Carrier 48EZ-A installation instructions 1736 1695 1642 1601 1553 1512 1465 1427 1381 65oF Heating

Page 23

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

1402

1351

1311

1263

1224

1172

1136

1080

1041

 

 

 

 

Heating

49

50

52

54

56

58

60

63

65

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

27

28

29

30

31

32

33

35

36

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1457

1404

1367

1318

1284

1233

1197

1144

1104

 

 

 

 

Heating

47

48

50

52

53

55

57

59

62

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

26

27

28

29

29

31

32

33

34

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1736

1695

1642

1601

1553

1512

1465

1427

1381

 

35 --- 65oF

 

 

Heating

39

40

41

42

44

45

46

48

49

48EZ( ---,N)A48090

Medium2

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

22

23

24

24

25

26

26

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2149

2111

2062

2026

1980

1945

1905

1864

1793

 

 

 

 

Heating

NA

NA

NA

NA

NA

35

36

36

38

 

 

Med---High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

19

20

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2344

2306

2259

2203

2141

2070

1991

1902

1803

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

36

38

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1402

1351

1311

1263

1224

1172

1136

1080

1041

 

 

 

 

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

1457

1404

1367

1318

1284

1233

1197

1144

1104

 

 

 

 

Heating

60

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

33

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1736

1695

1642

1601

1553

1512

1465

1427

1381

 

30 --- 60oF

 

 

Heating

50

51

53

54

56

57

59

NA

NA

48EZ( ---,N)A48115

Medium2

Red

Rise (oF)

(17 --- 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

28

29

30

31

32

33

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2149

2111

2062

2026

1980

1945

1905

1864

1793

 

 

Med---

 

Heating

40

41

42

43

44

45

46

47

48

 

 

Orange

Rise (oF)

 

 

High1

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

23

23

24

24

25

25

26

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2344

2306

2259

2203

2141

2070

1991

1902

1803

 

 

 

 

Heating

37

38

38

39

41

42

44

46

48

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

21

21

21

22

23

23

24

25

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1402

1351

1311

1263

1224

1172

1136

1080

1041

 

 

 

 

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

1457

1404

1367

1318

1284

1233

1197

1144

1104

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1736

1695

1642

1601

1553

1512

1465

1427

1381

 

35 --- 65oF

 

 

Heating

55

57

59

60

62

64

NA

NA

NA

48EZ( ---,N)A48130

Medium2

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

31

32

33

33

34

35

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2149

2111

2062

2026

1980

1945

1905

1864

1793

 

 

Med---

 

Heating

45

46

47

48

49

50

51

52

54

 

 

Orange

Rise (oF)

 

 

High1

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

25

26

26

27

28

28

29

30

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2344

2306

2259

2203

2141

2070

1991

1902

1803

 

 

 

 

Heating

41

42

43

44

45

47

48

51

53

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

23

24

24

25

26

27

28

30

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

48EZ -- A

23

Image 23
Contents Safety Considerations Table of ContentsProvide Unit Support Receiving and InstallationIntroduction Check Equipment48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Hazard Rig and Place UnitProvide Clearances Personal Injury or Property DamageInspection Install Flue HoodInstall Gas Piping Connect Condensate DrainSediment Trap Fire or Explosion HazardUnit Size 48EZ Physical Data Unit 48EZ-AHeating Inputs Physical Data Unit 48EZ-A Cont’dMaximum Gas Flow Capacity Unit Component Damage Hazard Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Alternate MethodSupply Duct Panels Control Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation High-Voltage ConnectionsFIRE, EXPLOSION, Electrical Shock Hazard Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP Transformer ProtectionUnit Sequence of Operation Start-up Heating and Make Adjust- mentsSTART-UP Check for Refrigerant LeaksUnit Damage Hazard Adjust Gas InputCheck Heating Control Check Gas InputCheck Burner Flame Airflow and Temperature RiseLimit Switches Rollout SwitchChecking Cooling Control Operation Start-up Cooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Indoor Airflow and Airflow AdjustmentsColor Coding for Indoor Fan Motor Leads Two Cooling Fan Speeds Set-up Dehumidification feature usedGas Heating Fan Speed Set-up Continuous Fan Operation48EZ-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 Indoor Blower and Motor MaintenanceCleaning the Blower Motor and Wheel Air FilterMain Burners Limit SwitchInduced Draft combustion air Blower Assembly Burner IgnitionRefrigerant Circuit Electrical Controls and WiringOutdoor Fan Indoor Airflow Pressure SwitchesLoss of Charge Switch Gas InputExplosion Hazard High-Pressure SwitchCopeland Scroll Compressor Puron Refrigerant Compressor Oil Unit Operation and Safety HazardRefrigerant System Puronr R-410A Quick Reference Guide TroubleshootingSTART-UP Checklist Symptom Cause Remedy Troubleshooting Guide Cooling or Heat Pump Heating ModeTroubleshooting Guide-LED Error Codes Troubleshooting Guide-HeatingIII. START-UP Electrical Supply Voltage Compressor Amps TemperaturesRemove and Store in Job Files Preliminary Information Model noCatalog 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.