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Table 1A — Physical Data; 034, 044 Units
BASE UNIT* 034 044
NOMINAL CAPACITY (tons) 30 40
OPERATING WEIGHT (lb)
Base Unit
48 Series, Low Heat 5641 6541
48 Series, High Heat
5770 6670
50 Series, Horizontal Discharge 5970 6620
50 Series, Vertical Discharge 5400 6050
With Economizer
48 Series, Low Heat 5941 6841
48 Series, High Heat 6070 6970
50 Series, Horizontal Discharge 6270 6920
50 Series, Vertical Discharge 5700 6350
COMPRESSORS
Semi-Hermetic
Quantity...Type 2...06D 2...06E
Capacity Steps (%) 17, 33, 50, 66, 83, 100 25, 50, 75, 100
Number of Refrigerant Circuits 22
REFRIGERANT
Operating Charge (lb), Sys 1/Sys 2
Without Hot Gas Bypass
29.0/29.0 40.0/40.0
With Hot Gas Bypass 31.0/29.0 42.0/40.0
CONDENSER COILS
3
⁄
8
-in. Tube Diameter
Quantity 22
Rows...Fins/in.
Aluminum
3...15.0 3...15.0
Copper (Optional) 3...13.7 3...13.7
Total Face Area (sq ft) 37.5 50.0
EVAPORATOR COILS
1
⁄
2
-in. Tube Diameter
Quantity
12
Rows...Fins/in. 3...15.0 3...15.0
Total Face Area (sq ft) 32.1 45.5
Refrigerant Feed Device...No. per Circuit TXV...1 TXV...2
HEATING SECTION (48 Series Units Only) Low Heat High Heat Low Heat High Heat
Number of Heat Exchangers
612612
Input (MBtuh) 264 529 264 529
Output (MBtuh) 211 423 211 423
Temperature Rise Range (F) 0-30 15-45 0-30 15-45
Efficiency (%) 79 79 79 79
Burner Orifice Diameter
Quantity (in. ...drill no.) 6 (.1285...30) 12 (.1285...30) 6 (.1285...30) 12 (.1285...30)
Pilot Orifice Diameter
Quantity (in. ...drill no.) 1 (.076...48) 2 (.076...48) 1 (.076...48) 2 (.076...48)
Firing Stages 2222
Number of Gas Valves
1212
CONDENSER FANS Propeller Type
Quantity...Diameter (in.) 2...30 3...30
Nominal Cfm 18,600 26,000
Motor Hp...Rpm 1.0...1140 1.0...1140
EVAPORATOR FAN Centrifugal 25 x 25 in.
Nominal Cfm 10,500 14,000
Maximum Allowable Cfm 15,000 20,000
Maximum Allowable Rpm 900 900
Shaft Diameter at Pulley (in.) 1
11
⁄
16
1
11
⁄
16
EVAPORATOR-FAN MOTOR AND DRIVE (Any motor available on any unit)
Motor Hp 7.5 10.0 15.0 20.0
Motor Frame Size 213T 215T 254T 256T
Efficiency at Full Load (%)
Standard Efficiency 82.9 85.6 84.5 87.5
High Efficiency† — 89.5 90.0 91.0
Fan Pulley Pitch Diameter (in.) 13.7 13.7 13.7 13.7
Motor Pulley Pitch Diameter (in.) 34.4 4.3 4.9 5.5
Resulting Fan Rpm 405 510 580 660
Belts Quantity...Model No.
48 Series and 50 Series, Horizontal Discharge 2...BX60 2...5VX630 2...5VX630 2...5VX630
50 Series, Vertical Discharge 2...BX60 2...5VX630 2...5VX630 2...5VX630
Center Distance Range (in.)
48 Series and 50 Series, Horizontal Discharge 17.74...14.30 17.74...14.30 17.63...14.01 17.63...14.01
50 Series, Vertical Discharge 19.86...15.87 19.86...15.87 19.04...15.00 19.04...15.00
OPTIONAL POWER EXHAUST Centrifugal, 15 x 15 in. (Any motor available on any unit)
Quantity...Motor Hp 2...3.0 2...5.0 2...7.5
Motor Frame Size 56HZ 184T 213T
Efficiency at Full Load (%) 81.0 84.0 82.9
Fan Pulley Pitch Diameter (in.) 6.9 6.9 6.9
Motor Pulley Pitch Diameter (in.) 3.35 4.12 5.0
Shaft Diameter at Pulley (in.) 1
3
⁄
16
1
3
⁄
16
1
3
⁄
16
Resulting Fan Rpm 843 1040 1264
Maximum Allowable Rpm 1300 1300 1300
Belts Quantity...No. 2...3VX670 2...3VX670 2...3VX710
FILTERS
Standard Efficiency Throwaway (Standard) 12...20 x 25 x 2 12...20 x 25 x 2
Quantity...Size (in.) 4...16 x 20 x 2 4...16 x 20 x 2
Medium Efficiency (30%) Pleated (Optional) 12...20 x 25 x 2 12...20 x 25 x 2
Quantity...Size (in.) 4...16 x 20 x 2 4...16 x 20 x 2
High Efficiency (90%) Bag Filters with Prefilters (Optional) 6...20 x 24 x 22 6...20 x 24 x 22
Quantity...Size (in.) 6...20 x 20 x 22 6...20 x 20 x 22
TXV — Thermostatic Expansion Valve
*Data is for all 48 and 50 Series units of the size listed unless otherwise specified.
†Not available on 575-v units.
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