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oil pan 4 · 11-11-16, 02:00 PM

The only thing better than saving water is when you save water and energy.
I just installed a tankless water heater and the wall between the kitchen and bathroom is mostly torn out.
I would like to plumb in a return line for a hot water recirculating pump. I know you can plumb the return of a recirculating pump into a cold water line at a sink but the sinks at my house are the closest hot water heat using items distance wise from the water heater. The shower is the furthest away and that's kind of the whole point.
I also want to put the hot water recirculating pump on the bath room light switch circuit, so when the light is on the pump runs but I would like the pump to turn off after a minute or 2. The timer on the recirculating pump is a 24hr timer. So as far as I can tell it's useless for what I want to use it for.
I was looking at using a watts recirculating pump like they sell at lowes and home depo.
I was looking at using an adjustable time delay relay that is on when power is applied then turns off after a set time. Is there a timer out there for this or should I just find a 120v industrial process control timer and repurpose it?

11-11-16, 02:00 PM	#1
oil pan 4 Land owner Join Date: Nov 2012 Location: NM Posts: 1,026 Thanks: 12 Thanked 127 Times in 107 Posts	Hot water recirculating pump setup The only thing better than saving water is when you save water and energy. I just installed a tankless water heater and the wall between the kitchen and bathroom is mostly torn out. I would like to plumb in a return line for a hot water recirculating pump. I know you can plumb the return of a recirculating pump into a cold water line at a sink but the sinks at my house are the closest hot water heat using items distance wise from the water heater. The shower is the furthest away and that's kind of the whole point. I also want to put the hot water recirculating pump on the bath room light switch circuit, so when the light is on the pump runs but I would like the pump to turn off after a minute or 2. The timer on the recirculating pump is a 24hr timer. So as far as I can tell it's useless for what I want to use it for. I was looking at using a watts recirculating pump like they sell at lowes and home depo. I was looking at using an adjustable time delay relay that is on when power is applied then turns off after a set time. Is there a timer out there for this or should I just find a 120v industrial process control timer and repurpose it?