Carrier 58MCA Service And Maintenance Instructions

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58MCA, 58MXA, 58MVP
Deluxe Multipoise Gas-Fired
Condensing Furnaces
Service and Maintenance Instructions
For Sizes 040—120, Series 111
NOTE: Read the entire instruction manual before performing any
service or maintenance.
Index Page
SAFETY CONSIDERATIONS..................................................1-2
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE...........................................................................2
GENERAL......................................................................................2
CARE AND MAINTENANCE................................................2-13
Clean and/or Replace Air Filter............................................2-3
Blower Motor and Wheel Maintenance................................3-4
Clean Burners ........................................................................4-5
Clean Heat Exchangers .........................................................5-8
Primary Heat Exchangers ................................................5-6
Secondary Heat Exchangers................................................6
Flush Collector Box and Drainage System..............................6
Service Hot Surface Ignitor......................................................6
Electrical Controls and Wiring .............................................6-9
Troubleshooting...................................................................9-12
Check Heat Tape Operation (If Applicable)..........................12
Winterizing..............................................................................13
WIRING DIAGRAM ......................................................14 and 20
Fixed Capacity ........................................................................14
Variable Capacity....................................................................20
TROUBLESHOOTING..........................................................15-19
Fixed Capacity...................................................................15-17
Variable-Capacity Service Label ......................................18-19
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 Z223.1-1992,
National Fuel Gas Code. 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.
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. FAILURE
TO FOLLOW THIS WARNING COULD RESULT IN
POSSIBLE DAMAGE TO THIS EQUIPMENT, SERIOUS
PERSONAL INJURY, OR DEATH.
A93040
Fig. 1—Multipoise Furnace in Upflow Orientation
A93007
®
ama
CANADIAN GAS ASSOCIATION
A P P R O VED
R
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. 565-904 Printed in U.S.A. Form 58M-2SM Pg 1 6-94 Replaces: 58M-1SM