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ARI* CAPACITY RATINGS (cont)
HEATING CAPACITIES AND EFFICIENCIES — 581B036-150(cont)
208/230/460-3-60 — SINGLE-STAGE GAS HEAT — LOW NOx
208/230/460-3-60 — 2-STAGE GAS HEAT
LEGEND
AFUE — Annual Fuel Utilization Efficiency
NOTE: Capacities for stainless steel heat exchanger units are the same as standard units.
UNIT
581B
INPUT CAPACITY OUTPUT CAPACITY
TEMPERATURE
RISE (°F)
MINIMUM HEATING
AIRFLOW (CFM)
EFFICIENCY
AFUE (%) Steady State (%)
036060N 60,000 50,000 20-50 930 80.2 81.2
036090N 90,000 74,000 30-60 1150 81.0 81.4
048060N 60,000 50,000 20-50 930 80.2 81.2
048090N 90,000 74,000 30-60 1150 81.0 81.4
048120N 120,000 101,000 40-70 1340 80.7 82.4
060060N 60,000 50,000 20-50 930 80.2 81.2
060090N 90,000 74,000 30-60 1150 81.0 81.4
060120N 120,000 101,000 40-70 1340 80.7 82.4
UNIT
581B
INPUT CAPACITY OUTPUT CAPACITY TEMPERATUR
E
RISE (°F)
MINIMUM
HEATING
AIRFLOW (CFM)
EFFICIENCY
1st Stage 2nd Stage 1st Stage 2nd Stage AFUE (%) Steady State (%)
036072 50,000 72,000 41,000 59,040 25-55 1004 82.8 82.0
036115 82,000 115,000 65,600 93,150 55-85 1002 80.0 80.0
048072 50,000 72,000 41,000 59,040 25-55 1004 82.8 82.0
048115 82,000 115,000 66,420 93,150 35-65 1330 81.0 81.0
048150 120,000 150,000 96,000 120,000 50-80 1390 80.4 80.0
060072 50,000 72,000 41,000 59,040 25-55 1004 82.8 82.0
060115 82,000 115,000 66,420 93,150 35-65 1330 81.0 81.0
060150 120,000 150,000 96,000 120,000 50-80 1370 80.4 80.0
072072 50,000 72,000 41,000 59,040 25-55 1220 82.0 82.0
072115 82,000 115,000 66,420 93,150 35-65 1330 81.0 81.0
072150 120,000 150,000 96,000 120,000 50-80 1390 80.0 80.0
090125 90,000 125,000 73,800 102,500 20-50 1900 82.0 82.0
090180 120,000 180,000 98,400 147,600 35-65 1440 82.0 82.0
090224 180,000 224,000 147,600 183,680 45-75 2230 82.0 82.0
102125 90,000 125,000 73,800 102,500 20-50 1900 82.0 82.0
102180 120,000 180,000 98,400 147,600 35-65 1440 82.0 82.0
102224 180,000 224,000 147,600 183,680 45-75 2230 82.0 82.0
120180 120,000 180,000 98,400 147,600 35-65 1440 82.0 82.0
120224 180,000 224,000 147,600 183,680 35-65 2570 82.0 82.0
120250 200,000 250,000 160,000 200,000 40-70 2650 80.0 80.0
150224 180,000 224,000 147,600 183,680 35-65 2570 82.0 82.0
150250 200,000 250,000 160,000 200,000 40-70 2650 80.0 80.0