Carrier 48PG03-16 User Manual

Gas Heating/Electric Cooling Units

with PURON® (R-410A) Refrigerant

User’s Information Manual

48PG03-16

NOTE TO INSTALLER:

This manual should be left with the equipment owner.

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 supplier,
call the fire department.

— Installation and service must be per-

formed by a qualified installer, service
agency or the gas supplier.

Improper installation, adjustment, alteration, ser­vice 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.

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.

Your combination heating/cooling unit is equipped with di-

rect spark ignition and induced draft power combustion blower.

Burners will light automatically. Do not attempt to light by
hand; personal injury may result.

CONTENTS

Page

DETERMINE TYPE OF UNIT CONTROL ..............1

TO LIGHT UNIT (Units with Electro-Mechanical

Control) ...........................................2

TO LIGHT UNIT (Units

Control) .........................................2-5

TO SHUT UNIT OFF (Units with

Electro-Mechanical Control).......................5

TO SHUT UNIT OFF (Units with

Control) .........................................5-8

MAINTAINING YOUR UNIT ...........................8

ROUTINE MAINTENANCE AND CARE FOR

THE EQUIPMENT OWNER....................... 8,9

Air Filter(s) ..........................................8

Alarm Status (Units with

Integrated Gas Controller (IGC) .....................9

Combustion Area and Vent System .................9

Heat Exchanger .....................................9

Evaporator, Condenser, and

Combustion Fan Motors ...........................9

Indoor Fan, Belt, and Pulleys ........................9

Indoor Fan Shaft Bearings (Sizes 03-14).............9

Indoor Fan Shaft Bearings (Size 16) .................9

Refrigerant Circuits .................................9

Evaporator and Condenser Coils ....................9

Condensate Drain ...................................9

Compressors........................................9

Condenser Fan......................................9

Electrical Controls and Wiring.......................9

Unit Panels..........................................9

REGULAR DEALER MAINTENANCE................10

BEFORE YOU CALL FOR SERVICE CHECK FOR

SEVERAL EASILY SOLVED PROBLEMS..........10

IN CASE OF TROUBLE .............................10

with Comfort

Comfort

Comfort

Link Control) ......8

Link™

Link

DETERMINE TYPE OF UNIT CONTROL

The procedures used to light or shut off the unit depend on
the type of unit control. This section will help determine the
control type of the unit.

Electro-Mechanical Control — These units may be

controlled directly by a thermostat, or indirectly by a third­party control that connects to the thermostat inputs. For direct
thermostat control, use the Electro-Mechanical Control
procedures in this book. For units with third-party controls
connected to the thermostat inputs, refer to the third-party con­trol instructions for procedures to ensure complete unit shut off.

Comfort

installed Carrier ComfortLink control. A Scrolling Marquee
display is located on the front of the unit control box behind the
control box and compressor access door. These units may be
controlled directly by a thermostat, directly by a space temper­ature sensor, or indirectly through other Carrier Comfort
Network® (CCN) communication devices. To ensure complete
unit shut off, use the ComfortLink Control procedures in this
book.

Link Control — These units have a factory-

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

Book 1 4
Ta b 1 a 6 a

PC 111 Catalog No. 04-53480006-01 Printed in U.S.A. Form 48PG-5SO Pg 1 8-05 Replaces: 48PG-4SO

TO LIGHT UNIT

(Units with Electro-Mechanical Control)

Step 11 — Set the temperature selector on room thermostat

to desired setting.

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.

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

proceeding with the following steps.

Step 1 — Set room thermostat to the lowest temperature

setting and set SYSTEM switch to OFF position.

Step 2 — Close the shutoff valve on the gas supply piping.
Step 3 — Turn off the electrical supply to the unit and

install lockout tag.

Step 4 — Open the heat section access panel.
Step 5 — Move ON/OFF switch on the internal main gas

valve to the OFF position and wait 5 minutes.

Step 6 — Move ON/OFF switch on internal main gas valve

to ON position.

Step 7 — Close the heat section access panel.
Step 8 — Remove lockout tag and turn on the electrical

supply to unit.

Step 9 — Open the shutoff valve on the gas supply piping.
Step 10 — Set room thermostat selector slightly above

room temperature and set system switch to HEAT position to
start the unit. The induced-draft combustion air fan will start.
Main burners light within 30 seconds. Indoor blower will start
within 60 to 90 seconds of main gas ignition.

If the main burners fail to light, or the blower fails to come
on, shut down gas heating section and call your dealer for
service. Failure to follow these requirements could result in
serious personal injury.

TO LIGHT UNIT

(Units With

Comfort

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.

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

proceeding with the following steps.

Link™ Control)

Step 1 — Turn off the unit by using the Scrolling Marquee

to put the unit into Service Test mode. The Scrolling Marquee
is located on the front of the unit control box behind the control
box and compressor access door. Thermostat inputs and remote
network commands are ignored when Service Test mode is
ON.

a. A password may be required to change Service Test

values depending on previous settings configured in the
unit. Default password is “1111.”

b. Press the key until a blank screen is shown.

c. Use the arrow keys to scroll the red LED on the display

to the “Service Test” position and press .

d. The control will display the Field Service Test Mode

(TEST) setting. Press once to select the TEST
setting for configuration. Press again for
“OFF” to begin flashing.

e. Use the arrow keys to change the configuration from

“OFF” to “ON,” then press and to
save the setting.

ESCAPE

ENTER

ENTER

ENTER

ENTER

ESCAPE

HEAT EXCHANGER
SECTION

MAIN BURNER SECTION

Fig. 1 — Typical Gas Heating Section

INDUCED
DRAFT
MOTOR

COMBUSTION
FAN HOUSING

MAIN GAS
VALV E

Step 2 — Close the shutoff valve on the gas supply piping.

Step 3 — Turn off the electrical supply to the unit and

install lockout tag.

Step 4 — Open the heat section access panel.

Step 5 — Move ON/OFF switch on the internal gas valve to

the OFF position and wait 5 minutes.

Step 6 — Move ON/OFF switch on internal gas valve to

ON position.

Step 7 — Close the heat section access panel.

2

STEP 1

MAIN

OFF

STEP 3STEP 2

ON

LOCK-OUT

TAG

W

E

O

R

C

L

S

E

C

A

R

L

P

M

C

HI

E

ON

F

F

O

C

STEP 5STEP 4

R

C

S

E

M

HI

ON

F

F

O

STEP 6

W

E

O

L

C

A

R

L

P

E

STEP 7

STEP 8

STEP 10

Fig. 2 — To Light Unit (Units with Electro-Mechanical Control)

3

STEP 9

MODE

Run Status

Service Test

Temperature

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

Alarm Status

ESCAPE

STEP 1

ENTER

MAIN

OFF

STEP 3STEP 2

ON

LOCK-OUT

TAG

W

E

O

R

C

L

S

E

C

A

R

L

P

M

C

HI

E

ON

F

F

O

C

STEP 5STEP 4

R

C

S

E

M

HI

ON

F

F

O

STEP 6

W

E

O

L

C

A

R

L

P

E

STEP 7

MODE

Run Status

Service Test

Temperature

Pressures

Setpoints

Inputs

Outputs

Configuration

Time Clock

Operating Modes

Alarms

Alarm Status

ESCAPE

ENTER

STEP 10

Fig. 3 — To Light Unit (Units with

4

STEP 8

Comfort

STEP 9

Link™ Control)