Bryant 331AAV Service And Maintenance Procedures Manual
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Bryant 331AAV Service And Maintenance Procedures Manual

Bryant 331AAV Service And Maintenance Procedures Manual

2–speed, 2–stage induced-combustion gas-fired furnace
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TABLE OF CONTENTS

SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION ..........................................................................2
CEDURE ........................................................................................2
CARE AND MAINTENANCE.....................................................2
Cleaning and/or Replacing Air Filter.......................................2
Blower Motor and Wheel.........................................................3
Cleaning Heat Exchanger .........................................................5
Electrical Controls and Wiring.................................................6
WIRING DIAGRAMS...................................................................7
Troubleshooting..............................................................................9
REGISTERED QUALITY SYSTEM
Fig. 1-Model 331AAV Horizontal
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components. Only trained and qualified person-
nel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters. All other operations must
be performed by trained service personnel. When working on
heating equipment, observe precautions in the literature, tags, and
labels attached to or shipped with the unit and other safety
precautions that may apply.
Service and
Maintenance Procedures
2-SPEED, 2-STAGE
INDUCED-COMBUSTION
GAS-FIRED FURNACE
EFFICIENCY
RATING
CERTIFIED
CERTIFIED
®
A94087
Cancels: SP04-55
Fig. 2-Model 331AAV Downflow
Fig. 3-Model 330AAV Uplfow
Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code NFPA No. 54-
1999/ANSI Z223.1-1999. In Canada, refer to the current edition of
the National Standard of Canada CAN/CGA-B149.1- and .2-M95
Natural Gas and Propane Gas Installation Codes. Wear safety
glasses and work gloves. Have fire extinguisher available during
start-up and adjustment procedures and service calls.
-1-
330AAV
331AAV
Series C&D
SP04-66
10-00
A94086
A94085

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Summary of Contents for Bryant 331AAV

  • Page 1: Table Of Contents

    Cleaning Heat Exchanger ............5 Electrical Controls and Wiring..........6 WIRING DIAGRAMS..............7 Troubleshooting................9 EFFICIENCY RATING CERTIFIED A94086 Fig. 2—Model 331AAV Downflow CERTIFIED ® REGISTERED QUALITY SYSTEM A94087 Fig. 1—Model 331AAV Horizontal SAFETY CONSIDERATIONS A94085 Installing and servicing heating equipment can be hazardous due to Fig.

  • Page 2: Introduction

    Recognize safety information. This is the safety-alert symbol 7. An ESD service kit (available from commercial sources) When you see this symbol on the furnace and in instructions or may also be used to prevent ESD damage. manuals, be alert to the potential for personal injury. CARE AND MAINTENANCE Understand these signal words;...

  • Page 3: Blower Motor And Wheel

    FLUE COLLAR BLOCKED MOUNTING VENT SCREWS SAFEGUARD PRESSURE SWITCH RELIEF FLUE COLLECTOR AIRFLOW VALVE CONTROL A94307 Fig. 4—Horizontal Filter Arrangement FILTER RETAINER AIRFLOW WASHABLE FILTER FURNACE INSTALLATION POSITION WASHABLE OF FILTERS FILTER OR DISPOSIBLE MEDIA FILTER RETURN-AIR IN FILTER PLENUM CABINET A00293 Fig.
  • Page 4 TABLE 1—SPEED SELECTOR LIMIT SWITCHES FACTORY- COLOR SPEED ATTACHED A99092 Black High Cool Fig. 7—Model 331AAV Downflow Yellow (When Present) Medium High Spare 3. Downflow/horizontal only. Blue Medium Low Heat a. Disconnect vent connector from furnace flue collar. (See Spare Fig. 7.)

  • Page 5: Cleaning Heat Exchanger

    13 32 11 32 " " WARNING: Blower access door switch opens 115-v BURNER power to control center. No component operation can occur. Caution must be taken when manually closing this switch for service purposes. Failure to follow this warn- ing could result in electrical shock, personal injury, or death.

  • Page 6: Electrical Controls And Wiring

    19. Set thermostat and check furnace for proper operation. 20. Verify blower airflow and speed changes between heating and cooling. 21. Check for gas leaks. 22. Replace control door. WARNING: Never use a match or other open flame to check for gas leaks. Use a soap-and-water solution. A failure to follow this warning could result in fire, personal injury, or death.
  • Page 7 FIELD 24-V WIRING FIELD 115-, 208/230-, 460-V WIRING FACTORY 24-V WIRING FACTORY 115-V WIRING 1-STAGE THERMOSTAT TERMINALS FIVE FIELD-SUPPLIED WIRE FUSED DISCONNECT TWO-WIRE 208/230- OR HEATING- 460-V ONLY THREE PHASE 208/230-V W/W1 SINGLE PHASE Y/Y2 115-V FUSED JUNCTION DISCONNECT SWITCH CONTROL CONDENSING (WHEN REQUIRED)

  • Page 8: Wiring Diagrams

    WIRING DIAGRAMS The Guide will help you identify the problem or failed component. After replacing any component, verify correct operation sequence. Refer to Fig. 10, 11, and 12 for the 330- and 331-AAV Series C & D wiring diagrams. TROUBLESHOOTING Refer to service label.
  • Page 9 CONNECTION DIAGRAM SCHEMATIC DIAGRAM (NATURAL GAS & PROPANE) TO 115VAC FIELD EQUIPMENT DISCONNECT SWITCH NOTE #1 FRS2 NOTE #8 GROUND LO-GAS-HEAT BHI / LOR MED LO BLWM BHT / CLR LGPS HI-GAS-HEAT NOTE #15 GRN/YEL SPARE GRN/YEL BLWR SPARE MED HI HI-COOL NOTE #4 FRS1...

  • Page 10: Component Test

    SERVICE If status code recall is needed, do not remove power or blower door. Briefly remove and then reconnect one main limit wire to display stored status code. LED CODE ST A TUS CONTINUOUS OFF - Check for 115VAC at L1 and L2, and 24VAC at SEC1 and SEC2 CONTINUOUS ON - Control has 24VAC power.

  • Page 11: Troubleshooting

    TROUBLESHOOTING NOTES: WARNING Refer to information label on blower compartment door GUIDE for procedure for use of LED status codes and problem solving suggestions. LED indicator is viewed through window on blower ELECTRICAL SHOCK HAZARD compartment door. If 115-vac power is energized or interrupted during a ONLY QUALIFIED AND TRAINED call for heat, the indoor blower will run for 90 sec before SERVICE PERSONNEL SHOULD...

  • Page 12: Service Training

    Course descriptions and schedules are in our catalog. CALL FOR FREE CATALOG 1-800-962-9212 [ ] Packaged Service Training [ ] Classroom Service Training A94328 © 2000 Bryant Heating & Cooling Systems 7310 W. Morris St. Indianapolis, IN 46231 —12— Printed in U.S.A. sp0466 Catalog No. 5333-018...

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D series330aavC series

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