JohnC Posted July 18, 2010 Report Share Posted July 18, 2010 I came across this under a bathroom sink. Can anyone tell me the reason for this device? It says pump on the device and has a timer? Owner has no idea what itââ¬â¢s for. None of the other bathrooms have this Thanks Click to Enlarge 39.71 KB John Quote Link to comment Share on other sites More sharing options...
Erby Posted July 18, 2010 Report Share Posted July 18, 2010 How was the water pressure at that sink if you unplugged the pump? Quote Link to comment Share on other sites More sharing options...
kurt Posted July 18, 2010 Report Share Posted July 18, 2010 A misapplied idea of a circulated hot water system. Quote Link to comment Share on other sites More sharing options...
JohnC Posted July 18, 2010 Author Report Share Posted July 18, 2010 Water pressure was fine. Thanks John Quote Link to comment Share on other sites More sharing options...
Bill Kibbel Posted July 18, 2010 Report Share Posted July 18, 2010 Here's a simple diagram that I use to show folks how it works: Click to Enlarge 27.22 KB Quote Link to comment Share on other sites More sharing options...
Bain Posted July 18, 2010 Report Share Posted July 18, 2010 Here's a simple diagram that I use to show folks how it works: Click to Enlarge 27.22 KB Why do the instructions want the pump beneath the sink furthest from the heater? If hot water is recirculating, it's recirculating (Or apparently, maybe not.), so why is this system ostensibly more efficient than the Grundfos systems we typically see right beside heaters? Quote Link to comment Share on other sites More sharing options...
Jim Katen Posted July 18, 2010 Report Share Posted July 18, 2010 Why do the instructions want the pump beneath the sink furthest from the heater? If hot water is recirculating, it's recirculating (Or apparently, maybe not.), so why is this system ostensibly more efficient than the Grundfos systems we typically see right beside heaters? Typical hot water circulating systems -- those that are actually planned in advance -- use a dedicated pipe to bring the hot water back to the water heater. These systems are for people who's plumbing system wasn't intended to have a hot water circulating system. They use the cold water pipes as a return path for the hot water. If you don't use the sink farthest from the water heater, the one that *is* farthest from the water heater won't get the benefit of the circulation. In my experience, with these systems you trade waiting for hot water for waiting for cold water. - Jim Katen, Oregon Quote Link to comment Share on other sites More sharing options...
Bain Posted July 19, 2010 Report Share Posted July 19, 2010 Why do the instructions want the pump beneath the sink furthest from the heater? If hot water is recirculating, it's recirculating (Or apparently, maybe not.), so why is this system ostensibly more efficient than the Grundfos systems we typically see right beside heaters? Typical hot water circulating systems -- those that are actually planned in advance -- use a dedicated pipe to bring the hot water back to the water heater. These systems are for people who's plumbing system wasn't intended to have a hot water circulating system. They use the cold water pipes as a return path for the hot water. If you don't use the sink farthest from the water heater, the one that *is* farthest from the water heater won't get the benefit of the circulation. In my experience, with these systems you trade waiting for hot water for waiting for cold water. - Jim Katen, Oregon Ahh, gotcha. I wasn't quite clear on why the faucets were connected to the pump and intended to take another look when I had time. Now, I don't have to. Quote Link to comment Share on other sites More sharing options...
JohnC Posted July 19, 2010 Author Report Share Posted July 19, 2010 Thaks Bill for the diagram. John Quote Link to comment Share on other sites More sharing options...
Tom Raymond Posted July 19, 2010 Report Share Posted July 19, 2010 The instant hot water system I use is even simpler than that, my wife gets up and uses the bathroom first [] Quote Link to comment Share on other sites More sharing options...
GrantJones Posted July 19, 2010 Report Share Posted July 19, 2010 The instant hot water system I use is even simpler than that, my wife gets up and uses the bathroom first [] Ha! Yeah, my wife installed one of those. The timer is on my side of the bed instead of under the sink. Quote Link to comment Share on other sites More sharing options...
robert1966 Posted August 5, 2010 Report Share Posted August 5, 2010 I have seen a similar device with a timer as well, but it was at a wet bar. Same application I quess. Quote Link to comment Share on other sites More sharing options...
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