Apricus Solar Water Heating System Installation and Operation ...

Apricus Solar Collector Installation & Operation Manual - USAWARNINGThe following maintenance may ONLY be completed by Authorized PersonS11.3. Broken Tubea) If a tube breaks, it should be replaced, as soon as possible to maintain maximum collector performance.b) The system will still operate normally and safely even with a tube broken.c) Always wear safety goggles and gloves when handling broken glass. Any broken glass should be clearedaway to prevent injury.d) To replace a tube:i) Remove the tube clip(s), slide broken tube out and carefully pick up any glass pieces. Protectivegloves and safety glasses must be worn when handling broken glass.ii) Avoid touching the glass wool insulation with bare hands, as it can cause mild skin irritation. Weargloves.iii) If the heat pipe is not easily removed (commonly the case), it can be left in place and a newevacuated tube inserted, guiding the heat pipe down the groove between the evacuated tube inner walland heat transfer fin. If the heat pipe is easily removed, the easiest option is to replace the heat pipeand evacuated completely.11.4. Insulationa) The pipes running to and from the collector should be completely insulated. Insulation should be checkedperiodically (at least once every 3 years) for damage or gaps, especially exterior EPDM foam insulation.b) For any insulation that is exposed exterior conditions, (sunlight and water), ensure protective cover/wrap/foil is in good condition, replacing as required.11.5. Heat Transfer Fluida) Heat transfer fluids that are exposed to stagnation temperature may break down over time, which willcause the fluid to become acidic and loose anti-freeze properties. It will general become “sludgy,” which canreduce circulation efficiency. This is particularly the case for GRAS propylene glycols, but will also occurwith “high-temp” rated glycols, such as DowFrost HD. Refer to 3.31 for more information on heat transferfluids or consult the manufacturer of the fluid.b) Ideally, heat transfer fluid should be inspected and tested annually, but least once every 3 years. Thefollowing checks should be completed:i) Check for cloudiness or sludging that would indicate indicate fluid breakdownii) Check pH, should be within the range specified by the manufactureriii) Use hydrometer to check freeze protection level11.6. Draining the Collectora) During system maintenance or in preparation for extremely and/or extended cold conditions, draining thecollector manifold may be required. If the building is going to be vacant for longer than 45 days at a time,the system must be drained and the collectors covered with a tarp. Refer to sections 7.10 and 8.9 forspecific instruction on draining.11.7. Other Componentsa) Other parts of the system such as the storage tank and the electric, gas or tankless water heater or boilershould be serviced and inspected according to their specific manufacturer’s maintenance guidelines.Copyright 2011 – Apricus Inc Doc: A7-05.4.1.4-PB-1.9 Page 82 of 126