Carrier 48EZ-A installation instructions 741 638 547 415 Heating Low Blue

Page 21

Table 10 (cont) - Dry Coil Air Delivery* - Horizontal and Downflow Discharge - Unit 48EZ-A24-60

UNIT

HEATING

MOTOR

WIRE

 

 

 

EXTERNAL STATIC PRESSURE (in. W.C.)

 

 

RISE RANGE

SPEED

COLOR

 

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

 

 

 

 

 

 

CFM

741

638

547

415

--- ---

--- ---

--- ---

--- ---

--- ---

 

 

 

 

Heating

41

47

55

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

26

31

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

973

887

823

733

665

538

451

--- ---

--- ---

 

 

Med---

 

Heating

31

34

37

41

45

56

NA

NA

NA

 

 

Pink

Rise (oF)

 

 

Low1

 

 

 

 

 

 

 

 

 

 

 

 

Heating

17

19

20

23

25

31

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1088

1023

954

881

800

723

658

563

461

 

30 --- 60oF

 

 

Heating

NA

30

32

34

38

42

46

54

NA

48EZ( ---,N)A30040

Medium

Red

Rise (oF)

(17 --- 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

16

18

19

21

23

26

30

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1140

1064

996

915

840

758

687

564

480

 

 

Med---

 

Heating

NA

NA

30

33

36

40

44

54

NA

 

 

Orange

Rise (oF)

 

 

High2

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

17

18

20

22

24

30

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1202

1140

1082

1015

961

881

810

732

631

 

 

 

 

Heating

NA

NA

NA

30

31

34

37

41

48

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

17

17

19

21

23

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

741

638

547

415

--- ---

--- ---

--- ---

--- ---

--- ---

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

973

887

823

733

665

538

451

--- ---

--- ---

 

 

 

 

Heating

46

50

54

NA

NA

NA

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

28

30

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1088

1023

954

881

800

723

658

563

461

 

25 --- 55oF

 

 

Heating

41

43

47

50

NA

NA

NA

NA

NA

48EZ( ---,N)A30060

Medium

Red

Rise (oF)

(14 --- 31oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

24

26

28

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1140

1064

996

915

840

758

687

564

480

 

 

Med---

 

Heating

39

42

45

49

53

NA

NA

NA

NA

 

 

Orange

Rise (oF)

 

 

High2

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

23

25

27

29

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1202

1140

1082

1015

961

881

810

732

631

 

 

 

 

Heating

37

39

41

44

46

50

55

NA

NA

 

 

High1

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

21

22

23

24

26

28

30

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1234

1168

1093

1021

961

894

825

759

687

 

 

 

 

Heating

36

38

41

44

46

50

54

NA

NA

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

20

21

23

24

26

28

30

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1290

1223

1154

1090

1027

977

894

828

762

 

 

 

 

Heating

34

36

39

41

43

45

50

54

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

21

23

24

25

28

30

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1354

1290

1226

1158

1102

1046

981

918

843

 

25 --- 55oF

 

 

Heating

33

34

36

38

40

42

45

48

53

48EZ( ---,N)A36060

Medium2

Red

Rise (oF)

(14 --- 31oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

18

19

20

21

22

24

25

27

29

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1606

1546

1489

1430

1371

1316

1258

1208

1140

 

 

 

 

Heating

28

29

30

31

32

34

35

37

39

 

 

Med---High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

15

16

17

17

18

19

20

20

22

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1630

1580

1517

1463

1407

1339

1277

1210

1131

 

 

 

 

Heating

27

28

29

30

32

33

35

37

39

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

15

16

16

17

18

18

19

20

22

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

48EZ -- A

21

Image 21
Contents Safety Considerations Table of ContentsIntroduction Receiving and InstallationCheck Equipment Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Provide Clearances Rig and Place UnitPersonal Injury or Property Damage HazardInstall Gas Piping Install Flue HoodConnect Condensate Drain InspectionSediment Trap Fire or Explosion HazardUnit Size 48EZ Physical Data Unit 48EZ-APhysical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs Configuring Units for Downflow Vertical Discharge Install Duct ConnectionsAlternate Method Unit Component Damage HazardSupply Duct Panels Special Procedures for 208-V Operation Install Electrical ConnectionsHigh-Voltage Connections Control Voltage ConnectionsPRE-START-UP Balance Point Setting-Thermidistat or Hybrid ThermostatTransformer Protection FIRE, EXPLOSION, Electrical Shock HazardSTART-UP Start-up Heating and Make Adjust- mentsCheck for Refrigerant Leaks Unit Sequence of OperationCheck Heating Control Adjust Gas InputCheck Gas Input Unit Damage HazardLimit Switches Airflow and Temperature RiseRollout Switch Check Burner FlameChecking and Adjusting Refrigerant Charge Start-up Cooling and Make Adjust- mentsIndoor Airflow and Airflow Adjustments Checking Cooling Control OperationGas Heating Fan Speed Set-up Two Cooling Fan Speeds Set-up Dehumidification feature usedContinuous Fan Operation Color Coding for Indoor Fan Motor Leads48EZ-A Wet Coil Pressure Drop IN. W.C Filter Pressure Drop Table IN. W.C741 638 547 415 Heating Low Blue 1234 1168 1093 1021 961 894 825 759 687 Heating Low Blue 1736 1695 1642 1601 1553 1512 1465 1427 1381 65oF Heating 1927 1893 1858 1824 1791 1759 1720 1689 1640 65oF Heating 48EZ a 208/230-3-60 Wiring Diagram, Unit 48EZ-A Cooling Charging Table-Subcooling Cleaning the Blower Motor and Wheel MaintenanceAir Filter Indoor Blower and MotorInduced Draft combustion air Blower Assembly Limit SwitchBurner Ignition Main BurnersElectrical Controls and Wiring Outdoor FanRefrigerant Circuit Loss of Charge Switch Pressure SwitchesGas Input Indoor AirflowHigh-Pressure Switch Copeland Scroll Compressor Puron RefrigerantExplosion Hazard Unit Operation and Safety Hazard Refrigerant SystemCompressor Oil Troubleshooting START-UP ChecklistPuronr R-410A Quick Reference Guide Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating ModeTroubleshooting Guide-LED Error Codes Troubleshooting Guide-HeatingRemove and Store in Job Files TemperaturesPreliminary Information Model no III. START-UP Electrical Supply Voltage Compressor AmpsCatalog No 48EZ---06SI
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Manual 10 pages 39.3 Kb

48EZ-A specifications

The Carrier 48EZ-A and 48VT-A are two advanced rooftop unit air conditioners that exemplify innovation and efficiency in HVAC technology. Designed for commercial applications, these units provide optimal comfort while ensuring energy conservation and reliability.

One of the standout features of the Carrier 48EZ-A is its high-efficiency cooling system. With SEER ratings reaching up to 16, this model uses advanced compressor technology to ensure that energy consumption stays low while maximizing cooling output. The 48EZ-A incorporates a two-stage scroll compressor that enhances performance during partial load conditions, making it ideal for varying temperature demands throughout the day.

Meanwhile, the Carrier 48VT-A is designed with variable speed technology that allows for precise modulation of airflow and cooling capacity, adapting seamlessly to real-time building conditions. This technology not only improves comfort but also significantly reduces energy usage by optimizing operational efficiency.

Both units are equipped with advanced microprocessor controls that facilitate superior management of the HVAC system. The controls offer programmable options allowing for enhanced control over system operation, scheduling, and diagnostics. This promotes easy maintenance and ensures long-term reliability.

In terms of construction, the Carrier 48EZ-A and 48VT-A units are built with corrosion-resistant materials, ensuring durability and longevity even in challenging environments. The cabinet is designed with insulated panels to minimize sound levels, making them suitable for installation in noise-sensitive locations.

Moreover, both models are equipped for easy installation and serviceability. The logical wiring design and access ports streamline maintenance, reducing downtime and optimizing overall performance. Additionally, they feature an energy-efficient fan design that maximizes airflow while minimizing energy use.

In summary, the Carrier 48EZ-A and 48VT-A rooftop units stand out in the HVAC market for their energy efficiency, advanced technology, and durable construction. These features make them ideal choices for various commercial applications where comfort, efficiency, and reliability are paramount. The combination of high-performance components and user-friendly features positions these models as leaders in modern HVAC solutions.