Carrier COMFORTLINK 48A3 User Manual download pdf

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

Catalog No. 04-53480052-01 Printed in U.S.A. Form 48A-5SO Pg 1 3-08 Replaces: 48A-3SO

Book 1

Ta b 1 a

User’s Information Manual

NOTE TO INSTALLER

This manual should be left with the equipment owner.

Your combination heating/cooling unit is equipped with

direct spark ignition and induced draft power combustion

blower.

TO LIGHT UNIT

See Fig. 1 and 2 for location of gas valve. Refer to Fig. 3

while performing the following steps.

1. Disable unit operation by using the scrolling marquee.

The scrolling marquee is located in the control box at the

compressor end of the unit.

a. Push the key unit a blank display screen

is shown.

b. Push the key until the SERVICE TEST LED is

lit.

c. Push the key. The display will show

STOP.

NOTE: Items in the Configuration and Service

Test modes are password protected. The display

will flash PASS and WORD when required. Use

the and arrow keys to enter the 4 digits of

the password. The default password is 1111.

d. Push the key again. The NO/YES display

will flash.

e. Push the or key to toggle the display to

YES and then push . The unit will be

locked off from heating, cooling or any operation.

The controls will still function and the display will

still operate.

2. Close the field-installed manual gas shutoff valve.

3. Turn off the electrical power to the unit using the optional

disconnect or the field-installed disconnect and lock off

using proper lockout and tag-out procedures.

4. Remove the gas section panels.

5. Move the switch on the gas valve to the OFF position and

wait 5 minutes.

NOTE: If this is the first installation of the unit, the gas

flue hoods must be installed before operating unit. These

must be installed for the unit to run properly.

WARNING: If the information in this

manual is not followed exactly, a fire or

explosion may result causing property

damage, personal injury or loss of life.

— 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.

• Immediately call your gas supplier

from a neighbor’s phone. Follow the

gas supplier’s instructions.

• If you cannot reach your gas sup-

plier, call the fire department.

— Installation and service must be per-

formed by a qualified installer, service

agency or the gas supplier.

WARNING

Improper installation, adjustment, alteration, ser-

vice or maintenance can cause injury or property

damage. Refer to this manual. For assistance or

additional information consult a qualified installer,

service agency, or the gas supplier.

WARNING

Before performing recommended maintenance, be sure

main power switch to unit is turned off and lockout tag is

installed. Electrical shock could cause personal injury.

WARNING

Burners will light automatically. Do not attempt to light by

hand; personal injury may result.

DANGER

1. Do not turn off the electrical power to unit without

first turning off the gas supply.

2. Before attempting to start the gas heating section,

familiarize yourself with all the procedures that must

be followed.

3. Never attempt to manually light the burners on the

unit with a match, lighter, or any other flame. If the

electric sparking device fails to light the burners, refer

to the shutdown procedures, then call your dealer as

soon as possible.

If you do not follow these instructions exactly, a fire or

explosion may result, causing property damage, injury, or

loss of life.

ESCAPE

ENTER

48A2,A3,A4,A5020-060

Single-Package Rooftop

Gas Heating/Electric Cooling Units

with COMFORTLINK™ Controls and Scroll Compressors

1 2 3 4 5 6 7 8

Summary of Contents

Page 1 - User’s Information Manual

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

Page 2 - A48-8367

2GAS HEATSECTION(PANEL REMOVED)GAS VALVEFig. 1 — Typical Gas Section Location (48A3027 Shown)Fig. 2 — Typical Gas Valve Location (48A2,A3,A4,A5020-050

Page 3

3STEP 1Fig. 3 — To Light UnitSTEP 5STEP 4STEP 3STEP 2STEP 7STEP 6STEP 10STEP 8STEP 9Run StatusService TestTemperaturePressuresSetpointsInputsOutputsCo

Page 4

46. Move the switch on the gas valve to the ON position.7. Replace the gas section access panels.8. Turn on the electrical supply to the units.9. Open

Page 5

5STEP 1Fig. 4 — To Shut Unit OffSTEP 5STEP 4STEP 3STEP 2STEP 6Run StatusService TestTemperaturePressuresSetpointsInputsOutputsConfigurationTime ClockO

Page 6

6Air Filter(s) — Air filter(s) should be checked monthlyand changed when necessary. Units may have either 2-in. or4-in. thick filters. For units with

Page 7

76. Observe unit heating operation. Watch the burner flameto see if it is bright blue. If you observe a suspected mal-function or if the flame is not

Page 8 - Ta b 1 a

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

Related models: COMFORTLINK 48A2

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Carrier COMFORTLINK 48A3 User Manual

Browse online or download User Manual for Conditioners Carrier COMFORTLINK 48A3. Carrier COMFORTLINK 48A3 User Manual

Summary of Contents

Related models: COMFORTLINK 48A2

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