Carrier EY024-048 installation instructions Physical Data, Unit 48EJ,EK,EW,EY

Page 10

Table 1 Ð Physical Data

UNIT 48EJ,EK,EW,EY

 

 

 

024D/E

 

 

 

028D/E

 

 

 

030D/E

 

 

034D/E

 

NOMINAL CAPACITY (tons)

 

 

20

 

 

 

25

 

 

 

 

27

 

 

 

30

 

OPERATING WEIGHT (lb)*

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unit

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Al/Al² (Lo Heat/Hi Heat)

 

 

4176/4256

 

 

4262/4342

 

 

 

 

4262/4342

 

 

 

4262/4342

 

Al/Cu² (Lo Heat/Hi Heat)

 

 

4396/4476

 

 

4482/4562

 

 

 

 

4482/4562

 

 

 

4482/4562

 

Roof Curb (14-in. curb)

 

 

365

 

 

 

365

 

 

 

 

365

 

 

 

365

 

COMPRESSOR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Type Ckt 1

 

 

 

06D328

 

 

 

06D328

 

 

 

06D537

 

 

06D537

 

Ckt 2

 

 

 

06D818

 

 

 

06D328

 

 

 

06D328

 

 

06D537

 

Number of Refrigerant Circuits

 

 

2

 

 

 

2

 

 

 

 

2

 

 

 

2

 

Oil (oz) (Ckt 1, Ckt 2)

 

 

115, 88

 

 

 

 

115 ea.

 

 

 

115 ea.

 

 

115 ea.

 

REFRIGERANT TYPE

 

 

 

 

 

 

 

 

 

 

 

R-22

 

 

 

 

 

 

Operating Charge (lb-oz)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Circuit 1**

 

 

 

25-0

 

 

 

25-0

 

 

 

 

25-0

 

 

 

25-0

 

Circuit 2

 

 

 

31-0

 

 

 

25-0

 

 

 

 

25-0

 

 

 

25-0

 

CONDENSER COIL

 

 

 

 

 

Cross-Hatched 3¤8

Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate Fins

 

 

Quantity

 

 

 

1

 

 

 

1

 

 

 

 

1

 

 

 

1

 

Rows...Fins/in.

 

 

 

4...15

 

 

 

4...15

 

 

 

 

4...15

 

 

 

4...15

 

Total Face Area (sq ft)

 

 

33.3

 

 

 

33.3

 

 

 

 

33.3

 

 

 

33.3

 

CONDENSER FAN

 

 

 

 

 

 

 

 

 

 

Propeller Type

 

 

 

 

 

 

Nominal Cfm

 

 

 

13,420

 

 

 

13,420

 

 

 

 

13,420

 

 

 

13,420

 

Quantity...Diameter (in.)

 

 

2...30

 

 

 

2...30

 

 

 

 

2...30

 

 

 

2...30

 

Motor Hp (1075 Rpm)

 

 

1

 

 

 

1

 

 

 

 

1

 

 

 

1

 

EVAPORATOR COIL

 

 

 

 

 

 

Cross-Hatched 3¤8 Copper Tubes, Aluminum Plate Fins, Intertwined Circuits

 

 

Rows...Fins/in.

 

 

 

4...15

 

 

 

4...15

 

 

 

 

4...15

 

 

 

4...15

 

Total Face Area (sq ft)

 

 

31.7

 

 

 

31.7

 

 

 

 

31.7

 

 

 

31.7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EVAPORATOR FAN

 

 

 

 

 

 

 

 

 

 

Centrifugal Type

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

2...20x15

 

 

 

2...20x15

 

 

 

2...20x15

 

 

2...20x15

 

Type Drive

 

 

 

Belt

 

 

 

Belt

 

 

 

Belt

 

 

Belt

 

Nominal Cfm

 

 

 

8,000

 

 

 

10,000

 

 

 

 

11,000

 

 

 

12,000

 

Motor Hp

 

 

5

10²²

 

15

7.5

 

10²²

 

15

 

10

15²²

 

20

10

15²²

20

Motor Frame Size (Standard)

 

S184T

S215T

 

D254T

S213T

 

S215T

 

D254T

 

S215T

D254T

 

S256T

S215T

D254T

S256T

(High Efficiency)

 

S184T

S215T

 

S254T

S213T

 

S215T

 

S254T

 

S215T

S254T

 

S256T

S215T

S254T

S256T

Motor Bearing Type

 

 

 

Ball

 

 

 

 

Ball

 

 

 

 

Ball

 

 

 

Ball

 

Maximum Allowable Rpm

 

 

1200

 

 

 

1200

 

 

 

 

1200

 

 

 

1200

 

Motor Pulley Pitch Diameter

 

4.8

4.4

 

5.7

5.4

 

6.1

 

5.5

 

4.4

4.9

 

5.9

4.4

5.7

5.9

Nominal Motor Shaft Diameter (in.)

11¤8

13¤8

 

15¤8

13¤8

 

13¤8

 

15¤8

 

13¤8

15¤8

 

15¤8

13¤8

15¤8

15¤8

Fan Pulley Pitch Diameter (in.)

 

12.4

8.6

 

9.1

12.4

 

11.1

 

8.7

 

9.4

8.1

 

8.7

9.0

9.1

8.7

Nominal Fan Shaft Diameter (in.)

 

115¤16

 

 

 

 

115¤16

 

 

 

 

115¤16

 

 

 

115¤16

 

Belt, Quantity...Type

 

 

1...BX59

2...BX51

2...5VX530

1...BX59

1...5VX590

 

2...5VX530

2...BX52

2...5VX500

2...5VX530

2...BX51

2...5VX530

2...5VX530

Belt, Length (in.)

 

 

62

54

 

53

62

 

59

 

53

 

55

50

 

53

54

53

53

Pulley Center Line Distance (in.)

16.0-18.7

15.6-18.4

15.0-17.9

15.6

-18.4

 

15.0-17.9

15.6-18.4

15.0-17.9

15.6-18.4

15.0-17.9

Factory Speed Setting (rpm)

 

717

924

 

1096

773

 

962

 

1106

 

848

1059

 

1187

884

1096

1187

FURNACE SECTION

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Rollout Switch Cutout Temp (F)

 

225

 

 

 

225

 

 

 

 

225

 

 

 

225

 

Burner Ori®ce Diameter

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(in. ...drill size)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

Std

 

 

.111...34

 

 

 

.111...34

 

 

 

 

.111...34

 

 

 

.111...34

 

Liquid Propane

Alt

 

 

.089...43

 

 

 

.089...43

 

 

 

 

.089...43

 

 

 

.089...43

 

Thermostat Heat Anticipator

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Setting (amps)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Stage 1

 

 

 

0.1

 

 

 

0.1

 

 

 

 

0.1

 

 

 

0.1

 

Stage 2

 

 

 

0.1

 

 

 

0.1

 

 

 

 

0.1

 

 

 

0.1

 

Gas Input (Btuh)

Stage 1

Low

 

262,500

 

 

 

262,500

 

 

 

 

262,500

 

 

 

262,500

 

 

 

High

 

394,000

 

 

 

394,000

 

 

 

 

394,000

 

 

 

394,000

 

 

Stage 2

Low

 

350,000

 

 

 

350,000

 

 

 

 

350,000

 

 

 

350,000

 

Efficiency (Steady State) (%)

High

 

525,000

 

 

 

525,000

 

 

 

 

525,000

 

 

 

525,000

 

 

 

82

 

 

 

82

 

 

 

 

82

 

 

 

82

 

Temperature Rise Range

 

 

15-45/35-65

 

 

15-45/35-65

 

 

 

15-45/35-65

 

 

15-45/35-65

 

Manifold Pressure (in. wg)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Natural Gas

Std

 

 

3.5

 

 

 

3.5

 

 

 

 

3.5

 

 

 

3.5

 

Liquid Propane

Alt

 

 

3.5

 

 

 

3.5

 

 

 

 

3.5

 

 

 

3.5

 

Gas Valve Quantity

 

 

 

2

 

 

 

2

 

 

 

 

2

 

 

 

2

 

Field Gas Connection Size

 

 

1.5

 

 

 

1.5

 

 

 

 

1.5

 

 

 

1.5

 

(in.-FPT)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HIGH-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

426

 

 

 

426

 

 

 

 

426

 

 

 

426

 

Reset (Auto.)

 

 

 

320

 

 

 

320

 

 

 

 

320

 

 

 

320

 

LOW-PRESSURE SWITCH (psig)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Cutout

 

 

 

7

 

 

 

7

 

 

 

 

7

 

 

 

7

 

Reset (Auto.)

 

 

 

22

 

 

 

22

 

 

 

 

22

 

 

 

22

 

OUTDOOR-AIR FILTERS

 

 

 

 

 

 

 

 

 

8...16 × 25

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

 

 

 

 

 

 

 

4...20 × 25

 

 

 

 

 

 

RETURN-AIR FILTERS

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quantity...Size (in.)

 

 

 

10...20x24x2

 

 

 

10...20x24x2

 

 

 

10...20x24x2

 

 

10...20x24x2

POWER EXHAUST

 

 

 

 

 

Direct Drive, 3-Speed, Single-Phase Motor (Factory-Wired for High Speed) and Forward-Curved Fan

 

Motor, Quantity...Hp

 

 

 

4...1

 

 

 

4...1

 

 

 

 

4...1

 

 

 

4...1

 

Fan, Diameter... Width (in.)

 

 

11...10

 

 

 

11...10

 

 

 

 

11...10

 

 

 

11...10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LEGEND

Al Ð Aluminum

Cu Ð Copper

*Weight of unit does not include variable frequency drive (VFD) barometric relief, or power exhaust. If a VFD is installed, add the VFD weight in the table at right.

²Evaporator coil ®n material/condenser coil ®n material.

**Sizes 024-034: Circuit 1 uses the lower portion of condenser coil, Circuit 2 uses the upper portion. Sizes 038-048: Circuit 1 uses the left condenser coil, Circuit 2 the right. All units have intertwined evaporator coils.

²²Motor and drive shown will deliver approximately 2.5 in. wg net external static. See Table 2 for more information.

Rollout switch is manual reset.

NOTE: High heat is for 48EJ,EW only.

VFD

 

VFD WEIGHTS (lb)

 

(Hp)

208/230 v

 

460 v

575 v

 

 

 

 

 

5

20

 

22

60

7.5

51

 

37

64

 

 

 

 

 

10

51

 

61

64

 

 

 

 

 

15

61

 

63

109

 

 

 

 

 

20

63

 

111

109

 

 

 

 

 

25

105

 

112

174

 

 

 

 

 

30

172

 

118

180

 

 

 

 

 

10

Image 10
Contents Installation, Start-Up Service Instructions Field Fabricate Ductwork Instructions onUnit Leveling Tolerances Dimensions Degrees and InchesRoof Curb Sizes Unit Operating WeightSize 48EJ,EKD044 Ft-in 48EJ,EKD03848EJE038 48EJE044Base Unit Dimensions, 48EW,EY024-034 Base Unit Dimensions, 48EW,EY038-048 48EJ,EK,EW,EYD034 Unit Weight 48EJ,EK,EW,EYD02448EJ,EK,EW,EYD028 48EJ,EK,EW,EYD030 48EJ,EK,EW,EYD038Physical Data Unit 48EJ,EK,EW,EY4442/4602 4668/4828 4955/5115 Air Distribution Ð Thru-the-Bottom Combustion Fan Housing Location Unit Configuration Default Cooling Default Heating VAVField Control Remote Start/Stop Make Electrical Connections SIO CCNLED RLA LRA Electrical DataFLA LRA MCA Mocp Hacr FLA LRAFLA NECHeating, Air Conditioning Qty044 Minimum Circuit AmpsGND Ð Ground Terminal BlockDIP PEC2413 or CCN Connection Approved Shielded CablesManufacturer Cable Part no 8772RED Make Outdoor-Air Inlet AdjustmentsColor Code Recommendations WhiteAdding Seal Strip to Top of Hood Sides Adding Foam Strip to Hood Side Mounting Angle With Tabs Attached to Filter Track Assembly Psychrometric Chart for Enthalpy Control Barometric Relief Damper and Power Exhaust Mounting Details Pressure Transducer Locations START-UP Pressure Control VFD VFD Supply Air Pressure Set PointSET Point Building Pressure Signal Level Direct Digital Controls DIP Switch ConguraPotentiometer Signal Levels VdcDIP Switch Conguration Power Exhaust Default Set PointsDIP Switch Factory Settings Airflow 18,000 16,00017,000 19,000528 572 615 656 695 733 769 805 ESP Fan Performance Ð Power ExhaustMotor Limitations Standard Efficiency MotorsSequence of Operation Air Quantity LimitsUser Dened Set Points GAS HEATING, Variable AIR Volume VAV Units COM DEG. F ResetHIR Smoke Control Modes Device Pressurization Smoke Purge Evacuation Fire ShutdownStages Cooling Capacity Staging Table, CV Units With 2 CompressorsCompressor Lubrication Manufacturer LubricantEvaporator Fan Service and Replacement Typical Gas Heating SectionEvaporator-Fan Motor Replacement Condenser-Fan AdjustmentBelt Tension Adjustment Protective DevicesGas Valve Ifcb AHAIFC TranTypical Power Schematic 48EJ,EK,EW,EY024-034 208/230-3-60 Typical VAV 115-v Control Circuit Typical CV 115-v Control Circuit Typical VAV 24-v Control Circuit Typical CV 24-v Control Circuit Troubleshooting Typical Refrigerant Circuiting 48EJ,EK,EW,EY038,044 Typical Refrigerant Circuiting 48EJ,EK,EW,EY048 IGC Control Heating and Cooling IGC Control Board LED Alarms Control Board LED AlarmsTerminal no Assignment I/O Channel Designations Base Module Ð CVI/O Channel Designations Base Module Ð VAV SPTPackaged Service Training START-UP Checklist General
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Manual 118 pages 46.64 Kb

EW, EY024-048, EK, 48EJ specifications

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 are cutting-edge rooftop air conditioning units designed for commercial applications. These models are renowned for their reliability, energy efficiency, and innovative technologies aimed at providing optimal indoor comfort.

One of the standout features of these units is their advanced cooling and heating capabilities. They employ a multi-stage compressor system that allows for precise temperature control, accommodating various load requirements. This flexibility is particularly beneficial in commercial settings where the cooling load can fluctuate throughout the day.

Energy efficiency is paramount in today’s environmental landscape, and Carrier has ensured that these models meet stringent efficiency standards. They incorporate high-efficiency scroll compressors, which significantly reduce energy consumption while delivering powerful performance. The units are also equipped with variable speed fans that adjust airflow based on demand, further optimizing energy use.

In terms of construction, these rooftop units feature a robust design that enhances durability and longevity. The cabinet is constructed to withstand harsh weather conditions, ensuring reliable performance year-round. Additionally, the units are equipped with corrosion-resistant coatings, particularly useful in coastal environments where salt exposure can be a concern.

The Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY models utilize advanced controls and connectivity features, allowing for easy integration into building management systems. This connectivity enables remote monitoring and control, facilitating quick response to changing conditions and simplifying maintenance tasks.

Noise reduction is another key characteristic of these models. They are designed with sound-absorbing insulation and low-noise fan blades to ensure quiet operation, making them suitable for noise-sensitive environments such as schools and hospitals.

These units are also available with various options for air filtration and dehumidification. The use of high-efficiency air filters enhances indoor air quality by trapping dust, pollen, and other airborne particles. Enhanced dehumidification capabilities ensure that spaces remain comfortable even in humid conditions.

In conclusion, the Carrier 48EJ, 48AW, 48EK, 48AJ, and 48EY024-068 rooftop units are engineered to offer exceptional performance, energy efficiency, and durability. With their advanced technologies and user-friendly features, they stand out as reliable solutions for meeting diverse commercial cooling and heating needs, making them a popular choice for many businesses.