Bryant 551A, User Manual

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162
PERFORMANCE DATA (cont)
FAN PERFORMANCE — 551A155,180 UNITS (cont)
LEGEND
*Standard low-medium static drive range is 910 to 1095 rpm. Alternate high-static drive range is
1069 to 1287. Other rpms require a field-supplied drive.
NOTES:
1. Maximum continuous bhp for the standard motor is 6.13. The maximum continuous watts
is 5180. Do not adjust motor rpm such that motor maximum bhp and/or watts is
exceeded at the maximum operating cfm.
2. See below for general fan performance notes.
GENERAL FAN PERFORMANCE NOTES
NOTES:
1. Values include losses for filters, unit casing, and wet coils. See below for
accessory/factory-installed option static pressure information.
2. Extensive motor and electrical testing on these units ensures that the full
range of the motor can be utilized with confidence. Using your fan motors up
to the wattage ratings shown will not result in nuisance tripping or premature
motor failure. Unit warranty will not be affected. See Evaporator-Fan Motor
Performance table on page 163 for additional information.
3. Use of a field-supplied motor may affect wire sizing. Contact your Bryant
representative for details.
4. Interpolation is permissible. Do not extrapolate.
ACCESSORY/FIOP STATIC PRESSURE (in. wg)* — 551A155,180
LEGEND *The static pressure must be added to external static pressure. The sum and the
evaporator entering-air cfm should then be used in conjunction with the Fan Per-
formance tables to determine blower rpm and watts.
ACCESSORY/FIOP STATIC PRESSURE (in. wg) — 551A155,180 UNITS
LEGEND NOTES:
1. Heaters are rated at 240 v and 480 v.
2. The factory assembled horizontal adapter substantially improves fan
performance.
3. The static pressure must be added to external static pressure. The sum and
the evaporator entering-air cfm should then be used in conjunction with the
Fan Performance table to determine blower rpm, bhp, and watts.
551A180* (cont)
Cfm
Available External Static Pressure (in. wg)
2.2 2.4 2.6 2.8 3.0 3.2
Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp Rpm Watts Bhp
4500 1276 3509 4.12 1326 3805 4.46 1375 4107 4.82 1421 4414 5.18 1467 4728 5.55 1511 5047 5.92
4800 1287 3721 4.36 1336 4020 4.72 1384 4326 5.07 1430 4638 5.44 1475 4955 5.81 — — —
5100 1299 3949 4.63 1347 4253 4.99 1395 4563 5.35 1440 4879 5.72 — — — — — —
5700 1325 4458 5.23 1373 4772 5.60 1418 5091 5.97 — — — — — — — — —
6000 1340 4741 5.56 1387 5060 5.93 — — — — — — — — — — — —
6300 1356 5043 5.91 — — — — — — — — — — — — — — —
6600 — — — — — — — — — — — — — — — — — —
6900 — — — — — — — — — — — — — — — — — —
7200 — — — — — — — — — — — — — — — — — —
7500 — — — — — — — — — — — — — — — — — —
Bhp — Brake Horsepower
FIOP — Factory-Installed Option
Watts — Input Watts to Motor
COMPONENT
CFM
4500 5000 5400 6000 7200 7500 9000 10,000 11,250
EconoMi$er 0.040 0.050 0.060 0.070 0.090 0.100 0.110 0.120 0.140
Perfect Humidity™ Dehumidification Package 0.045 0.048 0.060 0.071 0.103 0.111 0.160 0.197 0.250
FIOP — Factory-Installed Option
UNIT
551A HEATER
RATED VOLTAGE
CFM
ELECTRIC HEATERS
PRESSURE DROP (kW)
ECONOMIZER
PRESSURE DROP
155,180
208/240-3-60
3,750 0.05 (14/19, 26/34) 0.06 (42/56) 0.07 (56/75) 0.03
4,000 0.05 (14/19, 26/34) 0.06 (42/56) 0.07 (56/75) 0.04
5,000 0.07 (14/19, 26/34) 0.08 (42/56) 0.10 (56/75) 0.05
6,000 0.09 (14/19, 26/34) 0.12 (42/56) 0.15 (56/75) 0.07
7,200 0.11 (14/19, 26/34) 0.16 (42/56) 0.20 (56/75) 0.09
7,500 0.12 (14/19, 26/34) 0.17 (42/56) 0.21 (56/75) 0.10
480-3-60
3,750 0.05 (15, 32) 0.06 (55) 0.07 (80) 0.03
4,000 0.05 (15, 32) 0.06 (55) 0.07 (80) 0.04
5,000 0.07 (15, 32) 0.08 (55) 0.10 (80) 0.05
6,000 0.09 (15, 32) 0.12 (55) 0.15 (80) 0.07
7,200 0.11 (15, 32) 0.15 (55) 0.20 (80) 0.09
7,500 0.12 (15, 32) 0.17 (55) 0.21 (80) 0.10
FIOP — Factory-Installed Option
0TF
Q0
04-
01
2
55
1A1
55-
1
8
0