24
RECTANGULAR BYPASS SELECTION TABLE
Bypass air in CFM. Calculated at 1500 FPM.
Formula used: B = W x H / 144 x 1500, where B = Bypass air in CFM, W = damper width in inches, H = damper height in inches,
144 = 144 sq. inches per sq. ft., 1500 = 1500 FPM.
ROUND AND RECTANGULAR
BYPASS DAMPER MOTORS
SLAVING BYPASS DAMPERS
Use only one Pressure Sensor when slaving two or more
Bypass Dampers together. Connect the Pressure Sensor
to one damper as described above. Connect the slave
dampers in parallel as shown. Up to 4 dampers can be
slaved to one Sensor. The slaved dampers will self-
synchronize each time the dampers reach full open or full
close.
To Static Pressure Control, as shown on the Bypass
Wiring Diagram on the next page.
WIDTH IN INCHES
8
10
12
14
16
18
20
22
24
28
32
36
40
44
48
8
667
833
1000
1167
1333
1500
1667
1833
2000
2333
2667
3000
3333
3667
4000
10
833
1042
1250
1458
1667
1875
2083
2292
2500
2917
3333
3750
4167
4583
5000
12
1000
1250
1500
1750
2000
2250
2500
2750
3000
3500
4000
4500
5000
5500
6000
14
1167
1458
1750
2042
2333
2625
2917
3208
3500
4083
4667
5250
5833
6417
7000
16
1333
1667
2000
2333
2667
3000
3333
3667
4000
4667
5333
6000
6667
7333
8000
18
1500
1875
2250
2625
3000
3375
3750
4125
4500
5250
6000
6750
7500
8250
9000
20
1667
2083
2500
2917
3333
3750
4167
4583
5000
5833
6667
7500
8333
9167
10000
22
1833
2292
2750
3208
3667
4125
4583
5042
5500
6417
7333
8250
9167
10083
11000
24
2000
2500
3000
3500
4000
4500
5000
5500
6000
7000
8000
9000
10000
11000
12000
28
2333
2917
3500
4083
4667
5250
5833
6417
7000
8167
9333
10500
11667
12833
14000
32
2667
3333
4000
4667
5333
6000
6667
7333
8000
9333
10667
12000
13333
14667
16000
36
3000
3750
4500
5250
6000
6750
7500
8250
9000
10500
12000
13500
15000
16500
18000
40
3333
4167
5000
5833
6667
7500
8333
9167
10000
11667
13333
15000
16667
18333
20000
44
3667
4583
5500
6417
7333
8250
9167
10083
11000
12833
14667
16500
18333
20167
22000
48
4000
5000
6000
7000
8000
9000
10000
11000
12000
14000
16000
18000
20000
22000
24000
H
E
IG
H
T I
N
INCH
E
S
RC RO MC
RC RO MC
DAMPER
ACTUATOR
* * *
SLAVE
DAMPER
ACTUATOR
* * *
TO NEXT SLAVE
BYPASS DAMPER
IF APPLICABLE
RC
RO
MC
RECTANGULAR BYPASS SELECTION TABLE