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Programmable Timer for 1 Min On/5 Min Off Cycle With Daily Time Windows for Pump

widaw 1920 2
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  • #1 15171214
    widaw
    Level 17  
    Hi. I would like to reduce the running time of the hot water recirculation pump as much as possible.
    It seems to me that I will achieve the goal by optimising its operating time. The pump should switch on every day between 6.00 - 8.00 and e.g.: 16.00 - 22.00.
    I know that such a cycle can be achieved with the simplest timer for 20 PLN.

    However, my experience shows that 1 minute of pump operation, with a 5-minute break in operation, is enough to maintain continuity of hot water in the furthest tap. I would achieve further savings with such a pump cycle.

    What timer should I use that would run automatically on a cycle of 1 min on - 5 min off with a condition to run at specific times?
    The solution with a temp sensor does not seem to me to be a possible solution.

    thank you in advance for your help.
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  • #2 15171544
    D214d3k
    Level 39  
    Clock (regular) + timer probably best.
  • #3 15171659
    widaw
    Level 17  
    Too many combinations with dual control. I'd like the clock to be immune to power supply failure (which often happens).
    I found a PCZ-521 clock on the web. It clips onto a strip, has a capacity of 500 cells, so I should theoretically set 250 cycles in it.
    Just curious, how does this theory, relate to the actual operation of this clock?
    Has anyone used it?
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