581a155-180 – Bryant 581C User Manual
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ARI* CAPACITY RATINGS — 581A155,180
LOW HEAT UNITS
HIGH HEAT UNITS
LEGEND
*Air Conditioning and Refrigeration Institute.
NOTES:
1. Rated in accordance with ARI Standards 360 and 270.
2. ARI ratings are net values, reflecting the effects of circulating fan
heat.
3. Ratings are based on:
Cooling Standard: 80 F db, 67 F wb indoor entering-air tempera-
ture and 95 F db air entering outdoor unit.
IPLV Standard: 80 F db, 67 F wb indoor entering-air temperature
and 80 F db outdoor entering-air temperature.
4.
All 581A155, 180 units are in compliance with ASHRAE 90.1-
1999 Energy Standard for minimum 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 — 581A155-180
*All units are 2-stage heat.
†Minimum heating cfm must be maintained to ensure proper heating operation.
NOTE: Minimum allowable temperature of mixed air entering the heat exchanger during first stage
heating is 45 F. There is no minimum mixed-air limitation during second-stage heating. For entering
air temperatures below 45 F, both stages of heat must be energized together to minimize conden-
sation issues and ensure proper unit operation. Mixed air below 35 F optional stainless steel heat
exchangers are recommended.
LOW OUTDOOR AIR TEMPERATURE
COOLING OPERATION LIMITS
AIR QUANTITY LIMITS (Cooling)
UNIT
581A
NOMINAL
TONS
NET COOLING
CAPACITY
(Btuh)
TOTAL
WATTS
EER
SOUND
RATING
(dB)
IPLV
155230
13
134,000
12,209
10.60
88
11.4
180275
15
180,000
17,064
10.50
88
11.4
UNIT
581A
NOMINAL
TONS
NET COOLING
CAPACITY
(Btuh)
TOTAL
WATTS
EER
SOUND
RATING
(dB)
IPLV
155300
13
134,000
12,218
10.60
88
11.4
180360
15
180,000
17,179
10.50
88
11.1
dB
— Sound Levels (decibels)
db
— Dry Bulb
EER — Energy Efficiency Ratio
IPLV — Integrated Part-Load Values
wb
— Wet Bulb
UNIT 581A
HEATING
INPUT (Btuh)
Stage 2/Stage 1*
OUTPUT
CAPACITY
(Btuh)
TEMPERATURE
RISE (F)
AGA STEADY
STATE
EFFICIENCY (%)
MINIMUM HEATING
CFM†
155230
230,000/172,000
186,000
15-45
81.0
3750
155300
300,000/225,000
243,000
30-60
81.0
3830
180275
275,000/206,000
223,000
15-45
81.0
4580
180360
360,000/270,000
292,000
20-50
81.0
5400
UNIT SIZE
581A
TEMPERATURE LIMIT (F)
Standard
Unit
Unit With
Low Ambient Kit
Unit With
Motormaster®
Control
155, 180
40
20
–20
UNIT 581A
MINIMUM CFM
MAXIMUM CFM
155
3900
6500
180
4500
7500