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Bryant 912SD User Manual

Bryant 912SD
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912SD
SINGLE--STAGE, 35--IN. (889 MM) Tall
4--WAY MULTIPOISE
CONDENSING GAS FURNACE
Installation, Start---up, Operating and
Se rvice and Mainte nance Instr uct io ns
NOTE: Read the entire instruction manual before starting the installation.
SECTIONS
SAFETY CONSIDERATIONS 3.........................
INTRODUCTION 4...................................
CODES AND STANDARDS 4...........................
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS 5...
ACCESSORIES 5.....................................
LOCATION 7........................................
AIR FOR COMBUSTION AND VENTILATION 9..........
CONDENSATE TRAP 12...............................
CONDENSATE DRAIN 17.............................
INSTALLATION 21...................................
AIR DUCTS 31.......................................
GAS PIPING 33......................................
ELECTRICAL CONNECTIONS 34.......................
VENTING 39........................................
START-- UP, ADJUSTMENT, AND SAFETY CHECK 63......
SERVICE AND MAINTENANCE PROCEDURES 73........
SEQUENCE OF OPERATION 81........................
PARTS REPLACEMENT GUIDE 85......................
Portions of the text and tables are reprinted from current edition of
NFPA 54/ANSI Z223.1, 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.
TABLES
Loose Parts Bag 4.....................................
Minimum Clearances to Combustible Materials 8.............
Minimum Free Area Required 11.........................
Minimum Space Volumes 11.............................
Filter Size Information 27...............................
Opening Dimensions 30................................
Air Delivery CFM 32...................................
Maximum Capacity of Pipe 34...........................
Electrical Data 38......................................
Vent T e rmination Kit for Direct Vent (2--Pipe) System 41.......
Hangar Spacing 48.....................................
Combustion--Air Vent Pipe, Fitting & Cement Material.. 50.....
Maximum Allowable Exposed Vent Lengths Insulation 51......
Maximum Equivalent Vent Length 52......................
Deductions from Maximum Equivalent Vent Length 52........
Blower Off Delay Setup Switch 67........................
Altitude Derate Multiplier for U.S.A. 68....................
Gas Rate 70..........................................
Orifice Size and Manifold Pressure 71.....................
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Bryant 912SD Specifications

General IconGeneral
Blower Motor TypeMulti-Speed
Ignition TypeHot Surface Ignition
Fuel TypeNatural Gas
StagesSingle-Stage
Warranty10-Year Limited Warranty

Summary

MASSACHUSETTS INSTALLATION REQUIREMENTS

CARBON MONOXIDE DETECTOR REQUIREMENTS

Mandates for CO detector installation and specifications.

SIGNAGE REQUIREMENTS

Requirements for specific warning signage near the vent.

SAFETY CONSIDERATIONS

HAZARD WARNINGS

Critical warnings for fire, explosion, electrical shock, and CO poisoning hazards.

OPERATIONAL CAUTIONS

Cautions for furnace reliability, component damage, and safe operation.

GENERAL SAFETY PRACTICES

Guidelines on PPE, following instructions, and understanding signal words.

INTRODUCTION AND GENERAL GUIDELINES

FURNACE OVERVIEW AND GENERAL REQUIREMENTS

Furnace features, installation types, and general installation notes.

CODES, STANDARDS, AND START-UP

Compliance with codes, standards, and essential start-up procedures.

ESD PRECAUTIONS AND ACCESSORIES

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS

Procedure to protect electronic components from ESD during installation.

ACCESSORIES INFORMATION

Reference to product data sheet for available accessories.

LOCATION AND OPERATING ENVIRONMENT

INSTALLATION LOCATION GUIDELINES

Requirements for furnace placement and surrounding environment.

CARBON MONOXIDE AND CORROSION WARNINGS

Warnings about CO poisoning and component damage from corrosive air.

AIRFLOW AND CLEARANCES

MULTIPOISE ORIENTATIONS

Diagrams illustrating different furnace airflow orientations.

CLEARANCES AND HAZARD WARNINGS

Required clearances and hazard warnings for installation.

COMBUSTION AND VENTILATION AIR

AIR SUPPLY METHODS AND REQUIREMENTS

Methods for providing combustion air based on space volume and code compliance.

CONDENSATE TRAP INSTALLATION

ORIENTATION-SPECIFIC RELOCATION

Instructions for relocating the condensate trap based on furnace orientation.

HORIZONTAL DRAIN TRAP GROMMET

Information on the accessory grommet for horizontal installations.

CONDENSATE DRAIN CONNECTION

FREEZE PROTECTION AND DRAIN LINE ROUTING

Precautions for freezing conditions and instructions for drain line routing.

UPFLOW INSTALLATION

FURNACE RELIABILITY CAUTION

Caution regarding furnace reliability and potential damage from specific coil installations.

SUPPLY AND RETURN AIR CONNECTIONS

RETURN AIR CONNECTIONS AND LEVELING LEGS

Guidelines for return air connections, bottom/side inlets, and leveling legs.

DOWNFLOW AND HORIZONTAL INSTALLATION

HORIZONTAL INSTALLATION NOTES

Specific considerations for horizontal furnace installation.

FURNACE MOUNTING AND PROTECTION

ROLL-OUT PROTECTION

Instructions for installing flame roll-out protection.

FURNACE CONNECTIONS AND FILTERS

FILTER ARRANGEMENT AND HAZARDS

Filter placement options and associated fire/CO/poisoning hazards.

FILTER AND DUCT SIZING

PRESSURE DROP CONSIDERATIONS

Importance of pressure drop in filter and duct sizing.

MEDIA FILTER INSTALLATION OPTIONS

AIR DUCTS AND DUCTWORK CONSIDERATIONS

GENERAL DUCTWORK REQUIREMENTS

Design, sizing, and connection guidelines for ductwork.

GAS PIPING INSTALLATION

GAS PIPING HAZARDS AND REQUIREMENTS

Warnings and requirements for safe gas piping installation.

MASSACHUSETTS SPECIFIC GAS PIPING REGULATIONS

Specific gas piping regulations for installations in Massachusetts.

ELECTRICAL CONNECTIONS AND WIRING

ELECTRICAL HAZARDS AND GROUNDING

Warnings about electrical hazards, grounding, and furnace operation.

115-V WIRING AND J-BOX INSTALLATION

J-BOX AND EXTERNAL BOX INSTALLATION

Procedures for installing junction boxes and external electrical boxes.

EXTERNAL WIRING CONNECTIONS

FURNACE J-BOX WIRING PROCEDURES

Instructions for power cord and BX cable installation in the furnace J-Box.

24-V WIRING AND ACCESSORY CONNECTIONS

24-V THERMOSTAT AND ACCESSORY WIRING

Connecting 24-V thermostat, EAC, and humidifier.

THERMOSTAT WIRING AND VENTING PLANNING

VENTING SYSTEM PLANNING

Initial planning considerations for furnace venting systems.

CANADIAN VENTING REQUIREMENTS AND GENERAL VENTING

SPECIAL VENTING REQUIREMENTS FOR CANADA

Specific venting requirements for installations in Canada.

VENTING SYSTEM CONFIGURATIONS AND TERMINATIONS

VENT TERMINATION SUPPORT AND CO HAZARD

Recommended support for vent terminations and CO hazard warning.

VENT TERMINATION AND LOCATION

VENT TERMINATION LOCATION AND SUPPORT

Guidelines for locating and supporting vent terminations.

VENT PIPE SIZING AND TERMINATION DETAILS

PIPE SIZING AND ALBERTA/SASKATCHEWAN TERMINATIONS

Guidelines for sizing pipes and termination requirements for Alberta/Saskatchewan.

COMBUSTION AIR INLET AND VENTING CALCULATIONS

VENTING SYSTEM LENGTH CALCULATIONS

Steps for calculating Total Equivalent Vent Length (TEVL) and Maximum Equivalent Vent Length (MEVL).

NEAR FURNACE VENT CONNECTIONS

VENT PIPE CONFIGURATION AND CO HAZARD

Guidelines for vent pipe configuration and CO hazard warnings.

VENT PIPE INSTALLATION OPTIONS AND TERMINATIONS

OPTIONAL VENT PIPE INSTALLATION AND CAUTIONS

Optional vent pipe installation methods and associated cautions.

VENT TERMINATION INSTALLATION

CONCENTRIC AND SIDEWALL TERMINATIONS

Installation of concentric and sidewall vent terminations.

EQUIVALENT VENT LENGTH CALCULATIONS

MAXIMUM EQUIVALENT VENT LENGTH (MEVL)

Table and notes on maximum allowable vent lengths.

VENTING SYSTEM LENGTH CALCULATION EXAMPLES

INSIDE CORNER TERMINATION CLEARANCES

FURNACE CONFIGURATIONS FOR VENTING

UPFLOW AND DOWNFLOW VENT CONFIGURATIONS

Diagrams illustrating vent configurations for upflow and downflow orientations.

HORIZONTAL FURNACE VENTING CONFIGURATIONS

VENTING OPTIONS AND PIPE ATTACHMENT

NOTES ON VENTING OPTIONS

Important notes and considerations for various venting options.

DIRECT VENT TERMINATION CLEARANCES

VENTILATED AND NON-DIRECT VENT TERMINATION CLEARANCES

SERVICE AND MAINTENANCE PROCEDURES

ELECTRICAL CONTROLS AND WIRING HAZARDS

Warnings and procedures for electrical controls, wiring, and hazards.

UNIT OPERATION CAUTIONS AND CONDENSATE PRIMING

Cautions for unit operation and instructions for priming the condensate trap.

GAS ADJUSTMENTS AND TROUBLESHOOTING

MANIFOLD PRESSURE AND ORIFICE ADJUSTMENTS

Procedures for adjusting manifold pressure and orifice settings.

MANIFOLD PRESSURE ADJUSTMENT

TEMPERATURE RISE ADJUSTMENT AND GAS CHECKS

TEMPERATURE RISE AND ELECTRICAL HAZARDS

Adjusting temperature rise and electrical operation hazards.

BLOWER ADJUSTMENTS AND THERMOSTAT SETTINGS

BLOWER OFF DELAY AND COOLING AIRFLOW

Adjusting blower off delay and cooling airflow settings.

START-UP CHECKLIST AND ALTITUDE DERATES

START-UP CHECKLIST ITEMS

Checklist for verifying proper installation and operation.

FURNACE SERVICE AND TROUBLESHOOTING

TROUBLESHOOTING GUIDE

A guide to diagnosing and resolving furnace operation problems.

COMPONENT SELF-TEST AND CARE

COMPONENT SELF-TEST PROCEDURE

Steps to perform a component self-test for diagnostics.

MAINTENANCE AND COMPONENT CLEANING

MINIMUM MAINTENANCE AND FILTER REPLACEMENT

Basic maintenance tasks including filter cleaning/replacement.

BLOWER MOTOR AND WHEEL MAINTENANCE

Procedures for cleaning the blower motor and wheel.

BLOWER ASSEMBLY AND BURNER MAINTENANCE

BURNER AND FLAME SENSOR CLEANING

Procedures for cleaning burners and the flame sensor.

BURNER ASSEMBLY REINSTALLATION

IGNITER CHECKS AND DRAINAGE SYSTEM FLUSHING

COLLECTOR BOX AND DRAINAGE SYSTEM MAINTENANCE

Procedures for flushing the collector box and cleaning the condensate drain.

CONDENSATE DRAIN REINSTALLATION AND HEAT EXCHANGER CLEANING

HEAT EXCHANGER CLEANING AND HAZARDS

Procedures for cleaning heat exchangers and associated electrical hazards.

WINTERIZATION AND SECONDARY HEAT EXCHANGERS

WINTERIZATION PROCEDURES AND CAUTIONS

Steps for winterizing the furnace and associated cautions.

SEQUENCE OF OPERATION MODES

HEATING AND COOLING MODES

Description of furnace operation in heating and cooling modes.

TROUBLESHOOTING GUIDE

TROUBLESHOOTING FLOWCHART

A step-by-step flowchart for diagnosing furnace issues.

TROUBLESHOOTING STATUS CODES

WIRING AND CONNECTION DIAGRAMS

CONNECTION AND SCHEMATIC DIAGRAMS

Diagrams illustrating electrical connections and schematic layout.

PARTS REPLACEMENT AND SAFETY WARNINGS

MODEL NOMENCLATURE AND SAFETY HAZARDS

Furnace model identification and critical safety warnings.

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