Domestic Hot Water Return Pump

Grundfos have a range of secondary circulators made from materials suitable for installing in domestic hot water systems.

Domestic hot water return pump. Part 1 find the pump gpm determine the heat loss of the total supply pipe using tables or rules of thumb. Domestic hot water recirculation steps. Time for hot water to reach fixture without circulation pump. Adding a hot water recirculating pump like the bacoeng to your hot water system can save money on both your electric and water by routing hot water to your faucet and cold water back into the hot water heater.

Today these products are the ideal solution to providing hot water without undue waiting time saving on water usage and are especially useful in larger properties. Features and benefits vary by model. The grundfos comfort pm autoadapt provides access to instantly hot water efficiently reduces the annual waste of domestic water and reduces the power consumption too. Designing a domestic hot water recirculation system is not typically difficult.

Using a hot water recirculation pump eliminates instantly this expensive and annoying wait. The grundfos comfort pm autoadapt sets new standards for energy efficient and intelligent hot water recirculation in private homes and offers the ultimate in control with three products. Where a thermostatic mixing valve is used in a system with a hot water recirculating pump the hot water or tempered water return line shall be routed to the cold water inlet pipe of the water heater and the cold water inlet pipe or the hot water return connection of the thermostatic mixing valve. Typically for systems where the distance from the hot water heater to the consumption fixtures exceeds 25 30 m.

Demand circulation controls dilemma. A return circulation pipe is sometimes provided in a hot water system where it is desirable to have hot water available continuously at the fixtures. As hot water moves through your house your it cools off and needs to be reheated. 1 us gpm 0 0630 liter sec.

By turning off the recirc pump the hot water stays in the water heater which is much more efficient at keeping heat. This water pump is installed on the hot water intake and outflow lines and has advanced features like 1 2 deep threading to help prevent leaks. Near the water heater area a recirculating pump pulls the water from the furthest fixture back into the water heater creating a loop. In a traditional hot water recirculating system there is a dedicated return line for the hot water pipes which runs from the furthest bathroom or fixture back to the water heater.

Comfort when you need it. Calculate the gpm required using a 10 f δt or other value as determined by the engineer. In fact we see the exact same model recirculation pump used in application after application without incident as this one pump is typically able to meet the minor head and flow requirements of most recirculation syste. The system includes an alpha 15 55 circulator pump with a permanent magnet motor a temperature sensor and two push button controls.

Studies show that hot water is used less than 3 of the time.