Carrier 58MSA instruction manual Service and Maintenance Instructions

58MSA 4-Way Multipoise Fixed-Capacity Condensing Gas Furnace

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Service and Maintenance Instructions

For Sizes 040Ð120, Series 110

A93040
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	2-10
Cleaning and/or Replacing Air Filter	3
Blower Motor and Wheel Maintenance	3-4
Cleaning Burners	4-5
Cleaning Heat Exchangers	5-6
Primary Heat Exchangers	5-6
Secondary Heat Exchangers	6
Flushing Collector Box and Drainage System	6-7
Servicing Hot Surface Ignitor	7-8
Electrical Controls and Wiring	8
Troubleshooting	8-10
Checking Heat Tape Operation (If Applicable)	9-10
Winterizing	10
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. In the United States, follow all safety
codes including the National Fuel Gas Code (NFGC) NFPA
54-1996/ANSI Z223.1-1996 and the Installation Standards, Warm

®

ama

CANADIAN GAS ASSOCIATION

A P P R O V E D

R

As an ENERGY STAR®

Partner, Carrier Corporation has determined that this prod- uct meets the ENERGY STAR® guidelines for energy

efficiency.A98306

REGISTERED QUALITY SYSTEM

→Fig. 1ÐMultipoise Furnace in Upflow Orienta- tion

Air Heating and Air Conditioning Systems (NFPA 90B) ANSI/NFPA 90B. In Canada, refer to the CAN/CGA-B149.1- and

.2-M95 National Standard of Canada, Natural Gas and Propane Installation Codes (NSCNGPIC). 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.

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

Book	1	4	PC 101	Catalog No. 535-744	Printed in U.S.A.	Form 58MSA-3SM	Pg 1	5-99	Replaces: 58MSA-2SM
Tab	6a	8a