hardwite
Member
A recirc system with a timer that works well when the timer is on. But when off, the furthest appliance needs ~5 minutes to receive hot water. It is a long loop. I would like to split into two smaller loops to reduce the time. A shorter time would also allow me to turn the pumps on from the bathroom right before use (on the as-is loop, the user will have to wait ~5 minutes before turning on the shower or hot water faucet).
I am not interested in smart systems that try to time usage.
I do not want to increase the on-time - defeats the purpose and doesn't address use when timer is off.
The loop system is as shown below. It loops hot water from the tank and back to the tank. Here is the loop as-is:
Simplistically, the new loop would look like this:
My questions are: do you advise having two pumps on one tank (pulling from one tank outlet and pushing into one tank inlet)?
What other solutions for this issue?
How do I size the new pump? I have a rough idea of the pex sizes and lengths. I believe 3/4 pex for the loop, and 1/2 for the taps to the appliances. See these pictures of the loop pex and an example tap.
I have the pump information but do not know how to calculate its exisitng head pressure and flow rate, and do not know how to do the same for a two loop system.
Pics of the water heater and connections
Thanks!
Ted
I am not interested in smart systems that try to time usage.
I do not want to increase the on-time - defeats the purpose and doesn't address use when timer is off.
The loop system is as shown below. It loops hot water from the tank and back to the tank. Here is the loop as-is:
Simplistically, the new loop would look like this:
My questions are: do you advise having two pumps on one tank (pulling from one tank outlet and pushing into one tank inlet)?
What other solutions for this issue?
How do I size the new pump? I have a rough idea of the pex sizes and lengths. I believe 3/4 pex for the loop, and 1/2 for the taps to the appliances. See these pictures of the loop pex and an example tap.
I have the pump information but do not know how to calculate its exisitng head pressure and flow rate, and do not know how to do the same for a two loop system.
Pics of the water heater and connections
Thanks!
Ted