Carrier 58GFA User Manual download pdf

58DFA, 58GFA

Induced-Combustion Furnaces

Service and Maintenance Instructions

For Sizes 065-150 Series 120

NOTE: Read the entire instruction manual before starting the

installation.

Index Page

SAFETY CONSIDERATIONS.....................................................1

CARE AND MAINTENANCE..................................................1-8

Air Filter Arrangement..........................................................2-3

Blower Motor and Wheel......................................................3-4

Cleaning Heat Exchanger......................................................4-5

Electrical Controls and Wiring .............................................5-6

Pilot ...........................................................................................6

Troubleshooting ........................................................................6

Unit Wiring Diagram................................................................7

Troubleshooting Chart ..............................................................8

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, 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 NFPA No. 54-

1992/ANSI Z223.1-1992 (NFGC). In Canada, refer to the current

edition of the National Standard of Canada CAN/CGA-B149.1-

and .2-M91 Natural Gas and Propane Gas Installation Codes

(NSCNGPIC). Wear safety glasses and work gloves. Have fire

extinguisher available during start-up and adjustment procedures

and service calls.

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 word DANGER, WARNING, or CAU-

TION. These words are used with the safety-alert symbol. DAN-

GER identifies the most serious hazards which will result in severe

personal injury or death. WARNING signifies a hazard that could

result in personal injury or death. CAUTION is used to identify

unsafe practices which would result in minor personal injury or

product and property damage. NOTE is used to highlight sugges-

tions that will result in enhanced installation, reliability, or

operation.

Fig. 2—Model 58GFA Upflow

A92057

Fig. 1—Model 58DFA-

Downflow

A92058

ama

CANADIAN GAS ASSOCIATION

A PPR O V ED

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book 1 4

Tab 6a 8a

PC 101 Catalog No. 565-801 Printed in U.S.A. Form 58D,G-3SM Pg 1 11-93 Replaces: 58D,G-2SM

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1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - Induced-Combustion Furnaces

58DFA, 58GFAInduced-Combustion FurnacesService and Maintenance InstructionsFor Sizes 065-150 Series 120NOTE: Read the entire instruction manual before

Page 2

The ability to properly perform maintenance on this equip-ment requires certain expertise, mechanical skills, tools, andequipment. If you do not posse

Page 3 - Fig. 5—Model 58DFA Downflow

b. Remove blower access door after removing 2 screws.c. Reach up behind top plate, tilt filters toward center ofreturn-air plenum, remove filters, and

Page 4

9. Mark blower wheel, motor, and motor support in relation toblower housing before disassembly to ensure proper reassem-bly.10. Loosen setscrew holdin

Page 5 - OF BURNER CARRYOVER

(6.) Insert brush end of cable in lower opening of cell, andproceed to clean 2 lower passes of cell in same manneras 2 upper passes.(7.) Repeat forego

Page 6

Fig. 8—Heating and Cooling Application Wiring DiagramA78461115-VOLT FIELD-SUPPLIEDFUSEDDISCONNECT AUXILIARYJ-BOX CONTROLBOX24-VOLTTERMINALB

Page 7 - Fig. 9—Unit Wiring Diagram

Fig. 9—Unit Wiring DiagramA92176FU1IDRPL1-3PR-1PR-2SEC-1SEC-2TRAN24VAC115VACBLWMLOMED LOMED HIHICOMCAPL2COM4321CCFRHFRPL4NOTE#4NOTE#8EAC-1EAC-2L1ILKEQ

Page 8

A91253Is 24VACacross pressureswitch N/O contact& screw C onboard?YESNOIs 24VACacross pressureswitch N/O contact& screw C onboard?Is he

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Carrier 58GFA User Manual

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