30 | Fan Motor Options LV Heat Pump Series
LV Heat Pump Series8 733 944 336 (2016/09) Subject to change without prior notice
Constant Airflow Motors (ECM)
For installations where constant air delivery is critical or
where external static pressure drop can vary greatly
(such as with high MERV value filters) the LV series is
offered with a constant air flow ECM motor option. This
option provides ECM motor efficiency combined with a
constant air delivery across a wide range of external
static pressures. These motors dynamically adjust their
power output to precisely match the desired air flow on
a pre-programmed fan curve. Additionally these motors
feature:
1. A low CFM ventilation feature that circulates air at
70% of full load when fan only is called.
2. A passive dehumidification mode that reduces air
flow during a cooling call when dehumidification is
also required – this reduces the sensible heat ratio
of the cooling coil and extends cooling run time to
more effectively dehumidify. (refer to the ECM
Interface Board section of this manual)
3. 3 speed settings per model. Units are factory set to
“NORM” but can be field adjusted to “+” to increase
CFM by 15% or to “-“to reduce CFM by 15%. (refer
to the ECM Interface Board section of this manual)
4. A “TEST” mode that operates the motor at a 70%
torque setting. This setting can be used to diagnose
programming problems in the motor itself. (refer to
the ECM Interface Board section of this manual)
5. A CFM indicator light that provides a blink for each
100 CFM of air delivered (note that this blink code
is approximate and should not replace test and
balancing).
Model
Tap #
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
LV-048
1 1390 1370 1350 1320 - -------
2
1600 1580 1550 1530 1510 -------
3
1600 1730 1700 1670 1650 1630 1600 1580 1540 - ---
4
1830 1810 1780 1760 1740 1710 1670 1600 1520 ---
5
1930 1910 1880 1860 1830 1780 1720 1640 1540 1420 - -
LV-060
1 1900 1880 1860 1820 - -------
2
2000 1970 1950 1920 1890 1860 - -----
3
2000 2110 2090 2060 2030 2010 1970 1940 1910 1880 ---
4
2220 2200 2170 2140 2110 2080 2050 2060 2050 2000 1920 -
5
2340 2320 2290 2260 2230 2210 2180 2150 2110 2070 2000 1930
LV-070
1 2050 2010 1970 1930 - -------
2
2150 2120 2080 2030 1990 1960 - -----
3
2100 2270 2230 2200 2160 2120 2080 2040 2010 1980 ---
4
2390 2350 2320 2280 2250 2200 2160 2130 2100 2070 2030 -
5
2520 2480 2450 2420 2380 2330 2290 2260 2220 2170 2100 2020
updated 7/30/14
Table 8: Constant Torque Blower Motor Data
Refer to the constant air flow motor performance
tables for heat pump blower performance with the
constant air flow motor option.
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