Apricus Solar Water Heating System Installation and Operation ...

Apricus Solar Collector Installation & Operation Manual - USAStep 2. Cut the Onix tubing to desired length with a sharp blade.Step 3. Insert the other end of the Onix tubing into a drain.8.6. Controller Connectionsa) The Apricus controller comes pre-installed on the left side of the pump station.b) Remove the controller cover by removing the screw with a small straight blade or star screwdriver. Pullthe cover straight off to expose the electrical (left) and sensor (right) terminal connections.c) Install system temperature sensors. (See section 6.4)Step 1. Insert collector sensor (RED high temp wire) into collector sensor well on the solar return sideof the collector. Route the wire along the return pipe to the pump station avoiding direct contact withthe pipe.Step 2. Insert storage tank sensor (GRAY wire) into storage tank sensor well. Route the wire along thereturn pipe to the pump station avoiding direct contact with the pipe.Step 3. Remove the wire strain relief bar on sensor terminal side of controller.Step 4. Connect the red collector sensor wire to T1 terminals (red and white wires).Connect grey storage tank sensor to T2 terminals (brown and white wires).Step 5. Replace wire strain relief bar.NOTICEDo not install the sensor wires in direct contact with system pipes. Route sensor wires onthe outside of system pipe insulation when ever possible.d) Sensors wires can be fed through the pump station and out the top to run along the collector return pipeor out the bottom along the tank return pipe (OUTSIDE THE INSULATION).e) Once all wires are connected to the controller and the strain relief bar screwed into place the cover canbe replaced.8.7. Pump Operationa) Fixed Speed Operation: The Apricus direct flow pump H[ft]station is supplied standard with a single speed Grundfos pump.In most domestic installs this standard pump will have sufficienthead pressure. See the performance curve to the right.See pump specification sheet in Appendix 9.i) Measuring Flow Rate: By utilizing the flow meter abovethe pump, the flow can be monitored. The system flow ratecan be adjusted by turning the flow restrictor screw (5/32”or 4mm Allen) on the flow meter.ii) Nominal Flow Rate: The recommended nominal flowrate for Apricus evacuated tube solar collectors is 0.026 G/tube/min or 0.1 L/tube/min. Refer also to section 3.5.b) Variable Speed Operation (recommended): The ApricusController allows for variable speed control of the Grundfospump. Refer to section 6.4 for programming details.1086420UP 15-29 SF Performance Curve0 2 4 6 8 10 12 14 16 18 20 22Q [US GPM]i) Flow Rate: When using variable speed control the full speed flow rate should be no more than 1.3gpm / 5 lpm per 30 tube collector. The restrictor screw on the flow meter can be used to adjust theflow rate to a suitable level.ii) Speed Setting: Initially set the “Min rev pump” value to 50%, then manually test the pump operationCopyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 74 of 126