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Table 1 — Physical Data (cont)
UNIT 50EJ,EK,EW,EY 038 044 048
NOMINAL CAPACITY (tons) 35 40 45
OPERATING WEIGHT (lb)*
Unit
Al/Al† 4282 4508 4795
Al/Cu† 4567 4793 5175
Roof Curb (14-in. curb) 410 410 410
COMPRESSOR
Type Ckt 1 06D537 06EA250 06EA265
Ckt 2 06D537 06EA250 06EA250
Number of Refrigerant Circuits 22 2
Oil (oz) (Ckt1, Ckt 2) 115 ea. 224 ea. 304, 224
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1** 34-0 35-0 41-0
Circuit 2 34-0 35-0 41-0
CONDENSER COIL Cross-Hatched
3
⁄
8
Љ Copper Tubes, Aluminum Lanced or Copper Fins
Quantity 2211
Rows...Fins/in. 3...15 3...15 4...15 3...15
Total Face Area (sq ft) 58.3 58.3 66.7
CONDENSER FAN Propeller Type
Nominal Cfm 27,064 27,064 27,064
Quantity...Diameter (in.) 4...30 4...30 4...30
Motor Hp (1075 Rpm) 11 1
EVAPORATOR COIL Cross-Hatched
3
⁄
8
Љ Copper Tubes, Aluminum or Copper Plate Fins, Intertwined Circuits
Rows...Fins/in. 3...15 3...15 4...15
Total Face Area (sq ft) 34.7 34.7 34.7
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) 2..20x15 2...20x15 2...20x15
Type Drive Belt Belt Belt
Nominal Cfm 14,000 16,000 18,000
Motor Hp 10 15†† 20 15 20†† 25 20 25†† 30
Motor Frame Size S215T S254T S256T S254T S256T S284T S256T S284T S286T
Motor Bearing Type Ball Ball Ball
Maximum Allowable Rpm 1200 1200 1200
Motor Pulley Pitch Diameter 4.1 6.9 7.5 6.9 8.1 9.1 5.3 5.9 7.5
Nominal Motor Shaft Diameter (in.) 1
3
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
5
⁄
8
1
1
⁄
8
1
5
⁄
8
1
7
⁄
8
1
7
⁄
8
Fan Pulley Pitch Diameter (in.) 9.1 12.5 12.5 12.5 13.7 13.7 9.1 9.1 11.1
Nominal Fan Shaft Diameter (in.) 1
11
⁄
16
1
11
⁄
16
1
11
⁄
16
Belt, Quantity...Type 1...BX51 1...5VX630 1...5VX650 1...5VX630 1...5VX670 2...5VX680 1...5VX550 2...5VX560 2...5VX610
Belt, Length (in.) 54 63 65 63 67 68 55 56 59
Pulley Center Line Distance (in.) 15.6-18.4 15.0-17.9 15.0-17.9 14.6-17.6 15.0-17.9 14.6-17.6 14.6-17.6
Factory Speed Setting (rpm) 788 966 1050 1066 1035 1162 1019 1135 1182
HIGH-PRESSURE SWITCH (psig)
Cutout 426 426 426
Reset (Auto.) 320 320 320
LOW-PRESSURE SWITCH (psig)
Cutout 77 7
Reset (Auto.) 22 22 22
RETURN-AIR FILTERS
Quantity...Size (in.) 10...20x24x2 10...20x24x2 10..20x24x2
OUTDOOR-AIR FILTERS 8...16x25 8...16x25 8...16x25
Quantity...Size (in.) 4...20x25 4...20x25 4...20x25
POWER EXHAUST Direct Drive, 3-Speed, Single-Phase Motor (Factory-Wired For High Speed) and Forward Curved Fan
Motor, Quantity...Hp 4...1
Fan, Diameter...Width (in.) 11...10
LEGEND
Al — Aluminum
Cu — Copper
*Weightofunit doesnotinclude variablefrequency drive(VFD),barometric relief,or power
exhaust. If a VAV unit (a VFD is installed), add the VFD weight in the table at right.
†Evaporator coil fin material/condenser coil fin material.
**Sizes024-034: Circuit1 usesthelower portionof condensercoil, Circuit2 usesthe upper
portion. Sizes 038-048:Circuit 1 usesthe left condensercoil, Circuit 2 theright.All units
have intertwined evaporator coils.
††Motor and driveshown will deliver approximately 2.5in. wg net externalstatic. For more
drive information, see Table 2.
NOTES:
1. See Table 2 for optional evaporator fan motor data.
2. Sizes 038 and 048 are 50EJ,EW units only.
VFD
(Hp)
VFD WEIGHTS (lb)
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