Rotex HPSU compact (V5) Installation And Maintenance Manual page 54

11. Vent the entire heating installation as described in
chapter 5.1.4 (open the regulating valves on the installation.
At the same time the underfloor heating system can be filled
and flushed with the underfloor heating distributor.).
(see operating manual of the control unit)
12. Inspect the water pressure at the external pressure gauge
again. Where necessary, refill with water via the KFE cock
(fig. 7-2, item 2).
13. Disconnect the filler hose (fig. 7-2, item 1) with flow-back
preventer from the KFE cock (fig. 7-2, item. 2).
1 Filler hose
2 KFE cock
3 Ball cock
4 Water cock
5.1 Valve drive
Fig. 7-2 Filling the heating circuit
FA ROTEX HPSU compact (V5) •
Air Purge
5.2 Unlocking button of the drive
lock
6 Automatic bleeder
3UVB1, 3UV DHW
3-way diverter valve
7 x Service and maintenance
55