background image
66
HYDRAULIC SOLAR UNIT
The hydraulic unit for solar heating installations is a group of
components with all the necessary hydraulic elements in the
primary circuit of these installations.
TECHNICAL CHARACTERISTICS
The main characteristics that distinguish these components from those
used in heating and domestic hot water systems is that they can be
subjected to very high temperatures. They are therefore made of
materials especially selected for working at these temperatures:
ˇ Maximum working temperature in flow branch: 160ēC.
ˇ Maximum working temperature in return branch: 120ēC.
ˇ Maximum working temperature of safety valve: 160ēC.
ˇ Maximum permissible pressure: 10 bar.
ˇ Safety valve calibration: 6 bar
ˇ Thermometer temperature range: 0-120ēC.
ˇ Flow indication range: 2-14l/min.
ˇ Manometer scale: 0-10bar.
ˇ Expanded polypropylene density: 50gr/l
SOLAR THERMAL CONTROLS
Solar Brochure EXTRA:Layout 1 19/02/2010 12:56 Page 66