—
7
—
Table 1 — Physical Data
LEGEND
*Circuit 1 uses the lower portion of condenser coil and lower portion of evaporator coils;
and Circuit 2 uses the upper portion of both coils.
†Rollout switch is manual reset.
**The 579F300 units requires 2-in. industrial-grade filters capable of handling face veloc-
ities of up to 625 ft/min (such as American Air Filter no. 5700 or equivalent).
NOTE:
The 579F180-300 units have a low-pressure switch (standard) located on the
suction side.
UNIT 579F
180
216
240
300
NOMINAL CAPACITY (tons)
15
18
20
25
OPERATING WEIGHT (lb)
1650
1800
1850
2000
EconoMi$erIV
90
90
90
90
Roof Curb
200
200
200
200
COMPRESSOR/MANUFACTURER
Scroll, Copeland
Quantity...Model (Ckt 1, Ckt 2)
2...SR*942AE
1...SM120
1...SR*782*AE
1...SM120
1...SM110
1...SM161
1...SM120
Number of Refrigerant Circuits
2
2
2
2
Stages of Capacity Control (%)
50/50
60/40
52/48
56/44
Oil (oz) (Ckt 1, Ckt 2)
90, 90
110, 72
110, 110
112, 110
REFRIGERANT TYPE
R-22
Expansion Device
TXV
Operating Charge (lb-oz)
Circuit 1*
10-13
15-2
16-3
21-0
Circuit 2
10- 5
11-5
14-8
15-4
CONDENSER COIL
Cross-Hatched
3
/
8
-in. Copper Tubes, Aluminum Lanced,
Aluminum Pre-Coated, or Copper Plate Fins
Rows...Fins/in.
2...17
3...15
3...15
4...15
Total Face Area (sq ft)
21.7
21.7
21.7
21.7
CONDENSER FAN
Propeller Type
Nominal Cfm
10,500
9250
13,650
12,500
Quantity...Diameter (in.)
3...22
3...22
2...30
2...30
Motor Hp...Rpm
1
/
2
...1050
1
/
2
...1050
1...1075
1...1075
Watts Input (Total)
1100
1100
3400
3400
EVAPORATOR COIL
Cross-Hatched
3
/
8
-in. Copper Tubes, Aluminum Lanced or Copper Plate Fins, Face Split
Rows...Fins/in.
2...17
3...15
3...15
4...15
Total Face Area (sq ft)
17.5
17.5
17.5
17.5
EVAPORATOR FAN
Centrifugal Type
Quantity...Size (in.)
2...10 x 10
2...12 x 12
2...12 x 12
2...12 x 12
Type Drive
Belt
Belt
Belt
Belt
Nominal Cfm
6000
7200
8000
10,000
Motor Hp
3.7
5
7.5
10
Motor Nominal Rpm
1725
1745
1745
1740
Maximum Continuous Bhp
4.25
5.90
8.7 [208/230 v]
9.5 [460 v]
10.2 [208/230 v]
11.8 [460 v]
Motor Frame Size
56H
184T
213T
215T
Fan Rpm Range
Low-Medium Static
891-1179
910-1095
1002-1225
1066-1283
High Static
1227-1550
1069-1287
1193-1458
1332-1550
Motor Bearing Type
Ball
Ball
Ball
Ball
Maximum Allowable Rpm
1550
1550
1550
1550
Motor Pulley Pitch Diameter
Low-Medium Static
3.1/4.1
4.9/5.9
5.4/6.6
4.9/5.9
Min/Max (in.)
High Static
3.7/4.7
4.9/5.9
5.4/6.6
4.9/5.9
Nominal Motor Shaft Diameter (in.)
7
/
8
1
1
/
8
1
3
/
8
1
3
/
8
Fan Pulley Pitch Diameter (in.)
Low-Medium Static
6.0
9.4
9.4
8.0
High Static
5.2
8.0
7.9
6.4
Nominal Fan Shaft Diameter (in.)
1
3
/
16
1
7
/
16
1
7
/
16
1
7
/
16
Belt, Quantity...Type...Length (in.)
Low-Medium Static
1...BX...42
1...BX...50
1...BX...54
2...BX...50
High Static
1...BX...42
1...BX...48
1...BX...50
2...BX...47
Pulley Center Line Distance (in.)
13.5-15.5
13.3-14.8
14.6-15.4
14.6-15.4
Speed Change per Full Turn of
Movable Pulley Flange (rpm)
Low-Medium Static
48
37
37
36
High Static
55
34
44
45
Movable Pulley Maximum Full Turns
From Closed Position
6
6
6
6
Factory Speed Pulley Setting
3.5
3.5
3.5
3.5
Factory Speed Setting (rpm)
Low-Medium Static
1035
1002
1120
1182
High Static
1389
1178
1328
1470
FURNACE SECTION (Low Heat/High Heat)
Rollout Switch Cutout Temp (F)†
190
190
190
190
Burner Orifice Diameter (in. ...drill size)
Natural Gas
0.1285...30/
0.136...29
0.1285...30/
0.136...29
0.1285...30/
0.136...29
0.1285...30/
0.136...29
Thermostat Heat Anticipator Setting (amps)
208/230 v
Stage 1
0.98
0.98
0.98
0.98
Stage 2
0.44
0.44
0.44
0.44
460 v
Stage 1
0.80
0.80
0.80
0.80
Stage 2
0.44
0.44
0.44
0.44
Gas Input
Stage 1
206,000/270,000
206,000/270,000
206,000/270,000
206,000/270,000
Stage 2
275,000/360,000
275,000/360,000
275,000/360,000
275,000/360,000
Efficiency (Steady State) (%)
81
81
81
81
Temperature Rise Range
15-45/20-50
15-45/20-50
15-45/20-50
15-45/20-50
Manifold Pressure (in. wg)
Natural Gas
3.3
3.3
3.3
3.3
Gas Valve Quantity
1
1
1
1
Field Gas Connection Size (in.-FPT)
3
/
4
3
/
4
3
/
4
3
/
4
HIGH-PRESSURE SWITCH (psig)
Cutout
426
Reset (Auto)
320
LOW-PRESSURE SWITCH (psig)
Cutout
27
Reset (Auto)
44
FREEZE PROTECTION THERMOSTAT (F)
Opens
30
±
5
Closes
45
±
5
OUTDOOR-AIR INLET SCREENS
Cleanable
Quantity...Size (in.)
2...20 x 25 x 1
1...20 x 20 x 1
RETURN-AIR FILTERS
Throwaway**
Quantity...Size (in.)
4...20 x 20 x 2
4...16 x 20 x 2
POWER EXHAUST
1
/
2
Hp, 208/230-460 v Motor Direct Drive, Propeller-Fan (Factory-Wired for 460 v)
Bhp
—
Brake Horsepower
TXV
—
Thermostatic Expansion Valve
