Carrier 58MSA12012120, 58MSA10012120, 58MSA08012116, 58MSA08012112, 58MSA06012112 Owner’s Manual

NOTE TO INSTALLER:
This manual must be left with the equipment

user.

WARNING:

FIRE OR EXPLOSION HAZARD
Failure to fbllow safety warnings exactly could

result in serious injury, death, or property damage.

-- Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any
other appliance.

-- WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use
any phone in your building.

USER: Please read all instructions in

the manual and retain all manuals for
future reference.

• Leave the building immediately.

• Immediately call your gas supplier from a

neighbor's phone. Follow the gas supplier's
instructions.

• If you cannot reach your gas supplier, call the

fire department.

-- Installation and service must be performed by a

qualified installer, service agency or the gas
supplier.

WARNING:

Carbon Monoxide is invisible, odorless, and toxic!
Carrier Corporation recommends a carbon mon-

oxide alarm in your home, even if you do not own
a gas appliance. Locate the carbon monoxide

alarm in the living area of your home and away
from gas appliances and doorways to attached ga-

rages. Folh, w the alarm manufacturer's instruc-
tion included with the alarm.

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Do not use this furnace if any part has been
under water. A flood-damaged furnace is

extremely dangerous. Attempts to use the
furnace can result in fire or explosion. A

qualified service agency should be contacted
to inspect the furnace and to replace all gas

controls, control system parts, electrical
parts that have been wet or the furnace if

deemed necessary.

TABLEOFCONTENTS

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 duling combustion is captured and delivered inside
your home. That is more than a 33%* increase ill 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 fnrnace. 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 fnrnace 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
IJ.S. Department of Energy test precedures.

As an ENERGY STAR®

Partner, Carrier Corpo
ration has determined

that this product meets
the ENERGY STAR®

guidelines for energy
efficiency

/

MODEL 58MSA FURNACE

GENERALFURNACESAFETY

1. Combustible Materials, Gasoline W:arning .................. 1,4

2. Furnace Must be Kept Free and Clear of"Insulating

Material W:arning ......................................... 4

3. Furnace Needs Air Ibr Combustion and Ventilation W:arning...4

4. Starting (Lighting) and Shutting Dos_la the

Furnace PC:arning ....................................... 5_

5. Proper Furnace Shutdown Procedures ....................... 6

6. Flood Damage Warning .................................... 1

7. Fire or Explosion Hazard Warning .......................... 1

8. Carbon Monoxide W:arning ................................. 1

9. Service and Maintenance Electrical Hazard Warning .......... 7

10. Improper Vent W:arning .................................... 8

11. Sharp Edges Caution ...................................... 7

12. No Filter Caution .......................................... 7

13. Filter Rod Modification Caution ............................ 8

1

14. Dirt, Rust, or Accumulation Caution ......................... 8

15. Freeze Damage Caution .................................. 7,9

16. Loud Noise Caution ........................................ 8

17. Antifreeze Caution ......................................... 9

FURNACE COMPONENTS

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Burner sight glass for viewing burner flame.

Burner assembly (inside). Operates with energy-saving
inshot burners, and hot surt_ce igniter t_wsafe,

dependable beating.

Combustion-air intake connection (right or left side).

Redundant gas valve. Safe and efficient. Features l gas
control with 2 internal slmtoff valves.

Junction box for 115-v electrical power supply.

Vent outlet. Uses PVC pipe to carry flue gas frolll the fnr-
nace's combustion system (right or left side).

Secondary condensing heat exchanger (inside). Wrings
out more heat through condensation. Constructed with

polypropylene-laminated steel to ensure durability.

Pressure switch. Ensures adequate flow of flue gas
through furnace and out vent system.

Inducer motor. Pulls hot flue gases through the heat ex-
changers, maintaining negative pressure for added safety.

Condensate &ain connection. Collects moisture con-
densed from burned gases for disposal into home drain

systeln. (Location in fnrnace varies)

Heavy-duty blower. Circulates air across the heat ex-
changers to transfer heat into the home.

6

5

17

8
9

2

MODEL 58MSA FURNACE

(SHOWN IN UPFLOW POSITION)

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Air filter and retainer.

Rollout switch (manual reset) to prevent overtemperature.

PrimaU serpentine heat exchanger (inside). Stretches fnel
dollars with the S-shaped heat-flow design. Solid con-

struction of corrosion-resistant aluminized steel means re-
liability.

3-amp fuse provides electrical and component protection.

Light emitting diode (LED) on fnrnace control board.
Code light isfor diagnosing furnace operation and service
requirelnents.

Furnace Control board.

Blower access panel safety interlock switch.

Transformer (24v) behind furance control board provides
low-voltage power to fnrnace control board and thermo-

stat.

SAFETY CONSIDERATIONS

Recognize safety information. This is the safety-alert sym-
bol z2x. 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. DANGER, WARNING and

CAUTION are used with the safety-alert symbol. DANGER
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

m identify unsafe practices which would result in minor per-
sonal injury or product and prop-erty damage. NOTE is used
to highlight suggestions which will result in enhanced instal-

lation, reliability, or operation.
To minimize the possibility of serious personal injury, fire,

furnace damage, or improper operation; carefully follow
these safety rules:

Your gas furnace uses air adjacent to the furnace for combus-
tion and vents to the outside. Do not enclose it in an airtight

room or seal it behind solid doors. It must have adequate air-
flow for efficient combustion and sate ventilation. The vent

pipe must terminate outside the structure and must not be
obstructed in any way.

many products around the home, such as: water softener
salts, laundry bleaches, detergents, adhesives, paints, var-

nishes, paint strippers, waxes, and plastics.

• Make sure the combustion air for your furnace does not
contain any of these compounds. During remodeling be sure

the combustion air is fresh and uncontaminated. If these
compounds are burned in your furnace, the heat exchangers
may deteriorate.

• A funmce installed in an attic or other insulated space
must be kept tree and clear of insulating material. Examine

the furnace area when the furnace is installed or when
insulation is added. Some insulation materials may be

combustible.
This furnace contains SAFETY DEVICES which must be

MANUALLY RESET. If the furnace is left unattended for
an extended period of time, have it checked periodically for

proper operation. This precaution will prevent problems
associated with no heat, such as frozen water pipes, etc. See
"Before You Request a Service Call" section in this manual.

Fire Hazard! Failure to keep insulation clear of

furnace could result in fire, personal injury/death

or property damage.

• Keep the area around your furnace clear and tree of com-
bustible materials, gasoline, and other flammable liquids and

vapors.

• Do not cover the furnace, store trash or debris near it, or
in any way block the flow of fiesh air to the unit.

• Combustion air must be clean and uncontaminated with
chlorine or fluorine. These compounds are present in

V!l LW-'I-'I [c]

Do not keep combustible materials, gasoline, and
other flammable liquids or vapors around your

furnace. Failure to follow this warning could result

in fire, personal injury/death or property damage.

For proper and safe operation the furnace needs
air for combustion and ventilation. Do not block

or obstruct the openings on the furnace, air
openings to the area in which the furnace is in-

3

stalled, and the space around the furnace. Failure
to follow this warning could result in fire, personal
injury/death or property damage.

BEFORE STARTING YOUR FURNACE

Examine the furnace installation to determine that:

1. All flue gas carrying areas external to the funmce (i.e.
chimney, vent connector) are clear and free of obstruc-

tions.

2. The vent connector is in place, slopes upward and is phys-
ically sound without holes or excessive corrosion.

3. The return-air duct connection(s) is physically sound, is
sealed to the funmce casing, and terminates outside the

space containing the furnace.

4. The physical support of the funmce is sound without sag-
ging cracks, gaps, etc. around the base.

4

5. There are no obvious signs of deterioration of the furnace.

6. The pilot and burner flames are in good adjustment (by
comparison with pictorial sketches or drawings of the

main burner flame and, if applicable, the pilot burner
flame).