RV Freeze Protected Solar Water Heater Kit: With External Heat Exchanger

If your RV water heater does not have a built-in heat exchanger but you still want to install a freeze protected (closed loop) system this kit is for you. It contains everything you need to add a high quality freeze protected solar water heater to your RV. Included is a compact stainless steel heat exchanger (316 alloy) and all other parts required for a closed loop system. The antifreeze in the solar loop is heated by Heliatos SW-38 solar water heating panel. This panel is robust enough to be mounted on a vehicle at highway speeds, has unbreakable twinwall polycarbonate glazing, and a strong aluminum frame, yet only weighs 12 lbs. Each kit comes with: Your selected quantity of Heliatos SW-38 Solar Water Heating Panel  1 Heliatos HS-21 solar circulation pump 1 TopsFlo TD5 Stainless Steel Circulation Pump  1 25 Watt PV Solar panel to power the pump  Wire and PV panel mounting tabs  25 ft of 1/4" PEX tubing Amtrol #15 Expansion Tank RV Glycol Fill and Purge Valve with Drill Pump and Ins