Installation Instructions – RVR Solar Water Heating Kits - RVR.ie

Installation Instructions5. Flushing, Filling And Leak TestingSolar FluidThe lowest recorded temperature in Ireland is almost -20°C. The solar fluid supplied in the RVR Solar Waterheating kit has a freezing point of -28°C.Do not dilute the solar fluid. This will change it’s freezing point and viscosity.Do not use any other type of solar fluid in the system.Filling and flushing the solar circuitApply an air pressure test to the system to check for leaks. Once it is clear that there are no leaks in the system,proceed as follows:Filling the system withpump stationFig. 35RVR Prostation with labellingof parts used for commissioningFlocon S solar station withlabelling of parts used for commissioning• Use an RVR 8 bar solar filling pump station to purge and fill the system.• Connect the filling pump supply hose to the filling valve and open the valve.• Connect filling pump drain hose to the drain valve and open the valve.• Close the commissioning ball valve on the solar station.• Add sufficient solar fluid for the system into the reservoir of the filling pump station. Start the pumpand flush the solar circuit for at least 15 minutes. To get the air completely out of the system, open thecommissioning valve after five minutes and then close it again.• Do not use water to flush the system as it may present a danger of frost damage if it is not completelypurged.• Close the Drain Valve while the filling pump is running and increase the system pressure to about 3 bar.The system pressure is displayed by the manometer.• Close the Filling Valve and switch-off the pump. Open the Commissioning Valve.Set the System PressureThe system pressure must be set to 2.2 bar for correct operation. Drain some fluid via the drain valve to17