - Prohibit Installation on Back FIRE HAZARDCARBON MONOXIDE POISONING HAZARD AIR FOR COMBUSTION AND VENTILATIONFURNACE CORROSION HAZARD Outdoor Combustion Air Method312A OutdoorsIndoors CARBON MONOXIDE POISONING HAZARDVolume INSTALLATIONVolume 21ft3Fig. 9 - Removing Bottom Closure Panel Fig. 10 - Leveling Legs DOWNFLOW INSTALLATIONHORIZONTAL INSTALLATION Leveling Legs If DesiredRoll-OutProtection Fig. 11 - Floor and Plenum Opening DimensionsInstalled on a Combustible Floor Combustible FloorUPFLOW DOWNFLOW HORIZONTAL Table 4 - Opening dimensions InFig. 14 - Duct Flanges 312A312A Fig. 15 - Horizontal Unit SuspensionFig. 16 - Horizontal Suspension with Straps AIR DUCTS General Requirements Fig. 17 - Typical Attic InstallationFILTER ARRANGEMENT Ductwork Acoustical TreatmentTable 5 - Air Delivery - CFM With Filter 312A312A HighReturn Air Connections Table 5 - Air Delivery - CFM With Filter* ContDownflow Furnaces GAS PIPING312A A02075 A02163 A02162Fig. 21 - Right Side Gas Entry Example Table 6 - Maximum Capacity of PipeFURNACE DAMAGE HAZARD Fig. 22 - Right Side Gas Entry ExampleELECTRICAL CONNECTIONS Fig. 24 - Field Wiring Diagram115-VWIRING ELECTRICAL SHOCK AND FIRE HAZARDJ-BOXRELOCATION ELECTRICAL CONNECTION TO J-BOXTable 7 - Electrical Data Fig. 25 - Relocating J-Box24-VWIRING POWER CORD INSTALLATION IN FURNACE J-BOXBX. CABLE INSTALLATION IN FURNACE J-BOX Electrical Box on Furnace Casing Side. See FigDual Fuel Fig. 27 - Two-StageFurnace with Two-SpeedAirConditioner and Single-SpeedHeat Pump312A and Two-SpeedHeat Pumpand Two-SpeedAir Conditioner Fig. 34 - Furnace Control-PSCBlower Motor ACCESSORIESVENTING HI HEAT312A GENERAL VENTING REQUIREMENTSMASONRY CHIMNEY REQUIREMENTS CARBON MONOXIDE POISONING HAZARD312A Fig. 35 - Chimney Inspection ChartCHIMNEY INSPECTION CHART Exterior Masonry Chimney FAN + NAT Installations with Type-B Double-WallVentConnectors ENFPA & AGA Thousands of BTUH per Hour312A Fig. 36 - Upflow Application-VentElbow UpFig. 37 - Upflow Application-VentElbow Right 312A Fig. 39 - Downflow Application-VentElbow Upthen Up 312A then UpCUT HAZARD Fig. 49 - Using Tin Snips to Cut Tie Points312A Fig. 53 - Remove Knockout with Hammer Fig. 50 - Rounded End of KnockoutFig. 51 - Knockout Pulled Loose BURN HAZARDStep 1 - General START-UP,ADJUSTMENT, AND SAFETY CHECKStep 2 - Start-UpProcedures FIRE AND EXPLOSION HAZARDTable 11 - Altitude Derate Multiplier for U.S.A Step 3 - AdjustmentsIn the U.S 312AELECTRICAL SHOCK HAZARD Fig. 54 - Redundant Automatic Gas Control ValveFig. 55 - Orifice Hole 312A Table 12 - Gas Rate cu ft/hrFURNACE OVERHEATING HAZARD ELECTRICAL SHOCK HAZARD Table 13 - Speed Selection312A FIRE HAZARD312A Step 4 - Check Safety ControlsFig. 56 - Amp. Draw Check with Ammeter Step 5 - Checklist 312ALevel 312A312A Levellevel 312ASea level SERVICE AND MAINTENANCEPROCEDURES ELECTRICAL SHOCK, FIRE OR EXPLOSIONStep 1 - Introduction Step 2 - Care and MaintenanceELECTRICAL CONTROLS AND WIRING UNIT OPERATION HAZARD312A Fig. 57 - Service LabelSERVICE CUT HAZARDA07125 Fig. 58 - Wiring Diagram312A BLOWER MOTOR AND WHEEL CLEANING AND/OR REPLACING AIR FILTERTable 17 - Filter size information in 312AUNIT DAMAGE HAZARD CLEANING HEAT EXCHANGER9/32˝ 5/16˝ Fig. 59 - Igniter Position-SideViewStep 3 - Sequence of Operation Fig. 61 - Cleaning Heat Exchanger Cell1-7/8” Fig. 60 - Igniter Position - Top View312A See Fig. 24 or 33 for thermostat connections312A a.Single-SpeedCooling4.Thermidistat Mode 5.Continuous Blower Mode Step 4 - Wiring DiagramsStep 5 - Troubleshooting 312A312A Fig. 62 - Troubleshooting Guide 2-SpeedTROUBLESHOOTING GUIDE A02107AA05001 Fig. 63 - Troubleshooting Guide 2-Speed312A Page Replaces: II312A--- Catalog No. II312A---45---8Edition Date 02/07