Bryant 581A/B Product Information Manual page 14

UNIT NOMINAL
581A TONS
155230 13
180275 15
UNIT NOMINAL
581A TONS
155300 13
180360 15
LEGEND
dB — Sound Levels (decibels)
db — Dry Bulb
EER — Energy Efficiency Ratio
IPLV — Integrated Part-Load Values
wb — Wet Bulb
*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.
HEATING
UNIT 581A INPUT (Btuh)
Stage 2/Stage 1*
155230 230,000/172,000
155300 300,000/225,000
180275 275,000/206,000
180360 360,000/270,000
*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.
LOW OUTDOOR AIR TEMPERATURE
COOLING OPERATION LIMITS
TEMPERATURE LIMIT (F)
UNIT SIZE
Standard
581A
Unit Low Ambient Kit
155, 180 40
ARI* CAPACITY RATINGS — 581A155,180
NET COOLING
CAPACITY
(Btuh)
134,000
180,000
NET COOLING
CAPACITY
(Btuh)
134,000
180,000
HEATING CAPACITIES AND EFFICIENCIES — 581A155-180
OUTPUT
CAPACITY
(Btuh)
186,000
243,000
223,000
292,000
Unit With
Unit With
Motormaster®
Control
20 –20
LOW HEAT UNITS
TOTAL
WATTS
12,209
17,064
HIGH HEAT UNITS
TOTAL
WATTS
12,218
17,179
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://sol-
stice.crest.org/efficiency/bcap to determine if compliance with this
standard pertains to a given geographical area of the United
States.
TEMPERATURE
RISE (F)
15-45
30-60
15-45
20-50
AIR QUANTITY LIMITS (Cooling)
UNIT 581A
155
180
14
SOUND
EER RATING
(dB)
10.60 88
10.50 88
SOUND
EER RATING
(dB)
10.60 88
10.50 88
AGA STEADY
MINIMUM HEATING
STATE
EFFICIENCY (%)
81.0
81.0
81.0
81.0
MINIMUM CFM
3900
4500
IPLV
11.4
11.4
IPLV
11.4
11.1
CFM†
3750
3830
4580
5400
MAXIMUM CFM
6500
7500