Lennox CBA25UH User Manual

Page 16
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 16. Changing Blower Speed
TABLE 2. CBA25UH Blower Performance (3-Speed PSC) – 240V (CFM @ ESP. – in. W. C.)
Air Handler
Model
Blower Speed .10" WC .20" WC .30" WC .40" WC .50" WC
-018
Low (Red)
Med (Blue)
High (Black)
510
670
905
495
650
865
475
630
820
420
595
770
325
505
705
-024
Low (Red)
Med (Blue)
High (Black)
630
885
1130
625
875
1100
615
850
1070
610
820
1010
580
780
950
-030
Low (Red)
Med (Blue)
High (Black)
900
1075
1240
865
1060
1210
830
1030
1170
780
985
1135
740
940
1085
-036
Low (Red)
Med (Blue)
High (Black)
1075
1300
1510
1040
1250
1450
1000
1205
1390
950
1145
1320
900
1085
1245
-042
Low (Red)
Med (Blue)
High (Black)
1325
1490
1820
1315
1465
1770
1300
1440
1690
1275
1395
1600
1225
1315
1500
-048
Low (Red)
Med (Blue)
High (Black)
1775
1995
2070
1710
1895
1970
1645
1800
1850
1565
1685
1719
1470
1560
1595
-060
Low (Red)
Med (Blue)
High (Black)
1675
1965
2140
1630
1925
2085
1580
1875
2000
1520
1800
1895
1450
1695
1795
• Blower Performance (CFM vs. ESP inches H
2
0)
• Cooling speeds should not be reduced below factory setting.
• All units with electric heat approved at 0.5" maximum and medium blower speed minimum.
• All downow applications run on high speed when utilizing electric heat.
Check-out Procedures
NOTE – Refer to outdoor unit installation instructions for sys-
tem start-up instructions and refrigerant charging instructions.
PRE-START-UP CHECKS
• Is the air handler properly and securely installed?
• If horizontally congured, is the unit sloped up to 5/8
inch toward drain lines?
• Will the unit be accessible for servicing?
• Has an auxiliary pan been provided under the unit with
separate drain for units installed above a nished ceil-
ing or in any installation where condensate overow
could cause damage?
• Have ALL unused drain pan ports been properly
plugged?
• Has the condensate line been properly sized, run,
trapped, pitched, and tested?
• Is the duct system correctly sized, run, sealed, and in-
sulated?
• Have all cabinet openings and wiring been sealed?
• Is the indoor coil factory-installed TXV properly sized for
the outdoor unit being used?
• Have all unused parts and packaging been disposed
of?
• Is the lter clean, in place, and of adequate size?

Lennox CBA25UH Specifications

General

Brand	Lennox
Model	CBA25UH
Category	Air Handlers
Language	English