High-tech Protech. Thermal imaging ?
Figure this this one out. Cpvc hot cross over.
Have cold water crossing over into the hot side.
I already shut off all of the stops in the house including the laundry and water heayer inlet valve. I still get full flow out of the hot side. There are 5 delta moniter shower valves but I don't think it can be crossing thru those valves due to the check valves inside the cartridges. Even if there was a bad check, I wouldn't be getting 10gpm or more flowing thru a bad check.
Conclusion: there is an actual hard piped crossover.
The problem: how in the world am I ever going to find it? 5 bath 2 story home with the first floor roughed in under slab on grade.
Can you say "screwed"?
I already shut off all of the stops in the house including the laundry and water heayer inlet valve. I still get full flow out of the hot side. There are 5 delta moniter shower valves but I don't think it can be crossing thru those valves due to the check valves inside the cartridges. Even if there was a bad check, I wouldn't be getting 10gpm or more flowing thru a bad check.
Conclusion: there is an actual hard piped crossover.
The problem: how in the world am I ever going to find it? 5 bath 2 story home with the first floor roughed in under slab on grade.
Can you say "screwed"?
1 - 20 of 41 Posts
Have cold water crossing over into the hot side.
I already shut off all of the stops in the house including the laundry and water heayer inlet valve. <snip>
YOU SAID LAUNDRY. I assume that means washing machine.
Did the stops work? Is it a symmons or watts? [sometime the handel says off but the valve itself never moved with the handel. I have seen major cross overs at wash machines. It crosses right through the selonoid, when the washer is not in use. Also green house is customer using hose Y connections to get tempered water for plants. No checks installed ...
Some new clothes dryers now have a water connection to them. A garden hose wye is supplied with the dryer. I think they are steam or something.
And I learned not to assume anything. Turn off those tub shower faucets. Add valves if they are not there.
Home is roughly 5years old.
No anti-sweat valves in florida.
I don't think it can be backfeeding from a shower valve just because the volume is far beyond what could flow thru those tiny ports in the valves. I suppose I could turn them all on full blast without the shower head on just to be sure.
It's crossed over with enough volume that I can crack the t/p open with the heater inlet valve turned off and it runs full bore as if the inlet valve was wide open. The super high flow makes me think the crossover is actually hard piped in.........maybe even in 3/4". Its that much flow.
No anti-sweat valves in florida.
I don't think it can be backfeeding from a shower valve just because the volume is far beyond what could flow thru those tiny ports in the valves. I suppose I could turn them all on full blast without the shower head on just to be sure.
It's crossed over with enough volume that I can crack the t/p open with the heater inlet valve turned off and it runs full bore as if the inlet valve was wide open. The super high flow makes me think the crossover is actually hard piped in.........maybe even in 3/4". Its that much flow.
You have to ask yourself though what has changed? You have to assume that everything was ok until something happed so a hard piped cross over does not seem logical. I would be looking pretty hard at the T/S valves
When you say you still have full flow hot at fixtures I am assuming you have cold water, correct?
A hard piped crossover that didnt cause problems for 5 years is highly unlikely.
This is a vacation home near Disney. The home sits vacant for long periods of time. The owner lives in Dubai. It's very possible that this has been going on since day one and no one has said anything.
This home was constructed during the construction boom in this area. The homes in this neighborhood where built super fast and cheap. Usually by any warm bodies that the contractor could get to show up. Construction errors are common in this neck of the woods.
This home was constructed during the construction boom in this area. The homes in this neighborhood where built super fast and cheap. Usually by any warm bodies that the contractor could get to show up. Construction errors are common in this neck of the woods.
A hard piped crossover that didnt cause problems for 5 years is highly unlikely.
I might be missing something but are the shutoff valves working.
Can you electronically trace to the manifolds? Plastic will be difficult to locate.I would look first at the manifold behind the water heater. Disconnect all manifold lines and then I would connect a hose to the backflow and connect each individual manifold lines to a hose and see which one feeds the hot line behind the heater. Reconnect the manifold lines with exception to the cross connected line and discover what does not have water
I notice you said valve on water heater, is there only one heater? Another heater possibly? Is there maybe an unfinished bathroom with the rough in plug still in the tub valve? Another spot for washer and dryer that the plumbers forgot to uncross after they had the heater/s hooked up?
There are no manifolds. Its trunk and branch.Can you electronically trace to the manifolds? Plastic will be difficult to locate.I would look first at the manifold behind the water heater. Disconnect all manifold lines and then I would connect a hose to the backflow and connect each individual manifold lines to a hose and see which one feeds the hot line behind the heater. Reconnect the manifold lines with exception to the cross connected line and discover what does not have water
Any back-to-back shower valves? If so, I'd pull the trim and get a light/mirror or a seesnake micro in there and look for the work of a confused helper. With 4 connections in a small space, I could see something happening there.
Paul
Paul
Outdoor shower?
Recirc. line brought off of the cold system and not the hot?
Paul
Recirc. line brought off of the cold system and not the hot?
Paul
What is it you were called for? A new water heater? It is possible the ballvalve on the cold inlet to the water heater is broken and not closing.
1 - 20 of 41 Posts
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