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Terry Coombs[_2_]

On 6/5/2017 11:06 AM, wrote:
Since this involves metal plumbing I figger it's probably OK to post
my questions. Because of the way my house is plumbed it takes a long
time for the water to get hot at a few fixtures. I could put little
water heaters at these fixtures but that would require running power
to the fixtures. Though this could be done it wouldn't be easy. I
looked at two types of recirculating systems and both are lacking. One
relys on a thermostatic valve opening up between the hot and cold
pipes when the hot side cools enough. For the system to work a pump
must be operating , to keep the hot side at a higher pressure. The
other sustem I looked at requires running wires from each fixture. The
wires power a solenoid valve and provide a signal to turn on a pump.
But that would require running wire which as already stated isn't that
easy. I'm wondering if maybe a check valve and a differential switch
could be used to turn on the pump when the thermostatic valve opens.
The valve doesn't require power and each fixture can have its own
valve. Or just one valve can be installed at the furthest fixture.
Advice anyone?
Thanks,
Eric

I have that long-time-til-hot problem at the dishwasher/kitchen sink
.. Probably aggravated by me using all 3/4 PVC right up to where the
service comes thru the floor . In my case though , it's going to be
relatively easy (we're still constructing) to add an instant-hot water
heater under the sink . Just gotta get the unit and see what wire I need
.. I might get lucky and be able to use the 12 ga I have on hand .

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Snag