Bryant 350AAV User Manual

NOTE: Read the entire instruction manual before starting the
installation.
NOTE: This furnace can be installed as a
direct vent (2-pipe)
or non-direct vent (1-pipe) condensing gas furnace.
This symbol → indicates a change since the last issue.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS.....................................................2
CODES AND STANDARDS........................................................4
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........6
INTRODUCTION..........................................................................6
APPLICATIONS............................................................................6
General ......................................................................................6
Upflow Applications.................................................................6
Downflow Applications............................................................8
Horizontal Left (Supply-Air Discharge)
Applications ............................................................................10
Horizontal Right (Supply-Air Discharge)
Applications ............................................................................11
LOCATION..................................................................................14
General ....................................................................................14
Furnace Location Relative to Cooling Equipment ................15
Hazardous Locations...............................................................16
Furnace Location and Application.........................................16
AIR FOR COMBUSTION AND VENTILATION ....................16
INSTALLATION.........................................................................18
Leveling Legs (If Desired).....................................................18
Installation in Upflow and Downflow
Applications ............................................................................19
Installation in Horizontal Applications ..................................21
Air Ducts.................................................................................21
General Requirements .......................................................21
Ductwork Acoustical Treatment .......................................21
Supply Air Connections ....................................................21
Return Air Connections.....................................................21
Filter Arrangement..................................................................22
Bottom Closure Panel.............................................................23
Gas Piping...............................................................................23
Electrical Connections............................................................24
115–v Wiring.....................................................................26
24–v Wiring.......................................................................26
Accessories ........................................................................27
Removal of Existing Furnaces from Common
Vent Systems ..........................................................................27
Combustion Air and Vent Pipe Systems ...............................27
Condensate Drain....................................................................41
General...............................................................................41
Application.........................................................................41
Condensation Drain Protection .........................................42
START-UP, ADJUSTMENTS AND SAFETY CHECK...........42
General ....................................................................................42
Prime Condensate Trap With Water......................................42
Purge Gas Lines......................................................................42
Sequence of Operation............................................................43
Heating Mode....................................................................43
Cooling Mode....................................................................47
Thermidistat Mode ............................................................47
Continuous Blower Mode .................................................47
Heat Pump Mode...............................................................48
Component Test.................................................................48
Adjustments .............................................................................48
Set Gas Input Rate ............................................................48
Set Temperature Rise ........................................................50
Adjust Blower Off Delay (Heat Mode)............................55
Set Thermostat Heat Anticipator ......................................55
Check Safety Controls............................................................55
Check Primary Limit Control ...........................................55
Check Pressure Switch......................................................56
Checklist..................................................................................56
A93040
installation, start-up,
and operating instructions
DELUXE 4-WAY MULITPOISE
FIXED-CAPACITY
CONDENSING GAS FURNACE
Cancels: II 350M-40-19 II 350A-40-1
8-05
350AAV
Series A
—1—

Bryant 350AAV Specifications

General

Brand	Bryant
Model	350AAV
Category	Furnace
Language	English

Summary

Safety Considerations

General Safety Warnings

Covers hazards like fire, explosion, shock, CO poisoning, and unit reliability.

Introduction

Electrostatic Discharge Precautions

Guidelines to prevent damage to electronic components from static discharge during installation.

Applications

General Applications

Overview of furnace applications and required modifications for different orientations.

Upflow Applications

Details for installing the furnace in an upflow configuration, including condensate trap setup.

Downflow Applications

Instructions for downflow installation, including condensate trap relocation and tubing.

Horizontal Left Applications

Procedures for horizontal left discharge installations, covering condensate trap and tubing.

Horizontal Right Applications

Steps for horizontal right discharge installations, including condensate trap and tubing.

Location

General Location Requirements

Specifies general installation location criteria, including protection from water and clearance.

Location Relative to Cooling Equipment

Guidance on positioning the furnace relative to cooling coils to prevent condensation.

Hazardous Locations

Warnings and requirements for installing the furnace in garages or other hazardous atmospheres.

Air for Combustion and Ventilation

Combustion and Ventilation Air Requirements

Details on providing adequate air for combustion and ventilation, adhering to codes.

Installation

Leveling Legs Installation

Instructions on installing leveling legs for furnace support, especially in upflow configurations.

Upflow and Downflow Installation

Specific steps for installing the furnace in upflow and downflow orientations, including plenum and subbase details.

Horizontal Installation

Guidelines for installing the furnace in horizontal left or right discharge positions, covering duct connections.

Air Ducts and Connections

Requirements for supply and return air duct design, connection, and acoustical treatment.

Gas Piping Installation

Procedures and codes for installing gas piping, including pressure testing and shutoff valves.

Electrical Connections

Details for 115-v and 24-v wiring, including grounding and terminal connections.

Start-Up, Adjustments and Safety Check

General Start-Up Procedures

Initial steps before furnace operation, including priming the trap and purging gas lines.

Sequence of Operation

Detailed step-by-step description of furnace operation modes like heating and cooling.

Adjustments and Settings

Procedures for setting gas input rate, temperature rise, and thermostat anticipator.

Safety Controls Verification

Checks for primary limit control and pressure switch to ensure safe operation.

Installation Checklist

A final checklist to ensure all installation steps are completed before operation.