Bryant 312AAV/JAV instruction manual Sequence of Operation, Igniter Position-Top View

Page 49

striking with ball-peen hammer. TIGHTNESS IS VERY IMPORTANT.

NOTE: The materials needed in item 9 can usually be purchased at local hardware stores.

(1.) Attach variable-speed, reversible drill to the end of spring cable (end opposite brush).

(2.) Insert brush end of cable into the outlet opening of cell and slowly rotate with drill. DO NOT force cable. Gradually insert cable into upper pass of cell. (See Fig. 55.)

(3.) Work cable in and out of cell 3 or 4 times to obtain sufficient cleaning. DO NOT pull cable with great force. Reverse drill and gradually work cable out.

(4.) Insert brush end of cable in burner inlet opening of cell, and proceed to clean 2 lower passes of cell in same manner as upper pass.

(5.) Repeat foregoing procedures until each cell in fur- nace has been cleaned.

(6.) Using vacuum cleaner, remove residue from each cell.

(7.) Using vacuum cleaner with soft brush attachment, clean burner assembly.

(8.) Clean flame sensor with fine steel wool.

(9.) Install NOx baffles (if removed.)

(10.) Reinstall burner assembly. Center burners in cell openings.

10.Remove old sealant from cell panel and collector box flange.

11.Spray releasing agent on the heat exchanger cell panel where collector box assembly contacts cell panel.

NOTE: A releasing agent such as cooking spray or equivalent (must not contain corn or canola oil, aromatic or halogenated hydrocarbons or inadequate seal may occur) and RTV sealant (G.E. 162, 6702, or Dow-Corning 738) are needed before starting installation. DO NOT substitute any other type of RTV sealant. G.E. 162 (P771-9003) is available through RCD in 3-oz. tubes.

12.Apply new sealant to flange of collector box and attach to cell panel using existing screws, making sure all screws are secure.

13.Reconnect wires to the following components (Use con- nection diagram on wiring label, if wires were not marked for reconnection locations.):

a.Draft safeguard switch.

b.Inducer motor.

c.Pressure switches.

d.Limit overtemperature switch.

e.Gas valve.

f.Hot surface igniter.

g.Flame-sensing electrode.

h.Flame rollout switches.

14.Reinstall internal vent pipe, if applicable.

15.Reinstall vent connector on furnace vent elbow. Securely fasten vent connector to vent elbow with 2 field-supplied, corrosion-resistant, sheet metal screws located 180_ apart.

1-7/8

(47.6 mm)

A05026

Fig. 54 - Igniter Position-Top View

312AAV

A91252

Fig. 55 - Cleaning Heat Exchanger Cell

16.Replace blower access door only, if it was removed.

17.Set thermostat above room temperature and check furnace for proper operation.

18.Verify blower airflow and speed changes between heating and cooling.

!WARNING

FIRE OR EXPLOSION HAZARD

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

Never test for gas leaks with an open flame. Use a commercially available soap solution made specifically for the detection of leaks to check all connects.

19.Check for gas leaks.

20.Replace outer access door.

Step 3 — Sequence of Operation

NOTE: Furnace control must be grounded for proper operation or control will lockout. Control is grounded through green wire connected to gas valve and burner bracket screw. Using the schematic diagram in Fig. 52, follow the sequence of operation through the different modes. Read and follow the wiring diagram very carefully.

NOTE: If a power interruption occurs during a call for heat (W/W1 or W/W1-and-W2), the control run the blower for the selected blower off-delay period two seconds after power is restored and if the thermostat is still calling for gas heating. The LED light will flash code 12 during this period, after which the LED will be ON continuous, as long as no faults are detected. After this period, the furnace will respond to the thermostat normally.

The blower door must be installed for power to be conducted through the blower door interlock switch ILK to the furnace

49

Page 48 Page 50
Image 49
Page 48 Page 50
Contents Service and Maintenance Procedures 312AAV Introduction Safety ConsiderationsFurnace Reliability Hazard CUT HazardClearances to Combustibles Codes and Standards Electrostatic Discharge ESD Precautions ProcedureGeneral LocationCarbon Monoxide Poisoning and Unit Damage Hazard FIRE, Injury or Death Hazard AIR for Combustion VentilationFire Hazard Property Damage HazardCarbon Monoxide Poisoning Hazard Furnace Corrosion 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 ConnectionsFurnace Air Delivery CFM With FilterSpeed 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 Internal Area of Chimney Appliance Application RequirementsVent Height Additional Venting Requirements Upflow Application-Vent Elbow UpDownflow Application-Vent Elbow Up then Left Horizontal Left Application Vent Elbow Left Furnace Vent Venting Notes forDiameter Vent Height Orientation INPUTBTUH/HR General START-UP, ADJUSTMENT, and Safety CheckBurn 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 Furnace Overheating Hazard Gas Rate cu ft. /hrSeconds 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 Filter Size Information In. / Mm Cleaning AND/OR Replacing AIR FilterBlower Motor and Wheel Electrical Shock Hazard Igniter Position-Side View Cleaning Heat ExchangerIgniter Position-Top View Sequence of Operation312AAV Thermidistat Mode Single-Stage Thermostat and Two-Speed Cooling Adaptive ModeSingle-Speed Cooling Troubleshooting Wiring DiagramsContinuous 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.
Top Page Image Contents