Recirc pump wireless remote control

Discussion in 'Tankless Water Heater Forum' started by Joe acquiost, Mar 14, 2020.

  1. Joe acquiost

    Joe acquiost New Member

    Joined:
    Nov 7, 2019
    Location:
    Kingston NY
    I have a Takagi TK3 that I installed with a recirc pump and a 5 gallon water heater tank, to soften the "cold sandwich". Using the tank thermostat, a clamp on pipe thermostat and some relays and a timer, it works to keep the temp in the recirc line at a reasonable temperature, so when I turn the tap(s) on, water will be hot.

    However, it is a bit complicated and, even with my schematics, some may find it tough to maintain. Getting older.

    Without going further along that line, I thought it might be smarter to just get a wireless setup where I could have a switch at each tap triggering a relay to run the recirc pump. Even eliminating the buffer tank, etc.

    So far I have found nothing that really fits and was thinking of building something. But, first, maybe some of you pro's know of something ready made?
     
  2. fitter30

    fitter30 Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Water will not be hot if recir pump comes on with water flow. Has to on a line stat or timer.
     
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  4. Stuff

    Stuff Well-Known Member

    Joined:
    Mar 7, 2013
    Location:
    Pennsylvania
  5. Joe acquiost

    Joe acquiost New Member

    Joined:
    Nov 7, 2019
    Location:
    Kingston NY
    Thanks. Similar to what I was considering.

    Since I have the pump, aquastat, etc already, I must decide if to use the Taco ($$$$) or the items on Amazon and Ebay ($) for the wireless part since they are no doubt fundamentally the same.

    I could buy the Taco stuff so those later on could simply replace with the same, or current parts, or, I could by 3 or 4 spare sets of no names for that price.

    Tough choice.
     
  6. Stuff

    Stuff Well-Known Member

    Joined:
    Mar 7, 2013
    Location:
    Pennsylvania
    I forgot to mention that the Taco remote assumes you have a pump with a thermostat. Essentially a dry contact momentary switch.
     
  7. Joe acquiost

    Joe acquiost New Member

    Joined:
    Nov 7, 2019
    Location:
    Kingston NY
    I have a strap on pipe aquastat on the return line that shuts off the pump when temperature is reached. It works in conjunction with the storage tank thermostat, some relays and a timer (so it does not cycle 24/7/365).

    I want to simplify things and make it a "true on demand" system. I may even remove the 5 gallon tank and live with the cold sandwich. Which, come to think of it may not be an issue as the "cold slug" may be past the last tap when the pump shuts off. If I lay it out correctly.
     
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