Carrier 50JS instruction manual A00075, TDR Time Delay Relay Thermostat Heating Tran Transformer

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LEGEND

FIELD SPLICE

AHA

ADJUSTABLE HEAT ANTICIPATOR

TERMINAL (MARKED)

C

CONTACTOR

TERMINAL (UNMARKED)

CAP

CAPACITOR

CB

CIRCUIT BREAKER

SPLICE

COMP

COMPRESSOR MOTOR

SPLICE (MARKED)

CTD

COMPRESSOR TIME DELAY

FACTORY WIRING

DB

DEFROST BOARD

FIELD CONTROL WIRING

DFT

DEFROST THERMOSTAT

FIELD POWER WIRING

DR

DEFROST RELAY

ACCESSORY OR OPTIONAL

EQUIP

EQUIPMENT

WIRING

GND

GROUND

TO INDICATE COMMON

HR

HEATER RELAY

HTR

HEATER

POTENTIAL ONLY:

IFM

INDOOR FAN MOTOR

NOT TO REPRESENT WIRING

 

LPS

LOW PRESSURE SWITCH

 

OFM

OUTDOOR FAN MOTOR

 

OFR

OUTDOOR FAN RELAY

 

QT

QUADRUPLE TERMINAL

 

RVS

REVERSING VALVE SOLENOID

 

TC

THERMOSTAT - COOLING

 

TDR

TIME DELAY RELAY

 

TH

THERMOSTAT - HEATING

 

TRAN

TRANSFORMER

NOTES:

1.IF ANY OF THE ORIGINAL WIRES FURNISHED ARE REPLACED, IT MUST BE REPLACED WITH TYPE 90 DEGREE C WIRE OR IT’S EQUIVALENT.

2. SEE PRICE PAGES FOR THERMOSTAT AND SUBBASES.

3.USE 75 DEGREE COPPER CONDUCTORS FOR FIELD INSTALLATION.

4.FOR HIGH SPEED IFM, DISCONNECT RED

WIRE FROM TDR 3 AND CONNECT BLK WIRE FROM IFM. FOR MEDIUM SPEED, DISCONNECT RED WIRE

FROM TDR 3 AND CONNECT BLU WIRE FROM IFM.

5.DEFROST TIMER TO BE SET AT 90 MINUTES EXCEPT FOR 50JS048, 060 MODELS

SET AT 50 MINUTES.

A00075

Fig. 14ÐWiring Schematics

11

Image 11
Contents Safety Considerations Receiving and InstallationMaintenance TroubleshootingElectrical Characteristics Unit Weight Unit Height Center of Gravity50JX048 IN. MM 50JS04850JS060 50JX042Unit Size ODS Catalog Number Receiving and InstallationÐGeneral ÐCheck EquipmentÐRig and Place Unit InstallationÐProvide Unit Support ÐProvide ClearancesÐProvide for Condensate Disposal ÐSelect and Install DuctworkUnit Maximum Weight BÐPhysical Data AÐPhysical DataC99013 ÐInstall Electrical ConnectionsC99061 C99030A00073 ÐWiring SchematicsA00074 A00075 TDR Time Delay Relay Thermostat Heating Tran TransformerMocp AÐElectrical DataÐ50JSRLA LRA FLA → BÐElectrical DataÐ50JX Rated Load Amps Full Load AmpsLocked Rotor Amps Minimum Circuit Amps Mocp Maximum Overcurrent ProtectionSTART-UP Special Procedures for 208-V OperationÐStart-Up Adjustments PRE-START-UPÐTypical Heat Pump Operation, Heating Mode Unit Motor Speed External Static Pressure IN. WG Checking and Adjusting Refrigerant ChargeAÐWet Coil Air Delivery Unit 50JS 018-060 Deduct 10% for BÐWet Coil Air Delivery Unit 50JX 024-060 Deduct 10% for Speed Indoor Airflow and Airflow AdjustmentsC00031 MaintenanceC00030 C00032C99032 C99031C99033 C99035Outdoor FAN AIR FilterIndoor Blower and Motor C99029 System InformationC99097 Symptom Cause Remedy ÐCooling and Heating Troubleshooting ChartSTART-UP Checklist Remove and Store in JOB File Cooling and Heating Troubleshooting Chart contdPage 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.