Carrier 50GX, 50GS Evaporator Airflow, Liquid Line Strainer, Troubleshooting, START-UP Checklist

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System under pressure. Relieve pressure and recover all refrigerant before system repair or final unit disposal to avoid personal injury or death. Use all service ports and open all flow-control devices, including solenoid valves.

If oil is detected or if low cooling performance is suspected, leak-test all refrigerant tubing using an electronic leak-detector, halide torch, or liquid-soap solution. If a refrigerant leak is detected, refer to Check for Refrigerant Leaks section.

If no refrigerant leaks are found and low cooling performance is suspected, refer to Checking and Adjusting Refrigerant Charge section.

EVAPORATOR AIRFLOW

The heating and/or cooling air-flow does not require checking unless improper performance is suspected. If a problem exists, be sure that all supply- and return-air grilles are open and free from

obstructions, and that the air filter is clean. When necessary, refer to Indoor Airflow and Airflow Adjustments section to check the system airflow.

METERING DEVICE — ACUTROL DEVICE

This metering device is a fixed orifice and is located in the header to the evaporator coil.

LIQUID LINE STRAINER

The liquid line strainer (to protect metering device) is made of wire mesh and located in the liquid line on the inlet side of the metering device.

TROUBLESHOOTING

Use the Troubleshooting–Coolingguide (see Table 10) if problems occur with these units.

START-UP CHECKLIST

Use the Start-Up checklist to ensure proper start-up procedures are followed.

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Contents Safety Considerations Table of ContentsIntroduction Installation Inspection 50GS018-042 and 50GX024-036 Unit Dimensions50GS048-060 and 50GX042-060 Unit Dimensions Roof Curb Dimensions 50GS and 50GX Unit Corner Weights Suggested Rigging Physical Data-Unit 50GS Configuring Units for Downflow Vertical DIS- ChargePhysical Data-Unit 50GX Supply and Return Duct Opening Control Voltage Connections HIGH-VOLTAGE ConnectionsStandard Connection Mocp Electrical Data-50GSMCA Mocp Electrical Data-50GXPRE-START-UP Transformer ProtectionChecking and Adjusting Refrigerant Charge Start UP Cooling Section and Make ADJUST- MentsSTART-UP Checking Cooling Control OperationWiring Diagram 208/230-60-1 Wiring Diagram 208/230-60-3 Wiring Diagram Maintenance Indoor Airflow and Airflow AdjustmentsColor Coding for 208/230-V Motor Leads Color Coding for 460-V GE Motor Leads460 Volt Unit Watts 281 282 278 276 Cfm 833 776 702 638 554 Cooling Charging Chart, 50GS018 Units Evaporator Blower and Motor Cooling Charging Chart, 50GS042 UnitsCooling Charging Chart, 50GX030 Units Condenser FAN Condenser COIL, Evaporator COIL, and CONDEN- Sate Drain PANRefrigerant Circuit START-UP Checklist TroubleshootingEvaporator Airflow Liquid Line StrainerSymptom Cause Remedy Troubleshooting-CoolingSTART-UP Checklist Remove and Store in JOB File Book Catalog No Form 50GS,GX-4SI Replaces 50GS,GX-3SI Tab

50GX, 50GS specifications

Carrier has long been a leader in the HVAC industry, and its latest offerings, the 50GX and 50GS series, continue this tradition. These units stand out for their robust design, advanced technology, and energy-efficient operation, making them ideal choices for commercial and light industrial applications.

The Carrier 50GX is a packaged rooftop unit known for its innovative features aimed at enhancing energy efficiency while ensuring optimal indoor air quality. It employs a variable-speed compressor, which allows for precise temperature control and reduced energy consumption. The 50GX is equipped with microprocessor controls that optimize performance and simplify maintenance, offering real-time diagnostics and monitoring.

One of the standout technologies in the 50GX is its use of R-410A refrigerant, a greener alternative that reduces environmental impact without compromising cooling performance. This refrigerant is designed to deliver superior cooling efficiency while meeting strict environmental regulations. Additionally, the system features an integrated economizer, which takes advantage of outside air to improve energy efficiency during cooler months, reducing reliance on mechanical cooling.

The 50GS series, while similar in many respects to the 50GX, is tailored for applications requiring heating solutions. These units offer gas heat as an option, providing flexibility for varying climate conditions. The 50GS also incorporates an advanced heat exchanger design that maximizes heat transfer efficiency and reduces operational costs.

Both the 50GX and 50GS units are built with durability in mind. They feature a galvanized steel cabinet with a powder-coated finish, providing resistance to rust and corrosion. The robust construction ensures a long lifespan even in challenging environments.

Maintenance is made easier with these models, thanks to their accessible design that allows for quick servicing. Both the 50GX and 50GS units come with a host of customizable options, including different airflow configurations and additional filtration systems to enhance air quality.

In conclusion, the Carrier 50GX and 50GS series represent the pinnacle of HVAC technology with their focus on energy efficiency, environmental sustainability, and robust construction. These units are ideal for customers looking to invest in reliable and efficient climate control solutions for their facilities, combining advanced technology with time-tested engineering.
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