50PG03---07

Single Package Rooftop Units

Electric Cooling with PURONR (R---410A) Refrigerant and COMFORTLinkt Controls

Installation Instructions

IMPORTANT: This installation instruction contains basic unit installation information including installation of field control devices. For information on unit start-up, service, and operation, refer to the unit Controls, Start- Up, Operation, Service, and Troubleshooting Instructions also enclosed in the unit literature packet.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . . . . . . 1 INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 1 - Provide unit Support . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 2 - Rig and Place Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Step 3 - Field Fabricate Ductwork . . . . . . . . . . . . . . . . . . . . . . 7 Step 4 - Make Unit Duct Connections . . . . . . . . . . . . . . . . . . . 7

Step 5 - Install External Trap for Condensate Drain

7

Step 6 - Make Electrical Connections . . . . . . . . . . . . . . . . . . . 8

Step 7 - Install Outdoor Air Hoods (Units With

Economizer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Step 8 - Install All Accessories . . . . . . . . . . . . . . . . . . . . . . . 22

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment.

Untrained personnel can perform the basic maintenance functions of cleaning coils and filters and replacing filters. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work gloves.

Recognize safety information. This is the safety-alert symbol . When you see this symbol on the unit 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

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal injury or death.

Before performing service or maintenance operations on unit, turn off main power switch to unit and install lockout tag.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Puron (R-410a) refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puron refrigerant equipment.

!WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal injury, death and/or property damage.

1.Improper installation, adjustment, alteration, service, or maintenance can cause property damage, personal injury, or loss of life. Refer to the User’s Information Manual provided with this unit for more details.

2.Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance.

IMPORTANT: Units have high ambient operating limits. If limits are exceeded, the units will automatically lock the compressor out of operation. Manual reset will be required to restart the compressor.

Page 1 Page 2
Page 1
Image 1
Carrier 50PG03-07 installation instructions Installation Instructions
Page 1 Page 2

50PG03-07 specifications

The Carrier 50PG03-07 is a cutting-edge rooftop unit designed to provide exceptional heating and cooling capabilities for commercial spaces. Known for its durability and efficiency, this model is part of Carrier's renowned line of packaged rooftop units, combining advanced technologies with a user-friendly design.

One of the standout features of the 50PG03-07 is its energy efficiency. This unit is equipped with a high-efficiency compressor that maximizes performance while minimizing energy consumption. The unit often boasts a high SEER (Seasonal Energy Efficiency Ratio) rating, making it an environmentally friendly choice for businesses looking to reduce their operating costs and carbon footprint.

The 50PG03-07 incorporates advanced controls, including a microprocessor-based control system that allows for precise temperature management and monitoring. This system not only enhances user comfort but also provides diagnostic capabilities, ensuring the unit operates at peak performance and identifying any potential issues early on.

In terms of design, the Carrier 50PG03-07 features a compact and robust structure that is built to withstand various weather conditions, ensuring longevity and reliability. The unit’s easy access panels simplify maintenance, allowing technicians to perform routine checks and repairs without cumbersome disassembly.

The air distribution system of the 50PG03-07 is engineered for optimal airflow, enhancing comfort across different areas of a building. It features multiple options for air handling, including variable air volume controls, which allows for customized air delivery to suit specific space requirements.

Noise reduction technology is also a priority in this model. The unit is designed to operate quietly, minimizing disruptions in office environments, retail settings, or other commercial spaces. This ensures that occupants can focus on their tasks without being disturbed by mechanical sounds.

Furthermore, the Carrier 50PG03-07 is adaptable with various accessories that can enhance its functionality, such as economizers for improved ventilation and humidity control. By integrating these components, businesses can create an efficient and effective HVAC system tailored to their specific needs.

Finally, the Carrier 50PG03-07 meets stringent industry standards for safety and performance, providing users with peace of mind. With its blend of innovative technology, energy efficiency, and construction resilience, the 50PG03-07 remains a popular choice for businesses seeking reliable climate control solutions.
Top Page Image Contents