Bryant 355MAV instruction manual Procedure 3-FURNACE Location Relative to Coolingequipment

Page 17

CAUTION: The furnace can operate in the high-fire mode when certain fault conditions occur. The following precautions should be taken:

1.Size gas piping based on the high-fire input.

2.Check the high-fire input and adjust it per the main literature instructions. NEVER assume the high-fire input rate is not important for low-fire-only installation.

PROCEDURE 3—FURNACE LOCATION RELATIVE TO COOLINGEQUIPMENT

The cooling coil must be installed parallel with or on downstream side of furnace to avoid condensation in heat exchanger. When installed parallel with a furnace, dampers or other means used to control flow of air must prevent chilled air from entering furnace. If dampers are manually operated, they must be equipped with a means to prevent operation of either unit unless the damper is in full-heat or full-cool position.

PROCEDURE 4—HAZARDOUS LOCATIONS

18-IN. (457.2 mm)

MINIMUM TO BURNERS

A93044

Fig. 16—Installation in a Garage

WARNING: When the furnace is installed in a residential garage, the burners and ignition sources must be located at least 18 in. above the floor. The furnace must be located or protected to avoid physical damage by vehicles. When the furnace is installed in a public garage, airplane hangar, or other building having a hazardous atmosphere, the furnace must be installed in accordance with the National Fire Protection Association, Inc. requirements. (See Fig. 16.)

INSTALLATION

PROCEDURE 1—LEVELING LEGS (IF DESIRED)

When furnace is used in upflow position with side inlet(s), leveling legs may be desired. (See Fig. 17.) Install field-supplied, corrosion-resistant 5/16-in. machine bolts and nuts.

NOTE: The maximum length of bolt should not exceed 1-1/2 in.

1.Position furnace on its back. Locate and drill a 5/16-in. diameter hole in each bottom corner of furnace. (See Fig. 17.) Holes in bottom closure panel may be used as guide locations.

2.For each hole, install nut on bolt and then install bolt and nut in hole. (Install flat washer if desired.)

3.Install another nut on other side of furnace base. (Install flat washer if desired.)

4.Adjust outside nut to provide desired height, and tighten inside nut to secure arrangement.

NOTE: Bottom closure must be used when leveling legs are used. See Bottom Closure Panel section.

PROCEDURE 2—INSTALLATION IN UPFLOW AND DOWNFLOW APPLICATIONS

NOTE: For downflow applications, this furnace is approved for use on combustible flooring when special base (available from manufacturer) Part No. KGASB0201 ALL is used. Special base is not required when this furnace is installed on manufacturer’s Coil Assembly Part No. CD5 or CK5, or Coil Box Part No. KCAKC is used.

1.Determine application being installed from Table 1.

2.Construct hole in floor per dimensions specified in Table 1 and Fig. 18.

3.Construct plenum to dimensions specified in Table 1 and Fig. 18.

4.If downflow subbase (KGASB) is used, install as shown in Fig. 19. If Coil Assembly Part No. CD5 or CK5 or Coil Box Part No. KCAKC is used, install as shown in Fig. 20.

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Contents Table of Contents Installation, Start-up, and Operating InstructionsLocation Codes and Standards Safety ConsiderationsIntroduction Unit Size DimensionsClearances to Combustibles Installer Packet IncludesApplications Procedure 1-GENERAL Electrostatic Discharge ESD Precaution ProcedureCondensate Trap Tubing Factory-Shipped Orientation Procedure 2-UPFLOW ApplicationsCondensate Trap Location 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 BackInstallation Procedure 1-LEVELING Legs if Desired Procedure 3-FURNACE Location Relative to CoolingequipmentProcedure 4-HAZARDOUS Locations Furnace Plenum Opening Floor Opening Opening DimensionsProcedure 3-INSTALLATION in Horizontal Applications Floor and Plenum Opening DimensionsGeneral Requirements Procedure 4-AIR DuctsReturn Air Connections Ductwork Acoustical TreatmentSupply Air Connections Procedure 6-BOTTOM Closure Panel Procedure 5-FILTER ArrangementProcedure 7-GAS Piping Filter InformationBottom Filter Arrangement Internal Pipe Diameter Size Maximum Capacity of PipeNominal Length of Pipe FT 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 General Procedure 10-CONDENSATE DrainMultiventing and Vent Terminations 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 2-SELECT Setup Switch Positions Procedure 11-ZONE ModeSTART-UP Procedures Procedure 1-GENERAL Setup Switches SW Air Conditioning A/C Airflow Switch PositionAIR Setup Allowable Furnace Model Setup Switch Position TonsProcedure 5-ADJUSTMENTS Procedure 3-PRIME Condensate Trap with WaterProcedure 4-PURGE GAS Lines Filling Condensate Trap Altitude Altitude AVG GAS Specific Gravity of Natural GASHeat Value 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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