Lennox LCH036 Installation Instructions Manual page 169

BLOWER DATA
POWER EXHAUST FANS
1
STANDARD STATIC ( TWO FAN OPERATION)
Return Duct
Negative Static Pressure
Inches Water Gauge
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
For one fan operation, use half of the air volume value.
1
OUTDOOR AIR PERCENTAGE VS. FRESH AIR DAMPER ANGLE - Less ERW
Opening Angle
NOTE - Outdoor air percentage will vary when a variable frequency drive (VFD) drive is used on the supply air blower.
OUTDOOR AIR PERCENTAGE VS. FRESH AIR DAMPER ANGLE - With ERW
1
ERW
Static
Pressure
in. w.g. 1.2
10° - - -
20° 9%
30° 23% 18% 13%
Fresh Air
40° 38% 32% 27% 22% 17% 11% 43% 38% 32% 27% 22% 17% 48% 43% 38% 32% 27% 22%
Damper
Opening
50° 52% 46% 41% 36% 31% 25% 57% 52% 46% 41% 36% 31% 62% 57% 52% 46% 41% 36%
Angle
60° 66% 61% 55% 50% 45% 39% 71% 66% 61% 55% 50% 45% 77% 71% 66% 61% 55% 50%
70° 81% 75% 70% 64% 59% 54% 86% 81% 75% 70% 64% 59% 91% 86% 81% 75% 70% 64%
80° 95% 89% 84% 78% 73% 68% 100% 95% 89% 84% 78% 73% 100% 100% 95% 89% 84% 78%
1
ERW
Static
Pressure
in. w.g. 1.2
10° - - -
20° 25%
30° 39%
Fresh Air
40° 54%
Damper
Opening
50° 68%
Angle
60° 84%
70° 97%
80° 100%
NOTE - Outdoor air percentage will vary when a variable frequency drive (VFD) drive is used on the supply air blower.
See page 37 for Energy Recovery Wheel Specifications.
1
Air Volume
cfm
12,100
11,600
11,150
10,600
10,100
9500
8900
8200
7400
6500
Fresh Air
Damper
0.2
10° 5%
20° 19%
30° 34%
40° 48%
50° 62%
60° 77%
70° 91%
80° 100%
Percentage of Outdoor Air Available at Various Return Duct Static Pressures
0 Return Duct Static
1.0 0.8 0.6 0.4 0.2
- - - - - - - - - - - - - - -
4% - - - - - - - - - - - - 14%
8% 2% - - - 28% 23% 18% 13%
Percentage of Outdoor Air Available at Various Return Duct Static Pressures
0.6 Return Duct Static
1.0 0.8 0.6
- - - - - - - - -
19% 14% 9%
34% 28% 23%
48% 43% 38%
62% 57% 52%
77% 71% 66%
91% 86% 81%
100% 100% 95%
Return Duct
Negative Static Pressure
Inches Water Gauge
Percentage of Outdoor Air Available at Various
Return Duct Static Pressures - in. w.g.
0.4
11%
25%
39%
53%
68%
82%
96%
100%
0.2 Return Duct Static
1.2 1.0 0.8 0.6
- - - - - - - - - - - -
9% 4% - - -
0.4 0.2 1.2
- - - - - - - - -
4% - - - 30%
18% 13% 44%
32% 27% 59%
46% 41% 73%
61% 55% 87%
75% 70% 100%
89% 84% 100%
Page 25
0.50
0.55
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.6 0.8
16% 21%
30% 36%
44% 50%
59% 64%
73% 79%
87% 93%
100% 100%
100% 100%
0.4 Return Duct Static
0.4 0.2 1.2 1.0
- - - - - - - - - - - -
- - - - - - 19% 14%
8% 2% 34% 28% 23% 18% 13%
0.8 Return Duct Static
1.0 0.8
- - - - - -
25% 19% 14%
39% 34% 28%
54% 48% 43%
68% 62% 57%
84% 77% 71%
97% 91% 86%
100% 100% 100%
Air Volume
cfm
5700
5000
4300
3800
3400
3000
2500
2300
2000
0.8 0.6 0.4 0.2
- - - - - - - - - - - -
9% 4% - - - - - -
8%
0.6 0.4 0.2
- - - - - - - - -
9% 4%
23% 18%
38% 32%
52% 46%
66% 61%
81% 75%
95% 89%