Carrier WEATHERMAKER 48AJ User Manual
Page 14
14
Table 1 — Physical Data — 48AJ,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 041-060: Circuit 1 uses the left condenser coil, Circuit 2 the right. All units have
intertwined evaporator coils.
†Rollout switch is manual reset.
UNIT 48AJ,AK,AW,AY
035
036
040
041
NOMINAL CAPACITY (tons)
35
35
40
40
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
1…SR*812AT,
1…SR*942AT/2…SR*942AT
2…SR*942AT/2…SM125
2…SR*942AT/2…SM125
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
36-0
36-0
47-0
Circuit 2
38-0
58-0
47-0
47-0
CONDENSER COIL*
Internally Enhanced,
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
2 ... 15 / 4 … 15
4...15/4…15
Total Face Area (sq ft)
33.3
66.7
66.7
66.7
CONDENSER FAN
Propeller Type
Nominal Cfm
14,500
30,000
30,000
30,000
Quantity... Diameter (in.)
2 ... 30
4...30
4 ... 30
4...30
Motor Hp
1
1
1
1
EVAPORATOR COIL
Internally Enhanced Copper Tubes, Aluminum Plate Fins with Intertwined Circuits
Tube Size (in.)
1
/
2
1
/
2
1
/
2
1
/
2
Rows ... Fins/in.
6 ... 16
4...17
4 ... 16
4...17
Total Face Area (sq ft)
31.3
31.3
31.3
31.3
EVAPORATOR FAN
Centrifugal Type
Quantity ... Size (in.)
2 ... 20 X 15
2...20 X 15
2 ... 20 X 15
2...20 X 15
Type Drive
Belt
Belt
Belt
Belt
Nominal Cfm
14,000
14,000
16,000
16,000
Motor Hp
15
20
25
15
20
25
15
20
25
15
20
25
Motor Frame Size
254T
256T
284T
254T
256T
284T
254T
256T
284T
254T
256T
284T
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Allowable Rpm
1300
1300
1300
1300
Motor Pulley Pitch Diameter (in.)
5.1
5.7
6.2
5.3
5.7
7.5
5.3
5.7
7.5
5.3
5.7
7.5
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
5
/
8
1
7
/
8
1
5
/
8
1
5
/
8
1
7
/
8
Fan Pulley Pitch Diameter (in.)
8.7
8.7
8.7
9.5
9.5
11.1
9.5
9.5
11.1
9.5
9.5
11.1
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
2
2
2
Belt Type
5VX500
5VX530
5VX550
5VX530
5VX550
5VX590
5VX530
5VX550
5VX590
5VX530
5VX550
5VX590
Belt Length (in.)
50
53
55
53
55
59
53
55
59
53
55
59
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
15.0-17.9
14.6-17.6
15.0-17.9
15.0-17.9
14.6-17.6
Factory Speed Setting (rpm)
1005
1147
1247
976
1050
1182
976
1050
1182
976
1050
1182
FURNACE SECTION
Supply Line Pressure Range
5.0-in. wg min/13.5-in. wg max.
Rollout Switch Cutout
Temp (F)†
225
225
225
225
Burner Orifice Diameter (in ...drill size)
Natural Gas
Std
.111 ... 34
.120...31
.120 ... 31
.120...31
Liquid Propane
Alt
.089 ... 43
.096...41
.096 ... 41
.096...41
Thermostat Heat Anticipator Setting
Stage 1 (amps)
0.24
0.1
0.24
0.1
Stage 2 (amps)
0.13
0.1
0.13
0.1
Gas Input (Btuh) Stage 1
(Low Heat/High Heat)
262,500/394,000
300,000/600,000
300,000/600,000
300,000/600,000
Stage 2
(Low Heat/High Heat)
350,000/525,000
400,000/800,000
400,000/800,000
400,000/800,000
Efficiency (Steady State) (%)
82
82
82
82
Temperature Rise Range
15-45/35-65
10-40/30-60
10-40/3 -60
10-40/30-60
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
2
2
2
2
HIGH-PRESSURE SWITCH (psig)
Cutout
426
426
426
426
Reset (Auto.)
320
320
320
320
MIXED-AIR FILTERS
Quantity ... Size (in.) Standard
10 ... 20 x 24 x 2
10...20 x 24 x 2
5...20 x 20 x 4
5...20 x 20 x 4
10 ... 20 x 24 x 2
10...20 x 24 x 2
5...20 x 20 x 4
5...20 x 20 x 4
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
OUTDOOR-AIR FILTERS
Quantity...Size (in.)
8...16 x 25 x 2
4...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
Fan, Diameter...Width (in.)
11 x 10
Al
— Aluminum
Cu
— Copper