Carrier 58MCB Service And Maintenance Instructions
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Carrier 58MCB Service And Maintenance Instructions

4-way multipoise fixed-capacity condensing gas furnace
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See also: Service and Maintenance Instructions , Installation, Start-up, and Operating Instructions
58MCB
4---Way Multipoise Fixed---Capacity
Condensing Gas Furnace
Service and Maintenance Instructions
For Sizes 040-- 120, Series 110 & 120
NOTE: Read the entire instruction manual before starting the
installation.

TABLE OF CONTENTS

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WARNING
!
ELECTRICAL
SHOCK, FIRE, OR EXPLOSION
HAZARD
Failure to follow safety warnings exactly could result in
dangerous operation, personal injury, death, or property
damage.
- - Before servicing, disconnect all electrical power to furnace.
- -When servicing controls, label all wires prior to
disconnecting. Reconnect wires correctly.
- - Verify proper operation after servicing.
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SAFETY CONSIDERATIONS

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
1
severe personal injury or death. WARNING signifies a hazard
2
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
2
injury or product and property damage. NOTE is used to highlight
3
suggestions which will result in enhanced installation, reliability, or
3
operation.
4
!
6
7
ELECTRICAL SHOCK, FIRE, OR EXPLOSION
6
HAZARD
7
Failure to follow this warning could result in possible
damage to this equipment, personal injury, or death.
8
The ability to properly perform maintenance on this
10
equipment requires certain expertise, mechanical skills,
11
tools, and equipment. If you do not possess these, do not
attempt to perform any maintenance on this equipment
11
other than those procedures recommended in the User's
13
Manual.
13
13
!
13
14
FIRE OR EXPLOSION HAZARD
Failure to follow this warning could property damage,
personal injury, or death.
Never store anything on, near, or in contact with the 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
compounds, plastic or plastic containers, gasoline, kerosene,
cigarette lighter fluid, dry cleaning fluids, or other volatile
fluids.
3. Paint thinners and other painting compounds, paper bags,
or other paper products.
1
WARNING
WARNING
.

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Summary of Contents for Carrier CARRIER 58MCB

  • Page 1: Table Of Contents

    - - Verify proper operation after servicing. 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 PAGE CAUTION.

  • Page 2: General

    Wiring errors can cause improper and dangerous operation. This furnace can be installed as a direct vent (2- -pipe) or non- -direct vent (1- -pipe) condensing gas furnace. These instructions are written as if the furnace is installed in an upflow application. An...

  • Page 3: Care And Maintenance

    If the control is to be installed in a furnace, follow items 1 through 5 before bringing the con- trol or yourself into contact with the furnace. Put all used AND new controls into containers before touching un- grounded objects.

  • Page 4: Blower Motor And Wheel Maintenance

    2. Remove main furnace door and blower access panel. 3. Release filter retainer wire. (See Fig. 3 or 4.) NOTE: Filters shown in Fig. 3 and 4 can be in furnace blower compartment or in filter cabinet, but not in both.
  • Page 5 Remove blower wheel from housing. CAUTION UNIT DAMAGE HAZARD Failure to follow this caution may result in noise or furnace component failure. The blower wheel should not be dropped or bent as balance will be affected.

  • Page 6: Cleaning Burners

    16. Reconnect wires to gas valve and igniter. Refer to furnace wiring diagram for proper wire location. 17. Reinstall burner box pressure tube to gas valve regulator fit- ting.

  • Page 7: Cleaning Heat Exchangers

    Gas valve switch MUST be facing forward or tilted slightly. 19. Replace burner box cover. 20. Turn on gas and electrical supplies to furnace. WARNING FIRE OR EXPLOSION HAZARD Failure to follow this warning could result in personal injury, death or property damage.

  • Page 8: Flushing Collector Box And Drainage System

    Fig. 9 - - Combustion- -Air Intake Housing Gasket Repair 13. Refer to furnace wiring diagram and reconnect wires to flame rollout switch, gas valve, igniter, and flame sensor. 14. Reconnect pressure switch tubes to gas valve and intake housing. Refer to tube routing label on main furnace door for proper tube location.
  • Page 9 Furnace is shipped from factory in upflow configuration. Pressure tube and drain tube routing MUST match the diagrams below. Condensate Trap; Factory Installed in Blower Shelf (Blower access panel removed) COLLECTOR BOX TUBE (PINK) COLLECTOR BOX TUBE (GREEN) INDUCER HOUSING (MOLDED) DRAIN TUBE...

  • Page 10: Servicing Hot Surface Igniter

    Step 6 — Servicing Hot Surface Igniter The igniter does NOT require annual inspection. Check igniter resistance before removal. 1. Turn off gas and electrical supplies to furnace. CAUTION BURN HAZARD Failure to follow this caution may result in personal injury.

  • Page 11: Electrical Controls And Wiring

    The 24- -v circuit contains an automotive- -type, 3- -amp fuse located on the furnace control. (See Fig. 16.) Any direct shorts of the 24- -v wiring during installation, service, or maintenance will cause this fuse to blow. If fuse replacement is required, use ONLY a fuse of identical size.
  • Page 12 CONDENSING UNIT WIRE NOTES: Connect Y-terminal in furnace as shown for proper blower operation. Some thermostats require a "C" terminal connection as shown. If any of the original wire, as supplied, must be replaced, use same type or equivalent wire.

  • Page 13: Winterizing

    Freezing condensate left in the furnace may damage the furnace. If the furnace will be off for an extended period of time in a structure where the temperature will drop to 32_F (0_C)or below, winterize as follows: 1. Turn off electrical supply to furnace.

  • Page 14: Component Tests

    Opening the blower access door will open the blower door switch and shut off power within the furnace. When power to the furnace is shut off by either method, the status code will be lost because the code is not stored while power is removed for any reason.

  • Page 15: Component Test

    - Defective Hot Surface Ignitor - Low inlet gas pressure - Inadequate flame carryover or rough ignition - Green/Yellow wire MUST be connected to furnace sheet metal 45 CONTROL CIRCUITRY LOCKOUT Auto-reset after one hour lockout due to; - Gas valve relay stuck open - Software check error Reset power to clear lockout.
  • Page 16 PRINTED CIRCIUT BOARD TRAN NEUTRAL NOTE PRINTED CIRCIUT BOARD A02271 Fig. 21 - - Wiring Diagram...
  • Page 17 A05107...
  • Page 18 A05096...
  • Page 19 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.
  • Page 20 Copyright 2009 Carrier Corp. S 7310 W. Morris St. S Indianapolis, IN 46231 Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations. Printed in U.S.A. Edition Date: 10/09 Catalog No: 58MCB---4SM Replaces: 58MCB--- 3SM...

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