Carrier 48EZ-A installation instructions 1927 1893 1858 1824 1791 1759 1720 1689 1640 65oF Heating

Page 24

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

1445

1389

1341

1281

1236

1189

1139

1072

1027

 

 

 

 

Heating

47

49

51

53

55

57

60

63

NA

 

 

Low1

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

26

27

28

29

31

32

33

35

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1678

1635

1602

1558

1513

1474

1438

1404

1349

 

 

 

 

Heating

41

42

42

44

45

46

47

48

50

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

23

24

24

25

26

26

27

28

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1927

1893

1858

1824

1791

1759

1720

1689

1640

 

35 --- 65oF

 

 

Heating

35

36

37

37

38

39

40

40

41

48EZ( ---,N)A60090

Medium2

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

20

20

20

21

21

21

22

22

23

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2131

2088

2065

2013

1982

1941

1888

1860

1785

 

 

 

 

Heating

NA

NA

NA

NA

NA

35

36

37

38

 

 

Med---High

Orange

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

19

20

20

21

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2461

2409

2339

2286

2192

2140

2062

1968

1874

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

35

36

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

NA

NA

NA

NA

NA

NA

NA

19

20

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1445

1389

1341

1281

1236

1189

1139

1072

1027

 

 

 

 

Heating

60

NA

NA

NA

NA

NA

NA

NA

NA

 

 

Low

Blue

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

33

NA

NA

NA

NA

NA

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1678

1635

1602

1558

1513

1474

1438

1404

1349

 

 

 

 

Heating

52

53

54

56

57

59

60

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

29

30

30

31

32

33

34

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1927

1893

1858

1824

1791

1759

1720

1689

1640

 

30 --- 60oF

 

 

Heating

45

46

47

48

49

49

51

51

53

48EZ( ---,N)A60115

Medium2

Red

Rise (oF)

(17 --- 33oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

26

26

26

27

27

28

29

29

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2131

2088

2065

2013

1982

1941

1888

1860

1785

 

 

Med---

 

Heating

41

42

42

43

44

45

46

47

49

 

 

Orange

Rise (oF)

 

 

High1

 

 

 

 

 

 

 

 

 

 

 

 

Heating

23

23

23

24

24

25

26

26

27

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2461

2409

2339

2286

2192

2140

2062

1968

1874

 

 

 

 

Heating

35

36

37

38

40

41

42

44

46

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

20

20

21

21

22

23

23

25

26

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1445

1389

1341

1281

1236

1189

1139

1072

1027

 

 

 

 

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

1678

1635

1602

1558

1513

1474

1438

1404

1349

 

 

 

 

Heating

57

59

60

62

64

65

NA

NA

NA

 

 

Med---Low

Pink

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

32

33

33

34

35

36

NA

NA

NA

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

1927

1893

1858

1824

1791

1759

1720

1689

1640

 

35 --- 65oF

 

 

Heating

50

51

52

53

54

55

56

57

59

48EZ( ---,N)A60130

Medium2

Red

Rise (oF)

(19 --- 36oC)

 

 

 

 

 

 

 

 

 

 

 

 

Heating

28

28

29

29

30

30

31

32

33

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2131

2088

2065

2013

1982

1941

1888

1860

1785

 

 

Med---

 

Heating

45

46

47

48

49

50

51

52

54

 

 

Orange

Rise (oF)

 

 

High1

 

 

 

 

 

 

 

 

 

 

 

 

Heating

25

26

26

27

27

28

28

29

30

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CFM

2461

2409

2339

2286

2192

2140

2062

1968

1874

 

 

 

 

Heating

39

40

41

42

44

45

47

49

51

 

 

High

Black

Rise (oF)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heating

22

22

23

23

24

25

26

27

29

 

 

 

 

Rise (oC)

 

 

 

 

 

 

 

 

 

 

 

 

 

*Air delivery values are without air filter and are for dry coil (See Table 8 --- 48EZ---A Wet Coil Pressure Drop table).

1 Factory ---shipped gas heating speed

2 Factory ---shipped heat pump speed NA --- Not allowed for heating speed

Note: Deduct field---supplied air filter pressure drop and wet coil pressure drop to obtain external static pressure available for ducting. Shaded areas indicate speed/static combinations that are not permitted for dehumidification speed.

24

Image 24
Contents Table of Contents Safety ConsiderationsReceiving and Installation IntroductionCheck Equipment Provide Unit Support48EZ-A24-36 Unit Dimensions 48EZ-A42-60 Unit Dimensions Small Curb Rig and Place Unit Provide ClearancesPersonal Injury or Property Damage HazardInstall Flue Hood Install Gas PipingConnect Condensate Drain InspectionFire or Explosion Hazard Sediment TrapPhysical Data Unit 48EZ-A Unit Size 48EZPhysical Data Unit 48EZ-A Cont’d Maximum Gas Flow CapacityHeating Inputs Install Duct Connections Configuring Units for Downflow Vertical DischargeAlternate Method Unit Component Damage HazardSupply Duct Panels Install Electrical Connections Special Procedures for 208-V OperationHigh-Voltage Connections Control Voltage ConnectionsBalance Point Setting-Thermidistat or Hybrid Thermostat PRE-START-UPTransformer Protection FIRE, EXPLOSION, Electrical Shock HazardStart-up Heating and Make Adjust- ments START-UPCheck for Refrigerant Leaks Unit Sequence of OperationAdjust Gas Input Check Heating ControlCheck Gas Input Unit Damage HazardAirflow and Temperature Rise Limit SwitchesRollout Switch Check Burner FlameStart-up Cooling and Make Adjust- ments Checking and Adjusting Refrigerant ChargeIndoor Airflow and Airflow Adjustments Checking Cooling Control OperationTwo Cooling Fan Speeds Set-up Dehumidification feature used Gas Heating Fan Speed Set-upContinuous Fan Operation 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 Maintenance Cleaning the Blower Motor and WheelAir Filter Indoor Blower and MotorLimit Switch Induced Draft combustion air Blower AssemblyBurner Ignition Main BurnersElectrical Controls and Wiring Outdoor FanRefrigerant Circuit Pressure Switches Loss of Charge SwitchGas 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 Troubleshooting Guide Cooling or Heat Pump Heating Mode Symptom Cause RemedyTroubleshooting Guide-Heating Troubleshooting Guide-LED Error CodesTemperatures Remove and Store in Job FilesPreliminary 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.