Tempra 24 24.0 kW tankless water heater modification

Discussion in 'The Projects Forum' started by yonkss, Oct 2, 2014.

  1. yonkss

    Thread Starter New Member

    Oct 2, 2014
    1
    0
    I have a
    Stiebel Eltron
    Model # Tempra 24
    Tempra 24 24.0 kW Whole House Tankless water heater. I want to install a on delay relay from the flow switch so unit will not run for 5 or so seconds after flow is sensed. This is to alleviate the problem of a quict turn on to rinse hands and the unit starting and not actually getting hot water to the faucet. Bill way too high.
     
  2. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,986
    745
    why don't you use the cold tap instead to rinse your hands?
     
    SgtWookie likes this.
  3. Alec_t

    AAC Fanatic!

    Sep 17, 2013
    5,800
    1,103
    Google 'time delay relay'. But I second Dodgydave's method :).
     
  4. tom_s

    Member

    Jun 27, 2014
    285
    333
    never liked the idea of electricity heating water. also voting for the cold water :)
     
  5. wmodavis

    Well-Known Member

    Oct 23, 2010
    737
    150
    Dave has the optimum plan.
    Train users to use cold water tap instead of hot unless they absolutely want/need the water heated.

    I have a whole house electric water heater and think it is an efficient way to go.
    People can be trained.

    Now if you set the delay to 10 min that might help users to get the idea. Forced training.
     
    Dodgydave likes this.
  6. crutschow

    Expert

    Mar 14, 2008
    13,014
    3,234
    Any delay on the turn-on of the water heater will just waste water when you actually want hot water.

    I vote will all the rest. Use the cold water faucet if you aren't going to wait for hot water. If necessary, to train others in the house, post a sign. ;)
     
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