Bryant 312AAV/JAV Downflow Installation, Horizontal Installation, Suspended Furnace Support

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NOTE: Side return-air openings can be used in UPFLOW and most HORIZONTAL configurations. Do not use side return-air openings in DOWNFLOW configuration.

Bottom

Closure Panel

Bottom Filler Panel

A10273

Fig. 9 - Removing Bottom Closure Panel

Leveling Legs (If Desired)

In upflow position with side return inlet(s), leveling legs may be used. (See Fig. 10.) Install field-supplied, 5/16 x 1-1/2 in. (8 x

38mm) (max) corrosion-resistant machine bolts, washers and nuts.

NOTE: Bottom closure must be used when leveling legs are used. It may be necessary to remove and reinstall bottom closure panel to install leveling legs. To remove bottom closure panel, see item 1 in Bottom Return Air Inlet section in Step 1 above.

To install leveling legs:

1.Position furnace on its back. Locate and drill a hole in each bottom corner of furnace. (See Fig. 10.)

2.For each leg, 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.

5.Reinstall bottom closure panel if removed.

5/16″

(8mm)

(8mm)

5/16″

1 3/4″ (44mm)

1 3/4″ (44mm)

(8mm) 5/16″

(8mm)

5/16″

(44mm) 1 3/4″ (44mm)1 3/4″

A89014

Fig. 10 - Leveling Legs

DOWNFLOW INSTALLATION

NOTE: For downflow applications, this furnace is approved for use on combustible flooring when any one of the following 3 accessories are used:

SSpecial Base, KGASB

SCased Coil Assembly Part No. CNPV, CNRV, CAP, and CAR S Coil Box Part No. KCAKC

1.Determine application being installed from Table 4.

2.Construct hole in floor per Table 4 and Fig. 11.

3.Construct plenum to dimensions specified in Table 4 and Fig. 11.

4.If downflow subbase, KGASB is used, install as shown in Fig. 12. If Coil Assembly Part No. CNPV, CNRV, CAP, CAR or Coil Box Part No. KCAKC is used, install as shown in Fig. 13.

NOTE: It is recommended that the perforated supply-air duct flanges be completely folded over or removed from furnace when installing the furnace on a factory-supplied cased coil or coil box. To remove the supply-air duct flange, use wide duct pliers or hand seamers to bend flange back and forth until it breaks off. Be careful of sharp edges. (See Fig. 14.)

Bottom Return Air Inlet

These furnaces are shipped with bottom closure panel installed in bottom return-air opening. Remove and discard this panel when bottom return air is used. To remove bottom closure panel, perform the following:

1.Tilt or raise furnace and remove 2 screws holding bottom filler panel. (See Fig. 9.)

2.Rotate bottom filler panel downward to release holding tabs.

3.Remove bottom closure panel.

4.Reinstall bottom filler panel and screws.

HORIZONTAL INSTALLATION

The furnace can be installed horizontally in an attic or crawl space on either the left-hand (LH) or right-hand (RH) side. The furnace can be hung from floor joists, rafters or trusses or installed on a non-combustible platform, blocks, bricks or pad.

!WARNING

FIRE, EXPLOSION, AND CARBON MONOXIDE POISONING HAZARD

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

Do not install the furnace on its back or hang furnace with control compartment facing downward. Safety control operation will be adversely affected. Never connect return-air ducts to the back of the furnace.

Suspended Furnace Support

The furnace may be supported under each end with threaded rod, angle iron or metal plumber’s strap as shown. (See Fig. 15 and 16.) Secure angle iron to bottom of furnace as shown. Heavy-gauge sheet metal straps (plumber’s straps) may be used to suspend the furnace from each bottom corner. To prevent screws from pulling out, use 2 #8 x 3/4-in. (19 mm) screw into the side and 2 #8 x 3/4-in. (19 mm) screw in the bottom of the furnace casing for each strap. (See Fig. 15 and 16.)

If the screws are attached to ONLY the furnace sides and not the bottom, the straps must be vertical against the furnace sides and not pull away from the furnace sides, so that the strap attachment screws are not in tension (are loaded in shear) for reliable support.

312AAV

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Contents Service and Maintenance Procedures 312AAV CUT Hazard Safety ConsiderationsIntroduction Furnace Reliability HazardClearances to Combustibles Codes and Standards Electrostatic Discharge ESD Precautions ProcedureCarbon Monoxide Poisoning and Unit Damage Hazard LocationGeneral Property Damage Hazard AIR for Combustion VentilationFIRE, Injury or Death Hazard Fire HazardOutdoor Combustion Air Method Furnace Corrosion HazardCarbon Monoxide Poisoning Hazard Air for Combustion, Ventilation, and Dilution for Outdoors Upflow Installation InstallationSuspended Furnace Support Downflow InstallationHorizontal Installation FIRE, EXPLOSION, and Carbon Monoxide Poisoning HazardRoll-Out Protection Platform Furnace SupportDuct Flanges Opening dimensions In. mmHorizontal Unit Suspension Ductwork Acoustical Treatment Supply Air Connections Filter Arrangement Carbon Monoxide Poisoning HazardAIR Ducts General RequirementsSpeed External Static Pressure IN. W.C Size Inlet Air Delivery CFM With FilterFurnace GAS Piping Fire or Explosion Hazard Air Delivery CFM With Filter*Downflow Furnaces Return Air ConnectionsUpflow Return Air Configurations and Restrictions Furnace Damage Hazard Maximum Capacity of PipeFurnace MAY not Operate Hazard WiringElectrical Shock and Fire Hazard Electrical Connections Electrical Shock HazardElectrical Box on Furnace Casing Side. See Fig Electrical DataBOX Relocation Electrical Connection to J-BOXBX. 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 Vent Height Appliance Application RequirementsInternal Area of Chimney Additional Venting Requirements Upflow Application-Vent Elbow UpDownflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Diameter Vent Height Orientation INPUTBTUH/HR Venting Notes forFurnace Vent Burn Hazard START-UP, ADJUSTMENT, and Safety CheckGeneral Fire and Explosion Hazard Start-Up ProceduresAdjustments Stage Furnace Setup Switch DescriptionRedundant Automatic Gas Control Valve Altitude Derate Multiplier for U.S.AOrifice Hole Seconds Size of Test Dial For Revolution Gas Rate cu ft. /hrFurnace Overheating Hazard Color Speed AS Shipped Speed SelectionDesired Heating Mode Setup Switch Blower OFF Delay SEC Check Safety ControlsChecklist Stage Furnace Blower OFF delay Setup SwitchA10184 A10184A A10185 A10185A Introduction Service and Maintenance ProceduresCarbon Monoxide Poisoning and Fire Hazard Care and MaintenanceWiring Diagram Blower Motor and Wheel Electrical Shock Hazard Cleaning AND/OR Replacing AIR FilterFilter Size Information In. / Mm Igniter Position-Side View Cleaning Heat ExchangerIgniter Position-Top View Sequence of Operation312AAV Single-Speed Cooling Single-Stage Thermostat and Two-Speed Cooling Adaptive ModeThermidistat Mode Continuous Blower Mode Wiring DiagramsTroubleshooting 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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