Bryant G Series Service And Maintenance Instructions
Hsi mid-efficiency induced-combustion furnaces
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Service and Maintenance Instructions
HSI Mid-Efficiency
Induced-Combustion Furnaces
Sizes 045 thru 155
Series G
Fig. 1-Model GB3AAV Horizontal
®
CERTIFICATION OF
MANUFACTURING SITE
NOTE: Read the entire instruction manual before performing any service or maintenance.
Index
SAFETY CONSIDERATIONS .................................................................................................................................................................................1-2
PROCEDURE...........................................................................................................................................................................................................2
CARE AND MAINTENANCE .................................................................................................................................................................................2-8
Air Filter Arrangement .........................................................................................................................................................................................2-3
Blower Motor and Wheel .....................................................................................................................................................................................3-5
Cleaning Heat Exchanger .....................................................................................................................................................................................5-7
Electrical Controls and Wiring.............................................................................................................................................................................7-8
Troubleshooting...................................................................................................................................................................................................8-13
Unit Wiring Diagram .............................................................................................................................................................................................10
Service Label ..........................................................................................................................................................................................................11
Troubleshooting Guide......................................................................................................................................................................................12-13
Installing and servicing heating equipment can be hazardous due to gas and electrical components. Only trained and qualified personnel 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, on tags, and on labels attached to or
shipped with the unit and other safety precautions that may apply.
Follow all safety codes. In the United States, follow all safety codes including the National Fuel Gas Code (NFGC) NFPA No. 54-1992/ANSI
Z223.1-1992. In Canada, refer to the current edition of the National Standard of Canada CAN/CGA-B149.1- and .2-M95 Natural Gas and Propane
Installation Codes (NSCNGPIC). Wear safety glasses and work gloves. Have fire extinguisher available during start-up and adjustment procedures
and service calls.
Form: SG-GB1A-09
A94087
ama
A PP R O VED
R
SAFETY CONSIDERATIONS
Cancels: SG-GB1A-08
Fig. 2-Model GB3AAV
Downflow
Printed in U.S.A.
5-96
GB1AAV
GB3AAV
A94086
Fig. 3-Model GB1AAV
Upflow
Catalog No. 92-33GB-1A23
A94085
Page
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Table of Contents
Related Manuals for Bryant G Series
Summary of Contents for Bryant G Series
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Page 1: Table Of Contents
Service and Maintenance Instructions HSI Mid-Efficiency GB1AAV Induced-Combustion Furnaces GB3AAV Sizes 045 thru 155 Series G A94087 Fig. 1—Model GB3AAV Horizontal ® A PP R O VED A94086 A94085 Fig. 2—Model GB3AAV Fig. 3—Model GB1AAV Downflow Upflow CERTIFICATION OF MANUFACTURING SITE NOTE: Read the entire instruction manual before performing any service or maintenance. -
Page 2: Electrostatic Discharge (Esd) Precautions Procedure
Recognize safety information. This is the safety-alert symbol . When you see this symbol on the furnace and in instructions or manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. -
Page 3: Blower Motor And Wheel
Table 1—Filter Size Information for Downflow/Horizontal Furnaces (In.) FURNACE FILTER QUANTITY CASING WIDTH AND SIZE 14-3/16 (2) 14 X 20 X 1 17-1/2 (2) 14 X 20 X 1 (2) 16 X 20 X 1 24-1/2 (2) 16 X 20 X 1 Table 2—Filter Size Information for Upflow Furnaces (In.) FILTER QUANTITY AND SIZE FURNACE... - Page 4 AIRFLOW INSTALLATION POSITION OF FILTERS RETURN-AIR PLENUM AIRFLOW ACCESS DOOR A94307 A88486 Fig. 4—Horizontal Filter Arrangement Fig. 5—Downflow Filter Arrangement VENT PIPE DRAFT MOUNTING ENCLOSURE SAFEGUARD SCREWS SWITCH AUXILIARY LIMIT SWITCH RELIEF (WHEN USED) FLUE CONTROL COLLECTOR MOUNTING BOARD SCREWS CONTROL BOARD DRAFT...
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Page 5: Cleaning Heat Exchanger
Clean and lubricate as follows: 1. Remove screw from blower access door (downflow/horizontal furnace only) and remove blower access door. 2. Remove vent pipe enclosure (downflow/horizontal furnace only) and disconnect short piece of vent pipe from relief box. 3. Disconnect wires from auxiliary limit on blower housing (downflow/horizontal furnace only). 4. - Page 6 13 32 11 32 " " BURNER CELL PANEL SURFACE IGNITOR ASSEMBLY IGNITOR " BURNER IGNITOR ASSEMBLY A91252 A93347 Fig. 8—Cleaning Heat Exchanger Cell Fig. 9—Position of Ignitor to Burner e. Gas valve f. Hot surface ignitor g. Flame-sensing electrode 6.
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Page 7: Electrical Controls And Wiring
(9.) Clean burner assembly using vacuum cleaner with soft brush attachment. (10.) Reinstall cell inlet plates and burner assembly. Care must be exercised to center the burners in the cell openings. 9. After cleaning flue openings, check sealant on flue collector to ensure that it has not been damaged. If new sealant is needed, contact your dealer or distributor. -
Page 8: Troubleshooting
FIELD 24-VOLT WIRING FIELD 115-, 208/230-, 460-VOLT WIRING FACTORY 24-VOLT WIRING FACTORY 115-VOLT WIRING NOTE 2 THERMOSTAT FIVE FIELD-SUPPLIED TERMINALS WIRE FUSED DISCONNECT THREE-WIRE 208/230- OR HEATING- 460-VOLT ONLY THREE PHASE 208/230- VOLT SINGLE AUXILIARY 115-VOLT FIELD- PHASE J-BOX SUPPLIED NOTE 1 CONTROL FUSED... - Page 9 24-V THERMOSTAT TERMINALS TEST/TWIN HUMIDIFIER TERMINAL (24-VAC 0.5 AMP MAX) LED OPERATION & DIAGNOSTIC LIGHT HARNESS CONNECTOR SEC-1 24-V TRANSFORMER SEC-2 3-AMP FUSE SPARE-1 COOL BLOWER SPEED HEAT SELECTION TERMINALS SPARE-2 EAC-1 EAC-ELECTRONIC AIR CLEANER TERMINALS (115-VAC 1.5 AMP MAX) 115-VAC (L1) EAC-2 POWER SUPPLY...
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Page 10: Unit Wiring Diagram
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Page 11: Service Label
SERVICE LED CODE STATUS CONTINUOUS OFF - Check for 115VAC at L1 and L2, and 24VAC at SEC-1 and SEC-2. CONTINUOUS ON - Control has 24V power. RAPID FLASHING - Line voltage (115V) polarity reversed. If twinned, refer to twinning kit instructions. EACH OF THE FOLLOWING STATUS CODES IS A TWO DIGIT NUMBER WITH THE FIRST DIGIT DETERMINED BY THE NUMBER OF SHORT FLASHES AND THE SECOND DIGIT BY THE NUMBER OF LONG FLASHES. -
Page 12: Troubleshooting Guide
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- Page 14 SERVICE TRAINING Packaged Service Training programs are an excellent way to increase your knowledge of the equipment discussed in this manual, including: • Unit Familiarization • Maintenance • Installation Overview • Operating Sequence A large selection of product, theory, and skills programs is available, using popular video-based formats and materials.
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- Page 16 —16— © 1996 CAC / BDP P.O. Box 70, Indianapolis, IN 46206 sggb1a09 Book/Tab: 1/6a, 4/8a Catalog No. 92-33GB-1A23...