User's Guide ______________________________________________________________________  
74 __________________________________________________________________ M211296EN-A 
Install the solar panel as follows: 
1.  Mount the panel to the mast using the provided brackets. Face the 
panel south (true south, not magnetic) on the northern hemisphere 
and north on the southern hemisphere. The recommended 
installation height is roughly 4 m from the ground level. Secure the 
bolts firmly. 
2.  Adjust the tilting of the solar panel by loosening the adjusting 
screws. Be careful not to damage the power cable during the tilting. 
Remember to tighten the screws in the end. Finding the correct 
angle, shown in Figure 35 on page 76: 
a.  The panel is tilted toward the sun. The further you are from 
the equator, the more vertical the panel. 
b.  Maximize the annual energy output by installing the panel at 
an angle recommended in Table 18 on page 76. In some 
installations, it may be effective to adjust the tilt seasonally. 
At most latitudes, performance can be improved during 
summer by using an angle smaller than the table's 
recommendation. Conversely, a larger angle can improve 
winter performance. 
3.  Guide the solar panel cable down the mast, keeping it away from 
the grounding cable. Secure the cable with cable ties. 
Do not connect the solar panel cable to the enclosure until the mechanical 
installation of AWS330 is complete, the backup batteries are connected, 
and the weather station is ready for powering; see instructions in section 
Powering Up the System on page 99. 
CAUTION 
Do not connect Solar Panel SOLAR33 before the mechanical installation 
of the entire AWS330 is complete.