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FLEXX BH Airflow Setup

Proper airflow is critical for optimal comfort as it avoids common circulation issues such as inconsistent temperatures, cold drafts, and humidity throughout the home. Irregular airflow can also lead to frequent system errors, shortened lifespan of equipment, and warranty callbacks due to the HVAC system getting overworked.

Dip Switch Settings

Understand how to properly adjust the dip switch settings on a GREE FLEXX central air system to provide the highest level of comfort and keep the system functioning optimally.

  1. Any changes to dip switch settings must be done while power is off.
  2. Blower motor will NOT operate if dip switch configuration does not meet what is shown below for each setting.
  3. Dip switches will be viewed in an upside-down orientation when Indoor Unit is installed vertically, and will change orientation in a Horizontal Left and Horizontal Right installation.
  4. See the Fan Performance section below for details of Static Pressure and CFM.

Installing a FLEXX System: Fan Speed

Learn how to properly setup a FLEXX system by measuring static and CFM along with selecting the correct fan speed.

Dip Switch Settings by Model & Fan Speed

Model FLEXX24HP230V1BH
Level HEAT (SA2) COOL (SA1)
Speed 1
Speed 2
Speed 3
Speed 4
Speed 5
Speed 6
Speed 7
Speed 8
Model FLEXX36HP230V1BH
Level HEAT (SA2) COOL (SA1)
Speed 1
Speed 2
Speed 3
Speed 4
Speed 5
Speed 6
Speed 7
Speed 8
Model FLEXX48HP230V1BH
Level HEAT (SA2) COOL (SA1)
Speed 1
Speed 2
Speed 3
Speed 4
Speed 5
Speed 6
Speed 7
Speed 8
Model FLEXX60HP230V1BH
Level HEAT (SA2) COOL (SA1)
Speed 1
Speed 2
Speed 3
Speed 4
Speed 5
Speed 6
Speed 7
Speed 8

Fan Performance

How to Read the Static/CFM Chart:

On the CFM chart, you can match what the installation requires with your static & CFM readings, and adjust your fan speed accordingly. Just find your level of static pressure at the top of the chart, your fan speed on the left-most column of the chart, and line up where they meet to determine your optimal CFM per ton. For example, if you have .3 static at Speed 4 on your CFM chart, you have around 350-400 CFM per ton (1160 * .3).

Model FLEXX24HP230V1BH
Static Pressure (In W.c.) and CFM
Level 0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1 1030 900 840 - - - - - - - - -
Speed 2 1080 960 900 840 - - - - - - - -
Speed 3 1220 1120 1060 990 850 - - - - - - -
Speed 4 1390 1290 1240 1180 1070 960 - - - - - -
Speed 5 1580 1490 1440 1390 1290 1180 1090 970 830 - - -
Speed 6 1720 1640 1600 1550 1450 1360 1250 1130 960 - - -
Speed 7 1800 1730 1680 1630 1550 1460 1370 1270 1150 970 830 -
Speed 8 1850 1820 1790 1740 1660 1580 1500 1410 1340 1200 1080 930
Model FLEXX36HP230V1BH
Static Pressure (In W.c.) and CFM
Level 0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1 1150 1050 950 880 - - - - - - - -
Speed 2 1200 1100 1000 940 850 - - - - - - -
Speed 3 1380 1260 1200 1100 950 - - - - - - -
Speed 4 1550 1460 1390 1310 1160 1010 830 - - - - -
Speed 5 1710 1650 1600 1560 1480 1400 1310 1210 1080 930 - -
Speed 6 1840 1800 1750 1710 1640 1590 1500 1420 1330 1220 1100 960
Model FLEXX48HP230V1BH
Static Pressure (In W.c.) and CFM
Level 0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1 1640 1500 1450 1350 - - - - - - - -
Speed 2 1680 1560 1500 1380 1300 - - - - - - -
Speed 3 1810 1690 1620 1550 1380 - - - - - - -
Speed 4 1930 1830 1770 1710 1580 1430 1280 - - - - -
Speed 5 2200 2110 2040 1980 1860 1720 1620 1490 1380 - - -
Speed 6 2240 2190 2145 2100 2010 1870 1750 1615 1500 1380 - -
Speed 7 2280 2240 2200 2180 2130 2080 2000 1880 1750 1600 1420 -
Speed 8 2300 2260 2220 2190 2140 2090 2040 1980 1930 1800 1700 1550
Model FLEXX60HP230V1BH
Static Pressure (In W.c.) and CFM
Level 0 0.1 0.15 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Speed 1 1660 1540 1470 1400 - - - - - - - -
Speed 2 1850 1720 1650 1600 1400 - - - - - - -
Speed 3 1920 1800 1730 1650 1480 1315 - - - - - -
Speed 4 2110 2000 1950 1860 1760 1640 1490 1325 - - - -
Speed 5 2250 2200 2190 2140 2040 1930 1800 1670 1520 1370 - -
Speed 6 2260 2220 2200 2170 2090 2010 1910 1760 1650 1550 1430 1380
Speed 7 2300 2260 2230 2200 2150 2115 2050 1990 1920 1840 1750 1660
Speed 8 2320 2280 2250 2230 2190 2140 2080 2040 2000 1950 1920 1890
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