Drain-Back system features
1. Protection against extreme temperatures. Whether at times of frost or high solar radiation, the collectors are free of liquids in order to avoid overpressure and safeguard the whole system.
2. Easy installation. On including all the necessary elements for correctly managing the primary circuit, it is only necessary to install the solar panels and join them to the tank.
3. Economic. The automated drainage system avoids the installation and maintenance of drain traps and an expansion vessel, essential in a conventional solar installation.
Other advantages:
- Under maintenance. The automated drainage system avoids the installation of drain traps, glycol and an expansion vessel, essential in a conventional solar installation, and elements with a high failure rate in pressurised installations.
- Better use of solar heat.