Carrier 48AJ User Manual
Page 24
24
Table 1B — Physical Data — 48EJ,EK,EW,EY Units (cont)
*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
034D/E
044D/E
048D/E
NOMINAL CAPACITY (tons)
35
40
45
OPERATING WEIGHT (lb)
For Operating Weights see Table 2.
COMPRESSOR
Type Ckt 1
06D537
06EA250
06EA265
Ckt 2
06D537
06EA250
06EA250
Number of Refrigerant Circuits
2
2
2
Oil (oz) (Ckt 1, 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
″ Copper Tubes, Aluminum Lanced, Aluminum Pre-Coated, or Copper Plate Fins
Quantity
2
2
1
1
Rows...Fins/in.
4...15
4...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)
1
1
1
EVAPORATOR COIL
Cross-Hatched
3
/
8
″ Copper Tubes, Aluminum 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 (Standard)
S215T
D254T
S256T
D254T
S256T
S284T
S256T
S284T
S286T
(High Efficiency)
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
6.1
5.3
5.7
5.3
5.7
7.5
6.3
8.1
7.5
Nominal 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
/
8
Fan Pulley Pitch Diameter (in.)
13.7
9.5
9.5
9.5
9.5
11.1
11.1
12.5
11.1
Nominal Fan Shaft Diameter (in.)
1
15
/
16
1
15
/
16
1
15
/
16
Belt, Quantity...Type
1...5VX610
2...5VX530
2...5VX550
2...5VX530
2...5VX550
2...5VX590
2...5VX570
2...5VX630
2...5VX590
Belt, Length (in.)
61
53
55
53
55
59
57
63
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
Factory Speed Setting (rpm)
779
976
1050
976
1050
1182
993
1134
1182
FURNACE SECTION
Rollout Switch Cutout Temp (F)**
225
225
225
Burner Orifice Diameter
(in. ...drill size)
Natural Gas Std
.120...31
.120...31
.120...31
Liquid Propane Alt
.096...41
.096...41
.096...41
Thermostat Heat Anticipator
Setting (amps)
Stage 1
0.1
0.1
0.1
Stage 2
0.1
0.1
0.1
Gas Input (Btuh)
Stage 1 Low
303,500
303,500
303,500
High
607,000
607,000
607,000
Stage 2 Low
400,000
400,000
400,000
High
800,000
800,000
800,000
Efficiency (Steady State) (%)
82
82
82
Temperature Rise Range
10-40/30-60
10-40/30-60
10-40/30-60
Gas Pressure to Unit Range (in. wg)
5-13.5
5-13.5
5-13.5
Manifold Pressure (in. wg)
Natural Gas
Std
3.5
3.5
3.5
Liquid Propane
Alt
3.5
3.5
3.5
Gas Valve Quantity
2
2
2
Field Gas Connection Size
(in.-FPT)
1.5
1.5
1.5
HIGH-PRESSURE SWITCH (psig)
Cutout
426
426
426
Reset (Auto.)
320
320
320
LOW-PRESSURE SWITCH (psig)
Cutout
7
7
7
Reset (Auto.)
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
OUTDOOR-AIR FILTERS
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
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