Lennox KGA Series Service Literature page 11

BLOWER DATA
CEILING DIFFUSERS AIR RESISTANCE - in. w.g.
Air Volume
Unit Size
092 Models
102 & 120 Models
150 Models
RTD11 Step-Down Diffuser
2 Ends Open
cfm
2400 0.21
2600 0.24
2800 0.27
3000 0.32
3200 0.41
3400 0.50
3600 0.61
3800 0.73
3600 0.36
3800 0.40
4000 0.44
4200 0.49
4400 0.54
4600 0.60
4800 0.65
5000 0.69
5200 0.75
4200 0.22
4400 0.28
4600 0.34
4800 0.40
5000 0.46
5200 0.52
5400 0.58
5600 0.64
5800 0.70
CEILING DIFFUSER AIR THROW DATA
Air Volume
Model No.
cfm
2600
2800
092 Models 3000
3200
3400
3600
3800
102, 120
4000
Models
4200
4400
5600
5800
6000
150 Models
6200
6400
6600
Throw is the horizontal or vertical distance an air stream travels on leaving the outlet or diffuser
1
before the maximum velocity is reduced to 50 ft. per minute. Four sides open.
1 Side, 2 Ends
Open
0.18
0.21
0.24
0.29
0.37
0.45
0.54
0.63
0.28
0.32
0.36
0.40
0.44
0.49
0.53
0.58
0.62
0.19
0.24
0.29
0.34
0.39
0.44
0.49
0.54
0.59
Effective Throw Range
1
RTD11 Step-Down
ft.
24 - 29
25 - 30
27 - 33
28 - 35
30 - 37
25 - 33
27 - 35
29- 37
32 - 40
34 - 42
39 - 49
42 - 51
44 - 54
45 - 55
46 - 55
47 - 56
Page 11
FD11 Flush
All Ends & Sides
Diffuser
Open
0.15
0.18
0.21
0.25
0.32
0.39
0.48
0.57
0.23
0.26
0.29
0.33
0.37
0.42
0.46
0.50
0.54
0.16
0.20
0.24
0.29
0.34
0.39
0.43
0.47
0.51
FD11 Flush
ft.
19 - 24
20 - 28
21 - 29
22 - 29
22 - 30
22 - 29
22 - 30
24 - 33
26 - 35
28 - 37
28 - 37
29 - 38
40 - 50
42 - 51
43 - 52
45 - 56
0.14
0.17
0.20
0.25
0.31
0.37
0.44
0.51
0.15
0.18
0.21
0.24
0.27
0.31
0.35
0.39
0.43
0.10
0.12
0.15
0.19
0.23
0.27
0.31
0.35
0.39