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Table 1B — Physical Data — 48EJ,EK,EW,EY Units
*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.
†Motor and drive shown will deliver approximately 2.5 in. wg net external static. For more information, see Table 3.
**Rollout switch is manual reset.
NOTE: High heat is for 48EJ,EW only.
UNIT 48EJ,EK,EW,EY 024D/E 028D/E 030D/E 034D/E
NOMINAL CAPACITY (tons) 20 25 27.5 30
OPERATING WEIGHT (lb) For Operating Weights see Table 2.
COMPRESSOR
Type Ckt 1 06D328 06D328 06D537 06D537
Ckt 2 06D818 06D328 06D328 06D537
Number of Refrigerant Circuits 22 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 11 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) 11 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 10† 15 7.5 10† 15 10 15† 20 10 15† 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 4.9 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.) 1
1
/
8
1
3
/
8
1
5
/
8
1
3
/
8
1
3
/
8
1
5
/
8
1
3
/
8
1
5
/
8
1
5
/
8
1
3
/
8
1
5
/
8
1
5
/
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.) 1
15
/
16
1
15
/
16
1
15
/
16
1
15
/
16
Belt, Quantity...Type 1...BX56 2...BX50 2...5VX530 1...BX56 1...5VX570 2...5VX530 2...BX50 2...5VX500 2...5VX530 2...BX50 2...5VX530 2...5VX530
Belt, Length (in.) 56 50 53 56 59 57 50 50 53 50 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 Orifice 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 265,600 265,600 265,600 265,600
High 398,400 398,400 398,400 398,400
Stage 2 Low 350,000 350,000 350,000 350,000
High 525,000 525,000 525,000 525,000
Efficiency (Steady State) (%) 82 82 82 82
Temperature Rise Range 15-45/35-65 15-45/35-65 15-45/35-65 15-45/35-65
Gas Pressure to Unit Range (in. wg) 5-13.5 5-13.5 5-13.5 5-13.5
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 22 2 2
Field Gas Connection Size
(in.-FPT) 1.5 1.5 1.5 1.5
HIGH-PRESSURE SWITCH (psig)
Cutout 426 426 426 426
Reset (Auto.) 320 320 320 320
LOW-PRESSURE SWITCH (psig)
Cutout 77 7 7
Reset (Auto.) 22 22 22 22
RETURN-AIR FILTERS (W x H x T)
Quantity...Size (in.) 10...20 x 24 x 2 10...20 x 24 x 2 10...20 x 24 x 2 10...20 x 24 x 2
OUTDOOR-AIR FILTERS 8...16 x 25 8...16 x 25 8...16 x 25 8...16 x 25
Quantity...Size (in.) 4...20 x 25 4...20 x 25 4...20 x 25 4...20 x 25
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