All Sunergy Solar Water Heaters include:
1. A combination high temperature & high pressure safety relief valve. This safety valve ensures that your system is not damaged due to high incoming water pressure, and also ensures that if the water in your tank approaches an unsafe level, some of it is released and the water in the tank is cooled to ensure the safety of everyone in your building.
2. A magnesium anode to provide additional corrosion protection for your system.
3. All standard systems have no electric backup pre-installed. However, if required/requested at the time of installation/purchase a backup electric heating element can be installed, with an electronic heating controller provided for its control. These optional extras will be added at this time at no extra charge. (Please note, if the electric backup is required, power and wiring will need to be provided by an electrician)