solar heating circuit during filling and maintenance operations.
have a shut-off valve at the front to isolate them when the installation
has been filled. This prevents the fluid in the circuit from being
drained by the automatic bleed valve when the temperature causes
it to rise to evaporation point.
installation (normally the solar collector outlet), and always in
vertical position.
After filling and draining the installation, close the shut-off valve
installed before the air vent valve.
· Fluid: 50% water-glycol mixture.
· Maximum working pressure: 6 bar.
· Connection: 3/8"M.
· Shut-off valve connections: 3/8"H-3/8"M.
in the circuit, by means of an expansion volume and a grille inside it.
This air may be vented from the system by installing an automatic air
vent valve at the top or via a manual vent valve.
· Fluid: 50% water-glycol mixture.
· Maximum working pressure: 6 bar.
· Upper connection: 3/8"H.
· Accessories for connection to Ø22mm pipe.