Bryant 312AAV/JAV instruction manual START-UP, ADJUSTMENT, and Safety Check, General, Burn Hazard

Page 33

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing furnaces.

NOTE: Vent connector length for connector sizing starts at furnace vent elbow. The 4-in. (102 mm) vent elbow is shipped for upflow configuration and may be rotated for other positions. Remove the 3 screws that secure vent elbow to furnace, rotate furnace vent elbow to position desired, re-install screws. The factory-supplied vent elbow does NOT count as part of the number of vent connector elbows.

The vent connector can exit the furnace through one of 5 locations on the casing.

1.Attach the single wall vent connector to the furnace vent elbow, and fasten the vent connector to the vent elbow with at least two field-supplied, corrosion-resistant, sheet metal screws located 180_ apart.

NOTE: An accessory flue extension is available to extend from the furnace elbow to outside the furnace casing. See Table 18 for accessory listing. If flue extension is used, fasten the flue extension to the vent elbow with at least two field-supplied, corrosion-resistant, sheet metal screws located 180_ apart. Fasten the vent connector to the flue extension with at least two field-supplied, corrosion resistant sheet metal screws located 180_ apart.

2.Vent the furnace with the appropriate connector as shown in Fig. 35-47.

3.Determine the correct location of the knockout to be re- moved.

4.Use a hammer and screwdriver to strike a sharp blow between the tie points and work the slug back and forth until the slug breaks free.

!CAUTION

BURN HAZARD

Failure to follow this caution may cause personal injury.

Hot vent pipe is within reach of small children when installed in downflow position.

See the following instruction.

An accessory Vent Guard Kit, is REQUIRED for downflow applications where the vent exits through the lower portion of the furnace casing. (See Fig. 39.) Refer to the Vent Guard Kit Instructions for complete details and see Table 18 for accessory listing.

The horizontal portion of the venting system shall slope upwards not less than 1/4-in. per linear ft. (6 mm/.3 M) from the furnace to the vent and shall be rigidly supported every 5 ft. (1.5 M) or

less with metal hangers or straps to ensure there is no movement after installation.

SIDEWALL VENTING

This furnace is not approved for direct sidewall horizontal venting.

In the U.S.: Per section 12.4.3 of the NFPA 54 / ANSI Z223.1-2009, any listed mechanical venter may be used, when approved by the authority having jurisdiction.

Select the listed mechanical venter to match the Btuh input of the furnace being vented. Follow all manufacturer’s installation requirements for venting and termination included with the listed mechanical venter.

START-UP, ADJUSTMENT, AND SAFETY

CHECK

Step 1 — General

!WARNING

FIRE HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

This furnace is equipped with manual reset limit switches in the gas control area. The switches open and shut off power to the gas valve if a flame roll-out or overheating condition occurs in the gas control area. DO NOT bypass the switches. Correct problem before resetting the switches.

1.Maintain 115-v wiring and ground. Improper polarity will result in rapid flashing LED and no furnace operation.

2.Make thermostat wire connections at the 24-v terminal block on the furnace control. Failure to make proper con- nections will result in improper operation. (See Fig. 33.)

3.Gas supply pressure to the furnace must be greater than 4.5-In. W.C. (0.16 psig ) but not exceed 14-In. W.C. (0.5 psig).

!CAUTION

CUT HAZARD

Failure to follow this caution may result in personal injury.

Sheet metal parts may have sharp edges or burrs. Use care and wear appropriate protective clothing, safety glasses and gloves when handling parts and servicing furnaces.

4.Check all manual-reset switches for continuity.

5.Install blower compartment door. Door must be in place to operate furnace.

6.Setup switch descriptions The 2 stage furnace has DIP switches used to select thermostat staging and blower off delay timings. For switch locations on Furnace control board, See Fig. 33 and 52.

7.Setup switch descriptions - See Table 10.

312AAV

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Contents Service and Maintenance Procedures 312AAV Introduction Safety ConsiderationsFurnace Reliability Hazard CUT HazardClearances to Combustibles Codes and Standards Electrostatic Discharge ESD Precautions ProcedureLocation GeneralCarbon Monoxide Poisoning and Unit Damage Hazard FIRE, Injury or Death Hazard AIR for Combustion VentilationFire Hazard Property Damage HazardFurnace Corrosion Hazard Carbon Monoxide Poisoning HazardOutdoor Combustion Air Method Air for Combustion, Ventilation, and Dilution for Outdoors Upflow Installation InstallationHorizontal Installation Downflow InstallationFIRE, EXPLOSION, and Carbon Monoxide Poisoning Hazard Suspended Furnace SupportRoll-Out Protection Platform Furnace SupportDuct Flanges Opening dimensions In. mmHorizontal Unit Suspension AIR Ducts Filter Arrangement Carbon Monoxide Poisoning HazardGeneral Requirements Ductwork Acoustical Treatment Supply Air ConnectionsAir Delivery CFM With Filter FurnaceSpeed External Static Pressure IN. W.C Size Inlet Downflow Furnaces Air Delivery CFM With Filter*Return Air Connections GAS Piping Fire or Explosion HazardUpflow Return Air Configurations and Restrictions Furnace Damage Hazard Maximum Capacity of PipeElectrical Shock and Fire Hazard WiringElectrical Connections Electrical Shock Hazard Furnace MAY not Operate HazardBOX Relocation Electrical DataElectrical Connection to J-BOX Electrical Box on Furnace Casing Side. See FigBX. Cable Installation in Furnace J-BOX Power Cord Installation in Furnace J-BOXTwo-Stage Furnace with Two-Speed Air Conditioner For Figures Venting AccessoriesMasonry Chimney Requirements General Venting RequirementsChimney Inspection Chart Appliance Application Requirements Internal Area of ChimneyVent Height Additional Venting Requirements Upflow Application-Vent Elbow UpDownflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Venting Notes for Furnace VentDiameter Vent Height Orientation INPUTBTUH/HR START-UP, ADJUSTMENT, and Safety Check GeneralBurn Hazard Adjustments Start-Up ProceduresStage Furnace Setup Switch Description Fire and Explosion HazardRedundant Automatic Gas Control Valve Altitude Derate Multiplier for U.S.AOrifice Hole Gas Rate cu ft. /hr Furnace Overheating HazardSeconds Size of Test Dial For Revolution Color Speed AS Shipped Speed SelectionChecklist Check Safety ControlsStage Furnace Blower OFF delay Setup Switch Desired Heating Mode Setup Switch Blower OFF Delay SECA10184 A10184A A10185 A10185A Introduction Service and Maintenance ProceduresCarbon Monoxide Poisoning and Fire Hazard Care and MaintenanceWiring Diagram Cleaning AND/OR Replacing AIR Filter Filter Size Information In. / MmBlower Motor and Wheel Electrical Shock Hazard Igniter Position-Side View Cleaning Heat ExchangerIgniter Position-Top View Sequence of Operation312AAV Single-Stage Thermostat and Two-Speed Cooling Adaptive Mode Thermidistat ModeSingle-Speed Cooling Wiring Diagrams TroubleshootingContinuous Blower Mode Troubleshooting Guide 2-Speed KitAdapter Chimneyin Usedswitch Shutoffvent Blocked Description Part Number Accessory ListParts Replacement Information Guide

312AAV/JAV specifications

The Bryant 312AAV/JAV is a prominent member of Bryant's series of high-efficiency air conditioning units, known for its reliability and advanced technology. Designed for residential and light commercial applications, this model combines exceptional performance with energy-efficient operation, making it a favorite among homeowners and builders alike.

One of the standout features of the 312AAV/JAV is its high SEER (Seasonal Energy Efficiency Ratio) rating, which allows users to enjoy significant savings on their energy bills. With a focus on energy efficiency, this unit minimizes electricity consumption while providing effective cooling throughout the hottest months. Its two-stage compressor technology not only enhances energy savings but also ensures consistent comfort by adjusting its operation to match the specific cooling needs of the space.

The Bryant 312AAV/JAV is equipped with Wi-Fi connectivity capabilities, allowing homeowners to control their cooling system remotely through a smartphone app. This feature adds a layer of convenience, enabling users to adjust settings, receive alerts, and track energy usage for optimal management of their home environment. Additionally, the unit’s compatibility with Smart Thermostats enhances its efficiency, facilitating further integration into a modern smart home setup.

Built for durability, the Bryant 312AAV/JAV features a robust construction that includes a galvanized steel cabinet designed to withstand harsh weather conditions. The rust-resistant finish not only prolongs the life of the unit but also ensures it maintains a sleek, attractive appearance. Quiet operation is another hallmark of this model; it operates at a low noise level, providing comfort without disruptive sound.

Moreover, this model employs environmentally friendly refrigerants, aligning with modern standards for eco-friendly cooling solutions. The 312AAV/JAV is designed with filters that provide superior air quality by effectively capturing dust and allergens, contributing to a healthier indoor environment.

In summary, the Bryant 312AAV/JAV air conditioning unit represents a blend of efficiency, technology, and durability. With its impressive energy-saving capabilities, smart connectivity, silent operation, and high-quality construction, it stands out as a top choice for those seeking reliable cooling solutions for their homes or light commercial settings. Whether for new installations or replacements, the 312AAV/JAV is designed to deliver exceptional performance while prioritizing comfort and sustainability.
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