Bryant 340MAV instruction manual Multipoise Orientations

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AIRFLOW

UPFLOW

HORIZONTAL

LEFT

DOWNFLOW

AIRFLOW

HORIZONTAL

RIGHT

AIRFLOW

Understand these signal words DANGER, WARNING, CAU- TION, and NOTE. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which would result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

The 340MAV Multipoise Condensing Gas-Fired Furnaces are CSA (formerly AGA and CGA) design-certified for natural and propane gases (see furnace rating plate) and for installation in alcoves, attics, basements, closets, utility rooms, crawlspaces, and garages. The furnace is factory-shipped for use with natural gas. A CSA (formerly AGA and CGA) listed gas conversion kit is required to convert furnace for use with propane gas.

See Fig. 3 for required clearances to combustibles.

AIRFLOW

Fig. 1—Multipoise Orientations

A93041

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

WARNING: Improper installation, adjustment, alter- ation, service, maintenance, or use can cause carbon monoxide poisoning, explosion, fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency, local gas supplier, or your distributor or branch for information or assistance. The qualified installer or agency must use only factory-authorized and listed kits or accessories when modifying this product. Failure to follow this warning could result in electrical shock, fire, personal injury, or death.

Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified person- nel should install, repair, or service heating equipment. Untrained personnel can perform basic maintenance functions such as clean- ing and replacing air filters. All other operations must be per- formed by trained service personnel. When working on heating equipment, observe precautions in literature, on tags, and on labels attached to or shipped with unit and other safety precautions that may apply.

These instructions cover the minimum requirements and conform to existing national standards and safety codes. In some instances, these instructions exceed certain local codes and ordinances, especially those that may not have kept up with changing residen- tial construction practices. We require these instructions as a minimum for a safe installation.

Wear safety glasses and work gloves. Have a fire extinguisher available during start-up and adjustment procedures and service calls.

CAUTION: Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing and gloves when handling parts. Failure to follow this caution could result in personal injury.

Recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury.

These furnaces SHALL NOT be installed directly on carpeting, tile, or any other combustible material other than wood flooring. In downflow installations, factory accessory floor base MUST be used when installed on combustible materials and wood flooring. Special base is not required when this furnace is installed on manufacturer’s Coil Assembly Part No. CD5 or CK5, or when Coil Box Part No. KCAKC is used.

The 340MAV 040 through 120 size units are CSA (formerly AGA and CGA) design-certified for use in manufactured (mobile) homes when factory accessory conversion kit is used. The 140 size unit is NOT design-certified for use in manufactured (mobile) homes. These furnaces are suitable for installation in a structure built on site or a manufactured building completed at final site. The design of this furnace line is NOT CSA (formerly AGA and CGA) design-certified for installation in recreation vehicles or outdoors.

This furnace is designed for continuous return-air minimum temperature of 60°F db or intermittent operation down to 55°F db such as when used with a night setback thermostat. Return-air temperature must not exceed 85°F db. Failure to follow these return-air limits may affect reliability of heat exchangers, motors, and controls. (See Fig. 4.)

These furnaces are shipped with the drain and pressure tubes connected for UPFLOW applications. Minor modifications are required when used in DOWNFLOW, HORIZONTAL RIGHT, or HORIZONTAL LEFT (supply-air discharge direction) applica- tions as shown in Fig. 1. See details in Applications section.

This furnace must be installed with a direct-vent (combustion air and flue gas) system and a factory accessory termination kit. In a direct-vent system, all air for combustion is taken directly from the outdoor atmosphere and flue gases are discharged to the outdoor atmosphere. See furnace and factory accessory termination kit instructions for proper installation.

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Contents Electrostatic Discharge ESD Precautions Safety ConsiderationsMultipoise Orientations Dimensions Unit SizeVI. GAS Piping and GAS Pipe Pressure Testing SafetyII. General Installation Codes and StandardsElectrostatic Discharge ESD Precautions VII. Electrical ConnectionsGeneral IntroductionApplications II. Upflow ApplicationsCondensate Trap Location Alternate Upflow Orientation Pressure Switch TubingCondensate Trap Tubing Factory-Shipped Orientation Condensate Trap Tubing Alternate Upflow OrientationCondensate Trap Tubing III. Downflow ApplicationsCondensate Trap Location Horizontal Left Tube Configuration Horizontal Right SUPPLY-AIR Discharge Applications IV. Horizontal Left SUPPLY-AIR Discharge ApplicationsConstruct a Working Platform Attic Location and Working Platform Location Furnace Location for Proper Condensate Drainage II. Furnace Location Relative to Cooling EquipmentIII. Installation in Horizontal Applications II. Installation in Upflow or Downflow ApplicationsInstallation Leveling Legs if Desired III. Hazardous LocationsWidth Opening DimensionsFurnace Plenum Opening Floor Opening Casing Duct Flanges II. Ductwork Acoustical TreatmentFilter Arrangement III. Supply AIR ConnectionsIV. Return AIR Connections Filter InformationMaximum Capacity of Pipe VI. Bottom Closure PanelVII. GAS Piping Casings onlyFire or Explosion Hazard Electrical ConnectionsWiring III AccessoriesPCB Removal of Existing Furnaces from Common Vent Systems Electrical DataDirect Venting II. COMBUSTION-AIR and Vent PipingControl Center COMBUSTION-AIR and Vent Pipe Termination Clearances Clearance FTCombustion-Air and Vent Pipe Attachment Combustion-Air and Vent Pipe DiameterExample COMBUSTION-AIR Intake Housing Plug Fitting Short Vent 5 to 8 Ft SystemMaximum Allowable Pipe Length FT Altitude FT6001 to 7000‡ Air Intake Housing Plug Fitting Drain Two-Pipe Termination Kit Vent Extension PipeExtended Exposed Sidewall Pipes Concentric Vent/Air Termination Kit IV. Multiventing and Vent TerminationsRoof Termination Preferred Sidewall Termination of 12 in. or Less III. Condensate Drain Protection Condensate Drain GeneralII. Application III. Continuous Blower Mode Heating ModeII. Cooling Mode IV. Heat Pump ModeComponent Test START-UP Procedures GeneralIV. Adjustments II. Prime Condensate Trap with WaterInducer Housing Drain Cap BTU/CU FT Orifice Manifold 625 650 Only 7001 675 725 8000 775 750 15% 825 2001to 725 750 Only 4001 775 800 825 5000 875 850 900 925 United States Example 100,000 Btuh Input Furnace Installed AT 4300 FTAltitude Derate Multiplier CanadaGAS Rate CU FT/HR Blower OFF Delay Setup PositionCheck Safety Controls Speed SelectorCheck Primary Limit Control II. Check Pressure SwitchChecklist Load Calculation CHECKLIST-INSTALLATIONCHECKLIST-START-UP Combustion AIR Vent Piping
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