17
P/N 30149, Rev. G [12/15/2016]
Table A-6 Direct Drive Blower Set-Up PSC Motor
Furnace Mo
del
Blo
wer
Blo
wer Set
-Up
Co
oling Capacity
0.20 in. w.c.
0.50 in. w.c.
Tons
Po
wer
CFM Range
Speed
Mo
tor
Speed
Mo
tor
BML
-60
100-10T D
D
Low
1/2
HP
Med-Low
1/2
HP
3.5
1/2
HP
700-1400
BML
-80
100-10T D
D
Med-Low
1/2
HP
Med-Low
1/2
HP
3.5
1/2
HP
700-1400
BML
-90
100-10T D
D
Med-Low
1/2
HP
Med-High
1/2
HP
3.5
1/2
HP
700-1400
Table A-7 Direct Drive Blower Characteristics PSC Motor
Furnace Mo
del
Blo
wer
Mo
tor HP
Mo
tor FLA
∆T
Speed
CFM
External Static Pressure – Inches w.c.
0.20
0.30
0.40
0.50
0.60
BML
60
–
90
100-10T D
D
1/2
HP
7.1
70°F
High
1722
1645
1561
1462
1375
Med-High
1604
1545
1473
1383
1302
Med-Low
1147
1133
1106
1063
1013
Low
747
738
720
702
669
Table A-8 Direct Drive Blower Characteristics ECM Motor
Furnace Mo
del
Blo
wer
Mo
tor HP
Mo
tor FLA
∆T
CFM RANGE
Co
nt
inuo
us
Fan
Heating
Co
oling
0.38 - 0.48 inches w.c.
0.5 inches w.c.
BML
V
100-10T
DD
1/2
HP ECM
7.7
70°F
470-635
625 -
1500
600 -
1200
60
–
90
APPENDIX A - CHECK OUT AND ADJUSTMENTS
TIP
Formulas will assist with design of duct-work and determination of air flow delivery.
CFM = Bonnet Output / (1.085 x System Temperature Rise (
∆
T
)
System Temperature Rise (
∆
T
) = Bonnet Output / (1.085 x CFM)