48PD05,06 48PG03---16

Gas Heating/Electric Cooling Rooftop Units with PURONR (R---410A) Refrigerant

User’s Information Manual

NOTE TO INSTALLER:

This manual should be left with the equipment owner.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 DETERMINE TYPE OF UNIT CONTROL . . . . . . . . . . . . . . . 2 TO LIGHT UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Units With Electro-Mechanical Control . . . . . . . . . . . . . . . . . 2 Units With ComfortLinkt Control . . . . . . . . . . . . . . . . . . . . . 3 TO SHUT UNIT OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Units With Electro-Mechanical Control . . . . . . . . . . . . . . . . . 6 Units With ComfortLinkt Control . . . . . . . . . . . . . . . . . . . . . 6 MAINTAINING YOUR UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . 9

ROUTINE MAINTENANCE AND CARE FOR THE EQUIPMENT OWNER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Air Filter(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Alarm Status (Units with ComfortLink Control) . . . . . . . . . . 10 Integrated Gas Controller (IGC) . . . . . . . . . . . . . . . . . . . . . . . 10 Combustion Area and Vent System . . . . . . . . . . . . . . . . . . . . 10 Heat Exchanger . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Evaporator, Condenser and Combustion Fan Motors . . . . . . . 10 Indoor Fan, Belt and Pulleys . . . . . . . . . . . . . . . . . . . . . . . . . 10 Indoor Fan Shaft Bearings (Sizes 03-14) . . . . . . . . . . . . . . . . 10 Indoor Fan Shaft Bearings (Size 16) . . . . . . . . . . . . . . . . . . . 10 Refrigerant Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Evaporator and Condenser Coils . . . . . . . . . . . . . . . . . . . . . . 10 Condensate Drain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Compressors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Condenser Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Electrical Controls and Wiring . . . . . . . . . . . . . . . . . . . . . . . . 11 Unit Panels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

REGULAR DEALER MAINTENANCE . . . . . . . . . . . . . . . . 11

BEFORE YOU CALL FOR SERVICE CHECK FOR

SEVERAL EASILY SOLVED PROBLEMS . . . . . . . . . . . . . . 11 If insufficient heating or cooling is suspected . . . . . . . . . . . . . 11 If your unit is not operating at all . . . . . . . . . . . . . . . . . . . . . . 11 IN CASE OF TROUBLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause fire, electrical shock, or other conditions which may cause personal injury or property damage. Consult a qualified installer, service agency or your distributor or branch for information or assistance. The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual instructions packaged with the kits or accessories when installing.

Follow all safety codes. Wear safety glasses and work gloves. Have fire extinguishers available.

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, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

!WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death and/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:

1.DO NOT try to light any appliance.

2.DO NOT touch any electrical switch or use any phone in your building.

3.Leave the building immediately.

3.IMMEDIATELY call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

4.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.

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Carrier 06, 48PD05 manual Table of Contents, Safety Considerations
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48PD05, 06 specifications

The Carrier 48PD05 and 48PD06 are highly efficient packaged rooftop units designed specifically for commercial applications. They are known for their reliability, advanced technologies, and exceptional performance in diverse weather conditions. Both units leverage Carrier's decades of experience in HVAC technology to deliver optimal indoor comfort with minimal energy consumption.

One of the standout features of the 48PD series is their advanced cooling capabilities. These units utilize scroll compressors, which are renowned for their efficiency and quiet operation. This results in reduced noise levels, making them suitable for a variety of commercial environments, including restaurants, offices, and retail spaces. The units also come equipped with multiple cooling capacities, allowing for precise matching to the specific thermal requirements of the building.

Energy efficiency is a key characteristic of the 48PD05 and 48PD06. Both units feature high SEER (Seasonal Energy Efficiency Ratio) ratings, ensuring that they consume less electricity while delivering superior cooling performance. The use of microchannel coil technology further enhances efficiency. This innovation reduces refrigerant charge requirements and improves heat transfer, allowing the units to operate effectively in various climatic conditions.

In addition to cooling, these units also provide heating functionality, making them an all-in-one solution for year-round climate control. They incorporate electric heating elements as well as optional gas heat capabilities, providing flexibility based on user preference and fuel availability. This versatility ensures that facilities can maintain comfort regardless of seasonal changes.

The Carrier 48PD series is also designed with ease of installation and maintenance in mind. The compact rooftop design allows for straightforward placement on a building’s roof, reducing installation costs and time. Furthermore, serviceability is enhanced through features like removable access panels, which provide easy access to critical components.

Safety and reliability are paramount in Carrier's design philosophy. Both units include a variety of safety features such as high-pressure and low-pressure switches, ensuring the longevity and protection of the system. Additionally, the intelligent controls available with the 48PD models facilitate precise temperature management, enhancing occupant comfort while optimizing energy use.

In conclusion, the Carrier 48PD05 and 48PD06 packaged rooftop units stand out due to their efficient cooling and heating capabilities, innovative technologies, and user-friendly design. Their combination of performance, energy efficiency, and advanced features makes them a reliable choice for commercial heating and cooling needs, assuring users of comfort and cost-effectiveness throughout their operation.
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