Carrier 48MA/50ME016-040 specifications Physical Data

Page 6

Table 1 Ð Physical Data

 

UNIT 48MA/50ME

 

016

024

 

028

 

030

034

 

040

 

Zone Modules (Quantity)

 

8

8

 

10

 

10

12

 

12

 

Nominal Cooling Capacity (tons)

15

20

 

25

 

28

30

 

37

 

OPERATING WEIGHT (lb)

 

 

 

 

 

 

 

 

 

 

 

Base Unit 48MA

 

3395

3815

 

4075

 

4080

5340

 

5710

 

Base Unit 50ME (with electric heat)

2995

3415

 

3675

 

3680

4900

 

5270

 

Roof Curb

 

506

506

 

506

 

506

630

 

630

 

REFRIGERANT CHARGE Ð R-22 (lb)

28

32

 

43

 

43

57

 

66.1

 

COMPRESSOR

 

 

 

Reciprocating Hermetic, 1725 Rpm

 

 

 

 

No. 1 Type

 

06DE537

06DE824

 

06DE537

 

06DE537

06DE537

 

06EE250

 

Cylinders...Unloaders

 

6...2

6...2

 

6...2

 

6...2

6...2

 

4...1

 

No. 2 Type

 

Ð

06DA824

 

06DA824

 

06DA537

06DA537

 

06EA250

 

Cylinders (have no unloaders)

Ð

6

 

6

 

6

6

 

4

 

System Oil Charge (pints)

 

11

18

 

18

 

18

18

 

31

 

Unloader Settings (psig)

Loads

 

 

 

Compressor No. 1 Only

 

 

 

 

Unloader No. 2

 

 

71.0 ± 1.5

 

 

 

 

Ð

 

Unloads

 

 

57.5 ± 2.5

 

 

 

 

Ð

 

 

 

 

 

 

 

 

 

Unloader No. 1

Loads

 

 

75.0 ± 1.5

 

 

 

 

75.5 ± 1.5

 

Unloads

 

 

62.5 ± 2.5

 

 

 

 

58.0 ± 2.5

 

 

 

 

 

 

 

 

 

Capacity Steps (%)

 

100,67,33

100,83,67

 

100,80,60

 

100,80,60

100,83,67

 

100,75,

 

 

50,33,17

 

40,20

 

40,20

50,33,17

 

50,25

 

 

 

 

 

 

 

 

CONDENSER FANS

 

 

 

 

Propeller, Direct Drive

 

 

 

 

Motor Hp...Rpm...Frame (NEMA)

 

 

 

 

 

 

 

 

 

 

 

No. 1

 

 

 

1...1075...56 (Single phase)

 

 

 

 

 

No. 2

 

 

 

1...1140...56 (3 phase)

 

 

 

 

Nominal Cfm

No. 3

Ð

Ð

 

Ð

 

Ð

1...1140...56 (3 phase)

 

 

16,500

15,000

 

15,000

 

15,000

24,000

 

23,000

 

EVAPORATOR FANS*

 

 

 

 

Centrifugal, Belt Drive

 

 

 

 

Number...Size (in.)

 

2...15 × 15

2...15 × 15

 

2...15 × 15

 

2...15 × 15

3...15 × 9

 

3...15 × 9

 

Cfm (Nominal)

Std

6000

8000

 

10,000

 

10,000

12,000

 

12,000

 

Motor Hp...Rpm

5...1725

71¤2...1725

 

10...1725

 

10...1725

15...1725

 

15...1725

 

Alt

Ð

Ð

 

Ð

 

Ð

20...1725

 

20...1725

 

Fan Pulley

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Outside Diameter (in.)

 

10.6

10.6

 

8.0

 

8.0

8.0

 

8.0

 

Bore (in.)

Std

13¤16

13¤16

 

13¤16

 

13¤16

111¤16

 

111¤16

 

Fan Belt Number...Size

1...3V630

1...3V630

 

2...3V560

 

2...3V560

2...3V630

 

2...3V630

 

Alt

Ð

Ð

 

Ð

 

Ð

3...3V670

 

3...3V670

 

 

 

 

 

 

Motor Pulley

Std

 

 

 

Factory Installed

 

 

 

 

Outside Diameter (in.)

5.3

6.0

 

5.0

 

5.0

5.0

 

5.0

 

Alt

Ð

Ð

 

Ð

 

Ð

6.0

 

6.0

 

Bore (in.)

 

 

 

 

Std

11¤8

13¤8

 

13¤8

 

13¤8

15¤8

 

15¤8

 

Resulting Fan Rpm

880

995

 

1095

 

1095

1095

 

1095

 

Alt

Ð

Ð

 

Ð

 

Ð

1320

 

1320

 

 

 

 

 

 

Shaft Center Line Distance (in.)

18 ± 2.5

18 ± 2.5

 

18 ± 2.5

 

18 ± 2.5

21 ± 2.5

 

21 ± 2.5

 

Maximum Fan Rpm

 

1300

1300

 

1300

 

1300

1550

 

1550

 

CONDENSER COOLING COIL

 

Thermostatic Expansion Valve, Hot Gas Bypass

 

 

 

Face Area (sq ft)

 

6.8

6.8

 

6.8

 

6.8

10.2

 

10.2

 

Corrugated Fins/in. ...Rows

13...2

13...2

 

13...2

 

13...2

13...2

 

13...3

 

EVAPORATOR COILS (zone)

 

 

Solenoid Valve and Capillary Tube for each

 

 

 

Number...Face Area (sq ft/ea)

8...2.12

8...2.12

 

10...2.12

 

10...2.12

12...2.01

 

12...2.01

 

Corrugated Fins/in. ...Rows

13...3

13...3

 

13...3

 

13...3

12...3

 

15...3

 

HEATING SECTION (48MA)

 

 

One Heat Assembly in Each Zone Module

 

 

 

Rise Range

Total

 

 

 

25 F to 55 F at 0.75 in. wg ESP

 

 

 

 

Input (1000 Btuh)

432

432

 

540

 

540

648

 

648

 

Each Module

54

54

 

54

 

54

54

 

54

 

 

 

 

 

 

Bonnet Cap.² (1000 Btuh)

Total

324

324

 

405

 

405

486

 

486

 

Each Module

40.5

40.5

 

40.5

 

40.5

40.5

 

40.5

 

Burner Spud Qty...Size

 

2...38

2...38

 

2...38

 

2...38

2...38

 

2...38

 

OPTIONAL HEATING SECTION (50ME Electric)

 

 

 

 

 

 

 

 

 

 

Electric Heaters

 

 

Nichrome, Open-Wire Resistance Element in Each Zone Module

 

Qty...Elements (each)**

 

8...2 or 3

8...2 or 3

 

10...2 or 3

 

10...2 or 3

12...2 or 3

 

12...2 or 3

 

OPTIONAL HEATING SECTION

 

 

One Heating Coil in Each Zone Module

 

 

 

(50ME Glycol Coil)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Allowable Inlet Temperature (F)

 

 

 

 

200

 

 

 

 

Maximum Allowable Flow, Each Coil (Gpm)

 

 

 

 

6

 

 

 

 

 

Solution Mixture

 

 

 

 

20% Glycol

 

 

 

 

Maximum Allowable Working Pressure (Psig)

 

 

 

 

30

 

 

 

 

Total Internal Volume (Gal)

 

2.61

2.61

 

3.15

 

3.15

3.76

 

3.76

 

PRESSURE SWITCHES

Cutout

 

 

 

 

29 ± 5

 

 

 

 

Low-Pressure (Psig)

 

 

 

 

 

 

 

 

Cut-in

 

 

 

 

39 ± 5

 

 

 

 

 

 

 

 

 

 

 

 

 

High-Pressure (Psig)

Cutout

 

 

400 ± 5

 

 

 

 

Cut-in

 

 

300 ± 5

 

 

 

 

 

 

 

 

 

 

 

Indoor Air¯ow Switch (AFS1)

 

 

 

 

 

 

 

 

 

 

Factory Setting (cfm)

 

 

 

6000

 

 

 

9000

 

Adjustment Range (cfm)

 

 

4000-6000

 

 

6000-9000

 

INDOOR AIR FILTERS

 

 

 

 

 

 

 

 

 

 

 

Standard Qty...Size (in.)

 

 

 

12...20 × 25 × 2

 

 

 

 

High Efficiency (optional)

 

 

 

 

12...20 × 2 5 × 2 (36.5% Efficient)

 

 

 

 

Qty...Size (in.)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTDOOR AIR FILTERS

 

 

 

 

 

 

 

 

 

 

 

Qty...Size (in.)

 

 

2...20 × 25 × 1

 

 

2...32 × 35 × 1

 

LEGEND

ESP Ð

External Static Pressure

NEMA Ð

National Electrical Manufacturers Association

*Standard unit shipped with standard motor, pulley, and belt(s); alternate unit shipped with alternate motor, pulley, and belt(s).

²The heating efficiency rating is a product thermal efficiency rating determined under continuous operating conditions independent of any installed system. **See Field Power Supply Wiring section on page 10 and Table 4 for details.

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Contents Installation, Start-Up Service Instructions ContentsSafety Considerations InstallationBase Unit Physical Data and Dimensions 48MA Units Base Unit Physical Data and Dimensions 50ME Units Removing Shipping Shields Fig Roof Curb DetailPhysical Data Roof Curb Physical Data and Dimensions 48MA Units Roof Curb Physical Data and Dimensions 50ME Units Shipping Shield Locations Units Shown Suggested Gas Piping 48MA Unit 48MA Electrical Data Unit 50ME Electrical Data Unit 50ME Electrical Application Data Field Control Wiring ECTZone Control Board Component Location Cooling Cooling Stage 1 Ð First stage of modules 1, 2, Cooling Stage 1 Ð First stage of modules 1, 2, 3, Cooling Stage 1 Ð Modules 1 and 3 Stage 2 Ð Modules 2 Cooling Modules Setting Stage 1 Ð First stage of modules 1 Cooling Stage 1 Ð First stage of modules 1, 2, Cooling 50ME Two-Stage Heat, One-Stage Cool Ð 4 Module Joint Control Cooling Stage 1 Ð Modules 1 and 3 Stage 2 Ð Modules 2 Cooling Modules Setting HA1 HA2 START-UP APSGas Heat Lighting Procedure 48MA AdjustmentPressure Adjustment Natural GAS MGVSpoiler Screw Location Units with 2-ELEMENT Heaters Units with 3-ELEMENT HeatersCabinet Panels and Grilles ServiceAir¯ow Switches Condenser and OUTDOOR-AIR Cooling CoilsTo ADD or Remove OIL Compressor Capacity Control UnloadersHead Pressure Control LOW ChargeCondenser Fans Evaporator Fans and MotorFAN Shaft Bearing Removal Pulley Removal Forced-Draft Blower 48MAOptional Economizer Ð See Fig OperationEconomizer and Exhaust Damper Assemblies, Exploded View Page Page Packaged Service Training Page PRE-START-UP OUTDOOR-AIR TemperatureRETURN-AIR Temperature Model no Serial no Date Technician

48MA/50ME016-040 specifications

The Carrier 48MA/50ME016-040 series represents a significant advancement in the field of commercial HVAC systems, designed to provide reliable, efficient, and effective climate control solutions for various applications. These units are widely recognized for their durability and performance, making them a top choice for building owners and managers seeking optimal comfort and energy efficiency.

One of the main features of the Carrier 48MA/50ME series is its advanced scroll compressor technology. The scroll compressors are known for their reliability and efficiency, which leads to reduced energy consumption and lower operating costs. This high-efficiency design not only contributes to significant energy savings but also minimizes noise levels, enhancing the overall comfort of the environment.

The units are equipped with a unique microprocessor-based control system that offers precise temperature control and flexibility. This technology allows for easy integration with building management systems, enabling users to monitor and control their HVAC systems remotely, thereby optimizing performance and energy use. The programmable thermostats help to tailor the operation of the units to meet the specific needs of the users, ensuring maximum comfort at all times.

In addition to its robust performance features, the Carrier 48MA/50ME series also boasts a comprehensive line of options for customization. These options include various cooling capacities ranging from 16 to 40 tons, allowing the equipment to cater to different building sizes and requirements. The series is also designed with a compact footprint, making it suitable for rooftop installations where space is at a premium.

Another important characteristic of the series is its environmentally friendly refrigerant options. Carrier prioritizes the use of refrigerants with low global warming potential, contributing to a more sustainable approach to HVAC solutions. This commitment to environmental responsibility not only complies with regulations but also meets the increasing demand for greener technologies.

Furthermore, the robust construction of the Carrier 48MA/50ME series ensures long-lasting performance in even the harshest conditions. The units are designed to withstand various environmental factors, making them ideal for both commercial and industrial applications. Overall, the Carrier 48MA/50ME016-040 series stands out as a reliable choice for efficient and effective heating and cooling solutions, equipped with innovative technologies that prioritize performance, sustainability, and user comfort.
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