I just wanted to share my setup I installed over the weekend. I purchased the Laing E1 pump that is meant for under the sink installation. My sump is about 20-25 feet from the display tank, in a utility room that is not insulated. Thus, my heating bill has been rather high. One concern I had was running plumbing 30 feet across my finished basement, the E1 solved this. Secondly, I wanted a pump made for 65 lbs of water pressure, again E1 solved this.
The Laing E1 is meant to be installed at the faucet furthest from the water heater. It has a hot/cold in and out ports. The top of the pump housing includes a check valve that opens when the pump is running and closed when not. This pump eliminates the need for a "cold loop" back to the heater utilizing the cold circuit while also utilizing the hot/cold circuits already in the utility room for the utility tub faucet. The pump also has a built in thermostat that starts the pump when it senses the water temp at 86 degrees and stops it when it reaches 96 degrees. It has a built in timer that is not needed in my setup with my aqua controller.
I currently have an aqua controller (RKE, sigh......) to control the pump on off. Therefore, 100ft of pex, Laing Pump, and various Pex fittings was all that was required to make this setup successful.
The hot supply is connected to a Tee that has one out to the hot side of the utility faucet and the second runs thru about 50ft of Pex that is submerged in the sump, then into the hot supply port on the pump. This Tee will prevent the 65ft of Pex from being heated by running the hot faucet alone. The only time the 65ft of Pex is heated is when the pump is running. This also requires a cap on the hot output of the pump.
The cold supply is connected to the cold supply of the pump and the cold out of the pump is then run to the cold side of the faucet.
I set the RKE to 77.5 degrees as a controller with the Hysteresis at .5 therefore allowing a 1 degree flux in heating. This may not be the final setting as I am still testing to see the best results. As of today, the pump is on for 5 min and off for 20 min.
The Laing E1 is meant to be installed at the faucet furthest from the water heater. It has a hot/cold in and out ports. The top of the pump housing includes a check valve that opens when the pump is running and closed when not. This pump eliminates the need for a "cold loop" back to the heater utilizing the cold circuit while also utilizing the hot/cold circuits already in the utility room for the utility tub faucet. The pump also has a built in thermostat that starts the pump when it senses the water temp at 86 degrees and stops it when it reaches 96 degrees. It has a built in timer that is not needed in my setup with my aqua controller.
I currently have an aqua controller (RKE, sigh......) to control the pump on off. Therefore, 100ft of pex, Laing Pump, and various Pex fittings was all that was required to make this setup successful.
The hot supply is connected to a Tee that has one out to the hot side of the utility faucet and the second runs thru about 50ft of Pex that is submerged in the sump, then into the hot supply port on the pump. This Tee will prevent the 65ft of Pex from being heated by running the hot faucet alone. The only time the 65ft of Pex is heated is when the pump is running. This also requires a cap on the hot output of the pump.
The cold supply is connected to the cold supply of the pump and the cold out of the pump is then run to the cold side of the faucet.
I set the RKE to 77.5 degrees as a controller with the Hysteresis at .5 therefore allowing a 1 degree flux in heating. This may not be the final setting as I am still testing to see the best results. As of today, the pump is on for 5 min and off for 20 min.
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