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Bryant 355CAV installation instructions Derated 2% / 1000 Ft. Above Sea Level

Models: 355CAV

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Orifice Size* and Manifold Pressures for Gas Input Rate

(Tabulated Data Based on 20,000 BTUH High Heat / 13,000 Btuh Med-Heat / 8,000 Btuh Low-Heat per Burner,

Derated 2% / 1000 Ft. Above Sea Level)

355CAV

A07254

Page 56

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Bryant 355CAV installation instructions Derated 2% / 1000 Ft. Above Sea Level

Contents

TABLE OF CONTENTS Fig. 1 - Furnace OrientationFURNACE RELIABILITY HAZARD Installation InstructionsRequired Notice for Massachusetts Installations SAFETY CONSIDERATIONS 355CAVCUT HAZARD FURNACE RELIABILITY HAZARD355CAV Dimensions In. / mmFig. 2 - Dimensional Drawing 355CAV Fig. 3 - Clearances to CombustiblesINSTALLATION Fig. 4 - Return-AirTemperature Fig. 5 - Installation in a GarageSafety General InstallationELECTROSTATIC DISCHARGE ESD PRECAUTIONS INTRODUCTIONAPPLICATIONS UPFLOW APPLICATIONFig. 6 - Condensate Trap Condensate Trap Alternate Upflow OrientationCARBON MONOXIDE POISONING HAZARD 355CAVPressure Switch Tubing Upper Inducer Housing Drain ConnectionCondensate Trap Field Drain Attachment Fig. 8 - Alternate Trap LocationDOWNFLOW APPLICATIONS Fig. 9 - Condensate TrapCondensate Trap Location Condensate Trap TubingFig. 11 - Horizontal Left Tube Configuration HORIZONTAL LEFT SUPPLY-AIRDISCHARGE APPLICATIONSPressure Switch Tubing 355CAVVent 2-PipeApplication PROPERTY DAMAGEPressure Switch Tubing 355CAVFig. 14 - Horizontal Right Tube Configuration HORIZONTAL RIGHT SUPPLY-AIRDISCHARGE APPLICATIONSConstruct a Working Platform UNIT OPERATION HAZARDLOCATION Condenste Trap Field Drain AttachmentPressure Switch Tubing 355CAVFig. 16 - Prohibit Installation on Back FIRE OR DEATH HAZARDFig. 17 - Freeze Protection Furnace Location Relative to Cooling EquipmentINSTALLATION Installation in Upflow or Downflow ApplicationsInstallation in Horizontal Applications Hazardous LocationsFig. 22 - Duct Flanges Combustible FloorInstalled on a Combustible Floor 355CAV355CAV AIR DUCTS General RequirementsDuctwork Acoustical Treatment Supply Air Connections Upflow FurnacesReturn Air Connections FIRE HAZARDUpflow Furnaces Downflow and Horizontal FurnacesFig. 24 - Filter Installed for Side Inlet Bottom Closure PanelGas Piping FIRE OR EXPLOSION HAZARDFig. 26 - Removing Bottom Closure Panel Fig. 27 - Typical Gas Pipe ArrangementFig. 28 - Casing Pipe Grommets 355CAV115-vWiring Table 3 - Maximum Capacity of PipeELECTRICAL SHOCK HAZARD 355CAVFig. 30 - Disconnect Switch and Furnace Table 4 - Electrical DataELECTRICAL SHOCK AND FIRE HAZARD 355CAVFactory Installed J-BoxLocation 24-vwiringFig. 31 - Factory Installed J-BoxLocation AccessoriesAIR FOR COMBUSTION AND VENTILATION Combustion-Airand Vent Pipe SystemsDirect Vent / 2-PipeSystem Ventilated Combustion Air Option MaterialsASTM MATERIALPIPE FITTINGSFig. 33 - Furnace Control 355CAVA06675 Fig. 34 - Direct Vent Termination Clearance355CAV 355CAV A05013A05091 355CAVA05090 Location and Elbow Configuration COMBUSTION AIR PIPEFig. 38 - Combustion Air and Vent Pipe Transition UNIT CORROSION HAZARDFig. 40 - Intake Housing Plug Fitting Drain 355CAVUNIT CORROSION HAZARD CARBON MONOXIDE POISONING HAZARDVENT PIPE CARBON MONOXIDE POISONING ANDAttachment of Vent Pipe 355CAV304.8mm minimum 76.2 mm minimum 304.8 mm minimumFig. 41 - Attic Termination Fig. 42 - Crawlspace TerminationFig. 43 - Crawlspace Termination 304.8mm minimum355CAV 3” 76.2mm minimumVENT TERMINATION Extended Exposed Sidewall Pipes355CAV General5.Check required dimensions as shown 355CAVWinter Design Temperature Ambient 355CAVTable 7 - Maximum Allowable Pipe Length Ft / M 355CAVUNIT SIZE CONDENSATE DRAIN DIRECT VENT 2 PIPE TERMINATIONTERMINATION SYSTEM DIAMETER OF COMBUSTION AIRSTART-UP,ADJUSTMENT AND SAFETY CHECK Step 2 - Select Setup Switch PositionsAir Conditioning A/C Setup Switches Continuous Fan CF Setup SwitchesFig. 48 - Example of Setup Switch in Off Position Prime Condensate Trap with Water355CAV UNIT OPERATION HAZARDA06677 Fig. 49 - Wiring Diagram355CAV Fig. 50 - Inducer Housing Drain Tube Table 9 - Furnace Setup Switch DescriptionFig. 51 - Filling Condensate Trap 355CAVStep 3 - Sequence of Operation Purge Gas LinesSingle-StageThermostat and Step-ModulatingHeating Adaptive Mode355CAV Two-StageThermostat and Two-StageMedium/HighHeating 355CAV Cooling ModeThermidistat Mode Super Dehumidify Mode Continuous Blower ModeContinuous Blower Speed Selection from Thermostat Heat PumpConditioning ConditionerPump Dual Fuel 355CAVPump Furnace and Two-SpeedAir ConditionerFurnace and Two-SpeedHeat Pump 355CAVStep 4 - Adjustments Set Gas Input RateFig. 60 - Redundant Automatic Gas Valve 355CAVUNIT DAMAGE HAZARD Fig. 61 - Burner Orifice355CAV Derated 2% / 1000 Ft. Above Sea Level 355CAV355CAV Derated 2% / 1000 Ft. Above Sea LevelTable 11 - Altitude Derate Multiplier for U.S.A Fig. 62 - Burner Flame355CAV UNIT DAMAGE HAZARDSet Temperature Rise Table 12 - Gas Rate cu Ft/HrSet Thermostat Heat Anticipator 355CAVCHECKLIST Check Safety ControlsCheck Pressure Switches Check Primary Limit ControlCHECKLIST - INSTALLATION Safety Controls Check OperationCHECKLIST --- START---UP 355CAV