Chapter 4 _______________________________________________________________ Installation 
 
VAISALA_______________________________________________________________________ 73 
 
Installing Solar Panel SOLAR33 
Solar Panel SOLAR33 is a custom-designed module incorporating high-
power efficiency and quality. The 33 W panel contains 36 polycrystalline 
silicon cells. The SOLAR33 modules are lightweight and have high 
power and a robust construction. 
The cells are protected from dirt, moisture and mechanical impact using a 
tempered, low-iron glass front. The solar circuit is laminated using EVA 
(Ethylene Vinyl Acetate) between tempered glass and a durable, multi-
layered polymer back sheet for superior moisture resistance. 
WARNING 
Photovoltaic modules generate direct current (DC) when exposed to 
sunlight or other sources of light. Although single modules produce low 
voltage and current, shocks and burns can still result from contact with 
module output wiring. 
 
CAUTION 
Handle the solar panel with care: impact on the front or rear surface can 
damage the module. Do not bend the panel. 
 
CAUTION 
When working with the panel, use properly insulated tools and wear 
rubber gloves. 
 
NOTE 
The rays of the sun should be perpendicular to the panel. In other words, 
sunlight should hit the panel at a 90° angle. 
 
NOTE 
Do not concentrate light on the panel in an attempt to increase its power 
output.