Gebwell Qi Series Installation, Operation And Maintenance Manual page 31

Venting the collector
•
Set the circuit breaker (F3) of the source and heat
supply pumps (P1 and P2) to the I position.
•
Select Expert –level on Service –menu
•
Select Input/Output test
•
Select Output UX 1 (1/2)
•
Activate the row by pressing the roller (dark
background), scroll the value on the row down
to 50% and accept by pressing the roller → the
source pump is activated. The
appears on the display.
•
If you hear noise, such as gurgling/bubbling,
which indicates the presence of air in the circuit,
shut down the source pump (P1). → Activate
the row by pressing the roller and scroll the
value down to 0%; confirm by pressing the
roller.
•
Allow the air to rise to the highest point of the
collector and open the vent valve.
•
Ensure that there is a sufficient amount of liquid
in the system's expansion vessel.
•
Once the venting is complete, continue running
the source pump (P1) and repeat the procedure
Gebwell Qi Installation, operation, and maintenance manual
NOTE! Pumping at excessively high power will disperse
the air in the heat collection liquid in the form of
microbubbles. This may trigger alarms during the
operation of the device. Therefore, you should begin the
venting in short cycles after which you drain the air out of
the vent valves.
Venting the heat supply circuit
symbol
31
until the air has been expelled from the system.
You can increase the pump's rotation speed.
•
Deactivate the source pump by setting the
control row 7710 to --- (not in use/Unused)
•
Select Output test UX 2 (7716).
•
Activate the row with the OK button (row
flashes), scroll the on the row down to 50% and
accept by pressing the roller → the heat supply
pump (P2) is activated.
•
Allow the pump (P2) to run for a moment and
shut it down. Activate the set point with the OK
button and scroll the value to 0%. Confirm by
pressing the roller.
•
Allow the air to rise to the highest point of the
system and ensure that the vent valves are open.
•
Ensure that the heating system's pressure is at a
sufficient level for the air to be discharged
through the automatic vent valves.
•
Once the venting is complete, continue running
the pump (P2) and repeat the procedure until the
air has been expelled from the system.
•
At the same time perform also the venting of
accumulator's charging coil through the valve
located above the change-over valve.
•
At the end release the pump from the testing
mode. Set the control row 7716 to --- (not in
use/Unused)