Carrier 58MCA- User Manual
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Table of Contents:
- Page 2 – Fig. 2—Multipoise Orientations
- Page 3 – Fig. 3—Bottom Filter Arrangement; WASHABLE
- Page 4 – Step 3—Cleaning Burners; Table 1—Speed Selector; MANIFOLD
- Page 5 – Step 4—Cleaning Heat Exchangers; Fig. 6—Cleaning Inlet Openings of Primary Heat; PAM
- Page 6 – Fig. 8—Furnace Pressure and Drain Tubing Diagram; HORIZONTAL; INSTALLATION
- Page 7 – Step 6—Servicing Hot Surface Ignitor; BURNER FLAME; Fig. 10—Gasket on Collector Box; RTV
- Page 8 – Step 7—Electrical Controls and Wiring; Fig. 11—Hot Surface Ignitor Location and Burner
- Page 9 – Step 8—Troubleshooting; Fig. 13—Control Center
- Page 10 – Step 10—Winterizing; F MINIMUM INSTALLED
- Page 12 – Diagram; PCB
- Page 13 – Fig. 17—Service Label; SERVICE; 3 PRESSURE SWITCH DID NOT OPEN Check for:; COMPONENT TEST; LED CODE
- Page 16 – SERVICE TRAINING; • Unit Familiarization
58MCA
4-Way Multipoise Fixed-Capacity
Direct-Vent Condensing Gas Furnace
Service and Maintenance Instructions
→
For Sizes 040—140, Series 131
NOTE:
Read the entire instruction manual before performing any
service or maintenance.
This symbol
→
indicates a change since the last issue.
Index
Page
SAFETY CONSIDERATIONS ..................................................1-2
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS........2
GENERAL......................................................................................2
CARE AND MAINTENANCE................................................2-11
Cleaning and/or Replacing Air Filter.......................................3
Blower Motor and Wheel Maintenance................................3-4
Cleaning Burners ...................................................................4-5
Cleaning Heat Exchangers ....................................................5-7
Primary Heat Exchangers ................................................5-7
Secondary Heat Exchangers ................................................7
Flushing Collector Box and Drainage System ........................7
Servicing Hot Surface Ignitor ...............................................7-8
Electrical Controls and Wiring .............................................8-9
Troubleshooting ...................................................................9-10
Checking Heat Tape Operation (If Applicable) ....................10
Winterizing ........................................................................10-11
WIRING DIAGRAM ...................................................................12
SERVICE LABEL .......................................................................13
TROUBLESHOOTING GUIDE ............................................14-15
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, including NFPA 54/ANSI Z223.1-1996,
National Fuel Gas Code and ANSI/NFPA 90B, Installation Stan-
dards, Warm Air Heating and Air Conditioning Systems. In
Canada, refer to the current edition of the National Standard of
Canada CAN/CGA-B-149. Wear safety glasses and work gloves.
Have a 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 unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and 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 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.
A93040
®
ama
CANADIAN GAS ASSOCIATION
A P P R O V E D
R
As an ENERGY STAR
SM
Partner, Carrier Corporation
has determined that this prod-
uct
meets
the
ENERGY
STAR guidelines for energy
efficiency.
A93278
CERTIFICATION OF MANUFACTURING SITE
Fig. 1—Multipoise Furnace in Upflow Orientation
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. 565-879
Printed in U.S.A.
Form 58MCA-4SM
Pg 1
11-96
Replaces: 58MCA-3SM
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Summary
The ability to properly perform maintenance on this equip-ment requires certain expertise, mechanical skills, tools, andequipment. If you do not possess these, do not attempt toperform any maintenance on this equipment other than thoseprocedures recommended in the User’s Manual. FAILURETO FOLLOW THI...
Step 1—Cleaning and/or Replacing Air Filter The air filter arrangement may vary depending on the applicationor orientation. Never operate unit without a filter or with the blower accesspanel removed. Failure to follow this warning could result ina fire or personal injury. To clean or replace the fil...
11. Reinstall condensate trap and tubing if previously removed. a. Reinstall condensate trap in hole in blower shelf. b. Connect condensate trap drain tubes. See Fig. 8 or tubing diagram on main furnace door for proper tube location. (1.) Connect 1 tube (blue or blue and white striped) from collecto...
