Bryant 355MAV Ductwork Acoustical Treatment, Supply Air Connections, Return Air Connections

Page 21

COMBUSTION-AIR INTAKE

 

(NON-DIRECT VENT/1-PIPE

COMBUSTION-AIR PIPE

APPLICATION)

 

(DIRECT VENT/2-PIPE

 

APPLICATION,ALL SIZES)

3-IN. MINIMUM CLEARANCE TO COMBUSTION-AIR INTAKE IS REQUIRED (NON-DIRECT VENT/1-PIPE

APPLICATION,)

ANGLE

IRON OR

EQUIVALENT

 

(B)

 

 

(A)

 

(B)

 

 

(A) ROD LOCATION

 

 

USING DIMPLE

 

 

LOCATORS

3/8-IN. HEX NUT

(A)

(SEE DIMENSIONAL

DWG FOR

& WASHER (4)

 

LOCATIONS)

REQD PER ROD

 

VENT

3/8-IN. (10mm) ROD

5 3/4″ (146mm)

ALTERNATE SUPPORT

LOCATION 4-IN. (102mm) MIN

8-IN. (203mm) MAX

DRAIN

(A)

(B)

13/16-IN. (21mm) MAX

(B)ALTERNATE SUPPORT LOCATION FROM BACK

 

NOTES: 1. A 1 In. (25mm) clearance minimum between

(A) PREFERRED ROD LOCATION

top of furnace and combustible material.

(B) ALTERNATE ROD LOCATION

2. The entire length of furnace must be

 

supported when furnace is used in horizontal

 

position to ensure proper drainage.

 

3. For non-direct vent/1-pipe application,

 

bottom side combustion-air entry cannot be

 

used when furnace is installed with hangers

 

as shown.

A93304

Fig. 22—Crawlspace Horizontal Application

Maintain a 1-in. clearance from combustible materials to supply air ductwork for a distance of 36 in. horizontally from the furnace. See NFPA 90B or local code for further requirements.

B. Ductwork Acoustical Treatment

Metal duct systems that do not have a 90 degree elbow and 10 ft of main duct to the first branch take-off may require internal acoustical lining. As an alternative, fibrous ductwork may be used if constructed and installed in accordance with the latest edition of SMACNA construction standard on fibrous glass ducts. Both acoustical lining and fibrous ductwork shall comply with NFPA 90B as tested by UL Standard 181 for Class 1 Rigid air ducts.

C. Supply Air Connections

UPFLOW FURNACES

Connect supply-air duct to 3/4-in. flange on furnace supply-air outlet. The supply-air duct attachment must ONLY be connected to furnace supply-/outlet-air duct flanges or air conditioning coil casing (when used). DO NOT cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external to furnace main casing.

DOWNFLOW FURNACES

Connect supply-air duct to supply-air opening on furnace. The supply-air duct attachment must ONLY be connected to furnace supply/outlet or air conditioning coil casing (when used), when installed on non-combustible material. When installed on combustible material, supply-air duct attachment must ONLY be connected to an accessory subbase or factory approved air conditioning coil casing. DO NOT cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external to furnace main casing.

HORIZONTAL FURNACES

Connect supply-air duct to supply air opening on furnace. The supply-air duct attachment must ONLY be connected to furnace supply/outlet or air conditioning coil casing (when used). DO NOT cut main furnace casing to attach supply side air duct, humidifier, or other accessories. All accessories MUST be connected external to furnace main casing.

D. Return Air Connections

UPFLOW FURNACES

The return-air duct must be connected to bottom, sides (left or right), or a combination of bottom and side(s) of main furnace casing. Bypass humidifier may be attached into unused side return air portion of the furnace casing. DO NOT connect any portion of return-air duct to back of furnace casing.

DOWNFLOW AND HORIZONTAL FURNACES

The return-air duct must be connected to return-air opening provided. DO NOT cut into casing sides or back to attach any portion of return-air duct. Bypass humidifier connections should be made at ductwork or coil casing sides exterior to furnace.

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Contents Table of Contents Installation, Start-up, and Operating InstructionsLocation Safety Considerations IntroductionCodes and Standards Unit Size DimensionsClearances to Combustibles Installer Packet IncludesApplications Procedure 1-GENERAL Electrostatic Discharge ESD Precaution ProcedureProcedure 2-UPFLOW Applications Condensate Trap Location Factory-Shipped OrientationCondensate 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 3-FURNACE Location Relative to Coolingequipment Procedure 4-HAZARDOUS LocationsInstallation 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 DuctsDuctwork Acoustical Treatment Supply Air ConnectionsReturn Air Connections Procedure 6-BOTTOM Closure Panel Procedure 5-FILTER ArrangementProcedure 7-GAS Piping Filter InformationBottom Filter Arrangement Maximum Capacity of Pipe Nominal Length of Pipe FTInternal 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 Procedure 10-CONDENSATE Drain Multiventing and Vent TerminationsGeneral 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 ModeProcedure 11-ZONE Mode START-UP Procedures Procedure 1-GENERALProcedure 2-SELECT Setup Switch Positions Setup Switches SW Air Conditioning A/C Airflow Switch PositionAIR Setup Allowable Furnace Model Setup Switch Position TonsProcedure 3-PRIME Condensate Trap with Water Procedure 4-PURGE GAS LinesProcedure 5-ADJUSTMENTS Filling Condensate Trap Altitude AVG GAS Specific Gravity of Natural GAS Heat ValueAltitude 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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In conclusion, the Bryant 355MAV offers an impressive array of features, including a variable speed compressor, advanced control systems, sound reduction technology, and high energy efficiency. These characteristics make it an exceptional option for those seeking a reliable and efficient HVAC solution in their homes. With its commitment to comfort, savings, and sustainability, the Bryant 355MAV continues to be a popular choice among homeowners looking to enhance their indoor environments.
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