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TABLE OF CONTENTS
WELCOME TO A NEW GENERATION OF COMFORT
. . . . . . . 2
GENERAL FURNACE SAFETY
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FURNACE COMPONENTS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
BEFORE STARTING YOUR FURNACE
. . . . . . . . . . . . . . . . . . . . . . . 4
STARTING AND SHUTTING DOWN YOUR FURNACE
. . . . . . . 4
Steps for Starting Your Furnace. . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Shutting Down Your Furnace . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PERFORMING ROUTINE MAINTENANCE
. . . . . . . . . . . . . . . . . . . 6
Filtering Out Trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
COMBUSTION AREA AND VENT SYSTEM
. . . . . . . . . . . . . . . . . . . 8
Heading South for the Winter . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
A CHECK-UP CHECKLIST
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9,10
BEFORE YOU REQUEST A SERVICE CALL
. . . . . . . . . . . . . . . . .10
INSTALLATION DATA
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
WELCOME TO A NEW GENERATION
OF COMFORT
Congratulations! In light of rising energy costs, the 58MXA,
58MCA, 58MTA, and WeatherMaker Infinity, Multipoise, Gas-
Fired Condensing Furnaces are among the soundest investments
today’s homeowner can make.
Your new furnace is truly a triumph of technology in home heat-
ing. A revolutionary design employs 2 heat exchangers to
“squeeze” out the maximum amount of heat from the fuel con-
sumed. In fact, your new furnace is so efficient, over 90%* of the
heat generated during combustion is captured and delivered inside
your home. That is more than a 33%* increase in heating effi-
ciency over conventional furnaces.
These are among the most energy-efficient furnaces you can buy to-
day. They also are among the safest and most dependable. We are
proud of the technological advances incorporated into the design of
these furnaces. With only minimal care, your new furnace will deliver
many years of money-saving home comfort and enjoyment. Spend
just a few minutes with this manual to learn the operation of your new
furnace and the small amount of maintenance it takes to help keep it
operating at peak efficiency year after year.
*The output capacity and any representations of efficiency for this furnace are based on standard
U.S. Department of Energy test procedures.
GENERAL FURNACE SAFETY
1. Combustible Materials, Gasoline Warning
. . . . . . . . . . . . . . . . . 1,4
2. Furnace Must be Kept Free and Clear of Insulating
Material Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
3. Furnace Needs Air for Combustion and Ventilation Warning
. . .4
4. Starting (Lighting) and Shutting Down the
Furnace Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
5. Proper Furnace Shutdown Procedures
. . . . . . . . . . . . . . . . . . . . . . .5
6. Flood Damage Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
7. Fire or Explosion Hazard Warning
. . . . . . . . . . . . . . . . . . . . . . . . . .1
8. Carbon Monoxide Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1
9. Service and Maintenance Electrical Hazard Warning
. . . . . . . . . .7
10. Improper Vent Warning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
11. Sharp Edges Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
12. No Filter Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
13. Filter Rod Modification Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . .9
14. Dirt, Rust, or Accumulation Caution
. . . . . . . . . . . . . . . . . . . . . . . .9
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MODEL 58MVP
VARIABLE-CAPACITY
AND MODEL 58MTA
TWO-STAGE FURNACES
As an ENERGY STAR®
partner, Carrier Corporation
has determined that this
product meets the ENERGY
STAR® guidelines for
energy efficiency.
CERTIFIED
15. Freeze Damage Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7,9
16. Loud Noise Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
17. Antifreeze Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
MODELS 58MXA (SHOWN) AND
58MCA FIXED-CAPACITY FURNACES
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