Carrier 50JS instruction manual ÐTypical Heat Pump Operation, Heating Mode

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OUTDOOR COIL

ACCUMULATOR

COMPRESSOR

Metering

Position

LEGEND

LCS – Loss of Charge Switch

Accurater® Metering Device

Arrow indicates direction of flow

Bypass Position

LCS

INDOOR COIL

C99027

1.Hot gas from compressor flows through the 4-way valve and is directed to the indoor coil. It is then condensed and subcooled through the coil circuits and then leaves the indoor coil by way of the ID Accurater in the bypass position to the liquid line.

2.The refrigerant then feeds the outdoor coil through the OD Accurater device in the metering position and distributes to each circuit.

3.Each circuit evaporates the refrigerant and the circuits are combined in the outdoor coil header.

4.The refrigerant then flows through the 4-way valve, accumulator, and back to the compressor.

Fig. 21ÐTypical Heat Pump Operation, Heating Mode

OUTDOOR COIL

ACCUMULATOR

COMPRESSOR

 

 

LEGEND

Bypass

 

Position

LCS – Loss of Charge Switch

Accurater® Metering Device

Arrow indicates direction of flow

Metering

Position

LCS

INDOOR COIL

C99028

1.Hot gas from compressor flows through the 4-way valve and is directed to the outdoor coil. It is then condensed and subcooled through the coil circuits. Refrigerant leaves the outdoor coil by way of the OD Accurater in the bypass position to the liquid line.

2.The refrigerant then feeds the indoor coil through the ID Accurater device in the metering position and distributes to each circuit.

3.Each circuit evaporates the refrigerant and the circuits are combined in the indoor coil header.

4.The refrigerant then flows through the 4-way valve, accumulator, and back to the compressor.

Fig. 22ÐTypical Heat Pump Operation, Cooling Mode

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Contents Receiving and Installation MaintenanceTroubleshooting Safety ConsiderationsUnit Weight Unit Height Center of Gravity Electrical CharacteristicsIN. MM 50JS048 50JS06050JX042 50JX048Receiving and Installation ÐGeneralÐCheck Equipment Unit Size ODS Catalog NumberInstallation ÐProvide Unit SupportÐProvide Clearances ÐRig and Place UnitUnit Maximum Weight ÐSelect and Install DuctworkÐProvide for Condensate Disposal AÐPhysical Data BÐPhysical DataÐInstall Electrical Connections C99061C99030 C99013ÐWiring Schematics A00073A00074 TDR Time Delay Relay Thermostat Heating Tran Transformer A00075RLA LRA FLA AÐElectrical DataÐ50JSMocp → BÐElectrical DataÐ50JX Full Load Amps Locked Rotor AmpsMinimum Circuit Amps Mocp Maximum Overcurrent Protection Rated Load AmpsSpecial Procedures for 208-V Operation ÐStart-Up AdjustmentsPRE-START-UP START-UPÐTypical Heat Pump Operation, Heating Mode AÐWet Coil Air Delivery Unit 50JS 018-060 Deduct 10% for Checking and Adjusting Refrigerant ChargeUnit Motor Speed External Static Pressure IN. WG BÐWet Coil Air Delivery Unit 50JX 024-060 Deduct 10% for Indoor Airflow and Airflow Adjustments SpeedMaintenance C00030C00032 C00031C99031 C99033C99035 C99032Indoor Blower and Motor AIR FilterOutdoor FAN C99097 System InformationC99029 ÐCooling and Heating Troubleshooting Chart Symptom Cause RemedyCooling and Heating Troubleshooting Chart contd START-UP Checklist Remove and Store in JOB FilePage Page Book Tab 5a 5a Catalog No Form 50JS,JX-1SI Replaces 50JX-2SI

50JS specifications

The Carrier 50JS is a high-performance rooftop unit designed for commercial applications, combining advanced technology with energy efficiency to deliver optimal heating and cooling performance. Its compact design allows for easy installation, making it an ideal choice for various settings such as retail spaces, schools, and office buildings.

One of the standout features of the Carrier 50JS is its innovative energy efficiency. Equipped with a high-efficiency scroll compressor, it significantly reduces energy consumption while providing reliable climate control. This model boasts a commendable SEER (Seasonal Energy Efficiency Ratio) rating, which translates to lower utility bills and a reduced carbon footprint, meeting modern energy efficiency standards.

The 50JS unit utilizes R-410A refrigerant, an environmentally friendly option that contributes to its low global warming potential compared to traditional refrigerants. This aligns with Carrier's commitment to sustainability and reducing environmental impact.

Another significant characteristic of the 50JS is its advanced controls and intelligent building integration capabilities. The unit comes with a microprocessor-based control system that allows for precise temperature management and can be easily integrated into building automation systems. This feature enhances user experience, providing real-time data and better management of HVAC operations.

Noise reduction technology is also a key design focus of the Carrier 50JS. The unit incorporates sound-attenuating materials and features that minimize operational noise, making it suitable for noise-sensitive environments like offices and educational institutions.

In terms of air quality, the 50JS offers various filtration options, including high-efficiency filters that remove airborne particulates. This results in cleaner, healthier indoor air, which is crucial for occupant comfort and well-being.

Furthermore, the rooftop unit is built to withstand harsh weather conditions, featuring a durable cabinet constructed from galvanized steel with a corrosion-resistant finish. This enhances the unit's longevity and reliability over time.

In conclusion, the Carrier 50JS rooftop unit stands out in the commercial HVAC market due to its energy efficiency, advanced controls, quiet operation, and robust design. It represents a blend of state-of-the-art technology and practical features, making it a preferred choice for those looking to invest in reliable and sustainable climate control solutions.
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