Solar Water Heater

Thermosiphon solar collectors provide Mains Pressure pre-heating via a high 
efficiency copper coil heat exchanger installed within the solar collector tank. 
The way in which the Mains Pressure solar collector heats water is the same 
as the non pressure solar collector. Instead of using the water in the tank 
directly, as the Non pressure does, the type uses a 45��60 copper coil heat 
exchanger inside the tank which provides more than 1.2m² of heat 
transfer area. When water flows though the coil, it absorbs heat from the 
water inside the solar collector tank. The solar collector tank is therefore 
for thermal storage. One advantage of this system is that almost no water 
is introduced into the tank (apart from occasional topping up), so corrosion 
and scale buildup are almost totally eliminated. Tanks are designed for low 
to medium pressure applications, using a gravity feed tank or pressure 
reduction valve. Direct connection to Mains Pressure water supply is not 
permitted. Please check your local building / plumbing regulations regarding 
the installation of water tanks.