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TABLE I
DIRECT DRIVE BLOWERS - HEATING ONLY
Furnace
Size
Motor
H.P.
No. of
Speed Taps
Ext. S. P.
Inches Water
Temp. Rise
Degrees F.
Factory
Setting
fCFM at
85° F Temp. Rise
50
1/6
4
0.12
50-70
3
tt
615
80
1/6
4
0.12
75-95
3
695
100
1/5
4
0.15
75-95
1
870
125
1/4
2
0.20
75-95
1
1090
t
Values shown are for 115 volt power supply
ft
Temp rise is 60° F
TABLE II
HEATING AND COOLING BLOWERS
Furnace
Motor
H P
No.
Speed
of
Taps
Temp. Rise Degrees 1
Motor Speed Taps
~ .
Ext. S.P.
Cooling Air FIow-CFM§
at Motor Speeds Shown
Hi
|
Med
Med-Lo
Lo
Hi
Med
Med-Lo
Lo
50
1/6
4
*
HI
0.32
710
610
485
dna
0.30
810
660
510
dna
80
1/6
4
*
95-105
*
0.35
785
645
500
dna
0.40
760
625
490
dna
0.30
1185
980
865
dna
80
1/3
4
*
*
★
80-90
0.35
0.40
m
965
940
850
830
dna
dna
0.50
1080
895
815
dna
BBB
830
675
505
dna
100
1/6
4
80-90
90-100
*
805
655
495
dna
775
635
490
dna
■
1250
1030
900
msm
100
1/3
4
*
70-75
75-85
1215
1015
890
Hi'
■
1200
1000
870
1
1110
960
830
mm
1525
1060
|
125
1/3
4
*
80-90
90-100
■
1500
1045
1
IB
1
1470
1030
1
1
■
1400
1010
dna
does not apply
* — speed tap not recommended for heating
§ Values shown are for 115 volt power supply
TABLE III
BELT DRIVE BLOWERS
Heating
Heating and Cooling
Furnace
Size
Motor
H.P.
Factory
Setting
CFM
@ 0.20
Temp.
Rise
Motor
H.P.
Factory
Setting
CFM
@0.20
Temp.
Rise
Max. CFM
@0.40
Approx.
A/C Capacity
80
1/6
3
T.O.
570
97° F
1/3
4
T.O.
790
70° F
1080
30M
100
1/4
3
T.O.
730
95° F
1/3
4
T.O.
930
75° F
1270
36M
125
.
1/4
4/2 T.O.
950
92° F
1/3
4/2 T.O.
950
92° F
1080
36M
1/2
5
T.O.
1280
68° F
1800
48M
150
1/3
5
T.O.
1160
90° F
1/2
5
T.O.
1160
90° F
1840
48M
3/4
5
T.O.
1600
65° F
2280
60M
175
1/3
5. T.O.
1475
83° F
1/2
5
T.O.
1500
81° F
2400
54M
3/4
5
T.O.
1500
81° F
2400
66M
200
1/3
5
T.O.
1475
■SB
93° F
54M
Bl
IPPm
93° F
66M
-
9
-
393U
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