Carrier 50ZHA024-060 Physical Data, Install Electrical Connections, HIGH-VOLTAGE Connections

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Table 2—Physical Data

UNIT 50ZHA

024

030

 

036

 

042

 

048

 

060

OPERATING WEIGHT (lbs)

293

324

 

377

 

389

 

384

 

433

COMPRESSOR TYPE

 

 

Scroll

 

 

 

Ultra Tech Scroll

REFRIGERANT Charge (lb)

 

 

 

 

R-22

 

 

 

 

 

 

 

 

 

 

 

 

 

7.5

10.3

 

10.3

 

11.9

 

11.4

 

13.3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

REFRIGERANT METERING DEVICE

 

Accurater

 

 

 

 

TXV

Orifice ID (in.)

.067

.067

 

.082

 

.086

 

—

 

—

 

 

 

 

 

 

 

 

 

 

 

Orifice OD (in.)

.049

.057

 

.059

 

.063

 

.070

 

.073

CONDENSER COIL

 

 

Copper Tubes, Aluminum Plate Fins

 

 

 

Rows...Fins/in.

2...21

2...21

 

2...21

 

2...21

 

2...21

 

2...21

Face Area (sq. ft.)

11.1

12.7

 

15.8

 

15.8

 

13.3

 

15.8

CONDENSER FAN

 

 

 

Propeller

 

 

 

Nominal Cfm

2600

2600

 

3200

 

3200

 

3200

 

3300

Diameter (in.)

20

20

 

20

 

20

 

20

 

20

Motor HP (RPM)

1/8 (825)

1/8 (825)

 

1/4 (1100)

 

1/4 (1100)

 

1/4 (1100)

 

1/2 (1100)

EVAPORATOR COIL

 

 

Copper Tubes, Aluminum Plate Fins

 

 

 

3...17

3...17

 

4...17

 

4...17

 

4...17

 

4...17

Face Area (sq. ft.)

 

 

 

 

4.3

4.9

 

4.9

 

6.1

 

4.9

 

6.1

 

 

 

 

 

Evaporator Blower

 

 

 

Direct Drive

 

 

 

Nominal Airflow (CFM)

800

1000

 

1200

 

1400

 

1600

 

1875

Size (in.)

10 x 8

10 x 8

 

11 x 9

 

11 x 9

 

11 x 10

 

11 x 10

Motor HP (RPM)

1/2 (1050)

1/2 (1050)

 

3/4 (1050)

 

3/4 (1050)

 

1 (1050)

 

1 (1050)

CONNECTING DUCT SIZES

 

 

 

Round

 

 

 

Supply Air (in.)

 

 

 

 

14

 

 

 

 

Return Air (in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

14

 

 

 

 

Return-Air Filters (in.)*

24 x 24

24 x 24

 

24 x 24

 

24 x 30

 

30 x 30

 

30 x 30

Throwaway

 

 

 

 

 

 

 

 

 

 

 

 

 

 

*Required filter sizes shown are based on the ARI (Air Conditioning and Refrigeration Institute) rated airflow at a velocity of 300 ft/min for throwaway type or 450 ft/min for high capacity type. Recommended filters are 1-in. thick.

Step 7—Install Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal injury or death.

The unit cabinet must have an uninterrupted, unbroken electrical ground to minimize the possibility of personal injury if an electrical fault should occur. This ground may consist of an electrical wire connected to the unit ground in the control compartment, or conduit approved for electrical ground when installed in accordance with NEC (National Electrical Code), ANSI (American National Standards Institute)/NFPA (latest edition) (in Canada, Canadian Elec- trical Code CSA C22.1) and local electrical codes.

UNIT DAMAGE HAZARD

Failure to follow these precautions may result in damage to the unit being installed:

1.Make all electrical connections in accordance with NEC ANSI/NFPA (latest edition) and local electrical codes governing such wiring. In Canada, all electrical connec- tions must be in accordance with CSA standard C22.1 Canadian Electrical Code Part 1 and applicable local codes. Refer to unit wiring diagram.

2.Use only copper conductor for connections between field-supplied electrical disconnect switch and unit. DO NOT USE ALUMINUM WIRE.

3.Be sure that high-voltage power to unit is within operating voltage range indicated on unit rating plate.

4.Insulate low-voltage wires for highest voltage contained within conduit when low-voltage control wires are run in same conduit as high-voltage wires.

5.Do not damage internal components when drilling through any panel to mount electrical hardware, conduit, etc. Consult local power company for correction of improper voltage.

HIGH-VOLTAGE CONNECTIONS

The unit must have a separate electrical service with a field- supplied, waterproof disconnect switch mounted at, or within sight from the unit. Refer to the unit rating plate for maximum fuse/circuit breaker size and minimum circuit amps (ampacity) for wire sizing. See Table 6 for electrical data.

The field-supplied disconnect may be mounted on the unit over the high-voltage inlet hole. (See Fig. 2.)

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Contents Safety Considerations Table of ContentsIntroduction Unit Base Dimensions, 50ZHA024-060 Provide for Condensate Disposal Unit SpecificationsUnit Damage Hazard HIGH-VOLTAGE Connections Install Electrical ConnectionsPhysical Data Size PRE-START-UPRequired Subcooling F C Required Liquid Line TemperatureRequired Subcooling START-UP Start-Up Cooling Section and Make AdjustmentsCheck for Refrigerant Leaks Refrigerant ChargeSize Rated Airflow High Airflow Indoor Airflow and Airflow AdjustmentsFor 208/230-V Blower Motors Typical Unit Electrical Diagram Sizes A05200 Accessory Electric Heater Wiring Electrical Data-50ZHA HIGH-PRESSURE Relief Valve Unit ControlsSequence of Operation FAN OperationMaintenance Cooling Charging ChartAir Filter FIRE, EXPLOSION, Electrical SHOCK, CUT HAZ- ARDUnit Top Removal Outdoor-Coil Side Indoor Blower and MotorFilter Pressure Drop in. wg Accessory Electric Heat Pressure Drop In. wgWet Coil Pressure Drop START-UP Checklist TroubleshootingTypical Heat Pump Operation, Heating Mode Symptom Cause Remedy Troubleshooting-Cooling and HeatingIII. START-UP Preliminary InformationII. PRE-START-UP

50ZHA024-060 specifications

The Carrier 50ZHA024-060 is a remarkable rooftop unit designed for commercial applications, providing both cooling and heating solutions in a compact and efficient manner. Known for its reliability and advanced engineering, this model is ideal for businesses seeking to optimize indoor comfort while maintaining energy efficiency.

One of the key features of the 50ZHA unit is its advanced scroll compressor technology. This innovation not only ensures quiet operation but also offers superior efficiency, reducing operational costs. The unit is designed to deliver a wide range of capacity options, from 24,000 to 60,000 BTU/h, making it versatile for various building sizes and requirements.

The 50ZHA series employs a microprocessor-based control system that enhances user convenience and operational efficiency. This smart technology enables precise temperature control, scheduling, and diagnostics. Furthermore, it offers compatibility with advanced building management systems, allowing for seamless integration into modern HVAC setups.

Energy efficiency is a hallmark of the Carrier 50ZHA024-060, which is equipped with environmentally friendly refrigerants that meet current regulatory standards. This commitment to sustainability is further emphasized by its exceptional SEER and EER ratings, indicating lower energy consumption without compromising performance.

In terms of construction, the 50ZHA series features a robust design with corrosion-resistant materials, ensuring durability even in harsh environmental conditions. The unit’s compact rooftop design simplifies installation and reduces the footprint, making it an excellent choice for urban areas where space is limited.

Moreover, the Carrier 50ZHA models are equipped with advanced filtration systems that improve indoor air quality by minimizing airborne contaminants. This is particularly beneficial for commercial spaces, where maintaining a healthy environment is crucial for employee productivity and wellbeing.

The 50ZHA024-060 also offers various customizable options, including economizers for increased fresh air intake and enhanced humidity control features. These options allow businesses to tailor their HVAC solutions to specific operational needs, ensuring optimal comfort year-round.

In summary, the Carrier 50ZHA024-060 is an exceptional rooftop unit that combines advanced technology, energy efficiency, and user-friendly controls. Its sturdy construction, along with a range of customizable features, makes it a leading choice for commercial HVAC applications, ensuring sustained performance and comfort in diverse settings.
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