Carrier 48EZ-A installation instructions 1234 1168 1093 1021 961 894 825 759 687 Heating Low Blue

Page 22

48EZ -- A

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

1234

1168

1093

1021

961

894

825

759

687

 

 

 

 

Heating

55

58

62

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

31

32

35

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1290

1223

1154

1090

1027

977

894

828

762

 

 

 

 

Heating

53

56

59

62

NA

NA

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

29

31

33

35

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1354

1290

1226

1158

1102

1046

981

918

843

 

35 --- 65oF

 

 

Heating

50

53

55

59

62

65

NA

NA

NA

48EZ( ---,N)A36090

Medium2

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

29

31

33

34

36

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1606

1546

1489

1430

1371

1316

1258

1208

1140

 

 

 

 

Heating

42

44

46

48

50

52

54

56

60

 

 

Med---High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

24

24

25

26

28

29

30

31

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1630

1580

1517

1463

1407

1339

1277

1210

1131

 

 

 

 

Heating

42

43

45

46

48

51

53

56

60

 

 

High1

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

24

25

26

27

28

30

31

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1295

1234

1182

1126

1075

1016

955

898

857

 

 

 

 

Heating

34

36

38

39

41

44

47

49

52

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

19

20

21

22

23

24

26

27

29

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1345

1282

1235

1194

1140

1095

1027

974

921

 

 

 

 

Heating

33

35

36

37

39

41

43

46

48

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

18

19

20

21

22

23

24

25

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1505

1452

1413

1358

1323

1282

1234

1169

1130

 

25 --- 55oF

 

 

Heating

30

31

31

33

34

35

36

38

39

48EZ( ---,N)A42060

Medium

Red

Rise (oF)

(14 --- 31oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

16

17

17

18

19

19

20

21

22

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1545

1492

1449

1411

1362

1313

1278

1231

1188

 

 

Med---

 

Heating

29

30

31

31

33

34

35

36

37

 

 

Orange

Rise (oF)

 

 

High2

 

 

 

 

 

 

 

 

 

 

 

 

Heating

16

17

17

17

18

19

19

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1705

1643

1607

1568

1518

1483

1448

1404

1360

 

 

 

 

Heating

26

27

28

28

29

30

31

32

33

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

14

15

15

16

16

17

17

18

18

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1295

1234

1182

1126

1075

1016

955

898

857

 

 

 

 

Heating

53

55

58

60

63

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

29

31

32

34

35

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1345

1282

1235

1194

1140

1095

1027

974

921

 

 

 

 

Heating

51

53

55

57

60

62

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

29

31

32

33

35

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1505

1452

1413

1358

1323

1282

1234

1169

1130

 

35 --- 65oF

 

 

Heating

45

47

48

50

51

53

55

58

60

48EZ( ---,N)A42090

Medium1

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

26

27

28

29

29

31

32

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1545

1492

1449

1411

1362

1313

1278

1231

1188

 

 

Med---

 

Heating

44

46

47

48

50

52

53

55

57

 

 

Orange

Rise (oF)

 

 

High2

 

 

 

 

 

 

 

 

 

 

 

 

Heating

24

25

26

27

28

29

30

31

32

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1705

1643

1607

1568

1518

1483

1448

1404

1360

 

 

 

 

Heating

40

41

42

43

45

46

47

48

50

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

23

24

24

25

25

26

27

28

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

22

Image 22
Contents Table of Contents Safety ConsiderationsCheck Equipment Receiving and InstallationIntroduction Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Personal Injury or Property Damage Rig and Place UnitProvide Clearances HazardConnect Condensate Drain Install Flue HoodInstall Gas Piping InspectionFire or Explosion Hazard Sediment TrapPhysical Data Unit 48EZ-A Unit Size 48EZMaximum Gas Flow Capacity Physical Data Unit 48EZ-A Cont’dHeating Inputs Alternate Method Install Duct ConnectionsConfiguring Units for Downflow Vertical Discharge Unit Component Damage HazardSupply Duct Panels High-Voltage Connections Install Electrical ConnectionsSpecial Procedures for 208-V Operation Control Voltage ConnectionsTransformer Protection Balance Point Setting-Thermidistat or Hybrid ThermostatPRE-START-UP FIRE, EXPLOSION, Electrical Shock HazardCheck for Refrigerant Leaks Start-up Heating and Make Adjust- mentsSTART-UP Unit Sequence of OperationCheck Gas Input Adjust Gas InputCheck Heating Control Unit Damage HazardRollout Switch Airflow and Temperature RiseLimit Switches Check Burner FlameIndoor Airflow and Airflow Adjustments Start-up Cooling and Make Adjust- mentsChecking and Adjusting Refrigerant Charge Checking Cooling Control OperationContinuous Fan Operation Two Cooling Fan Speeds Set-up Dehumidification feature usedGas Heating Fan Speed Set-up Color Coding for Indoor Fan Motor LeadsFilter Pressure Drop Table IN. W.C 48EZ-A Wet Coil Pressure Drop 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 Air Filter MaintenanceCleaning the Blower Motor and Wheel Indoor Blower and MotorBurner Ignition Limit SwitchInduced Draft combustion air Blower Assembly Main BurnersOutdoor Fan Electrical Controls and WiringRefrigerant Circuit Gas Input Pressure SwitchesLoss of Charge Switch Indoor AirflowCopeland Scroll Compressor Puron Refrigerant High-Pressure SwitchExplosion Hazard Refrigerant System Unit Operation and Safety HazardCompressor Oil START-UP Checklist TroubleshootingPuronr R-410A Quick Reference Guide Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause RemedyTroubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesPreliminary Information Model no TemperaturesRemove and Store in Job Files 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.