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All installations and services must be performed by qualified service personnel.
6
F. CFM TABLES
The following tables contain blower speed settings and their respective air flowrates for the ECM blower motor. To
change air flowrates from that of the shipped settings, use the respective SW1 dipswitch on the furnace’s integrated
control board (see Figure 2).
CSHB60-90XE
Heating Speed Set-ups Cooling Speed Set-ups
Low Fire Med Fire High Fire
BTUH 60,000 72,000 90,000
Fan
Control
SW 1
Switch
Settings
Heating
CFM
Aprox. Rise
(F
0
)
Aprox. Rise
(F
0
)
Aprox. Rise
(F
0
)
3-OFF
2-OFF
1-OFF
740 75
o
80
o
3-OFF
2-OFF
1-ON
812 68
o
82
o
3-OFF
2-ON
1-OFF
883 63
o
76
o
84
o
Factory
SW1
Setting
3-OFF
2-ON
1-ON
968 57
o
69
o
86
o
3-ON
2-OFF
1-OFF
1054
63
o
79
o
3-ON
2-OFF
1-ON
1153
58
o
72
o
3-ON
2-ON
1-OFF
1267
66
o
3-ON
2-ON
1-ON
1424
58
o
Recommended Heating Speed Setting
Air Flow
Fan
Control
SW 1
Switch
Settings Clg. Tonage Cool Continous
6-OFF
5-OFF
4-OFF
2 799 500
6-OFF
5-OFF
4-ON
2.5 1017 508
6-OFF
5-ON
4-OFF
3 1210 605
6-OFF
5-ON
4-ON
3.5 1404 702
Factory
SW1
Setting
6-ON
5-OFF
4-OFF
4 1622 799