Carrier 48AJ/AK/AMD020, Руководство по установке

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Table 1 — Physical Data — 50AJ,AK,AW,AY Units (cont)
LEGEND †Sizes 020-040: Circuit 1 uses the lower portion of condenser coil, Circuit 2 uses the
upper portion.
Sizes 050-060: Circuit 1 uses the left condenser coil, Circuit 2 the right. All units have
intertwined evaporator coils.
UNIT 50AJ,AK,AW,AY 035 040 050 060
NOMINAL CAPACITY (tons)
35 40 50 60
BASE UNIT See Operating Weights Table
OPERATING WEIGHT (lb)
COMPRESSOR
Quantity...Type (Ckt 1, Ckt 2)
1…SR*812AT,
1…SR*942AT/2…SR*942AT
2…SR*942AT/2…SM125 2…SM125/1…SM125, 1…SM175
1...SM160,1...SM175/
1...SM160,1...SM175
Number of Refrigerant Circuits
2 2 2 2
Oil (oz) (Ckt 1, Ckt 2)
Precharged Precharged Precharged Precharged
REFRIGERANT TYPE R-22
Operating Charge (lb-oz)
Circuit 1 33-0 34-8 56-8 77-0
Circuit 2 38-0 45-8 52-8 75-0
CONDENSER COIL†
Cross-Hatched 3 /
8
″
Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate Fins
Quantity
1 2 2 2
Rows...Fins/in.
4...15 2...15 / 4…15 4...15 4…15
Total Face Area (sq ft)
33.3 66.7 66.7 100
CONDENSER FAN Propeller Type
Nominal Cfm 14,500 30,000 25,600 38,400
Quantity...Diameter (in.) 2...30 4...30 4...30 6...30
Motor Hp 1 1 1 1
EVAPORATOR COIL
Cross-Hatched Copper Tubes, Aluminum Plate Fins
Tube Size (in.)
1 /
2
1 /
2
1 /
2
1 /
2
Rows...Fins/in.
6...16 4...16 6...16 4...17
Total Face Area (sq ft)
31.3 31.3 31.3 48.1
EVAPORATOR FAN Centrifugal Type
Quantity...Size (in.) 2...20 X 15 2...20 X 15 2...20 X 15 3...20 X 15
Type Drive Belt Belt Belt Belt
Nominal Cfm 14,000 16,000 18,000 24,000
Motor Hp 15 20 25 15 20 25 20 25 30 25 30 40
Motor Frame Size 254T 256T 284T 254T 256T 284T 256T 284T 286T 284T 286T 324T
Motor Bearing Type Ball Ball Ball Ball
Maximum Allowable Rpm 1300 1300 1300 1200
Motor Pulley Pitch Diameter 5.1 5.7 6.2 5.3 5.7 7.5 5.7 6.2 6.7 5.3 5.9 6.5
Nominal Motor Shaft Diameter (in.) 1 5 /
8
1 5 /
8
1 7 /
8
1 5 /
8
1 5 /
8
1 7 /
8
1 5 /
8
1 7 /
8
1 7 /
8
1 7 /
8
1 7 /
8
2 1 /
8
Fan Pulley Pitch Diameter (in.) 8.7 8.7 8.7 9.5 9.5 11.1 9.5 9.5 9.5 9.1 9.5 9.5
Nominal Fan Shaft Diameter (in.) 1 15 /
16
1 15 /
16
1 15 /
16
1 15 /
16
Belt Quantity 2 2 2 2 2 2 2 2 2 3 3 3
Belt Type 5VX500 5VX530 5VX550 5VX530 5VX550 5VX590 5VX550 5VX570 5VX570 5VX530 5VX550 5VX570
Belt Length (in.) 50 53 55 53 55 59 55 57 57 53 55 57
Pulley Center Line Distance (in.) 15.0-17.9 15.0-17.9 15.0-17.9 15.0-17.9 15.0-17.9 14.6-17.6 15.0-17.9 14.6-17.6 14.6-17.6 15.2-17.5 14.7-17.2 14.2-17.0
Factory Speed Setting (rpm) 1025 1147 1247 976 1050 1182 1050 1142 1234 1019 1087 1197
HIGH-PRESSURE SWITCH (psig)
Cutout
426 426 426 426
Reset (Auto.)
320 320 320 320
RETURN-AIR FILTERS
Quantity...Size (in.) Standard 10...20 x 24 x 2 10...20 x 24 x 2 10...20 x 24 x 2 16...20 x 24 x 2
Pleated
5...20 x 20 x 4
5...20 x 24 x 4 5...20 x 20 x 4
5...20 x 24 x 4 5...20 x 20 x 4
5...20 x 24 x 4 8...20 x 20 x 4
8...20 x 24 x 4
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
8...16 x 25 x 2 12...16 x 25 x 2
4...20 x 25 x 2 6...20 x 25 x 2
POWER EXHAUST Direct Drive, Single-Phase Motors (Factory-Wired for High Speed Operation), Forward-Curved Fan Wheels with Backdraft Dampers on Each Fan Housing
Motor, Quantity...Hp 4...1 6...1
Fan, Diameter...Width (in.) 11 x 10 11 x 10
Al —
Aluminum
Cu —
Copper