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58YAV

Induced-Combustion Furnaces

Service and Maintenance Instructions

For Sizes 070-155, Series 110 and 120

NOTE:

Read the entire instruction manual before starting the

installation.

TABLE OF CONTENTS

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

INTRODUCTION ..........................................................................1

ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS PRO-
CEDURE ........................................................................................2

CARE AND MAINTENANCE.....................................................2

Cleaning and/or Replacing Air Filter.......................................2
Blower Motor and Wheel.........................................................3
Cleaning Heat Exchanger .........................................................4
Electrical Controls and Wiring.................................................5

Wiring Diagrams ............................................................................9

Troubleshooting..............................................................................9

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.

Follow all safety codes. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) 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
(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 these 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. WARNING signifies hazards
which 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
suggestions which will result in enhanced installation, reliability,
or operation

The ability to properly perform maintenance on this equip-
ment requires certain expertise, mechanical skills, tools, and
equipment. If you do not possess these, do not attempt to
perform any maintenance on this equipment other than those
procedures recommended in the User’s Manual. A FAILURE
TO FOLLOW THIS WARNING COULD RESULT IN
POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS
PERSONAL INJURY, OR DEATH.

Label all wires prior to disconnection when servicing con-
trols. Wiring errors can cause improper and dangerous
operation.

INTRODUCTION

These procedures are written for size 66,000 through 154,000 Btuh
input units of the 58YAV Gas-Fired Induced Combustion Furnace.

REGISTERED QUALITY SYSTEM

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Fig. 1—Model 58YAV Upflow Furnace

A94085

Visit www.carrier.com

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. 535-771

Printed in U.S.A.

Form 58YAV–3SM

Pg 1

10-00

Replaces: 58YAV–2SM

Содержание INDUCED COMBUSTION 58YAV

Страница 1: ...hen you see this symbol on the furnace and in instructions or manuals be alert to the potential for personal injury Understand these 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 WARNING signifies hazards which could result in personal injury or death CAUTION ...

Страница 2: ...nsult your local dealer as to proper frequency of maintenance and availability of a maintenance contract Never store anything on near or in contact with furnace such as 1 Spray or aerosol cans rags brooms dust mops vacuum cleaners or other cleaning tools 2 Soap powders bleaches waxes or other cleaning com pounds plastic or plastic containers gasoline kerosene cigarette lighter fluid dry cleaning f...

Страница 3: ...d not be dropped or bent as balance will be affected 8 If a greasy residue is present on blower wheel remove wheel from the blower housing and wash it with an appropriate degreaser To remove wheel a Mark blower wheel location on shaft before disassembly to ensure proper reassembly b Loosen setscrew holding blower wheel on motor shaft NOTE Mark blower mounting arms motor and blower housing so motor...

Страница 4: ...itor See Fig 3 for correct ignitor location 9 Using field provided small wire brush steel spring cable reversible electric drill and vacuum cleaner clean cells as follows a Assemble wire brush and steel spring cable 1 Use 48 in of 1 4 in diameter high grade steel spring cable commonly known as drain clean out or Roto Rootert cable 2 Use 1 4 in diameter wire brush commonly known as 25 caliber rifle...

Страница 5: ... must be maintained properly Refer to Fig 5 for field wiring information and to Fig 6 for furnace wiring information NOTE If the polarity is not correct the STATUS LED on the control will flash rapidly and prevent the furnace from heating The control system also requires an earth ground for proper operation of the control and flame sensing electrode The 24 v circuit contains an automotive type 3 a...

Страница 6: ...C CONDUCTOR ON PCB FIELD WIRING TERMINAL FIELD GROUND EQUIPMENT GROUND FIELD SPLICE PLUG RECEPTACLE L1 L2 L1 BLWR HI LO TO 115VAC FIELD DISCONNECT NOTE 4 EQUIPMENT GROUND SPARE 2 HEAT SPARE 1 COOL NOTE 7 COM HSIR EAC 1 START OL COM HI MED HI MED LO LO BLWM SCHEMATIC DIAGRAM NATURAL GAS PROPANE EAC 2 1 1 HSI 2 PL5 2 PL2 3 PL3 PR2 115VAC PR1 TRAN 24VAC 1 2 IDR TEST TWIN FU1 NOTE 6 CAP L2 PL1 8 FSE 9...

Страница 7: ...s and retrieval request is ignored 2 When above items have been completed the following will occur a LED flashes a status code 4 times Record this status code for further troubleshooting b Inducer motor starts and continues to run the entire component test c Hot surface ignitor is energized for 15 sec then de energized d Main blower operates at heating speed for 10 sec then turns off e Main blower...

Страница 8: ...lame roll out switch requires manual reset Check for Defective blower motor or capacitor Dirty filter or restricted duct system Loose blower wheel Defective switch or connections Inadequate combustion air supply Flame Roll out Switch or fuse link open Open Flame Roll out Switch or fuse link Manual reset or replace IGNITION PROVING FAILURE Control will try three more times before lockout 14 occurs ...

Страница 9: ...idly and test request will be ignored e Component Test will function as described in item 2 above f Check LED status g If LED status indicates proper operation RELEASE BLOWER ACCESS DOOR SWITCH replace blower access door and replace control access door WIRING DIAGRAMS Refer to Fig 5 6 and 7 for the 58YAV furnace wiring diagrams TROUBLESHOOTING Refer to service label See Fig 8 The Troubleshooting G...

Страница 10: ...ill start and run for the entire component test The HSI blower motor heat speed and blower motor cool speed will run for 10 15 sec each Determine status code The status code is a 2 digit number with the first digit determined by the number of short flashes and the second digit by the number of long flashes Was there a previous fault code other than No 11 Does control respond to W Y or G 24 vac the...

Страница 11: ...ed while gas valve was de energized Inducer will run until fault is cleared Check for Stuck open gas valve solenoid or leak Defective control center 23 PRESSURE SWITCH WILL NOT OPEN Check for Disconnected or obstructed pressure tubing Defective pressure switch 24 LOW VOLTAGE FUSE IS OPEN Check for Short in low voltage wiring including thermostat leads shorting to ductwork or furnace cabinet Discon...

Страница 12: ...231 58yav3sm 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 535 771 Printed in U S A Form 58YAV 3SM Pg 12 10 00 Replaces 58YAV 2SM ...

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