2
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
. . . . . . . . . . . . . . . . . 6,7
Filtering Out Trouble. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,8
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 58MSA Mul-
tipoise, Condensing Gas Furnace is among the soundest invest-
ments 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, 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.
This furnace is among the most energy-efficient furnaces you can
buy today. It is also among the safest and most dependable. We
are proud of the technological advances incorporated into the de-
sign of this furnace. With only minimal care, your new furnace
will deliver many years of money-saving home comfort and en-
joyment. Spend just a few minutes with this manual to learn the
operation of your new furnace and the small amount of mainte-
nance 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 precedures.
1
MODEL 58MSA FURNACE
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–6
5. Proper Furnace Shutdown Procedures
. . . . . . . . . . . . . . . . . . . . . . .6
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
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
11. Sharp Edges Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
12. No Filter Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
13. Filter Rod Modification Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . .8
14. Dirt, Rust, or Accumulation Caution
. . . . . . . . . . . . . . . . . . . . . . . . .8
15. Freeze Damage Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7,9
16. Loud Noise Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
17. Antifreeze Caution
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
CERTIFIED
As an ENERGY STAR®
Partner, Carrier Corpo-
ration has determined
that this product meets
the ENERGY STAR®
guidelines for energy
efficiency.