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Bryant 345MAV ÐRoof Termination Preferred, ÐSidewall Termination with Straight Pipe, Ð30Ð

Models: 345MAV

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Fig. 33ÐRoof Termination (Preferred)

ROOF

VENT

MAINTAIN 12-IN. MINIMUM Ð30Ð

CLEARANCE ABOVE HIGHEST

ANTICIPATED SNOW LEVEL. MAXIMUM OF 24 IN. ABOVE ROOF.

A96191

Fig. 33ÐRoof Termination (Preferred)

OVERHANG OR ROOF

12″ MINIMUM

VENT

90°

MAINTAIN 12-IN.

CLEARANCE

ABOVE HIGHEST

ANTICIPATED SNOW

LEVEL OR GRADE,

WHICHEVER IS

GREATER.

A96192

Fig. 34ÐSidewall Termination with 2 Elbows (Preferred)

OVERHANG OR ROOF

12″ MINIMUM

VENT

6-IN. MINIMUM CLEARANCE BETWEEN WALL AND END OF VENT PIPE.

10-IN. MAXIMUM PIPE LENGTH

MAINTAIN 12-IN.

CLEARANCE

ABOVE HIGHEST

ANTICIPATED SNOW

LEVEL OR GRADE,

WHICHEVER IS

GREATER.

A96210

Fig. 35ÐSidewall Termination with Straight Pipe

Ð30Ð

32°F MINIMUM INSTALLED AMBIENT OR FREEZE PROTECTION REQUIRED

A93058

CAUTION: Unit must not be installed, operated, and then turned off and left in an unoccupied structure during cold weather when temperature drops to 32°F and below unless drain trap and drain line have adequate freeze protection. See Service and Maintenance Instructions for winterizing procedure.

OPEN STAND

PIPE FOR

A/C OR

HUMIDIFIER

DRAIN

TEE

TO OPEN

DRAIN

A94054

Fig. 36ÐExample of Field Drain Attachment

Image 30

Bryant 345MAV ÐRoof Termination Preferred, ÐSidewall Termination with Straight Pipe, ÐExample of Field Drain Attachment

Contents

and operating instructions Fig. 1ÐMultipoise Orientationsinstallation, start-up 345MAVDIMENSIONS IN →Fig. 2ÐDimensional Drawing→Fig. 3ÐClearances to Combustibles SAFETY CONSIDERATIONSELECTROSTATIC DISCHARGE ESD PRECAUTIONS INSTALLATIONINTRODUCTION APPLICATIONS I.GENERALII.UPFLOW APPLICATIONS Fig. 4ÐCondensate Trap Fig. 6ÐAlternate Upflow Tube Configuration and Fig. 5ÐFactory-ShippedUpflow Tube ConfigurationShown With Blower Access Panel Removed F. Pressure Switch TubingFig. 8ÐDownflow Tube Configuration Fig. 7ÐDownflow Tube ConfigurationLeft-HandTrap Installation Right-HandTrap InstallationE. Condensate Trap Freeze Protection D.Pressure Switch TubingC.Condensate Trap Field Drain Attachment A.Condensate Trap LocationF.Construct a Working Platform Fig. 9ÐHorizontal Left Tube ConfigurationE.Condensate Trap Freeze Protection D.Pressure Switch TubingB.Condensate Trap Tubing D. Pressure Switch TubingFig. 10ÐAttic Location and Working Platform C.Condensate Trap Field Drain AttachmentÐ11Ð II.FURNACE LOCATION RELATIVE TO COOLING EQUIPMENT II.UNCONFINED SPACE III.HAZARDOUS LOCATIONSAIR FOR COMBUSTION AND VENTILATION I.GENERAL III.CONFINED SPACEVentilation from an Unconfined Space INSTALLATION I.LEVELING LEGS IF DESIREDFig. 12ÐConfined Space: Air for Combustion and Fig. 13ÐConfined Space: Air for Combustion andNon-GarageInstallation II.INSTALLATION ON A CONCRETE SLABOPENING DIMENSIONS IN Fig. 14ÐLeveling LegsFig. 17ÐDuct Flanges IV. INSTALLATION IN HORIZONTAL APPLICATIONSV.AIR DUCTS A.General Requirements B.Ductwork acoustical treatmentTABLE 1ÐFILTER INFORMATION D.Return Air ConnectionsVI. FILTER ARRANGEMENT VII. BOTTOM CLOSURE PANELVIII. GAS PIPING Fig. 20ÐFilter Installed for Side InletFig. 22ÐRemoving Bottom Closure Panel Fig. 21ÐBottom Filter ArrangementTABLE 2ÐMAXIMUM CAPACITY OF PIPE CU FT PER HR Fig. 23ÐTypical Gas Pipe ArrangementELECTRICAL CONNECTIONS J-BOXRELOCATION I.115-VWIRINGTABLE 3ÐELECTRICAL DATA Fig. 25ÐRelocating J-BoxFig. 26ÐWiring Diagram Ð21ÐVENTING II.24-VWIRINGIII.ACCESSORIES Fig. 27ÐControl CenterII.COMBUSTION-AIRAND VENT PIPING A.General B. Combustion Air PipeFig. 28ÐCombustion-Airand Vent Pipe Connections Elbow Configuration COMBUSTION-AIRINLET PIPE ASSEMBLY INFig. 29ÐCombustion-AirInlet Pipe Assembly Fig. 30ÐIntake Housing Plug Fitting DrainTABLE 4ÐMAXIMUM ALLOWABLE VENT PIPE LENGTH FT Ð25ÐÐ26Ð Fig. 32ÐShort Vent 5 to 8 Ft System Ð27ÐWINTER DESIGN TEMPERATURE AMBIENT IV. MULTIVENTING D.Extended Exposed Sidewall PipesIII.VENT TERMINATION CONDENSATE DRAIN I.GENERALFig. 36ÐExample of Field Drain Attachment Fig. 33ÐRoof Termination PreferredFig. 35ÐSidewall Termination with Straight Pipe Ð30ÐIII.CONTINUOUS BLOWER MODE I.HEATING MODEII.COOLING MODE IV. HEAT PUMP MODESTART-UPPROCEDURES I.GENERAL V.COMPONENT TEST A.Component Test SequenceII.PRIME CONDENSATE TRAP WITH WATER III.PURGE GAS LINES →Fig. 38ÐInducer Housing Drain TubeIV. ADJUSTMENTS A.Set Gas Input Rate → Fig. 39ÐFilling Condensate TrapÐ34Ð Continued Continued Ð36ÐFig. 41ÐBurner Flame Fig. 40ÐRedundant Automatic Gas ValveUNITED STATES TABLE 8ÐALTITUDE DERATE MULTIPLIER FOR U.S.ATABLE 9ÐGAS RATE CU FT/HR B.Set Temperature RiseC.Blower Off Delay Heat Mode TABLE 10±SPEED SELECTORCHECKLIST CHECK SAFETY CONTROLSII.CHECK PRESSURE SWITCH I.CHECK PRIMARY LIMIT CONTROLCHECKLISTÐINSTALLATION Ð40Ð