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UNIT
551B
036
048
060
072
Bhp — Brake Horsepower
*Extensive motor and electrical testing on these units ensures that the full horsepower range of the
motors can be utilized with confidence. Using your fan motors up to the ratings shown in this table will
not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.
AIRFLOW
(Cfm)
0.1
Rpm
900
581
1000
644
1100
687
1200
733
1300
754
1400
810
1500
841
AIRFLOW
(Cfm)
0.7
Rpm
900
957
1000
992
1100
1013
1200
1045
1300
1075
1400
1110
1500
1150
LEGEND
Bhp — Brake Horsepower Input to Fan
NOTES:
1. Boldface indicates a field-supplied drive is required. (See
Note 5.)
2. Maximum continuous bhp is 1.20. Extensive motor and electrical test-
ing on these units ensures that the full range of the motor can be
utilized with confidence. Using your fan motors up to the ratings shown
will not result in nuisance tripping or premature motor failure. Unit
warranty will not be affected.
Table 5 — Evaporator-Fan Motor Data
UNIT
PHASE
Single
Three
Single
Three
Single
Three
Three
LEGEND
Table 6 — 551B036 Air Delivery — Vertical Discharge Units
0.2
Bhp
Rpm
Bhp
0.12
673
0.18
0.19
709
0.22
0.22
746
0.26
0.26
785
0.32
0.29
826
0.38
0.35
868
0.45
0.42
911
0.53
0.8
Bhp
Rpm
Bhp
0.39
988
0.43
0.44
1039
0.49
0.49
1068
0.55
0.56
1090
0.64
0.64
1122
0.70
0.73
1160
0.84
0.82
1190
1.00
MAXIMUM
UNIT
CONTINUOUS
VOLTAGE
BHP*
1.20
208/230
208/230
1.20
460
575
1.20
208/230
208/230
1.20
460
575
1.80
208/230
208/230
1.80
460
575
208/230
2.40
460
575
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.3
0.4
Rpm
Bhp
Rpm
736
0.22
805
782
0.28
835
806
0.30
867
843
0.35
903
891
0.43
942
937
0.51
984
985
0.61
1029
BELT-DRIVE MOTOR
External Static Pressure (in. wg)
0.9
1.0
Rpm
Bhp
Rpm
1039
0.45
1061
1061
0.51
1086
1090
0.58
1109
1109
0.64
1156
1152
0.72
1190
1181
0.81
1237
1225
0.90
1271
3. Values include losses for filters, unit casing, and wet coils.
4. Use of a field-supplied motor may affect wire sizing. Contact your
local representative to verify.
5. Motor drive range: 760 to 1090. All other rpms require field-supplied
drive.
6. Interpolation is permissible. Do not extrapolate.
7. Minimum allowable cfm is 300 cfm/ton.
—21—
MAXIMUM
AMP
DRAW
5.4
5.4
2.4
2.4
5.4
5.4
2.4
2.4
9.7
6.4
2.9
2.9
6.4
2.9
2.9
0.5
Bhp
Rpm
Bhp
0.25
865
0.29
0.30
900
0.35
0.35
929
0.40
0.41
960
0.47
0.48
991
0.53
0.57
1032
0.62
0.66
1073
0.72
1.1
Bhp
Rpm
Bhp
0.47
1083
0.53
0.55
1111
0.59
0.61
1127
0.64
0.68
1203
0.71
0.76
1228
0.80
0.85
1293
0.89
0.95
1317
1.00
0.6
Rpm
Bhp
911
0.34
937
0.38
964
0.40
994
0.50
1047
0.60
1067
0.67
1109
0.77
1.2
Rpm
Bhp
1105
0.57
1136
0.63
1145
0.67
1250
0.74
1266
0.84
1349
0.93
1363
1.05
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