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

Models: 355CAV

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Table 10 – 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

A07253

Page 55

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

Contents

Installation Instructions TABLE OF CONTENTSFig. 1 - Furnace Orientation FURNACE RELIABILITY HAZARDRequired Notice for Massachusetts Installations FURNACE RELIABILITY HAZARD SAFETY CONSIDERATIONS355CAV CUT HAZARDFig. 2 - Dimensional Drawing Dimensions In. / mm355CAV INSTALLATION Fig. 3 - Clearances to Combustibles355CAV General Installation Fig. 4 - Return-AirTemperatureFig. 5 - Installation in a Garage SafetyUPFLOW APPLICATION ELECTROSTATIC DISCHARGE ESD PRECAUTIONSINTRODUCTION APPLICATIONS355CAV Fig. 6 - Condensate TrapCondensate Trap Alternate Upflow Orientation CARBON MONOXIDE POISONING HAZARDFig. 8 - Alternate Trap Location Pressure Switch TubingUpper Inducer Housing Drain Connection Condensate Trap Field Drain AttachmentCondensate Trap Tubing DOWNFLOW APPLICATIONSFig. 9 - Condensate Trap Condensate Trap Location355CAV Fig. 11 - Horizontal Left Tube ConfigurationHORIZONTAL LEFT SUPPLY-AIRDISCHARGE APPLICATIONS Pressure Switch Tubing355CAV Vent 2-PipeApplicationPROPERTY DAMAGE Pressure Switch TubingUNIT OPERATION HAZARD Fig. 14 - Horizontal Right Tube ConfigurationHORIZONTAL RIGHT SUPPLY-AIRDISCHARGE APPLICATIONS Construct a Working Platform355CAV LOCATIONCondenste Trap Field Drain Attachment Pressure Switch TubingFurnace Location Relative to Cooling Equipment Fig. 16 - Prohibit Installation on BackFIRE OR DEATH HAZARD Fig. 17 - Freeze ProtectionHazardous Locations INSTALLATIONInstallation in Upflow or Downflow Applications Installation in Horizontal Applications355CAV Fig. 22 - Duct FlangesCombustible Floor Installed on a Combustible Floor355CAV Supply Air Connections Upflow Furnaces AIR DUCTSGeneral Requirements Ductwork Acoustical TreatmentDownflow and Horizontal Furnaces Return Air ConnectionsFIRE HAZARD Upflow FurnacesFIRE OR EXPLOSION HAZARD Fig. 24 - Filter Installed for Side InletBottom Closure Panel Gas Piping355CAV Fig. 26 - Removing Bottom Closure PanelFig. 27 - Typical Gas Pipe Arrangement Fig. 28 - Casing Pipe Grommets355CAV 115-vWiringTable 3 - Maximum Capacity of Pipe ELECTRICAL SHOCK HAZARD355CAV Fig. 30 - Disconnect Switch and FurnaceTable 4 - Electrical Data ELECTRICAL SHOCK AND FIRE HAZARDAccessories Factory Installed J-BoxLocation24-vwiring Fig. 31 - Factory Installed J-BoxLocationVentilated Combustion Air Option Materials AIR FOR COMBUSTION AND VENTILATIONCombustion-Airand Vent Pipe Systems Direct Vent / 2-PipeSystemFITTINGS ASTMMATERIAL PIPE355CAV Fig. 33 - Furnace Control355CAV Fig. 34 - Direct Vent Termination ClearanceA06675 A05013 355CAVA05090 355CAVA05091 UNIT CORROSION HAZARD Location and Elbow ConfigurationCOMBUSTION AIR PIPE Fig. 38 - Combustion Air and Vent Pipe TransitionCARBON MONOXIDE POISONING HAZARD Fig. 40 - Intake Housing Plug Fitting Drain355CAV UNIT CORROSION HAZARD355CAV VENT PIPECARBON MONOXIDE POISONING AND Attachment of Vent PipeFig. 42 - Crawlspace Termination 304.8mm minimum76.2 mm minimum 304.8 mm minimum Fig. 41 - Attic Termination3” 76.2mm minimum Fig. 43 - Crawlspace Termination304.8mm minimum 355CAVGeneral VENT TERMINATIONExtended Exposed Sidewall Pipes 355CAV355CAV 5.Check required dimensions as shown355CAV Winter Design Temperature Ambient355CAV Table 7 - Maximum Allowable Pipe Length Ft / MUNIT SIZE DIAMETER OF COMBUSTION AIR CONDENSATE DRAINDIRECT VENT 2 PIPE TERMINATION TERMINATION SYSTEMContinuous Fan CF Setup Switches START-UP,ADJUSTMENT AND SAFETY CHECKStep 2 - Select Setup Switch Positions Air Conditioning A/C Setup SwitchesUNIT OPERATION HAZARD Fig. 48 - Example of Setup Switch in Off PositionPrime Condensate Trap with Water 355CAV355CAV Fig. 49 - Wiring DiagramA06677 355CAV Fig. 50 - Inducer Housing Drain TubeTable 9 - Furnace Setup Switch Description Fig. 51 - Filling Condensate TrapAdaptive Mode Step 3 - Sequence of OperationPurge Gas Lines Single-StageThermostat and Step-ModulatingHeatingHeating Two-StageThermostat and Two-StageMedium/High355CAV Thermidistat Mode Cooling Mode355CAV Heat Pump Super Dehumidify ModeContinuous Blower Mode Continuous Blower Speed Selection from Thermostat355CAV ConditioningConditioner Pump Dual Fuel355CAV PumpFurnace and Two-SpeedAir Conditioner Furnace and Two-SpeedHeat Pump355CAV Step 4 - AdjustmentsSet Gas Input Rate Fig. 60 - Redundant Automatic Gas Valve355CAV Fig. 61 - Burner OrificeUNIT DAMAGE HAZARD 355CAV Derated 2% / 1000 Ft. Above Sea LevelDerated 2% / 1000 Ft. Above Sea Level 355CAVUNIT DAMAGE HAZARD Table 11 - Altitude Derate Multiplier for U.S.AFig. 62 - Burner Flame 355CAV355CAV Set Temperature RiseTable 12 - Gas Rate cu Ft/Hr Set Thermostat Heat AnticipatorCheck Primary Limit Control CHECKLISTCheck Safety Controls Check Pressure Switches355CAV CHECKLIST - INSTALLATIONSafety Controls Check Operation CHECKLIST --- START---UP