Bryant 345MAV Horizontal Right SUPPLY-AIR Discharge Applications, Construct a Working Platform

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C.Condensate Trap Field Drain Attachment

Refer to Condensate Drain section for recommendations and procedures.

D.Pressure Switch Tubing

The LOWER collector box pressure tube (pink label) is factory connected to the pressure switch for use when furnace is installed in UPFLOW applications. This tube MUST be disconnected, extended, rerouted, and then reconnected to the pressure switch in HORIZONTAL LEFT applications.

NOTE: See Fig. 9 or tube routing label on main furnace door to check for proper connections.

Modify tube as described below.

1.Disconnect collector box pressure tube (pink label) attached to pressure switch.

2.Use smaller diameter tube (factory-supplied in loose parts bag) to extend tube disconnected in item 1.

3.Route extended tube:

a.Behind inducer housing.

b.Between blower shelf and inducer housing.

c.Behind inducer motor bracket.

d.Between inducer motor and pressure switch.

CAUTION: The condensate trap MUST be installed below furnace. See Fig. 4 for dimensions. The drain connection to condensate trap must also be properly sloped to an open drain.

NOTE: Vent pipe length is restricted to a minimum of 5 ft. (See Table 4.)

NOTE: A 12-in. minimum horizontal pipe section is recom- mended with short (5 to 8 ft) vent systems. This recommendation is to reduce excessive condensate droplets from exiting the vent pipe. (See Fig. 10 or 32.)

V.HORIZONTAL RIGHT (SUPPLY-AIR DISCHARGE) APPLICATIONS

A horizontal right furnace application is where furnace blower is located to the left of combustion and controls section of furnace, and conditioned air is discharged to the right.

CAUTION: Local codes may require a drain pan under entire furnace and condensate trap when a condensing furnace is used in attic application or over a finished ceiling.

4.Determine appropriate length, cut, and reconnect tube to pressure switch connection labeled COLLECTOR BOX.

E.Condensate Trap Freeze Protection

Refer to Condensate Drain Protection section for recommenda- tions and procedures.

F.Construct a Working Platform

Construct working platform where all required furnace clearances are met. (See Fig. 3 and 10.)

NOTE: In Canada, installations shall be in accordance with current NSCNGPIC Installation Codes and/or local codes.

A.Condensate Trap Location

The condensate trap must be removed from the factory-installed blower shelf location and relocated in selected application location as shown in Fig. 2 or 11.

To relocate condensate trap from the blower shelf to desired location, perform the following:

PLUG

 

 

CAP

AUXILIARY "J" BOX

COLLECTOR BOX

RELOCATED HERE

DRAIN TUBE

 

(BLUE AND WHITE STRIPED)

CONDENSATE

COLLECTOR BOX

TRAP

TUBE (GREEN)

 

COLLECTOR

INDUCER HOUSING

DRAIN TUBE (VIOLET)

BOX EXTENSION

COLLECTOR BOX

DRAIN TUBE

 

DRAIN TUBE (BLUE)

COLLECTOR BOX

EXTENSION TUBE

DRAIN TUBE COUPLING

COLLECTOR BOX TUBE (PINK) RELOCATE TUBE BETWEEN BLOWER SHELF AND INDUCER HOUSING FOR 040, 060, AND 080 HEATING INPUT FURNACES

A93302

Fig. 9ÐHorizontal Left Tube Configuration

Ð9Ð

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Contents Ð1Ð Electrostatic Discharge ESD Precautions→ ÐDimensional Drawing DimensionsÐ2Ð Unit SizeElectrostatic Discharge ESD Precautions Safety ConsiderationsMinimum Inches Clearance to Combustible Construction → ÐClearances to CombustiblesApplications General IntroductionII. Upflow Applications Condensate Trap Location Factory-Shipped OrientationCondensate Trap Location Alternate Upflow Orientation Ð5ÐPressure Switch Tubing Ð6ÐCondensate Trap Field Drain Attachment III. Downflow Applications Condensate Trap Freeze ProtectionCondensate Trap Location Condensate Trap TubingÐ8Ð IV. Horizontal Left SUPPLY-AIR Discharge ApplicationsHorizontal Right SUPPLY-AIR Discharge Applications Construct a Working PlatformÐ9Ð ÐAttic Location and Working Platform Front Upflow or Downflow Horizontal II. Furnace Location Relative to Cooling Equipment AIR for Combustion and Ventilation General III. Hazardous LocationsII. Unconfined Space III. Confined SpaceInstallation Leveling Legs if Desired Combustion AIR from Outdoors Through Vertical DuctsCombustion AIR from Outdoors Through Horizontal Ducts II. Installation on a Concrete Slab Opening DimensionsFurnace Casing Width AIR Ducts IV. Installation in Horizontal ApplicationsGeneral Requirements Ductwork acoustical treatmentVI. Filter Arrangement Return Air ConnectionsÐfilter Information VII. Bottom Closure Panel171⁄2-IN. Wide Casings only VIII. GAS PipingÐmaximum Capacity of Pipe CU FT PER HR Electrical ConnectionsNominal Length of Pipe FT Iron Internal Diameter Size Length FT³ CKT BKR Amps Phase WiringÐelectrical Data Amps SizeÐWiring Diagram III. Accessories II -V WiringVenting Removal of Existing Furnaces from Common Vent SystemsII. COMBUSTION-AIR and Vent Piping GeneralCombustion Air Pipe ÐCombustion-Air Inlet Pipe Assembly Ðmaximum Allowable Vent Pipe Length FT 3001 to4001 to 5000² 5001 to 6000² Ðmaximum Allowable Vent Pipe Length FT6001 to 7000² 7001 to 8000²9001 to 10,000² ÐShort Vent 5 to 8 Ft System040 060 080 100 120 Vent Extension PipeIV. Multiventing III. Vent TerminationCondensate Drain General Ðvent Pipe Termination ClearancesÐRoof Termination Preferred II. Cooling Mode Heating ModeIII. Continuous Blower Mode IV. Heat Pump ModeComponent Test START-UP Procedures GeneralComponent Test Sequence II. Prime Condensate Trap with WaterIV. Adjustments → ÐInducer Housing Drain TubeIII. Purge GAS Lines Set Gas Input RateAltitude BTU/CU FT4001 Only5000 Only 5001775 70018000 Only 8001Ðaltitude Derate Multiplier for U.S.A ExampleAltitude Derate Multiplier Factor for U.S.A Blower Off Delay Heat Mode Set Temperature RiseÐgas Rate CU FT/HR ±SPEED SelectorCheck Safety Controls Check Primary Limit Control II. Check Pressure SwitchChecklist CHECKLISTÐSTART-UP ChecklistðinstallationLoad Calculation Vent Piping
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345MAV specifications

The Bryant 345MAV is a premier choice in the realm of residential heating and cooling systems, encapsulating advanced technologies, high efficiency, and remarkable performance. Designed for homeowners seeking reliability and comfort, this model exemplifies modern HVAC (Heating, Ventilation, and Air Conditioning) innovations.

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