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—11—
Table 1B — Physical Data (580F091, 103, 121, 151 [ASHRAE 90.1-1999 Compliant Units]) (cont)
LEGEND
*Evaporator coil fin material/condenser coil fin material. Contact your local repre-
sentative for details about coated fins.
†Weight of 14-in. roof curb.
**Rollout switch lockout is manually reset by interrupting power to unit or resetting
thermostat.
NOTE: High-static motor not available on size 150 and 151 units.
UNIT SIZE 580F 091 103 121 151
FURNACE SECTION
Rollout Switch Cutout
Temp (F)** 195 195 195 195
Burner Orifice Diameter
(in. ...drill size)
Natural Gas Std LOW .120...31 .120...31 .120...31 .120...31
MED .120...31 .120...31 .120...31 .129...30
HIGH .120...31 .120...31 .129...30 —
Liquid Propane Alt LOW .096...41 .096...41 .096...41 .096...41
MED .096...41 .096...41 .096...41 .102...38
HIGH .096...41 .096...41 .102...38 —
Thermostat Heat Anticipator
Setting (amps)
208/230 v and 575 Stage 1 .14 .14 .14 .14
Stage 2 .20 .20 .20 .20
460v Stage1 .14 .14 .14 .14
Stage 2 .20 .20 .20 .20
Gas Input (Btuh) Stage 1 LOW 125,000 125,000 120,000 180,000
MED 120,000 120,000 180,000 200,000
HIGH 180,000 180,000 200,000 —
Stage 2 LOW — — 180,000 220,000
MED 180,000 180,000 220,000 250,000
HIGH 220,000 220,000 250,000 —
Efficiency (Steady
State)(%) 80 80 80 80
Temperature Rise Range LOW 20-50 20-50 35-65 35-65
MED 35-65 35-65 35-65 40-70
HIGH 45-75 45-75 40-70 —
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 1111
Gas Valve Pressure Range
Psig 0.180-0.487 0.180-0.487 0.180-0.487 0.180-0.487
in. wg 5.0-13.5 5.0-13.5 5.0-13.5 5.0-13.5
Field Gas Connection
Size (in.) LOW
1
/
2
1
/
2
3
/
4
3
/
4
MED
3
/
4
3
/
4
3
/
4
3
/
4
HIGH
3
/
4
3
/
4
3
/
4
—
HIGH-PRESSURE SWITCH (psig)
Standard Compressor 450 ± 50 500 ± 50
Internal Relief (Differential)
Cutout 428 428
Reset (Auto.) 320 320
LOW-PRESSURE SWITCH (psig)
7±3
Cutout
Reset (Auto.) 22 ± 7
FREEZEPROTECTION
THERMOSTAT (F)
Opens 30 ± 5
Closes 45 ± 5
OUTDOOR-AIR INLET SCREENS Cleanable. Screen size and quantity varies by option selected.
RETURN-AIR FILTERS Throwaway
Quantity...Size (in.) 4...16 x 20 x 2 4...16 x 20 x 2 4...20 x 20 x 2 4...20 x 20 x 2
Al — Aluminum
Bhp— Brake Horsepower
Cu — Copper