58CTS
2-Speed, 2-Stage Induced-Combustion
Deluxe 4-Way Multipoise Furnace
Service and Maintenance Procedures
Size 090, Series 100
NOTE:
Read the entire instruction manual before starting the
installation.
These procedures are for size 88,000 Btuh input unit.
TABLE OF CONTENTS
SAFETY CONSIDERATIONS .....................................................1
INTRODUCTION..........................................................................1
General ......................................................................................1
ELECTROSTATIC DISCHARGE (ESD) PRECAUTIONS
PROCEDURE ................................................................................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...................................................................7
TROUBLESHOOTING .................................................................7
SAFETY CONSIDERATIONS
Installing and servicing heating equipment can be hazardous due to
gas and electrical components.
Only trained and qualified
personnel should install, repair, or service heating equipment.
Untrained personnel can perform basic maintenance functions
such as cleaning and replacing air filters.
Observe precautions in
the literature, on 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
54-1999/ANSI Z223.1-1999. 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 fire extinguisher available during start-up
and adjustment procedures and service calls.
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, CAUTION,
and NOTE. 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 a hazard
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 knowledge, 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.
Label all wires prior to disconnection when servicing con-
trols. Wiring errors can cause improper and dangerous
operation.
INTRODUCTION
Step 1—General
These instructions are written as if the furnace is installed in an
upflow application. An upflow furnace application is where the
blower is located below the combustion and controls section of the
CERTIFIED
®
REGISTERED QUALITY SYSTEM
Fig. 1—Model 58CTS Multipoise
A00353
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. 535-80008
Printed in U.S.A.
Form 58CTS-1SM
Pg 1
11-00
Replaces: New
