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507787-01C mrcool.com Page 17 of 22
2
BLUE (MED)
RED (L0)
BLACK (HI)
YELLOW (COM)
5
BLOWER RELAY
BLOWER RELAY
PLASTIC CAPS
4-PIN
BLOWER CONNECTOR
HARNESS
NOTE - Refer to wiring diagram located on the
unit
ance (table 2).
All air data measured external to unit with 1
inch non-pleated air filter in place.
All factory settings are medium speed.
All data given while air handler is operating
with a dry DX coil.
All downflow applications run on high speed
when utilizing electric heat.
Figure 17. Changing Blower Speed
NOTE:
Air Handler Model Blower Speed .10" WC .20" WC .30" WC .40" WC .50" WC
-018
LOW 538 525 503 471 418
MED 688 670 639 603 548
HIGH 919 881 855 788 710
-024
LOW 677 673 657 629 592
MED 1011 979 942 803 742
HIGH 1106 1045 999 917 857
-030
LOW 871 870 853 812 769
MED 1078 1057 1024 987 936
HIGH 1311 1261 1214 1154 1086
-036
LOW 1020 972 956 909 806
MED 1276 1240 1191 1148 1086
HIGH 1559 1521 1446 1395 1327
-042
LOW 1300 1273 1250 1211 1155
MED 1527 1493 1452 1390 1345
HIGH 1816 1756 1693 1605 1528
-048
LOW 1257 1212 1157 1116 1053
MED LOW 1486 1448 1411 1364 1330
MED 1721 1675 1630 1594 1553
MED HIGH 1721 1675 1630 1594 1553
HIGH 1840 1794 1754 1721 1681
-060
LOW 1098 1049 1001 926 831
MED LOW 1624 1594 1565 1520 1492
MED 1815 1783 1758 1730 1685
MED HIGH 1903 1869 1837 1809 1764
HIGH 1981 1957 1923 1893 1861
•
•
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Table 2. MAHM*CTA
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