Carrier 58EFB Guide

OFF

USER’S INFORMATION MANUAL FOR THE OPERATION

AND MAINTENANCE OF YOUR NEW GAS-FIRED FURNACE

NOTE TO INSTALLER:

THIS MANUAL MUST BE

LEFT WITH THE

EQUIPMENT USER.

HORIZONTAL INDUCED-COMBUSTION 58EFB

GAS FURNACE

— Do not store or use gasoline or other flam-

mable 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.

• 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: If the information in this manual

is not followed exactly, a ﬁre or explosion may

result causing property damage, personal in-

jury or loss of life.

OFF

WELCOMETO A NEW GENERATION

OF COMFORT

Congratulations!Yournew80%* efﬁcientgasfurnaceis asound

investment which will reward you and your family with years of

“warm memories” winter after winter.

Not only is your new furnace energy efﬁcient, it is also one of

the most reliable. Spend just a few minutes with this booklet to

learn about the operation of your new furnace—and the small

amount of maintenance it takes to keep it operating at peak efﬁ-

ciency. Years went into the development of your new furnace.

Take a little time now to assure its most efﬁcient operation for

years to come.

* The output capacity and any representations of efﬁciency for this furnace are based on standard Depart-

ment of Energy test procedures.

INSTALLATION DATA

Date Installed

Dealer Name

Address

City

State Zip

Telephone

FURNACE

Product No.

Model No.

Serial No.

SPLIT-SYSTEM

OUTDOOR UNIT:

Product No.

Model No.

Serial No.

INDOOR COIL:

Product No.

Model No.

Serial No.

MODEL 58EFB HORIZONTAL FURNACE

HORIZONTAL FURNACE COMPONENTS

Primary serpentine heat exchanger. Stretches fuel dollars

with the S-shaped heat flow design. Solid construction of

corrosion-resistant aluminized steel means reliability.

Burner assembly (inside). Operates with energy-saving

pilot, inshot burners, and hot surface igniter for safe,

dependable heating.

Gas valve — ignition module assembly. Safe, efficient.

Features 2 separate gas shutoff valves and integrated ig-

nition control.

Heavy-duty blower. Circulates air, scrubbing the heat ex-

changers to transfer heat into the home.

Air filter and wire filter retainer (optional).

Inducer motor. Pulls hot flue gases through the heat ex-

changers, maintaining negative pressure for added safety.

Vent outlet. Carries vent gases from the home.

Limit switch. Shuts furnace down in the event of an over-

heating condition.

Pressure switch. Ensures adequate flow of flue products

through furnace and out vent system.

Control center.

MODEL 58EFB HORIZONTAL FURNACE

(Unit Shown In Horizontal Left Configuration)



OFF

IMPORTANT FACTS

Your furnace must have adequate airﬂow for efﬁcient combus-

tion and safe ventilation. Do not enclose it in an airtight room or

“seal” it behind solid doors.

To minimize the possibility of serious personal injury, ﬁre, dam-

age to your furnace, or improper operation,

carefully follow

these safety rules:

•

Keep the area around your furnace free of combustible mate-

rials, 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 fresh air to the unit.

•

A furnace installed in an attic or other insulated space must be

kept free and clear of insulating material. Examine the furnace

area when installing the furnace or adding more insulation.

Some materials may be combustible.

NOTE:

Do not use this furnace if any part has been under water.

Immediatelycalla qualiﬁed service techniciantoinspectthefur-

nace and to replace any part of the control system and any gas

control which has been under water.

NOTE:

The qualiﬁed installer or agency must use only factory-

authorized replacement parts, kits, and accessories when modi-

fying this product.

If the furnace is left unattended for an extended period of time,

have it checked periodically for proper operation. This precau-

tion will prevent problems associated with NO HEAT, such as

frozenwaterpipes, etc.See “BeforeYouRequesta ServiceCall”

section in this manual.

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 functions

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

.Whenyousee this symbolon the furnaceand in instructions

or manuals, be alert to the potential for personal injury.

Understand the signal words DANGER,WARNING, and CAU-

TION.Thesewordsareusedwiththesafety-alert symbol.DAN-

GER 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

would

result in minor

personal injury or product and property damage.

STARTINGYOUR FURNACE

Insteadof acontinuously burningpilot ﬂamewhich wastesvalu-

able energy, your furnace uses an automatic, hot surface ignition

system to light the pilot each time the thermostat starts your fur-

nace.

Follow these important safeguards:

•

Never attempt to light the pilot manually with a match or

other source of ﬂame.

•

Read and follow the operating instructions on the furnace, es-

pecially the item that reads as follows:

Wait 5 minutes to clear out any gas. Then smell for gas, in-

cluding near the ﬂoor. If you smell gas,

STOP!

Follow “B” in

thesafety information above onthis furnace label. If you don’t

smell gas, go to the next step.

•

If a suspected malfunction occurs with your gas control sys-

tem, such as the burners not lighting when they should, refer to

the shutdown procedures on the furnace or in the next section to

turn off your system, then call your dealer as soon as possible.

•

CHECK AIR FILTER:

Before attempting to start your fur-

nace, be sure the furnace ﬁlter is clean and in place. (See the

maintenance section of this manual.) Then proceed as follows:

OFF

WARNING

If overheating occurs, or the gas valve fails to shut

off the gas supply, turn off the manual gas valve (see

Fig. 7) to the furnace BEFORE turning off the electri-

cal supply. Failure to follow this warning could result

in a fire or explosion, and personal injury or death.

STEPS FOR STARTINGYOUR FURNACE

1. Set your room thermostat to the lowest temperature setting.

(See Fig. 6.)

2. Close the external manual gas valve. (See Fig. 7.)

3. Turn off the electrical supply to the furnace. (See Fig. 8.)

4. Turn the switch on the gas valve to the OFF position and

wait 5 minutes. (See Fig. 9.)

5. After waiting 5 minutes, turn the switch on the gas valve to

the ON position. (See Fig. 10.)

6. Turn on the electrical supply to the furnace. (See Fig. 11.)

7. Open the external manual gas valve. (See Fig. 12.)

11 12

8. Set the room thermostat to a temperature slightly aboveroom

temperature. This will automatically signal the furnace to

start. The inducer motor will start, the pressure switch will

close, and the hot surface igniter will be energized.

9. The hot surface igniter will light the pilot ﬂame. Once the

pilot ﬂame is sensed, the gas valve permits gas to ﬂow to the

main burners where it is ignited. Hot ﬂames begin to warm

the furnace’s heat exchanger. After a time delay of approx-

imately 30 sec, the furnace blower is switched on.

If the pilot fails to light, the ignitor remains energized, and pilot

gas valve remains open. If this is due to a gas interruption, the

system continues its attempt to light pilot until gas is restored

and unit lights or system is turned off.

10. Set your thermostat to the temperature that satisﬁes your

comfort requirements. SUGGESTION: Setting the thermo-

stat back a few degrees and compensating for the difference

withwarmer clothing can makea big differencein your fuel

consumption on extremely cold days. The few degrees at

the top of your thermostat “comfort level” are the most

costly degrees to obtain.

When room temperature drops below the temperature se-

lected on the thermostat, the furnace will be switched on

automatically. When room temperature reaches the degree

selected on the thermostat, the furnace will be switched off

automatically.

Some thermostats have a fan mode with 2 selections:AUTO

and ON. When set to AUTO, the furnace blower cycles on

and off, controlled by the thermostat. In ON mode, the fur-

nace blower runs continuously except for a 30-sec delay at

the call for heat. This keeps the temperature level in your

home more evenly balanced. It also continuously ﬁlters the

indoor air.

SHUTTING DOWNYOUR FURNACE

Should you ever suspect a malfunction in your furnace, you will

need to turn the furnace off. The following procedures must be

followed:

1. Set your room thermostat to the lowest temperature setting.

(See Fig. 13.)



OFF



2. Close the external manual gas valve. (See Fig. 7.)

3. Turn off the electrical power to your furnace. (See Fig. 14.)

4. Turn the switch on the gas valve to the OFF position. (See

Fig. 15.)

5. If the furnace is being shut down because of a malfunction,

call your dealer as soon as possible.

PERFORMING ROUTINE MAINTENANCE

With proper maintenance and care, your furnace will operate

economically and dependably. Instructions for basic mainte-

nance are found on this and the following pages. However, be-

fore beginning maintenance, follow these safety precautions:

FILTERING OUTTROUBLE

(Optional Accessory)

A dirty ﬁlter will cause excessive stress on the furnace blower

motor and can cause it to overheat and automatically shut down.

The furnace ﬁlter should be checked every 3 or 4 weeks and

cleaned if necessary.

The air ﬁlter is normally located in the blower compartment be-

fore the blower (See Fig. 17.) If the ﬁlter(s) has been installed in

anotherlocation, contact your dealer for instructions.Toinspect,

clean, and/or replace the air ﬁlter(s), follow these steps:

Ifyourfurnace ﬁlterneeds tobereplaced, besureto usethesame

size and type of ﬁlter that was originally supplied. Use the fur-

nace ﬁlter table and compare your furnace size with the proper

ﬁlter size.

HORIZONTAL FURNACE FILTERTABLE

•

REMOVE THE FILTER FOR CLEANINGAS FOLLOWS:

1. Turn off electrical supply to the furnace. (See Fig. 14.)

2. Remove blower access door located at the inlet (return-air)

end of the furnace (4 screws must be removed).

(See Fig. 16.)

3. Bend the formed wire ﬁlter retainer to clear the furnace

ﬂange at 1 side.

4. Pivot the ﬁlter retainer toward the blower. (See Fig. 17.)

5. Remove the ﬁlter from the furnace.

6. Inspect the ﬁlter. If torn, replace it.

7. Wash the ﬁlter (if dirty) in a sink, bathtub, or outside with a

garden hose. Always use cold tap water. A mild liquid de-

tergent may be used if necessary. Spray water through the

ﬁlter in the opposite direction of airﬂow through the cross-

mesh binding side.Allow ﬁlter to dry.

WARNING

Turn off electrical power supply to your furnace be-

fore removing the access doors to service or perform

maintenance. Failure to follow this warning could re-

sult in personal injury or death.

OFF

CAUTION

Although special care has been taken to minimize

sharp edges, be extremely careful when handling

parts or reaching into the furnace.

CAUTION

Never operate your furnace without a filter in place.

Doing so may damage the furnace blower motor. An

accumulation of dust and lint on internal parts of

your furnace can cause a loss of efficiency.

HORIZONTAL

FURNACE INPUT

(BTUH)

FILTER

SIZE

(IN.) FILTER

TYPE

50,000 (1) 13 x 23 x 1/2 Cleanable

75,000 (1) 13 x 23 x 1/2 Cleanable

100,000 (1) 16-1/2 x 23 x 1/2 Cleanable

125,000 (1) 20 x 23 x 1/2 Cleanable

OFF

8. Reinstall the clean ﬁlter with the cross-mesh binding side

facing the furnace blower.

9. Replace blower door, reinstall 4 screws (see Fig. 18), and

turn on electrical power to your furnace.

COMBUSTION AREA ANDVENT SYSTEM

Visually inspect the combustion area and vent system before

each heating season. Make sure that the pipe leading into the

vent is free from any cracks and sags. Also check the vent pipe

on the outside of your home for blockage.

When dirt, soot, or rust is allowed to build up, your furnace can

suffer a loss of efﬁciency and perform improperly. Accumula-

tions on the main burners can result in their ﬁring out of normal

sequence. This delayed ignition will create an alarmingly loud

sound.

To inspect the combustion area and vent system, you will need

a ﬂashlight. Refer to Fig. 2 and proceed as follows:

1. Turn off the electrical supply to your furnace. (See Fig. 14.)

2. Remove burner enclosure front.

Inspect the gas burners for dirt, rust, soot, or scale. (See Fig. 19.)

Then inspect the vent outlet area and vent pipe.

19 20

3. Inspect the vent pipe for sags, holes, cracks, or disconnec-

tions. Any horizontal vent pipe must slope upward, away

from the furnace. If rusty joints or seams, or signs of water

leakage are found, call your dealer for service.

4. Reinstall the burner enclosure front.

5. If your furnace is free of the above conditions, restore elec-

trical power to your furnace. (See Fig. 11.)

6. Start your furnace and observe its operation. Watch the

burner ﬂames to see if they are clear blue, almost transpar-

ent. (See Fig. 20.) If you observe a suspected malfunction,

or the burner ﬂames are not clear blue, call your dealer.

A CHECK-UP CHECKLIST

Your furnace represents an important investment in your fam-

ily’s comfort and your home’s value.To keep it in tip-top shape

and as a preventative to future problems, have a trained service

specialist give your furnace a professional check-up annually.

The following checklist can be used as a guideline to proper

service:

•

Inspect all ﬂue gas passages, burners, heat exchangers, and

inducer assembly.

•

Inspect all combustion and ventilation air passages and open-

ings, including vent pipe terminations outside the structure.

•

Check gas pipes leading to and inside of your furnace for

leaks.

•

Inspect, clean, and lubricate the blower motor and wheel as

required.

NOTE:

If oil ports are provided, refer to the unit Service and

Maintenance Instructions for blower motor oiling information.

The motor must be oiled by a qualiﬁed service technician.

•

Inspect and change or clean air ﬁlter(s) if necessary.

•

Inspect all supply- and return-air ducts for obstructions, air

leaks, and insulation. Remedy any problem when necessary.

•

Inspect electrical wiring, connections, and components for

loose connections.

•

Perform an operational checkout to determine whether your

furnace is working properly and if it requires adjustments.

CAUTION

If your furnace makes an especially loud noise when

the main burners light, shut down your furnace and

call your dealer.

CAUTION

If dirt, rust, soot, or scale accumulations are found,

call your dealer. Do not operate your furnace.



OFF

DANGER

If holes are found in the vent pipe, or if it has become

disconnected, toxic fumes can escape into your

home. DO NOT OPERATE YOUR FURNACE. Call

your dealer for service.

TO OBTAIN INFORMATION ON PARTS: Consult your installing dealer or the classiﬁed section of your local telephone directory under the

“Heating Equipment’’ or “Air Conditioning Contractors & Systems’’ heading for dealer listing by brand name.

Have available the Model No., Series Letter, & Serial No. of your equipment to ensure correct replacement part.

Carrier Corporation 7310 West Morris St. Indianapolis, IN 46231

Manufacturer reserves the right to discontinue, or change at any time, speciﬁcations or designs without notice and without incurring obligations

•

Examine the physical support of the furnace; the support

should be sound with no cracks, sagging, gaps, etc. around the

base.

•

Check the furnace for any obvious signs of deterioration.

•Your servicing dealer offers an economical service agreement

that covers seasonal inspections; ask for details.

BEFOREYOU REQUEST A SERVICE CALL

If your furnace is not operating or not performing properly, you

may save the expense of a service call by checking a few things

yourself before calling for service.

FOR INSUFFICIENTAIRFLOW:

•Check for dirty air ﬁlter(s).

•Check for blocked return-air or supply-air grilles throughout

your home; ensure they are open and unobstructed.

If problem still exists, call your dealer for service.

IF FURNACE FAILS TO OPERATE:

Follow this checklist step by step, advancing to the next 1 only

if furnace fails to start.

•Check thermostat for proper temperature (set above room

temperature).

•Is the thermostat set on HEAT?

•Check fuses and circuit breakers. Is electrical supply on?

•Is the manual shutoff valve in gas supply pipe in open posi-

tion? (Follow start-up procedures if you open gas valve.)

NOTE: Turn off the electrical power supply before continuing

with checklist.

•Is the switch on gas valve in ON position? (Follow start-up

procedures if you must reset knob to ON.)

•Check the manual reset ﬂame rollout switch located on the

burner assembly. (See Fig. 2.) If the furnace has experienced

high temperature conditions, this switch will shut off the fur-

nace. Reset it by pushing the button on the switch. If it trips

again, shut down the furnace and call for service. See “Shutting

DownYour Furnace” section in this manual.

•Check for obstructions around the vent termination.

If your furnace still fails to operate, call your service represen-

tative.

Foryour convenience,record the product and serial numbers on

the form on page 2. Should you ever require service, you will

have ready access to the information needed by your service

representative.

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