UNIT
NOMINAL
581C
TONS
024
2
036
3
048
4
060
5
LEGEND
EER
—
Energy Efficiency Ratio
SEER
—
Seasonal Energy Efficiency Ratio
*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.
UNIT
INPUT CAPACITY
581C
1st Stage
Stage
024050
50,000
036072
72,000
036115
115,000
048072
72,000
048115
115,000
048150
150,000
060072
72,000
060115
115,000
060150
150,000
UNIT
INPUT CAPACITY
581C
1st Stage
2nd Stage
024050N
50,000
036060N
60,000
036090N
90,000
048060N
60,000
048090N
90,000
048120N
120,000
060060N
60,000
060090N
90,000
060120N
120,000
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).
**ARI* CAPACITY RATINGS — 581C024-060
COOLING
(Btuh)
24,000
36,200
46,000
59,000
HEATING CAPACITIES AND EFFICIENCIES — 581C024-060
208/230-1-60 — SINGLE-STAGE GAS HEAT
OUTPUT CAPACITY
2nd
1st Stage
2nd Stage
—
40,500
—
—
59,040
—
—
92,000
—
—
58,000
—
—
92,000
—
—
118,000
—
—
58,000
—
—
92,000
—
—
118,000
—
208/230-1-60 — SINGLE-STAGE GAS HEAT — LOW NOx
OUTPUT CAPACITY
1st Stage
2nd Stage
—
40,500
—
—
50,000
—
—
74,000
—
—
50,000
—
—
74,000
—
—
101,000
—
—
50,000
—
—
74,000
—
—
101,000
—
TOTAL
SEER
kW
3.2
14.1
4.1
14.0
5.5
14.0
6.7
14.0
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.
TEMPERATURE
MINIMUM HEATING
RISE (°F)
AIRFLOW (CFM)
25-65
25-55
55-85
25-55
35-65
50-80
25-55
35-65
50-80
TEMPERATURE
MINIMUM HEATING
RISE (°F)
AIRFLOW (CFM)
25-65
20-50
30-60
20-50
30-60
40-70
20-50
30-60
40-70
14
SOUND RATING
EER
(decibels)
12.0**
76
11.8**
76
11.7**
76
11.9
80
EFFICIENCY
AFUE (%)
575
81.00
1004
82.80
1002
80.00
1004
82.80
1320
81.00
1396
80.40
1004
82.80
1327
81.00
1314
80.40
EFFICIENCY
AFUE (%)
575
81.00
930
80.20
1150
81.00
930
80.20
1150
81.00
1340
80.70
930
80.20
1150
81.00
1340
80.70
Steady State
(%)
81
82
80
82
81
80
82
81
80
Steady State (%)
81
81
81
81
81
82
81
81
82