Carrier 48PG03---16 specifications What to do if YOU Smell GAS, Contents

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48PG03-16 Gas Heating/Electric Cooling Units with PURON® (R-410A) Refrigerant

User’s Information Manual

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, per- sonal 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, 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.

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 with ComfortLink™ Control) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5

TO SHUT UNIT OFF (Units with Electro-Mechanical Control). . . . . . . . . . . . . . . . . . . . . . . 5

TO SHUT UNIT OFF (Units with ComfortLink 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 ComfortLink Control) . . . . . . 8 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

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 third- party 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 con- trol instructions for procedures to ensure complete unit shut off.

ComfortLink Control — These units have a factory- 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 temper- ature 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.

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

Book

1

4

PC 111

Catalog No. 04-53480006-01

Printed in U.S.A.

Form 48PG-5SO

Pg 1

8-05

Replaces: 48PG-4SO

Tab

1a

6a

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents What to do if YOU Smell GAS ContentsDetermine Type of Unit Control Units with Electro-Mechanical Control To Light UnitMain To Light Unit Units with ComfortLink Control To Shut Unit OFF To Shut Unit Off Units with Electro-Mechanical Control To Shut Unit Off Units with ComfortLink Control Maintaining Your Unit Routine Maintenance and Care For the Equipment OwnerCondenser Fan Case of Trouble Regular Dealer MaintenancePage Copyright 2005 Carrier Corporation

48PG03---16 specifications

The Carrier 48PG03---16 is a standout model in the realm of commercial rooftop air conditioning units, offering innovative technology and exceptional performance for a variety of applications. Designed with rigorous industry standards in mind, this unit combines efficiency, durability, and advanced features, making it a popular choice for both small and medium-sized commercial buildings.

One of the main features of the 48PG03---16 is its impressive cooling capacity, which allows it to effectively regulate indoor temperatures even in the hottest climates. The unit boasts a nominal cooling capacity of 3 tons, making it suitable for spaces that require consistent cooling throughout the hot months. Its effective cooling is complemented by an energy-efficient design that uses advanced refrigeration technology to maximize performance while minimizing energy consumption.

This Carrier model is equipped with a high-efficiency scroll compressor, which contributes to its reliability and overall low operational noise. The use of scroll compression technology ensures smooth operation and reduces the risk of mechanical failure, making this unit a long-term investment for building owners. Additionally, the 48PG03---16 features a robust heat exchanger designed to optimize heat transfer efficiency and ensure reliable performance across a wide range of outdoor conditions.

In terms of controls and management, the Carrier 48PG03---16 allows for advanced programmability, facilitating better temperature control and energy management. The unit can be easily integrated with smart building technologies, enabling users to monitor and adjust settings remotely for enhanced convenience and efficiency.

Durability is another hallmark of the Carrier 48PG03---16. Constructed with weather-resistant materials and equipped with a protective cover for critical components, this unit can withstand various environmental factors, including moisture and debris. Its compact design also makes it an ideal fit for rooftop installations, saving valuable ground space.

In summary, the Carrier 48PG03---16 embodies a blend of performance, efficiency, and durability tailored for commercial applications. With its advanced technologies, user-friendly controls, and robust construction, it not only meets but exceeds the expectations of building owners and facility managers looking for a reliable HVAC solution. Whether for retail spaces, office buildings, or larger facilities, the Carrier 48PG03---16 remains a top contender in commercial air conditioning.
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