39
082809
figure 2
figure 1
Measuring and cutting the rack legs
Use an angle finder tool to set the desired collector tilt angle during installation.
Table 1 below is to help you find distances between the front and rear feet (B), and
the cut length for the rack leg (A) at various collector tilt angles.
The table is for collector tilt angle from a horizontal plane, such as for a flat roof or
for ground mounting. (figure 1)
When mounting on a pitched roof (figure 2) the table can be used by subtracting the
roof pitch (angle) from the collector tilt angle to find the remaining angle for Table 1.
With this method the collector legs will be perpendicular with the roof pitch (figure 2).
Table 1
Collector Tilt
Angle in degrees
from horizontal
A / B for OVF - 21
in inches
A / B for OVF - 32
in inches
A / B for OVF - 40
in inches
5
8 / 86
9 / 98
11 / 122
10
15 / 85
17 / 97
21 / 120
15
22 / 83
25 / 95
32 / 118
20
30 / 81
34 / 92
42 / 115
25
36 / 78
42 / 89
52 / 111
30
43 / 74
49 / 85
61 / 105
35
49 / 71
56 / 80
70 / 100
40
55 / 66
63 / 75
45
61 / 61
69 / 69
50
66 / 55
55
71 / 49
