Apricus Solar Water Heating System Installation and Operation ...

Apricus Solar Collector Installation & Operation Manual - USAsystem (normally collector outlet).Step 3. Start the fill process, first with water to flush/clean the system. If thelines have many soldered connections it is advisable to flush the system firstwith a TSP solution to clean the piping before flushing with water. Continuefilling until no more air bubbles are visible from the drain hose.Step 4. Clear out the water in the system using compressed air. It is advisableto measure the volume of expelled water, as this can confirm how much heattransfer fluid is required, and what sized metal bucket may need to be usedunder the PRV drain pipe. Connect the expansion tank to the pump station.Step 5. Change the fill hose to the heat transfer fluid and fill the system drainingany remaining water into the flush bucket. Once the heat transfer fluid starts toemerge (bright color) from the drain hose place the drain hose into the heattransfer fluid container and circulate for 15 minutes. Open and close theisolation valve once and run the circulation pump for at least 30 seconds toeliminate all air.Step 6. Once the system is free of air, close the drain port.Step 7. Continue to run the fill pump until the desired pressure is reached(40-50psi), then close the fill port, open the ball valve (return to verticalorientation) and turn off the fill pump. Monitor the pressure gauge for for atleast 15min for a drop in pressure that would indicate leaks in the system.Step 8. Manually start the system pump (P1) using the Manual Testing functionof the controller. Set pump to speed 3 and run for 5 minutes. If required repressurizethe system by turning on the fill pump and opening the fill valve.Step 9. Check pump and flow rate, adjusting as required.DRAINFILLNOTICEBefore connecting the pump station and completing the fill and pressurisation, pressuretest the collector loop with compressed air in accordance with standard plumbing practices.This is important to ensure no leaks are present in the roof space, attic etc.7.10. Draining Systema) If servicing the collector or any part of the solar loop or the storage tank, the system should be drained offluid.WARNINGOnly drain the system once the solar collector is below 113°F (45°C). Draining the systemwhile the system is hot could result in release of high pressure, hot fluid which could causeserious injury.WARNINGIf the installer/contractor leaves the site at any time a clear sign should be mounted on thefront of the pump station and/or storage tank that reds: “This equipment is currentlybeing maintained. Under no circumstances should any valves be opened or closedor the power supply to any equipment be restored.” Opening closed isolation valvescould release high pressure water that is potentially hot enough to cause serious scalding.Copyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 68 of 126