Carrier SINGLE PACKAGE ROOFTOP UNITS ELECTRIC COOLING/GAS HEATING 48EJ Installation And Service Instructions Manual

Also see for 48EJ: Installation, Start-Up and Service Instructions User manual

Contents

Table 1 — Physical Data (cont)UNIT 48EJ,EK,EW,EY 038D/E 044D/E 048D/ENOMINAL CAPACITY (tons) 35 40 45OPERATING WEIGHT (lb)*UnitAl/Al† (Lo Heat/Hi Heat) 4442/4602 4668/4828 4955/5115Al/Cu† (Lo Heat/Hi Heat) 4727/4887 4953/5113 5335/5495Roof Curb (14-in. curb) 410 410 410COMPRESSORType Ckt 1 06D537 06EA250 06EA265Ckt 2 06D537 06EA250 06EA250Number of Refrigerant Circuits 2 2 2Oil (oz) (Ckt 1, Ckt 2) 115 ea. 224 ea. 304, 224REFRIGERANT TYPE R-22Operating Charge (lb-oz)Circuit 1** 34-0 35-0 41-0Circuit 2 34-0 35-0 41-0CONDENSER COIL Cross-Hatched 3 ⁄ 89 Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate FinsQuantity 2 2 1 1Rows...Fins/in. 3...15 3...15 4...15 3...15Total Face Area (sq ft) 58.3 58.3 66.7CONDENSER FAN Propeller TypeNominal Cfm 27,064 27,064 27,064Quantity...Diameter (in.) 4...30 4...30 4...30Motor Hp (1075 Rpm) 1 1 1EVAPORATOR COIL Cross-Hatched 3⁄ 89 Copper Tubes, Aluminum Plate Fins, Intertwined CircuitsRows...Fins/in. 3...15 3...15 4...15Total Face Area (sq ft) 34.7 34.7 34.7EVAPORATOR FAN Centrifugal TypeQuantity...Size (in.) 2...20x15 2...20x15 2...20x15Type Drive Belt Belt BeltNominal Cfm 14,000 16,000 18,000Motor Hp 10 15†† 20 15 20†† 25 20 25†† 30Motor Frame Size (Standard) S215T D254T S256T D254T S256T S284T S256T S284T S286T(High Efficiency) S215T S254T S256T S254T S256T S284T S256T S284T S286TMotor Bearing Type Ball Ball BallMaximum Allowable Rpm 1200 1200 1200Motor Pulley Pitch Diameter 6.1 5.3 5.7 5.3 5.7 7.5 6.3 5.9 7.5Nominal Motor Shaft Diameter (in.) 1 3⁄ 8 1 5⁄ 8 1 5 ⁄ 8 1 5⁄ 8 1 5 ⁄8 1 7⁄ 8 1 5⁄ 8 1 7 ⁄8 1 7⁄ 8Fan Pulley Pitch Diameter (in.) 13.7 9.5 9.5 9.5 9.5 11.1 11.1 12.5 11.1Nominal Fan Shaft Diameter (in.) 115⁄16 1 15⁄ 16 1 15⁄ 16Belt, Quantity...TypeBelt, Length (in.)1...5VX650652...5VX530532...5VX550552...5VX530532...5VX550552...5VX590592...5VX570572...5VX630632...5VX61059Pulley Center Line Distance (in.) 15.6-18.4 15.0-17.9 15.0-17.9 14.6-17.6 15.0-17.9 14.6-17.6Factory Speed Setting (rpm) 779 976 1050 976 1050 1182 993 1134 1182FURNACE SECTIONRollout Switch Cutout Temp (F)| 225 225 225Burner Orifice Diameter(in. ...drill size)Natural Gas Std .120...31 .120...31 .120...31Liquid Propane Alt .096...41 .096...41 .096...41Thermostat Heat AnticipatorSetting (amps)Stage 1 0.1 0.1 0.1Stage 2 0.1 0.1 0.1Gas Input (Btuh) Stage 1 Low 300,000 300,000 300,000High 600,000 600,000 600,000Stage 2 Low 400,000 400,000 400,000High 800,000 800,000 800,000Efficiency (Steady State) (%) 82 82 82Temperature Rise Range 10-40/30-60 10-40/30-60 10-40/30-60Manifold Pressure (in. wg)Natural Gas Std 3.5 3.5 3.5Liquid Propane Alt 3.5 3.5 3.5Gas Valve Quantity 2 2 2Field Gas Connection Size (in.-FPT) 1.5 1.5 1.5HIGH-PRESSURE SWITCH (psig)Cutout 426 426 426Reset (Auto.) 320 320 320LOW-PRESSURE SWITCH (psig)Cutout 7 7 7Reset (Auto.) 22 22 22OUTDOOR-AIR FILTERS 8...16 × 25Quantity...Size (in.) 4...20 × 25RETURN-AIR FILTERSQuantity...Size (in.) 10...20x24x2 10...20x24x2 10...20x24x2POWER EXHAUST Direct Drive, 3-Speed, Single-Phase motor (Factory-Wired for High Speed) and Forward Curved FanMotor, Quantity...Hp 4...1 4...1 4...1Fan, Diameter... Width (in.) 11...10 11...10 11...10LEGENDAl — AluminumCu — Copper*Weight of unit does not include variable frequency drive (VFD) barometric relief, or powerexhaust. If a VFD is installed, add the VFD weight in the table at right.†Evaporator coil fin material/condenser coil fin material.**Sizes 024-034: Circuit 1 uses the lower portion of condenser coil, Circuit 2 uses the upperportion. Sizes 038-048: Circuit 1 uses the left condenser coil, Circuit 2 the right. All unitshave intertwined evaporator coils.††Motor and drive shown will deliver approximately 2.5 in. wg net external static. SeeTable 2 for more information.\Rollout switch is manual reset.NOTE: High heat is for 48EJ,EW only.VFD(Hp)VFD WEIGHTS (lb)208/230 v 460 v 575 v5 20 22 607.5 51 37 6410 51 61 6415 61 63 10920 63 111 10925 105 112 17430 172 118 18011