Gebwell GEMINI 40, Installation, Operation And Maintenance Manual

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28 Gebwell GEMINI
3. If you hear noise, such as gurgling/bubbling, which in-
dicates the presence of air in the circuit, shut down the
source pump from the S8 switch.
4. Let the air rise to the highest point of the collector and
open the vent valve. Ensure that the system’s expan-
sion vessel has a sufficient amount of liquid.
5. When the venting is complete, continue rotating the
source pump (P1) and repeat until all air has been re-
moved from the system.
6. You can leave the source pump on while venting the
charging pump.
NOTE! Pumping at excessively high power will disperse the air
in the brine 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 collector with stronger pumping can be done with
the
Input/output test function:
1. Select Input/output test
2. Set the relay test QX5 on
3. Switch the Relay test off in section Input/output test-
ing, (No test)
10.4 Venting the heat supply circuit
Venting the heat supply circuit must be carried out controller-
specifically. (The both of GEMINI’s charging pumps)
1. Set the charging pump’s (LP/Q9) line protection
switch to position I.
2. Select Output test UX2 in the Input/output test menu
3. Set the desired rotation speed for the heat line pump.
Let pump rotate for a few minutes.
4. Turn off the pump by setting the Output test UX2 to
0%.
5. Let the air rise to the highest point of the system and
ensure that the vent valves are open.
6. Ensure that the heating system’s pressure is at a suffi-
cient level, so that air can exit through the automatic
vent valves.
7. When the venting is complete, continue rotating the
pump and repeat until the air has been removed from
the system.
8. Finally, switch off the Output test UX1 “—”
Return to the activation of the heat pump in section 8.
10.5 Use without a collector and use during
construction site
The heat pump can be used for heating already before connecting
the collector. In this case, all the heat is produced with direct
electric energy. All the control functions of heating and domestic
hot water are, however, available. Note that the heating and do-
mestic hot water circuits must be connected and vented, and the
electric connections must be fully completed.
If the heat pump is wished to be used for heating at a construction
site, the device must be set to
emergency operation mode, which
ensures that the compressor (K1) and source pump (MLP/Q8)
are not activated. In this way, the heat pump makes sure that the
domestic hot water and heating is done with an electric heater.
When the display is in basic mode:
1. Roll the navigation roller to the symbol.
2. Select Special operations
3. Select Emergency operation and set the function on
by pressing the navigation roller and rolling the set-
ting to the ON mode. Accept by pressing the naviga-
tion roller.
10.6 Activation of a cascade system
Carry out the activation of cascade devices according to normal
activation. The activation of slave devices takes place by setting
the master device to
Emergency operation mode . The domestic
hot water button is not significant in the activation of slave de-
vices. If heating circuits have been connected to the slave de-
vices, carry out a site-specific definition. (Refer to
Site-specific
definition → Heating circuit)