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**ARI* CAPACITY RATINGS — 581C024-060 LEGEND
*Air-Conditioning & Refrigeration Institute.
**ARI does not require EER ratings for unit with capacity below 65,000 Btuh. For
these units, the EER rating at ARI standard conditions is provided for informa-
tion only.
NOTES:
1. Rated in accordance with ARI Standard 210-94 or 360-93.
2. Ratings are net values, reflecting the effects of circulating fan heat.
3. Ratings are based on:
Cooling Standard: 80 F db, 67 wb indoor entering-air temperature and 95 F
db outdoor entering-air temperature.
IPLV Standard: 80 F db, 67 F wb indoor entering-air temperature and 80 F
db outdoor entering-air temperature.
4. All 581C024-060 units are in compliance with ASHRAE 90.1 2001, 2004
Energy Standard for minimum SEER and EER requirements. Refer to state
and local codes or visit the following website: http://bcap-energy.org to
determine if compliance with this standard pertains to a given geographical
area of the United States.
HEATING CAPACITIES AND EFFICIENCIES — 581C024-060
208/230-1-60 — SINGLE-STAGE GAS HEAT
208/230-1-60 — SINGLE-STAGE GAS HEAT — LOW NOx
AFUE — Annual Fuel Utilization Efficiency
NOTE: Capacities for stainless steel heat exchanger units (S/R/T) are the same
as standard units (D/E/F).
UNIT
581C NOMINAL
TONS COOLING
(Btuh) TOTAL
kW SEER EER SOUND RATING
(decibels)
024 2 24,000 3.2 14.1 12.0** 76
036 3 36,200 4.1 14.0 11.8** 76
048 4 46,000 5.5 14.0 11.7** 76
060 5 59,000 6.7 14.0 11.9 80
EER — Energy Efficiency Ratio
SEER — Seasonal Energy Efficiency Ratio
UNIT INPUT CAPACITY OUTPUT CAPACITY TEMPERATURE MINIMUM HEATING EFFICIENCY
581C 1st Stage 2nd
Stage 1st Stage 2nd Stage RISE (°F) AIRFLOW (CFM) AFUE (%) Steady State
(%)
024050 50,000 — 40,500 — 25-65 575 81.00 81
036072 72,000 — 59,040 — 25-55 1004 82.80 82
036115 115,000 — 92,000 — 55-85 1002 80.00 80
048072 72,000 — 58,000 — 25-55 1004 82.80 82
048115 115,000 — 92,000 — 35-65 1320 81.00 81
048150 150,000 — 118,000 — 50-80 1396 80.40 80
060072 72,000 — 58,000 — 25-55 1004 82.80 82
060115 115,000 — 92,000 — 35-65 1327 81.00 81
060150 150,000 — 118,000 — 50-80 1314 80.40 80
UNIT INPUT CAPACITY OUTPUT CAPACITY TEMPERATURE MINIMUM HEATING EFFICIENCY
581C 1st Stage 2nd Stage 1st Stage 2nd Stage RISE (°F) AIRFLOW (CFM) AFUE (%) Steady State (%)
024050N 50,000 — 40,500 — 25-65 575 81.00 81
036060N 60,000 — 50,000 — 20-50 930 80.20 81
036090N 90,000 — 74,000 — 30-60 1150 81.00 81
048060N 60,000 — 50,000 — 20-50 930 80.20 81
048090N 90,000 — 74,000 — 30-60 1150 81.00 81
048120N 120,000 — 101,000 — 40-70 1340 80.70 82
060060N 60,000 — 50,000 — 20-50 930 80.20 81
060090N 90,000 — 74,000 — 30-60 1150 81.00 81
060120N 120,000 — 101,000 — 40-70 1340 80.70 82