Setting Up
50
89217391 Rev. A
©2022 nVent
4.
Remove the caps from the vent valve (4) and connect a venting hose with a
threaded fitting.
NOTE
Collect any escaping cooling medium in a suitable container.
5.
After filling, disconnect the venting hose and refit the caps to the vent valve
(4).
6.
Unscrew the cover (1) of the tank (2) and fill the tank up to the "Max." mark.
NOTE
When starting or filling the unit for the first time, proceed as follows:
•
Remove the tank from the device. To do this, disconnect the quick
coupling and the connector from the float switch.
•
Fill the tank up to the "Max." mark and reconnect.
•
Do not install the quick coupling.
•
Remove the hose from the quick coupling and insert it into a customer-
provided container with a premixed water/glycol or water/anti-corrosion
agent mixture.
•
Switch the unit on and activate the automatic filling function via the control
unit. The filling pump withdraws the mixture from the container.
•
After 60 seconds, the pump will stop automatically. Acknowledge the fault
via the control unit. Then, the pump will restart.
•
If the pump does not draw in any liquid when it is initially activated, prefill
the hose.
•
Fill the secondary circuit until the necessary filling pressure is reached.
•
Push the hose back into the quick coupling.
7.
Switch the pumps on (secondary circuit) via the control unit. Let them run for
approximately one minute. Then, switch them off.
8.
Open and then close all possible venting points of the system. After
approximately ten minutes, open and close all possible venting points
again. Then, switch the pump on, let it run for one minute and then
switch it off. Repeat these venting steps several times
.
NOTE
If the secondary circuit has been filled via the drain connection, the filling pump
will not aspirate.
In this case, remove the pressure hose of the filling pump and insert it into a
container with a premixed water/glycol or water/anti-corrosion agent mixture.
Switch the filling pump on briefly and then off again. Then, reinstall the pressure
hose of the filling pump.
