Closed Loop Hot Water Heater

Glycol or some equivalent antifreeze fluid fills the collector and associated routing pipes.

Closed loop hot water heater.

This valve is simply screwed into the heater. A special water heater tank incorporating a heat exchanger works in conjunction with one or more flat plate roof mounted collectors. As the loop returns to the water heater it connects at the low point of the heater. The km series of heat transfer systems is designed for closed loop temperature control of common heat transfer fluids.

Whenever needed the storage tank draws heat from the heat exchanger and maintains a constant tank temperature. This is always the location of the heater drain valve. Most new solar homes feature a variation of one kind or another. The advantages of a continuously active heat exchanger loop are twofold.

Near the water heater area a recirculating pump pulls the water from the furthest fixture back into the water heater creating a loop. Attach a wrench to the valve and turn counterclockwise. The valves that are usually found in the closed systems are the check valve pressure reducing valve mixing valve backflow preventer and other. How to cut the wait for hot water in bathrooms that are a long way from the water heater.

A hot water loop uses a small pump to circulate hot water between a water heater and a distant bathroom or kitchen. If you have a dedicated return line then this is a great system to use. These units are completely packaged systems designed for a maximum operating temperature. Creating the loop is fairly easy.

A closed water heater system means that the hot water cannot expand beyond the valves and mix with the municipal water. I added a return line from two locations through a check valve in. This loop keeps hot water going throughout the house so when a fixture is used hot water is right there. This assist consists of having the return pipe from the remote location being smaller than the supply pipe.

The kms series is similar in design but includes a parallel cooling circuit. Closed loop active antifreeze systems are the most versatile and failsafe of all the solar supplemental water heating systems. A continuously operating pump is clearly wasteful. All that is required for this loop to function is for the water heater to be below the fixtures that you want hot water at and for there to be a bit of an assist to increase the loop s performance.