BLOWER RELAY | CHANGING BLOWER SPEED | |
| ||
5 | BLOWER RELAY | PLASTIC CAPS |
|
| |
| HARNESS |
|
| BLUE (MED) | RED (L0) |
2 |
|
|
|
| BLACK (HI) |
|
| YELLOW (COM) |
Figure 13. Changing Blower Speed
NOTE — Refer to wiring diagram located on the unit access panel (or figure 13 above) and blower performance (table 2).
SAll air data measured external to unit with 1 inch
SAll factory settings are medium speed except the
SAll data given while air handler is operating with a dry DX coil.
Table 2. CBX25UH Blower Performance
Air Handler | Blower Speed | .10” WC | .20” WC | .30” WC | .40” WC | .50” WC | |
Model | |||||||
|
|
|
|
|
| ||
| Low (Red) | 510 | 495 | 475 | 420 | 325 | |
18 | Med (Blue) | 670 | 650 | 630 | 595 | 505 | |
| High (Black) | 905 | 865 | 820 | 770 | 705 | |
| Low (Red) | 630 | 625 | 615 | 610 | 580 | |
24 | Med (Blue) | 885 | 875 | 850 | 820 | 780 | |
| High (Black) | 1130 | 1100 | 1070 | 1010 | 950 | |
| Low (Red) | 900 | 865 | 830 | 780 | 740 | |
30 | Med (Blue) | 1075 | 1060 | 1030 | 985 | 940 | |
| High (Black) | 1240 | 1210 | 1170 | 1135 | 1085 | |
| Low (Red) | 1160 | 1140 | 1115 | 1085 | 990 | |
36 | Med (Blue) | 1500 | 1445 | 1385 | 1300 | 1200 | |
| High (Black) | 1660 | 1575 | 1495 | 1405 | 1390 | |
| Low (Red) | 1325 | 1315 | 1300 | 1275 | 1225 | |
42 | Med (Blue) | 1490 | 1465 | 1440 | 1395 | 1315 | |
| High (Black) | 1820 | 1770 | 1690 | 1600 | 1500 | |
| Low (Red) | 1775 | 1710 | 1645 | 1565 | 1470 | |
48 | Med (Blue) | 1995 | 1895 | 1800 | 1685 | 1560 | |
| High (Black) | 2070 | 1970 | 1850 | 1719 | 1595 | |
| Low (Red) | 1675 | 1630 | 1580 | 1520 | 1450 | |
60 | Med (Blue) | 1965 | 1925 | 1875 | 1800 | 1695 | |
| High (Black) | 2140 | 2085 | 2000 | 1895 | 1795 |
SBlower Performance (CFM vs. ESP inches H2O)
SCooling speeds should not be reduced below factory setting.
SUnits with electric heat approved at 0.5” maximum and medium blower speed minimum.
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CBX25UH SERIES