valves to control water pre-heating and circulation

valves to control water pre-heating and circulation

The maze of valves is not actually difficult to use, if required. We can run as it is shown, with the passive solar feeding the gas-fired heater; we can run all solar, or we can run all gas-fired. There are two recirculation pumps to keep the wait times for hot water very low. One pump recirculates through the roof solar system and they all feed a mixing valve.