Manuals / Bryant / Household Appliance / Furnace

Bryant 340MAV RoofTermination Preferred, ConcentricVent and Combustion-AirRoof, 24 IN. ABOVE ROOF

Models: 340MAV

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Fig. 36—Roof Termination (Preferred)

ROOF ″ 18 MAXIMUM

BRACKET

COUPLING

VERTICAL SEPARATION

BETWEEN COMBUSTIONVENT AIR AND VENT

8 3/4″ FOR 3″ KIT

6 3/4″ FOR 2″ KIT

MAINTAIN 12 IN. MINIMUM

CLEARANCE ABOVE HIGHEST

ANTICIPATED SNOW LEVEL.

MAXIMUM OF 24 IN. ABOVE ROOF.

Fig. 36—Roof Termination (Preferred)

VENT

COMBUSTION

AIR

A87224

OVERHANG OR ROOF

12″ MINIMUM

1″ MAXIMUM

COMBUSTION-AIR

VENT

MAINTAIN 12 IN. (18 IN. FOR CANADA) MINIMUM CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL. MAXIMUM OF

24 IN. ABOVE ROOF.

COMBUSTION AIR

A93054

MAINTAIN 12 IN.

CLEARANCE ABOVE HIGHEST ANTICIPATED SNOW LEVEL OR GRADE, WHICHEVER IS GREATER.

A93055

Fig. 37—Concentric Vent and Combustion-Air Roof

Termination (Preferred)

OVERHANG OR ROOF

12″ MINIMUM

VENT

90°

BRACKET

12 IN. SEPARATION BETWEEN BOTTOM OF COMBUSTION AIR AND BOTTOM OF VENT

MAINTAIN 12 IN.

CLEARANCE

ABOVE HIGHEST

ANTICIPATED SNOW

LEVEL OR GRADE,

COMBUSTION-AIR WHICHEVER IS

GREATER.

A87225

Fig. 38—Concentric Vent and Combustion-Air Side

Termination

OVERHANG OR ROOF

12″ MINIMUM

VENT

90°

BRACKET

COUPLING

	12 IN. SEPARATION
	BETWEEN BOTTOM OF
	COMBUSTION AIR AND
	BOTTOM OF VENT
	MAINTAIN 12 IN.
	CLEARANCE
	ABOVE HIGHEST
	ANTICIPATED SNOW
COMBUSTION-AIR	LEVEL OR GRADE,
(ELBOW PARALLEL	WHICHEVER IS
TO WALL)	GREATER.
	A87226

Fig. 39—Sidewall Termination of 12 in. or More

Fig. 40—Sidewall Termination of Less than 12 in.

—32—

Image 32

Bryant 340MAV RoofTermination Preferred, ConcentricVent and Combustion-AirRoof, ConcentricVent and Combustion-AirSide

Contents

SAFETY CONSIDERATIONS installation, start-up and operating instructions340MAV Series J 4-WAYMULTIPOISEFig. 1-MultipoiseOrientations DIMENSIONS IN Fig. 2-DimensionalDrawingI. SAFETY II. GENERAL INSTALLATIONVI. GAS PIPING AND GAS PIPE PRESSURE TESTING CODES AND STANDARDSFig. 4-Return-AirTemperature ELECTROSTATIC DISCHARGE ESD PRECAUTIONSFig. 5-CondensateTrap VII. ELECTRICAL CONNECTIONSFig. 6-Factory-ShippedUpflow Tube Configuration Shown With Blower Access Panel RemovedFig. 7-AlternateUpflow Tube Configuration and INTRODUCTIONF. Pressure Switch Tubing E. Condensate Trap Field Drain AttachmentFig. 8-DownflowTube Configuration Left-HandTrap InstallationFig. 9-DownflowTube Configuration Right-HandTrap InstallationFig. 10-HorizontalLeft Tube Configuration D. Pressure Switch TubingC.Condensate Trap Field Drain Attachment E. Condensate Trap Freeze ProtectionC. Condensate Trap Field Drain Attachment E.Condensate Trap Freeze ProtectionF. Construct a Working Platform D. Pressure Switch TubingFig. 12-HorizontalRight Tube Configuration Fig. 11-AtticLocation and Working PlatformCondensate Trap Location Condensate Trap TubingLOCATION D. Pressure Switch TubingFig. 14-ProhibitInstallation on Back Fig. 13-FurnaceLocation for Proper CondensateDrainage Fig. 15-FreezeProtectionFig. 16-Installationin a Garage INSTALLATIONIII. INSTALLATION IN HORIZONTAL APPLICATIONS III. HAZARDOUS LOCATIONSFig. 18-Floorand Plenum Opening Dimensions Assembly or Coil Box InstalledInstalled on a Combustible Floor TABLE 1-OPENINGDIMENSIONS INFig. 22-CrawlspaceHorizontal Application Fig. 21-DuctFlangesII. DUCTWORK ACOUSTICAL TREATMENT Fig. 23-FilterInstalled for Side Inlet III. SUPPLY AIR CONNECTIONS A. Upflow FurnacesB.Downflow Furnaces C.Horizontal FurnacesFig. 25-RemovingBottom Closure Panel Fig. 24-BottomFilter ArrangementVI. BOTTOM CLOSURE PANEL VII. GAS PIPINGELECTRICAL CONNECTIONS Fig. 26-TypicalGas Pipe ArrangementI. 115-VWIRING 24-VWIRINGACCESSORIES Fig. 29-Relocating J-BoxFig. 30-WiringDiagram TABLE 4-ELECTRICALDATA DIRECT VENTINGWARNING CARBON MONOXIDE POISONING HAZARD II. COMBUSTION-AIRAND VENT PIPING A.GeneralFig. 31-ControlCenter Transition Location and Elbow Configuration TABLE 5-COMBUSTION-AIRAND VENT PIPETERMINATION CLEARANCES Fig. 32-Combustion-Airand Vent Pipe DiameterC. Combustion-Airand Vent Pipe Attachment Fig. 33-Combustion-Airand Vent Pipe ConnectionsB.Combustion-Airand Vent Pipe Diameter Fig. 34-ShortVent 5 to 8 Ft System TABLE 7-MAXIMUMALLOWABLE PIPE LENGTH FT TABLE 7-MAXIMUMALLOWABLE PIPE LENGTH FT CONTINUED Fig. 35-AirIntake Housing Plug Fitting Drain TABLE 7-MAXIMUMALLOWABLE PIPE LENGTH FT CONTINUEDA. Extended Exposed Sidewall Pipes B.Two-PipeTermination KitIV. MULTIVENTING AND VENT TERMINATIONS DESIGN TEMPERATURE AMBIENTC.Concentric Vent/Air Termination Kit Fig. 36-RoofTermination Preferred Fig. 37-ConcentricVent and Combustion-AirRoofTermination Preferred Fig. 38-ConcentricVent and Combustion-AirSideFig. 42-ConcentricVent and Combustion-Air Roof TerminationFig. 43-ConcentricVent and Combustion-Air Side TerminationCONDENSATE DRAIN I. GENERAL II. APPLICATIONFig. 46-Exampleof Field Drain Attachment III. CONDENSATE DRAIN PROTECTIONSEQUENCE OF OPERATION I. HEATING MODEII.COOLING MODE III. CONTINUOUS BLOWER MODESTART-UPPROCEDURES I.GENERAL IV. ADJUSTMENTS A. Set Gas Input RateV. COMPONENT TEST II.PRIME CONDENSATE TRAP WITH WATERFig. 48-InducerHousing Drain Cap Fig. 50-RedundantAutomatic Gas ValveFig. 49-FillingCondensate Trap Fig. 51-BurnerOrificeFOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLY Continued FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLYContinued FOR USE WITH 040 THROUGH 120 SIZE FURNACES ONLYFOR USE WITH 140 SIZE FURNACES ONLY Continued FOR USE WITH 140 SIZE FURNACES ONLYFig. 52-BurnerFlame TABLE 11-ALTITUDEDERATE MULTIPLIERB. Set Temperature Rise TABLE 14-BLOWEROFF DELAY SETUP POSITIONC.Blower Off Delay Heat Mode CHECK SAFETY CONTROLSII. CHECK PRESSURE SWITCH CHECKLISTFig. 53-AmpDraw Check with Ammeter I. CHECK PRIMARY LIMIT CONTROLCHECKLIST—INSTALLATION Page 340m4011 Catalog No