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Bryant 355CAV installation instructions Winter Design Temperature Ambient

Models: 355CAV

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Table 6 – Maximum Allowable Exposed Vent Pipe Length (Ft / M) with Insulation in

Winter Design Temperature Ambient*

UNIT SIZE	WINTER DESIGN	MAXIMUM PIPE			INSULATION THICKNESS†
UNIT SIZE	TEMPERATURE	DIAMETER (IN.)		0	3/8	1/2	3/4	1
	TEMPERATURE	DIAMETER (IN.)		0	3/8	1/2	3/4	1
042060	20_F / -6.7_C	2	30	/ 9.1	55 / 16.8	61 / 18.6	70 / 21.3	70 / 21.3
042060	0_F / -17.8_C	2	16	/ 4.9	33 / 10.1	38 / 11.6	46 / 14.0	53 / 16.2
	-20_F / -28.9_C	2	9 / 2.7		23 / 7.0	26 / 7.9	33 / 10.1	38 / 11.6
042080	20_F / -6.7_C	2	37 / 11.2		65 / 19.8	70 / 21.4	70 / 21.3	70 / 21.3
042080	0_F / -17.8_C	2	20	/ 6.1	39 / 11.9	45 / 13.7	55 / 16.8	63 / 19.2
060080	0_F / -17.8_C	2	20	/ 6.1	39 / 11.9	45 / 13.7	55 / 16.8	63 / 19.2
060080	-20_F / -28.9_C	2	11	/ 3.4	27 / 8.3	31 / 9.4	39 / 11.9	45 / 13.7
	-20_F / -28.9_C	2	11	/ 3.4	27 / 8.3	31 / 9.4	39 / 11.9	45 / 13.7
060100	20_F / -6.7_C	2-1/2	41 / 12.5		70 / 21.3	70 / 21.3	70 / 21.3	70 / 21.3
060100	0_F / -17.8_C	2-1/2	21	/ 6.4	42 / 12.8	48 / 14.6	59 / 18.0	68 / 20.7
	-20_F / -28.9_C	2-1/2	11	/ 3.4	28 / 8.5	33 / 10.1	41 / 12.5	49 / 14.9
060120	20_F / -6.7_C	3	49 / 14.9		70 / 21.3	70 / 21.3	70 / 21.3	70 / 21.3
060120	0_F / -17.8_C	3	26	/ 7.9	51 / 15.5	58 / 17.7	70 / 21.3	70 /21.3
	-20_F / -28.9_C	3	15	/ 4.6	35 / 10.7	40 / 12.2	50 / 15.2	59 / 18.0
* Pipe length (ft/m)	specified for maximum pipe	lengths located in unconditioned	spaces. Pipes		located in unconditioned space cannot exceed total allowable
pipe length as specified in Table ?.
†Insulation thickness based on R value of 3.5 per in.										355CAV
										355CAV

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Bryant 355CAV installation instructions Winter Design Temperature Ambient

Contents

Installation Instructions TABLE OF CONTENTSFig. 1 - Furnace Orientation FURNACE RELIABILITY HAZARDRequired Notice for Massachusetts Installations FURNACE RELIABILITY HAZARD SAFETY CONSIDERATIONS355CAV CUT HAZARDDimensions In. / mm Fig. 2 - Dimensional Drawing355CAV Fig. 3 - Clearances to Combustibles INSTALLATION355CAV Gas Piping and Gas Pipe Pressure Testing Fig. 5 - Installation in a GarageSafety General InstallationUPFLOW 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 ControlFig. 34 - Direct Vent Termination Clearance 355CAVA06675 A05013 355CAV355CAV A05090A05091 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 355CAVFig. 49 - Wiring Diagram 355CAVA06677 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-ModulatingHeatingTwo-StageThermostat and Two-StageMedium/High Heating355CAV Cooling Mode Thermidistat 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 ValveFig. 61 - Burner Orifice 355CAVUNIT 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 Table 12 - Gas Rate cu Ft/HrSet Temperature Rise Set Thermostat Heat AnticipatorCheck Primary Limit Control CHECKLISTCheck Safety Controls Check Pressure Switches355CAV CHECKLIST - INSTALLATIONSafety Controls Check Operation CHECKLIST --- START---UP