10
Filling the circuits
1)
Close all the outlets to the geothermal circuits using the shut-off
and regulating valves.
2)
Open the fill and drain cocks using the specific cap and make
sure that the shut-off valves are closed.
5)
When filling is complete, close the valves in the first circuit and
repeat the same sequence of operations for all the other
circuits.
3)
Connect the system testing pump to the fill cock on the flow
manifold and a drain pipe to the cock on the return manifold.
Direct the drain pipe into a container if the medium in the
system contains glycol.
4)
Fill the first circuit by opening the corresponding valves,
making sure that all the air in the circuit is removed. Check that
the cap on the air vent is open.
