If freeze protection is an issue than a closed system with anti freeze is a good idea.
Closed circuit solar water heater.
Gmoi series family has 150l 200l and 300l solar hot water system.
The heat exchanger is filled with closed circuit fluid and is connected to the solar collectors forming a closed circuit.
This water heater is an indirect solar hot water system with a heat exchanger in the solar storage tank.
The valves that are usually found in the closed systems are the check valve pressure reducing valve mixing valve backflow preventer and other.
Collectors array closed circuit pump and expansion tank regulation heat exchanger.
This water heater is a closed circuit solar hot water system with a heat exchanger in the solar storage tank.
The closed circuit series solar water heaters have a means of controlling the maximum temperature of the water in the storage tank.
A closed water heater system means that the hot water cannot expand beyond the valves and mix with the municipal water.
The closed circuit fluid is propylene glycol concentrate mixed with water.
The down side is two heat sources.
Gmo roof top solar water heater save space on the ground and its simple can compact design make it high efficient and reliable.
These systems may be installed with a hartstat valve located between the hot outlet of the collectors and the inlet to the tank heat exchanger.
The advantage of a drain back system is built in freeze and overheating protection.
Gmoi series is a roof mounted closed circuit solar water heater designed to provide economic service it is suitable for frost prone or harsh water chemistry areas.
How your water heater works solar operation the solahart streamline closed circuit solar water heater has its vitreous enamel lined solar storage tank installed at ground or floor level remotely from the solar collectors.
All water heaters waste heat energy even when the burner is off and the unit is sitting idle between heating cycles.
This water heater is an indirect solar hot water system with a heat exchanger in the solar storage tank.
Solar water heating primary circuit.
The premier loline replaces water in the panels with a special heat exchange fluid with anti freeze properties.