Domestic Hot Water Recirculation System Diagram

Smartplus hot water recirculation can save up to 12 000 gallons of water each year and reduce electrical consumption up to 94 when compared to traditional continuous run domestic hot water recirculation pumps.
Domestic hot water recirculation system diagram. Over the past few years dhwr lines have become popular in residential applications as well. This ensures that hot water is available instantly at every tap throughout a residence. Calculate the gpm required using a 10 f δt or other value as determined by the engineer. Our hot water recirculating system supplies hot water instantly at every faucet or shower.
Hot water recirculating systems hot water recirculating systems. There s more to designing a domestic hot water dhw recirculation system than just adding another pipe and circulator. Domestic hot water recirculation steps. From a cost and environmental point of view far less water is wasted each time a hot water faucet is opened saving an average of 12 000 gallons of water annually for a typical four person.
Ideally hot water should arrive at the fixture between zero and ten seconds from the time a faucet or fixture valve is opened. The on demand pump controller is contained within the utility closet and works from any plumbing fixture. Part 1 find the pump gpm determine the heat loss of the total supply pipe using tables or rules of thumb. Provides on demand hot water throughout your house without the need to install buttons and run wires.
Rather than relying on low water pressure common in most water lines recirculating systems rapidly move water from a water heater to the fixtures. Have a question or two. A hot water recirculation system is a plumbing system that moves hot water to fixtures quickly without waiting for the water to get hot. Adding a return line to the domestic hot water system creates a closed loop path that allows the water to circulate back to the water heating source to keep the lines warm when fixtures and.
There are a couple of manufacturers that offer fittings and designs to allow the hot water to circulate right up to the fixture and some manufacturers allow. No more waiting for the water to warm up. The armstrong astro 2 hot water re circulation system automatically circulates water through domestic water pipes. The smartplus has all the features and functionality of the original design with the addition of the following new and exciting features.
Visit our customer support page to find the answers you re looking for. John siegenthaler p e a favorite g. Commercial applications continue to include domestic hot water return or recirculation lines as a best practice. Saves water time and money.
On demand recirculation pump for hot water recirculation system.