VC50SDD Installation &
Technician’s Manual
Page 23 of 46
Following the guidance in sections 10 and 11
above determine the required tilt angle for the
array. Use an inclinometer (or free smart phone
app e.g “Angle Meter” in the Google Play store)
to set the array tilt. Alternatively a triangle may
be cut from a piece of card and used with a
spirit level to set the array angle correctly. Refer
to the table below for the dimensions necessary
to produce a triangle of the correct size.
Required Angle
(
A
)
Length of
Y
Length of
Z
Required Angle
(
A
)
Length of
Y
Length of
Z
10°
9cm
50cm
30°
2 : 1
15°
16cm
60cm
35°
1.75 : 1
20°
22cm
60cm
40°
1.5 : 1
25°
28cm
60cm
45°
1.4 : 1
