50
Start-up
Pressure test
Insulating the collector panel
A pressure test shall be carried out
immediately after installing the collector
and piping system. The temperature of
the collector shall not be excessively
high when the test is conducted
(<100°C); neither should there be any
risk of freezing. To avoid overheating,
cover the collector with an opaque
sheet or something similar, even while
you are still installing the tubes. Collec-
tors should remain covered by the
sheet until everything is ready for start
up. This prevents overheating and mini-
mizes the risk of burn injuries when
insulating the collector panel. The sys-
tem shall not be filled and started up
until there is a way to consume the
heat.
Adjust the precharge pressure in the
expansion tank.
Always measure and adjust the pre-
charge pressure in the expansion tank
before filling the system. The precharge
pressure is a function of the vertical
height, the system pressure and the
size of the expansion tank (see table on
page 13).
Pressure test
Fill the system with Antifrogen SOL HT.
Increase the pressure until the safety
valve opens. Inspect all manifold and
tube connectors for leaks. Check that
the safety valve operates properly. If
necessary, slightly tighten the connect-
ors
(max ¼ turn; recheck the system
for leaks).
Insulating the collector panel
Tube neck
After the pressure test has been suc-
cessfully completed, insulate the tube
necks and tighten the tube connectors
until the manifold gaskets form a proper
seal between the tubes and the mani-
fold.
Manifold interconnections
Insulate the manifold interconnections
and close the cover.
Hook the cover into the back of the
manifold and press forward until it
snaps into place.
Collector connections
Insulate the collector connections and
close the cover. Hook the cover into the
back of the manifold and press forward
until it snaps into place.
