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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 .39 - - - - - - - - - .27 - - -
5200 .42 - - - - - - - - - .30 - - -
5400 .52 .45 - - - - - - - - - .33 - - -
- - - - - - - - - - - -
.71 .59 .51 - - - - - - - - - .39 - - -
.55 .31 .27 .42 .29
.59 - - - - - - - - - - - -
.72 - - - - - - - - - .50 - - -
- - - - - - - - - .42 .31 - - - .34
.92 .77 - - - - - - - - - .54 - - -
.99 .72 - - - - - - - - - - - -
7000 1.03 .49 .41 .40
7200 1.09 .92 - - - - - - - - - - - -
7400 1.15 .97 - - - - - - - - - .70 - - -
7500 - - - - - - - - - .51 .41 - - - .45
1.20 1.02 - - - - - - - - - .74 - - -
- - - - - - - - - .59 .49 .43 - - - .50
- - - - - - - - - .50 - - - .57
9000 - - - - - - - - - .79 - - -
9500 - - - - - - - - - .75 - - - .74
- - - - - - - - - 1.00 .73 - - -
- - - - - - - - - 1.10 .92 - - -
- - - - - - - - - 1.21 1.01 - - -
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
39 - 49
240
7200
42 - 51 7400 35 - 40
44 - 54 40 - 50
45 - 55 42 - 51 40 - 50
43 - 52 39 - 44 42 - 51
43 - 52
1
Throw is the horizontal or vertical distance an airstream travels on leaving the outlet
open.
43 - 49 44 - 54
44 - 50
47 - 55
BLOWER DATA
MINIMUM AIR VOLUME REQUIRED FOR USE WITH
OPTIONAL ELECTRIC HEAT
Electric Heat kW Minimum cfm
15
30
45
90
POWER EXHAUST FAN PERFORMANCE
Return Air System Static
Pressure
Air Volume Exhausted
in. w.g. cfm
0.00
0.05
0.10 7725
0.15 7110
0.20
0.25 5790
0.30
0.35 4300
0.40 3510
0.45
0.50
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