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Bryant 314AAV - User Manual

Bryant 314AAV
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1
Installation, Start--up, Operating and
Service and Maintenance Instructions
Series A
314AAV
VARIABLE--SPEED ECM, INDUCED--COMBUSTION
2--STAGE DELUXE
4--WAY MULTIPOISE GAS FURNACE
SAFETY CONSIDERATIONS 2........................
INTRODUCTION 4..................................
CODES AND STANDARDS 4..........................
Safety 4...........................................
General Installation 4................................
Combustion and Ventilation Air 4......................
Duct Systems 4.....................................
Acoustical Lining and Fibrous Glass Duct 4...............
Gas Piping and Gas Pipe Pressure Testing 4...............
Electrical Connections 4..............................
Venting 4.........................................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE 4.....................................
LOCATION 5.......................................
AIR FOR COMBUSTION AND VENTILATION 8.........
Outdoor Combustion Air Method 9....................
The Standard Method: 9............................
Combination of Indoor and Outdoor Air 10.............
INSTALLATION 10..................................
Bottom Return Air Inlet 10..........................
Side Return Air Inlet 10.............................
Leveling Legs (If Desired) 11........................
Bottom Return Air Inlet 11..........................
Suspended Furnace Support 11.......................
Platform Furnace Support 11.........................
Roll--Out Protection 12.............................
Bottom Return Air Inlet 12..........................
Side Return Air Inlet 12.............................
Filter Arrangement 13..............................
AIR DUCTS 13......................................
General Requirements 13............................
Ductwork Acoustical Treatment 13....................
Supply Air Connections 14..........................
Upflow and Horizontal Furnaces 14...................
Downflow Furnaces 14.............................
Return Air Connections 20..........................
Downflow Furnaces 20.............................
Upflow and Horizontal Furnaces 20...................
GAS PIPING 20.....................................
ELECTRICAL CONNECTION 21.......................
ACCESSORIES 23...................................
VENTING 23.......................................
START--UP, ADJUSTMENT, AND SAFETY CHECK 35.....
General 35........................................
Start--Up Procedures 36..............................
Adjustments 38.....................................
Check Safety Controls 45.............................
Checklist 45.......................................
SERVICE AND MAINTENANCE PROCEDURES 45.......
General 45........................................
Care and Maintenance 47.............................
Sequence of Operation 50.............................
Wiring Diagram 53..................................
Troubleshooting 54..................................
PARTS REPLACEMENT INFORMATION GUIDE 57.......
Always Ask For
Use of the AHRI Certified TM Mark indicates a
manufacturer’s participation in the program. For
verification of certification for individual products,
go to www.ahridirectory.org.
NOTE: Read the entire instruction manual before starting the
installation.
Portions of the text and tables are reprinted from NFPA 54/ANSI
Z223.1--2012E, with permission of National Fire Protection
Association, Quincy, MA 02269 and American Gas Association,
Washington DC 20001. This reprinted material is not the
complete and official position of the NFPA or ANSI on the
referenced subject, which is represented only by the standard in
its entirety.

Questions and Answers

  • L
    Lauren GonzalezAug 2, 2025
    What to do if my Bryant 314AAV Furnace has an ignition lockout?
    • N
      Nicole TurnerAug 3, 2025
      If your Bryant Furnace is experiencing an ignition lockout, turn off the power to the furnace and wait 5 minutes before attempting to restart it.
  • D
    Daniel LarsonAug 6, 2025
    How to fix ignition proving failure in Bryant 314AAV Furnace?
    • N
      Nicole ShieldsAug 6, 2025
      To address an ignition proving failure in your Bryant Furnace, first check that the gas valve is turned on, the manual shut-off valve is open, the green/yellow wire is securely connected to the furnace sheet metal, and the flame sensor is not grounded.
  • L
    Laura BrownAug 11, 2025
    What to do if the low-heat pressure switch did not close or reopened in my Bryant 314AAV?
    • S
      Steven KingAug 11, 2025
      If the low-heat pressure switch in your Bryant Furnace did not close or reopened, check the following: if the low-heat pressure switch is stuck open; if the pressure tubing is disconnected or obstructed; the vent sizing; the low inlet gas pressure (if LGPS is used); if the condensate drain is plugged; if the combustion air supply is restricted; and if there is water in the vent piping, possibly sagging.
  • R
    Richard WatkinsAug 16, 2025
    Why is my Bryant 314AAV Furnace experiencing a gas heating lockout?
    • G
      ghurstAug 16, 2025
      If your Bryant Furnace is experiencing a gas heating lockout, check for the following: improper low-heat gas input adjustment, a gas valve relay stuck closed on the control, or a high-heat solenoid stuck in the gas valve.
  • A
    Amanda HopkinsAug 19, 2025
    How to troubleshoot a limit circuit lockout on a Bryant Furnace?
    • J
      Jamie RyanAug 19, 2025
      To troubleshoot a limit circuit lockout on your Bryant Furnace, reconnect the R thermostat lead and set the thermostat to call for heat. Then, connect a voltmeter across the gas valve connections to see if the gas valve receives 24V.
  • S
    Sean SanchezAug 25, 2025
    What causes an abnormal flame-proving signal in a Bryant 314AAV Furnace?
    • L
      Lisa SanchezAug 25, 2025
      An abnormal flame-proving signal in a Bryant Furnace can be caused by a stuck open or leaky gas valve. Check the gas valve for these conditions.
  • C
    Cheryl McneilAug 28, 2025
    What to do if the pressure switch did not open in my Bryant Furnace?
    • S
      Stephanie HolmesAug 28, 2025
      If the pressure switch in your Bryant Furnace did not open, check to see if the pressure switch is stuck closed.

Summary

Safety Considerations and Codes

Codes and Standards

Covers national and local codes for installation safety and compliance.

Electrostatic Discharge (ESD) Precautions

Procedure to prevent damage to electronic components from static discharge.

Location Guidelines

Guidelines for selecting the proper installation location for the furnace.

Combustion and Ventilation Air

Requirements for providing adequate air for furnace operation.

Installation Procedures

Detailed instructions for installing the furnace in various configurations.

Electrical Connections

Procedures and warnings for making electrical connections to the furnace.

Venting Requirements

Requirements and guidelines for proper furnace venting.

Start-Up, Adjustment, and Safety Check

Steps for initial furnace start-up, adjustments, and safety control verification.

Service and Maintenance Procedures

Guidelines for routine maintenance and servicing of the furnace.

Parts Replacement Information

Directory for obtaining replacement furnace parts.

General Safety Warnings

Critical Safety Hazards

Warnings regarding fire, explosion, shock, and carbon monoxide.

Installation Clearances

Minimum Clearance to Combustibles

Specifies required clearances from combustible materials for safe installation.

Codes and Standards Details

Safety Standards

General safety requirements and national standards.

General Installation Standards

Basic requirements for installing the furnace.

Combustion and Ventilation Air Standards

Ensuring adequate airflow for combustion and ventilation.

Duct System Standards

Standards for designing and installing air duct systems.

Gas Piping and Pressure Testing

Procedures for gas piping installation and leak testing.

Electrical Connection Standards

Requirements for safe electrical hookups.

Venting Standards

Standards for connecting the furnace vent system.

Air for Combustion and Ventilation

Hazards and Contaminants

Warnings about contaminated air affecting furnace safety and performance.

Installation Configuration

Upflow Installation

Specific installation steps for upflow configurations.

Downflow Installation

Specific installation steps for downflow configurations.

Horizontal Installation

Guidelines for installing the furnace in a horizontal position.

Duct and Air Connections

Filter Arrangement

Information on filter installation and types.

Air Ducts General Requirements

General design and sizing standards for duct systems.

Supply Air Connections

Instructions for connecting supply air ducts.

Venting and Gas Piping

Return Air Configurations and Restrictions

Restrictions for return air connections in different furnace orientations.

Gas Piping

Installation and safety procedures for gas piping.

Electrical Connections and Wiring

Electrical Safety Hazards

Warnings regarding electrical shock and fire during installation.

115-V Wiring

Specific instructions for 115-volt wiring.

J-Box Relocation

Procedure for relocating the junction box.

Wiring and Box Hazards

Hazards related to mounting disconnect switches and wiring.

Wiring Diagram

Electrical schematic illustrating furnace wiring connections.

24-V Wiring

Instructions for making 24-volt thermostat and accessory wiring connections.

Safety Warnings and Procedures

Carbon Monoxide Poisoning Hazard

Warnings about improper venting and carbon monoxide risks.

General Venting Requirements

Safety codes and requirements for proper vent sizing and installation.

Chimney Inspection

Chimney Inspection Chart

Flowchart to guide chimney inspection for suitability.

Masonry Chimney Requirements

Requirements for masonry chimneys used with the furnace.

Appliance Application Requirements

Impact of appliance operation on venting system performance.

Burn Hazard Caution

Caution regarding hot vent pipes near children.

Additional Venting Requirements

Cut Hazard Caution

Warning about sharp edges on sheet metal parts.

Start-Up and Maintenance Procedures

Start-Up Procedures

Steps for initial furnace start-up and basic operation.

Check Safety Controls

Steps to test furnace safety controls like limit and draft safeguard switches.

Checklist

Final checks to ensure proper installation and operation.

Service and Maintenance Warnings

General safety warnings before performing maintenance.

Media Cabinet Filter Procedures

Step-by-step guide for filter replacement.

Blower Motor and Wheel Maintenance

Maintenance for blower motor and wheel cleanliness.

Furnace Adjustments and Configuration

Furnace Setup Switch Description

Explanation of the function of each furnace setup DIP switch.

Gas Input and Manifold Pressure Adjustments

Procedures for adjusting gas input and manifold pressure.

Setting Blower Speeds and Delays

Adjusting blower off delay, thermostat anticipator, and airflow.

Wiring Diagram and Diagnostics

Wiring Diagram

Electrical schematic illustrating furnace wiring connections.

Electrical Controls and Wiring

Overview of furnace electrical controls and wiring practices.

Component Self-Test

Procedure for testing individual furnace components.

Ongoing Care and Heat Exchanger Cleaning

Care and Maintenance Overview

General guidelines for furnace care and maintenance.

Cleaning Heat Exchanger

Procedures for cleaning or replacing heat exchangers.

Sequence of Operation

Two-Stage Heating Operation

How the furnace operates in two-stage heating modes.

Cooling Mode Operation

Modes of operation for cooling systems.

Thermidistat Mode

Operation with a Thermidistat for dehumidification.

Continuous Blower Mode

How the blower operates in continuous mode.

Troubleshooting and Diagnostics

Component Test Procedure

Procedure for testing individual furnace components.

Troubleshooting Guide

Guide to diagnose and resolve furnace operational issues.

Bryant 314AAV Specifications

General IconGeneral
Model314AAV
TypeGas Furnace
Heating Capacity40, 000 - 120, 000 BTU/h
StagesSingle-stage
Blower TypeMulti-speed
Fuel TypeNatural Gas or Propane
Efficiency80% AFUE
AFUE Rating80%
Blower Motor TypeMulti-speed
Ignition TypeHot Surface Ignition
Efficiency RatingHigh Efficiency
Warranty10-Year Parts Limited Warranty upon timely registration

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