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Blower Performance Data
5-Speed ECM Constant Torque Motors
The 5-Speed ECM is a 'Constant Torque' ECM motor and
delivers air flow similar to a PSC but operates as efficiently as
an ECM Motor. Because it's an ECM Motor, the 5-Speed ECM
can ramp slowly up or down like the ECM motor. There are 5
possible speed taps available on the 5-Speed ECM motor with
#1 being the lowest airflow and #5 being the highest airflow.
These speed selections are preset at the time of manufacture
and are easily changed in the field if necessary.
If more than one tap are energized at the same time, built in
logic gives precedence to the highest tap number and allows
air flow to change with G, Y1, Y2 and W signals or with Fan,
CC, CC2, and E1 output signals. Each of those 5 speeds has
a specific 'Torque' value programmed into the motor for
Dual Capacity with 5-Speed ECM
Motor
Motor
T'stat
Model
Speed
Tap
Cnct.
High
5
W
Med High
4
Y2
024
Med
3
Med Low
2
Y1
Low
1
G
High
5
W
Y2
Med High
4
036
Med
3
Y1
Med Low
2
G
Low
1
W
High
5
Y2
Med High
4
048
Med
3
Y1
Med Low
2
G
Low
1
W
High
5
Y2
Med High
4
060
Med
3
Y1
Med Low
2
G
Low
1
W
High
5
Y2
Med High
4
072
Med
3
Y1
Med Low
2
G
Low
1
Factory speed settings are in Bold
Air flow values are with dry coil and standard filter
For wet coil performance first calculate the face velocity of the air coil (Face Velocity [fpm] = Airflow [cfm] / Face Area [sq ft]).
Then for velocities of 200 fpm reduce the static capability by 0.03 in. wg, 300 fpm by 0.08 in. wg, 400 fpm by 0.12in. wg., and 500 fpm by 0.16 in. wg.
Highest setting is for auxiliary heat (W) and lowest setting is for constant blower (G). The "Y1" and "Y2" settings must be between the "G" and "W"
settings.
Setting Blower Speed - 5-Speed ECM
5-Speed ECM blower motors have five (5) speeds of which
four (4) are selectable on dual capacity.
CAUTION: Disconnect all power before
performing this operation.
Blower
Motor
Size
HP
0
0.05
0.1
1024
1013 1002 988
932
917
902
9 x 7
1/2
835
826
816
765
747
729
665
656
647
1325
1319
1313 1293 1272
1279
1267 1254 1238 1222 1203 1184 1137 1089 1049 1008 926
9 x 7
1/2
1229
1218 1206 1187
1201
1184
1167
1007
989
971
1890
1874 1857 1845 1833 1809 1784 1769 1754 1736 1718 1672 1629 1601
1769
1754 1739 1721
11 x 10
1
1671
1652 1632 1614 1595 1576 1557 1536 1514 1494 1474 1430 1387
1574
1555 1535 1514 1492 1472 1452 1431 1410 1387 1363 1330 1284 1236
1388
1370 1352 1322 1292 1264 1236 1216 1195
2077 2066 2055 2044 2033 2017 2000 1966 1931 1904 1877 1841 1810
1948
1937 1925 1910 1895 1880 1865 1831 1797 1778 1759 1720 1707 1680 1660 1612
11 x 10
1
1810
1794 1778 1739 1700 1684 1667 1657 1646 1629 1612 1576 1583 1547
1680
1667 1653 1618
1594
1572 1550 1512
2402 2388 2373 2358 2343 2334 2325 2307 2289 2274 2258 2215 2177 2125 2052 1933
2209 2193 2177 2164
11 x 10
1
2085 2072 2058 2045 2031 2010 1989 1972 1954 1936 1918 1881 1852
1961
1951 1940 1926
1767
1751
1735 1715 1694 1678 1661 1640 1619 1602 1584 1548 1512
DUAL COMPRESSOR PACKAGED HEAT PUMP INSTALLATION GUIDE
each speed selection. As static pressure increases, airflow
decreases resulting in less torque on the rotor. The motor
responds only to changes in torque and adjusts its speed
accordingly.
The 5-Speed ECM motor is powered by line voltage but the
motor speed is energized by 24 VAC.
5-Speed ECM Benefits:
- High efficiency
- Soft start
- 5 speeds with up to 4 speeds on-line
- Built in logic allows air flow to change with G, Y1, Y2 and
W signals
- Super efficient low airflow continuous blower setting (G)
Airflow (cfm) at External Static Pressure (in. wg)
0.15
0.2
0.25
0.3
0.35 0.4
974
963
951
940 929
892
882
867
851
842
801
785
772
759
749
720
710
696
681
662 643
626
605
593
580
561
1242
1212 1158 1103 1058 1013 930
1167
1154
1140 1110 1079 1044 1008 929
1156
1145
1129
1113 1086 1058 1028 997
958
945
925
904 889
1703 1685 1666 1645 1623 1604 1585 1539 1499 1463
1583 1562 1540 1522 1503 1488 1473 1465 1449 1410
1474 1450 1426 1410 1393 1385 1376 1351 1325 1290
2151
2135
2118 2105 2092 2072 2052 2017 1982 1954
1911
1885 1859 1844 1829 1814 1798 1759 1727 1703
5-Speed ECM Motor Connections - Dual Capacity
C - Black
L - Orange
G - Green
G - Blue
Y1 - Red
17
0.45
0.5
0.6
0.7
901
872
785
691
832
817
802 756
661
738
719
700 677
636
627
611
581
515
541
519
496 443
392
839
836
829
914
808
873
862
850
818
778
1351
1178
1161 1095 984
1791
1821
1475
High Voltage
Connections
3/16 in.
C
L
G
N
N - Brown
AUX - Gray
3
4
5
1
2
Y2 - Tan
Low Voltage
Connections 1/4 in.
0.8
0.9
1.00
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1562 1522
1432 1376
1313
1173
1108 1014
916
842
787
1740 1653
1510 1480
1369 1319
1168 1085
1925 1844
1790 1751
1670 1636
1426 1397
7/30/14
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