Carrier 58MVC080-F-10120, 58MVC080-F-10114 Owner’s Manual

Owner's Manual

NOTE TO INSTALLER:

THIS MANUAL MUST BE LEFT WITH THE

EQUIPMENT USER.

USER: PLEASE READ ALL INSTRUCTIONS
IN THE MANUAL AND RETAIN ALL
MANUALS FOR FUTURE REFERENCE.

FIRE OR EXPLOSION HAZARD
Failure to follow warnings could result in 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.

-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.

®

to the Expertg

CARBON MONOXIDE POISONING HAZARD

Failure to follow this warning could result in personal injury

and/or death.

Carbon Monoxide is invisible, odorless, and toxic! Install a
carbon monoxide 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 garages. Follow the alarm
manufacturer's instruction included with the alarm.

A05069

ELECTRICAL OPERATION HAZARD
Failure to follow this warning could result in personal injury,

death, or property damage.
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.

TABLE OF CONTENTS

WELCOME TO A NEW GENERATION OF COMFORT .... 2

FURNACE COMPONENTS ........................... 3

SAFETY CONSIDERATIONS ......................... 4

BEFORE STARTING YOUR FURNACE ................. 5

STARTING YOUR FURNACE ......................... 5

SHUTTING DOWN YOUR FURNACE .................. 7

PERFORMING ROUTINE MAINTENANCE ............. 8

FILTERING OUT TROUBLE .......................... 9

COMBUSTION AREA AND VENT SYSTEM ............ 9

HEADING SOUTH FOR THE WINTER ................ 13

A CHECK-UP CHECKLIST .......................... 14

BEFORE YOU REQUEST A SERVICE CALL ........... 14

INSTALLATION DATA ............................. 15

WELCOME TO TODAY'S GENERATION

OF COMFORT

Congratulations! In light of rising energy costs, a 90+% AFUE
Condensing Gas Furnace from Carrier Corporation is among the

soundest investments today's homeowner can make.
Your new furnace is truly a triumph of technology in home

heating. A revolutionary design employs two (2) heat exchangers
to "squeeze" out the maximum amount of heat from the fuel
consumed. 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 30%* increase in heating
efficiency over conventional furnaces.

This furnace is among the safest, most dependable,
energy-efficient furnaces you can buy today. We are proud of the

technological advances incorporated into the design of this furnace.
With only minimal care, your new furnace will deliver many years

of money-saving home comfort and enioyment. 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.

A05069

EFFICIENCY

CERTIFIED

a

As an ENERGY STAR

Partner, Carrier Corp.
has determined that this

product meets the
ENERGYSTAR®

guidelines for energy
efficiency.

FURNACE COMPONENTS

(Furnace shown in upflow position; may be used in downflow or
horizontal orientation or applications.

17

3

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

2. Burner sight glass for viewing burner flame.

3. Burner assembly (inside), operates with energy-saving, in-
shot burners and hot surface igniter for safe, dependable
heating.

4. Redundant gas valve. Safe and efficient. Features 1 gas con-
trol with 2 internal shutoff valves.

5. Vent outlet, uses PVC pipe to carry flue gas from the fur-
nace's combustion system (right or left side).

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

Single Stage Furnace

15

13

7. Blower access panel safety interlock switch.

8. Air filter (sold separately on some models) and retainer
(location in furnace may vary).

7

19

A08315

9. Condensate drain connection, collects moisture condensed
from burned gases for disposal into home drain system.
(location in furnace varies)

10. Heavy-duty blower, circulates air across the heat ex-
changers to transfer heat into the home.

11. Secondary condensing heat exchanger (inside). Wrings out
more heat through condensation. Constructed with polypro-
pylene-laminated steel to ensure durability.

12. Primary serpentine heat exchanger (inside), stretches fuel
dollars with the S-shaped heat-flow design. Solid construc-

tion of corrosion-resistant aluminized steel means reliabil-
ity.

4

18

6

5

13. Furnace control board.

14. 3-amp fuse provides electrical and component protection.

Two-Stage Furnace

15

14
13

7
19

10

15. Light emitting diode (LED) on furnace control board.
Status code light is for diagnosing furnace operation and

service requirements.

16. Pressure switch(es) ensure adequate flow of flue gas
through furnace and out vent system.

17. Rollout switch (manual reset) to prevent over temperature.

18. Junction box for 115-v electrical power supply. (May be
located on right or left side).

19. Transformer (24v) behind furnace control board provides
low-voltage power to furnace control board and thermostat.

A08316

SAFETY CONSIDERATIONS

Installing and servicing of 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 flmctions such

as cleaning and replacing air filters. All other operations must be
performed by trained service personnel. Observe safety precautions

in this manual, on tags, and on labels attached to the furnace and
other safety precautions that may apply.

Recognize safety information. 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. 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 to identify unsafe practices which
may result in nfinor personal injury or product and property
damage. NOTE is used to highlight suggestions which will result

in enhanced installation, reliability, or operation.
To nfininfize the possibility of serious personal injury, fire, damage

to your furnace, or improper operation, carefully follow these
safety rules which apply to both direct-vent and non-direct vent

applications:

• Your new gas furnace may have been installed in 1 of 2 ways, as
a direct-vent (2-pipe-Fig. 1) application or as a non-direct vent
(l-pipe-Fig. 2) application.

• In a direct-vent (2-pipe) application, your furnace uses air from
outside the home for combustion and vents flue gas to the
outdoors. This type of application will have 2 pipes running
from the furnace to the outdoors. (See Fig. 1.) In this
application, the vent and air-intake pipes nmst ternfinate outside
the structure and nmst not be obstructed in any way. Do not
block or obstruct air openings on furnace or spaces around

furnace.

• In a non-direct vent (1-pipe) application, your furnace uses air
from adjacent to the furnace for combustion and vents flue gas

to the outdoors. This type of application will have only 1 pipe
running from the furnace to the outdoors. (See Fig. 2.) The other

pipe will ternfinate in the same space as the furnace and is the
source of combustion air for your furnace. Therefore, the furnace
must not be enclosed in an airtight room or be sealed behind
solid doors. It must have adequate airflow for efficient

combustion and safe ventilation. Do not obstruct the
combustion-air pipe in any way. The vent pipe nmst ternfinate

outside the structure and must not be obstructed in any way. Do
not block or obstruct air openings or space around furnace.

A05098

Fig. 1 - Exterior Vent Pipes

A05101

Fig. 2 - Interior Combustion - Air Pipe

• Keep the area around your furnace clear and free of combustible
materials, gasoline, and other flammable liquids and vapors.
See Fig. 3.

FIRE OR EXPLOSION HAZARD

Failure to follow warnings could result in personal injury,
death, or property damage.

Keep insulation clear of furnace and maintain clearances

shown on unit clearance label.

A92182

Fig. 3 - NO combustible materials near furnace

• Donotcoverthefurnace,storetrash or debris near it, or in any

way block the flow of fresh air to the unit.

• In addition to the safety rules above, make sure that the
following combustion-air requirements are met for non-direct
vent applications:

• Combustion air nmst be clean and uncontanfinated with chlorine
or fluorine. These compounds are present in many products

around the home, such as: water softener salts, laundry bleaches,
detergents, adhesives, paints, varnishes, 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 uncontanfinated. If these compounds
are burned in your furnace, the heat exchangers may deteriorate.

• A furnace installed in an attic or other insulated space must be
kept free and clear of insulating material. Exanfine the furnace

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

• Should the gas supply fail to shut off or if overheating occurs,
shut off the gas valve to the furnace before shutting off electrical
supply.

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.

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

6. The burner flames are in good adjustment, See Fig. 4 (by
comparison with pictorial sketches or drawings of the main

burner flame.)

A92330

Fig. 4 - Burner Flame Adjustment

STARTING YOUR FURNACE

Instead of a continuously burning pilot flame which wastes
valuable energy, your furnace uses an automatic, hot surface

ignition system to light the burners each time the thermostat signals
the furnace to start.

Follow these important safeguards:

• Never attempt to manually light the burners with a match

or other source of flame. See Fig. 5.

FIRE OR EXPLOSION HAZARD

Failure to follow this warning could result in personal injury,
death, or property damage.

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

UNIT OPERATION HAZARD
Failure to follow this caution may result in internfittent unit

operation.
For proper and safe operation the furnace needs air for

combustion and ventilation. Do not block or obstruct air
openings on the furnace, air opening to the area in which the

furnace is installed, and the space around the furnace.

BEFORE STARTING YOUR FURNACE

Exanfine the furnace installation to deternfine that:

1. All flue gas carrying areas external to the furnace (i.e. china-
ney, vent connector) are clear and free of obstructions.

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

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

space containing the furnace.

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

A92319

Fig. 5 - Do Not Light Burner with Match

• Read and follow the operating instructions on inside of
main furnace door, especially the item that reads as fol-

lows:
"Wait 5 nfinutes to clear out any gas. Then smell for gas,

including near the floor. If you smell gas, STOP! Fol-
low "B" in the safety information on furnace label. If you

don't smell gas, go to the next step."

• If a suspected malfunction occurs with your gas control
system, such as the burners do not light when they

should, refer to the shutdown procedures on inside of
main furnace door, or in the "Shutting Down Your Fur-
nace" section and call your dealer as soon as possible.

FIRE AND EXPLOSION HAZARD

Failure to follow this warning could result in personal iniury,
death or property damage.

Should the gas supply fail to shut off or if overheating occurs,
turn off the manual gas valve to the furnace BEFORE turning
off the electrical supply and install lockout tag.