The Guardian IP is an indirect solar water heating system designed to accommodate climates where freezing weather occurs more frequently and a drain back system cannot be installed. The solar storage tank and the solar collectors do not differ from those utilized in the Guardian direct solar system. The only difference lies in the way that the water is processed through the solar collector and back to the storage tank; your potable water is heated indirectly through a

heat exchange coil. The Guardian IP units' automatic solar circulation pump sends a mixture of water and food grade propylene glycol through the solar collector and back to the heat exchange coil. Heat is transferred to your potable water via the exchange coil which is wrapped around the inner collection tank. The Guardian IP system is freeze proof because the solution in the solar loop is an 8:1 ratio of water and food grade propylene glycol. The Guardian IP solar system is only recommended in climates that experience frequent freezing conditions, and where a Guardian DB system cannot be installed so that it will drain.

Indirect IP Solar Schematic

Follow the blue arrows from the bottom of the heat exchange coil as they rise up the solar supply line. This illustrates the path of the freeze proof solution as it circulates through the solar collector(s). As the heated mixture travels through the exchange coil it transfers its heat to your potable water housed in a separate storage tank. The automatic controller powers the circulation pump continuously as long as sun is available to heat the water. The controller will turn off the solar system if no heat is available from the solar collector(s), or if the solar storage tank has reached its high limit shut off temperature. During prolonged periods of inclement weather your internal back-up heating element will take over ensuring you and your family have all the hot water you need.

The LeverEdge has been manufacturing Guardian Solar Water Heating kits for more than 25 years. Solar water heaters can involve quite a number of components if constructed in a thorough manner. The LeverEdge provides a simple solution to the complexity of these systems by packaging them in kits. The Guardian IA solar water heater is a complete kit that includes all of the components (large and small) necessary to complete the perfect solar water heating system. But that's not all! The Guardian solar water heating system also comes with many of the components already prefabricated which dramatically reduces the time necessary to install the system and virtually eliminates mistakes by the installing contractor.