Bryant 355MAV instruction manual Attic Location and Working Platform

Page 13

COMBUSTION - AIR

INTAKE

VENT

5 3/4″ (146 mm)

A 12-IN. (305 mm) MIN HORIZONTAL PIPE SECTION IS RECOMMENDED WITH SHORT (5 TO 8 FT / 1.5 TO 2.4 M) VENT SYSTEMS TO REDUCE EXCESSIVE CONDENSATE DROPLETS FROM EXITING THE VENT PIPE.

30″ (762 mm)MIN

WORK AREA

MANUAL

 

SHUTOFF

ACCESS OPENING

GAS VALVE

FOR TRAP

SEDIMENT

DRAIN

TRAP

CONDENSATE

 

 

TRAP

NOTE: LOCAL CODES MAY REQUIRE A DRAIN PAN UNDER THE

FURNACE AND CONDENSATE TRAP WHEN A CONDENSING

FURNACE IS INSTALLED ABOVE FINISHED CEILINGS.

A93031

Fig. 10—Attic Location and Working Platform

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: Combustion-air and vent pipes are restricted to a minimum length of 5 ft. (See Table 6.)

NOTE: A 12-in. minimum offset pipe section is recommended 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.)

PROCEDURE 5—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.

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

NOTE: The auxiliary junction box (J-Box) MUST be relocated to opposite side of furnace casing. (See Fig. 11.) See Electrical Connection section for J-Box relocation.

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:

1.Remove 3 tubes connected to condensate trap.

2.Remove trap from blower shelf by gently pushing tabs inward and rotating trap

3.Install casing hole filler cap (factory-supplied in loose parts bag) into blower shelf hole where trap was removed.

4.Install casing hole filler cap into blower shelf hole where trap was removed.

5.Fill unused condensate trap casing holes with plastic filler caps (factory-supplied in loose parts bag).

B. Condensate Trap Tubing

NOTE: See Fig. 11 or tube routing label on main furnace door to check for proper connections.

1.Collector Box Drain Tube:

a. Remove factory-installed plug from LOWER collector box drain tube (blue and white striped label).

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Contents Table of Contents Installation, Start-up, and Operating InstructionsLocation Introduction Safety ConsiderationsCodes and Standards Unit Size DimensionsClearances to Combustibles Installer Packet IncludesApplications Procedure 1-GENERAL Electrostatic Discharge ESD Precaution ProcedureCondensate Trap Location Factory-Shipped Orientation Procedure 2-UPFLOW ApplicationsCondensate Trap Tubing Factory-Shipped Orientation Condensate Trap Tubing Alternate Upflow Orientation Condensate Trap Location Alternate Upflow OrientationProcedure 3-DOWNFLOW Applications Pressure Switch TubingCondensate Trap Field Drain Attachment Condensate Trap Freeze ProtectionCondensate Trap Tubing Downflow Tube Configuration Right-Hand Trap InstallationCondensate Trap Field Drain Attachment Construct a Working Platform Condensate Trap Field Drain AttachmentsAttic Location and Working Platform Horizontal Right Tube Configuration Furnace Location for Proper Condensate Drainage Location Procedure 1-GENERALProcedure 2-LOW-FIRE only Installation Prohibit Installation on BackProcedure 4-HAZARDOUS Locations Procedure 3-FURNACE Location Relative to CoolingequipmentInstallation Procedure 1-LEVELING Legs if Desired Furnace Plenum Opening Floor Opening Opening DimensionsProcedure 3-INSTALLATION in Horizontal Applications Floor and Plenum Opening DimensionsGeneral Requirements Procedure 4-AIR DuctsSupply Air Connections Ductwork Acoustical TreatmentReturn Air Connections Procedure 6-BOTTOM Closure Panel Procedure 5-FILTER ArrangementProcedure 7-GAS Piping Filter InformationBottom Filter Arrangement Nominal Length of Pipe FT Maximum Capacity of PipeInternal Pipe Diameter Size Wiring Procedure 8-ELECTRICAL ConnectionsElectrical Data AccessoriesRemoval of Existing Furnaces from Common Vent Systems Procedure 9-DIRECT VentingUnit Wiring Diagram Combustion-Air and Vent Piping Control Center355MAV Variable Speed Furnace Control Opening Location Clearance FTCombustion-Air and Vent Pipe Connections Short Vent 5 to 8 ft System Altitude FT Maximum Allowable Pipe Length ft4001 to 5000‡ Intake Housing Plug Fitting Drain Roof Termination Preferred Concentric Vent and Combustion-Air RoofTermination Preferred Sidewall Termination of Less than 12 Multiventing and Vent Terminations Procedure 10-CONDENSATE DrainGeneral Condensation Drain Protection ″ 25 mm Maximum TYP Sequence of Operation Example of Field Drain AttachmentProcedure 2-HEATING Mode Procedure 1-SELF-TEST ModeProcedure 3-HEATING MODE-TWO Stage Procedure 4-EMERGENCY Heat ModeProcedure 6-HEAT Pump Mode Procedure 5-COOLING ModeSingle-Speed Applications Two-Speed ApplicationsProcedure 8-COMPONENT Test Procedure 7-CONTINUOUS FAN ModeProcedure 10-DEHUMIDIFICATION Mode Procedure 9-BYPASS Humidifier ModeSTART-UP Procedures Procedure 1-GENERAL Procedure 11-ZONE ModeProcedure 2-SELECT Setup Switch Positions Setup Switches SW Air Conditioning A/C Airflow Switch PositionAIR Setup Allowable Furnace Model Setup Switch Position TonsProcedure 4-PURGE GAS Lines Procedure 3-PRIME Condensate Trap with WaterProcedure 5-ADJUSTMENTS Filling Condensate Trap Heat Value Altitude AVG GAS Specific Gravity of Natural GASAltitude United States Canada Redundant Automatic Gas Valve Set Temperature RiseSet Thermostat Heat Anticipator Altitude Derate Multiplier for U.S.AExample Altitude Percent Derate MultiplierCheck Pressure Switches Procedure 6-CHECK Safety ControlsGas Rate Cu Ft/Hr Check Primary Limit ControlAmp Draw Check with Ammeter Procedure 7-CHECKLISTCombustion and Vent Piping CHECKLIST-START-UP CHECKLIST-INSTALLATIONBook/Tab 1/6 Catalog No
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355MAV specifications

The Bryant 355MAV is a remarkable model that stands out in the HVAC (heating, ventilation, and air conditioning) industry for its efficiency, reliability, and advanced technology. This unit is specifically designed to provide homeowners with excellent comfort while maintaining energy efficiency, making it an ideal choice for residential applications.

One of the standout features of the Bryant 355MAV is its variable speed compressor. This technology allows the system to adjust its cooling output based on the current temperature needs of the home. By operating at multiple speed levels, the compressor can maintain a more consistent indoor climate while using significantly less energy than traditional single-speed systems. This capability translates to lower energy bills and enhanced comfort.

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