Question about Laing Thermotech Autocirc Undersink Instant Hot Water Circulating System

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NEED DIAGRAM ON INSTALLING UNDER SINK INSTANT HOT WATER CIRCULATING SYSTEM?

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Open following link for Re-circulation information and resources, including diagram of installation and operation:
http://waterheatertimer.org/Water-heater-recirculation-system.html

Upvote the help.
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For a price, expert works with you while you work on autocirc or any do-it-yourself project.
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Posted on May 08, 2011

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Posted on Jan 02, 2017

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In sink erator instant hot tank leaking at the bottom of the tank


Must replace tank.
Insinkerator stainless steel tank does not have anode rod to protect against depleted tank wall.
Copy following link for tips installing under counter heater, and manuals for several different brands
http://waterheatertimer.org/How-to-install-under-counter-water-heater.html
Add comment as needed and fixya will not send me email to reply with more detail

Jul 15, 2013 | Water Heaters

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Cold water runs good; hot water diminished flow then shuts off completely.


Question posted under autocirc recirculating system.
Unknown if system has been taken apart and cleaned with white vinegar, or if faucets are single-handled.
Open following links to help isolate possible problems.
http://waterheatertimer.org/Water-heater-recirculation-system.html
http://waterheatertimer.org/Crossover.html

Oct 08, 2011 | Laing Thermotech Autocirc Undersink...

2 Answers

Where can I get the wiring diagram for the Laing Autocirc? I want to wire in a momentary switch so that when I am ready to get in the shower I hit the switch and the pump runs until the water is warm and...


If you have the same Autocirc product I have, then it cannot be taken apart. The timer seems to be connected and sealed together with the pump. If yours is different, answer back with the wires that you can see and we'll see if the timer can be by-passed.
http://waterheatertimer.org/Water-heater-recirculation-system.html

With the ordinary Grunfos-type pump that is not on a timer, you can add a switch and have the pump work on demand as you describe.

And they make a product that does the specific job you describe. It's called a Demand Pump. Link above shows two different types at page bottom.

I have not tested either Demand Pump shown. They operate on-demand ... when you activate the pump, the pump quickly brings water over from the hot water heater.

So the Demand Pump has a higher volume pump than the Autocirc or Grunfos.

I question a two things about the Demand Pump. 1) How will the increased pump pressure affect local pipes, especially supply tubes under a sink. 2) How HOT does the pump get? If pump gets hot, and it is located under bathroom sink next to paper goods, then that is a hazard. Some regional building codes don't allow ceiling light bulbs in closets because the bulbs get hot and start fires when people pack their closets full.

Oct 23, 2010 | Laing Thermotech Autocirc Undersink...

1 Answer

Punp ACT 303-BTW was working fine. Got some water leak under sing. Disconnected the pum fron electricity, dryed good and when plug it in had a "POP" sound and lightning fron under the timer. It kept...


if you had a "pop" and lightning from the timer....
the water got into the electronics.
its time to replace.
getting hot.... was the cartridge either spinning dry, or spinning but not able to move water, did you have a valve off somewhere?
you might call laing or one of their distributors and see if its under warrantee.
where are you located, I can probably help you find a distributor.

Aug 20, 2010 | Laing Thermotech Autocirc Undersink...

1 Answer

Can this unit be used with a tankless hot water system


Isn't the undersink unit hooked to the cold water pipe? If this is the case, the undersink unit is not affected by the tankless unit!

Mar 01, 2010 | Laing Thermotech Autocirc Undersink...

1 Answer

Size and installation for instant water heater


Ariston gl4.0 should be fine if used inline with your hot water heater. Used alone it will likely run out when dishwasher is filling and you are using sink.To use your existing hot water for backup: 1 connect existing HOT water line to cold (inlet) on ariston, 2 Then HOT (outlet) from ariston to sink and dw. If you want instant hot water at a sink 10 feet away: use 3/8 pex pipe from ariston to sink, so you only have to run off a cupful or 2 before hot water arrives at sink.

Aug 30, 2009 | RTO Ariston Gl4.0 Instantaneous Electronic...

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