24 | Fan Motor Options SV Heat PumpSeries
SV Heat Pump Series8 733 914 818 (2014?08) Subject to change without prior notice
Constant Torque Motors (ECM)
For installations where the efficiency of an
electronically commutated brushless DC motor
(ECM) motor is required, but the features of a
constant airflow motor are not required, the SV
series is offered with a constant torque ECM motor
option. These motors feature up to 90% thermal
efficiency combined with a flatter fan curve than a
PSC motor and simple operation. These motors
are provided with 5 speed taps to allow for a wide
range of air flow and external static options. To
change a speed tap follow the instructions below:
1. Disconnect power to the heat pump.
2. Remove the blower access panel.
3. Remove the speed tap wire from the terminal it
is currently connected to and connect it to the
terminal desired.
Refer to the constant torque motor performance
tables for heat pump blower performance with the
constant torque motor option.
SV-041
Low 990 990 970 950 920 860 - -----
Med
1220 1190 1150 1120 1080 1020 940 -----
Hi
1200 1450 1380 1320 1250 1190 1120 1040 960 - ---
SV-042
Low 1210 1210 1190 1160 1120 1080 - -----
Med
1460 1450 1430 1390 1330 1250 1160 -- ---
Hi
1400 1750 1710 1670 1620 1560 1460 1330 1210 1080 ---
SV-048
Low 1450 1440 1420 1400 1360 1320 - -----
Med
1700 1670 1630 1580 1530 1470 1400 -- ---
Hi
1600 1930 1870 1810 1740 1670 1600 1520 1430 1340 ---
SV-060
Low 1560 1550 1540 1530 1505 1475 1440 1400 - ---
Med
1890 1880 1870 1860 1825 1790 1730 1670 1590 1500 - -
Hi
2000 2220 2200 2150 2100 2050 2000 1940 1870 1800 1700 1590 -
SV-070
Low 1570 1560 1550 1540 1530 1505 1475 1440 1400 ---
Med
1900 1890 1880 1870 1860 1825 1790 1730 1670 1590 1500 -
Hi
2100 2240 2220 2200 2150 2100 2050 2000 1940 1870 1800 1700 1590
Note: 575V models employ 1 speed motors (high only)
Table 5: PSC Motor Performance Data
Model
Fan
Speed
Rated
Airflow
0.10 0.20 0.30 0.40 0.50 0.60 0.70 0.80 0.90 1.00 1.10 1.20
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