Table 1 — physical data – Carrier 48MA/50ME016-040 User Manual
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Table 1 — 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 — 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
—
06DA824
06DA824
06DA537
06DA537
06EA250
Cylinders (have no unloaders)
—
6
6
6
6
4
System Oil Charge (pints)
11
18
18
18
18
31
Unloader Settings (psig)
Compressor No. 1 Only
Unloader No. 2
Loads
71.0 ± 1.5
—
Unloads
57.5 ± 2.5
—
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
50,33,17
100,80,60
40,20
100,80,60
40,20
100,83,67
50,33,17
100,75,
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)
No. 3
—
—
—
—
1...1140...56 (3 phase)
Nominal Cfm
16,500
15,000
15,000
15,000
24,000
23,000
EVAPORATOR FANS*
Centrifugal, Belt Drive
Number...Size (in.)
2...15 Ч 15
2...15 Ч 15
2...15 Ч 15
2...15 Ч 15
3...15 Ч 9
3...15 Ч 9
Cfm (Nominal)
6000
8000
10,000
10,000
12,000
12,000
Motor Hp...Rpm
Std
5...1725
7
1
⁄
2
...1725
10...1725
10...1725
15...1725
15...1725
Alt
—
—
—
—
20...1725
20...1725
Fan Pulley
Outside Diameter (in.)
10.6
10.6
8.0
8.0
8.0
8.0
Bore (in.)
1
3
⁄
16
1
3
⁄
16
1
3
⁄
16
1
3
⁄
16
1
11
⁄
16
1
11
⁄
16
Fan Belt Number...Size
Std
1...3V630
1...3V630
2...3V560
2...3V560
2...3V630
2...3V630
Alt
—
—
—
—
3...3V670
3...3V670
Motor Pulley
Factory Installed
Outside Diameter (in.)
Std
5.3
6.0
5.0
5.0
5.0
5.0
Alt
—
—
—
—
6.0
6.0
Bore (in.)
1
1
⁄
8
1
3
⁄
8
1
3
⁄
8
1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
Resulting Fan Rpm
Std
880
995
1095
1095
1095
1095
Alt
—
—
—
—
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
25 F to 55 F at 0.75 in. wg ESP
Input (1000 Btuh)
Total
432
432
540
540
648
648
Each Module
54
54
54
54
54
54
Bonnet Cap.† (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
(50ME Glycol Coil)
One Heating Coil in Each Zone Module
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
Low-Pressure (Psig)
Cutout
29 ± 5
Cut-in
39 ± 5
High-Pressure (Psig)
Cutout
400 ± 5
Cut-in
300 ± 5
Indoor Airflow Switch (AFS1)
Factory Setting (cfm)
6000
9000
Adjustment Range (cfm)
4000-6000
6000-9000
INDOOR AIR FILTERS
Standard Qty...Size (in.)
12...20 Ч 25 Ч 2
High Efficiency (optional)
Qty...Size (in.)
12...20 Ч 25 Ч 2 (36.5% Efficient)
OUTDOOR AIR FILTERS
Qty...Size (in.)
2...20 Ч 25 Ч 1
2...32 Ч 35 Ч 1
LEGEND
ESP
— External Static Pressure
NEMA — National Electrical Manufacturers Association
*Standard unit shipped with standard motor, pulley, and belt(s); alternate unit shipped with alternate motor, pulley, and belt(s).
†The 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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