Page 10
POWER EXHAUST FAN PERFORMANCE
Return Air System Static Pressure Air Volume Exhausted
in. w.g. cfm
0.00
0.05 8210
0.10 7725
0.15 7110
0.20
0.25
0.30
0.35 4300
0.40 3510
0.45
0.50 1840
CEILING DIFFUSER AIR RESISTANCE - in. w.g.
Air
Volume
cfm
RTD11-185S RTD11-275S
FD11-185S FD11-275S
2 Ends Open
1 Side/2 Ends
Open
All Ends &
Sides Open
2 Ends Open
1 Side/2 Ends
Open
All Ends &
Sides Open
5000 .51 .44 - - - - - - - - - .27 - - -
5200 .48 .42 - - - - - - - - - .30 - - -
5400 .52 .45 - - - - - - - - - .33 - - -
.48 - - - - - - - - - - - -
5800 .71 .51 - - - - - - - - - - - -
.55 .31 .27 .42
.80 - - - - - - - - - - - -
.72 - - - - - - - - - .50 - - -
- - - - - - - - - .42 .31 - - - .34
.77 - - - - - - - - - .54 - - -
.83 .72 - - - - - - - - - .58 - - -
7000 1.03 .87 .41 .40
7200 .80 - - - - - - - - - - - -
7400 1.15 .84 - - - - - - - - - .70 - - -
7500 - - - - - - - - - .51 .41 - - - .45
1.20 1.02 .88 - - - - - - - - - .74 - - -
8000 - - - - - - - - - .43 - - - .50
8500 - - - - - - - - - .58 .50 - - - .57
- - - - - - - - - .58 - - -
- - - - - - - - - .75 - - - .74
- - - - - - - - - 1.00 .84 .73 - - - .81
- - - - - - - - - 1.10 .80 - - -
- - - - - - - - - 1.21 1.01 .88 - - -
CEILING DIFFUSER AIR THROW DATA - ft.
Model
No.
Air Volume
cfm
1
Model
No.
Air Volume
cfm
1
RTD11-185S
Step-Down
FD11-185S
Flush
RTD11-275S
Step-Down
FD11-275S
Flush
180
28 - 37
240
7200 33 - 38
5800 42 - 51 7400 35 - 40 28 - 37
44 - 54 40 - 50
45 - 55 42 - 51 7800 38 - 43 40 - 50
43 - 52 8000 42 - 51
8200 43 - 52
1
open.
8400 44 - 54
44 - 50
8800 47 - 55
BLOWER DATA
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