Question about RTO American Heat Tankless Electric Water Heater

3 Answers

Wired yellow to green,blue to black,red to red.bearker trip

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  • natfl Aug 08, 2010

    tankless water heater has yellow,red, blue wiring,need wire it to red,black,white

  • natfl Aug 08, 2010

    Dont see two other message posted.I wired disconnet box wrong.Just ordered a new breaker one side blue out.did not try the unit ,the disconnet box doesnt work good now eather,must get new parts first.To be sure I must get info to wire the only three wires in a cord whitch are yellow,red,blue to red,black,white.60 amp breaker,#6 romax wire

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What model is your Electric Tankless water heater? I will need to see the specs of the unit before offering advice.

Posted on Aug 09, 2010

  • natfl Aug 11, 2010

    american heat super-adk 1 ,Have three wires,yellow with green strip,nuetral?,Blue,red,load?please send email before new breaker sent to me.

  • NOT ME Aug 11, 2010

    The Super ADK-1 requires a 60 amp 240 volt breaker and you must use #6 AWG gage wire. This unit draws a max of 57 amps so nothing smaller is safe. This is very large wiring and hard to work with but that is what it takes. Make sure you get a 60 amp disconnect. If you can see the water heater from the service panel you do not need a disconnect. If not a disconnect is mandatory. The incoming electrical service will have 2 wires and ground. Black & White are each are hot and each carries 120 volts for a total of 240 volts, Green or solid copper is ground. On the heater the scematic should show you which is hot and which is ground. I would think the red and yellow are hot and the blue is ground but to be sure look at the unit.

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Can you give me the model # of your unit?

Posted on Aug 08, 2010

  • 6 more comments 
  • natfl Aug 08, 2010

    american heat super-adk 1 tryed two wire ,red to red,yellow to white,blue to black,breaker trip

  • Sean Wright
    Sean Wright Aug 08, 2010

    You just told me a different way you hooked up the wires then in your first post...



    How are the wires connected?



    And....what size breaker is on the circuit controlling it?

  • Sean Wright
    Sean Wright Aug 08, 2010

    You need a 60 AMP breaker for that model...if your breaker is less than that, then it will keep tripping even if the wires are hooked correctly.



    Here is a copy of the install manual...



    http://www.americanheatus.com/downloads/...

  • Sean Wright
    Sean Wright Aug 08, 2010

    You do realize I hope that this is a 220V appliance and needs to be hooked to 2-3 b reakers( depending on model) and it is not a single breaker hookup.

  • natfl Aug 08, 2010

    Found that both red

  • natfl Aug 08, 2010

    found both hot leads on same post in disconnect box, changed them but will not wire the unit until I am sure how to.The diagram doesent,match what I see.Need to wire yellow,red,blue to red,black,white

  • natfl Aug 08, 2010

    have 60 amp breaker

  • natfl Aug 08, 2010

    have #6 romax wire

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OK Black is the PHASE... In USA, So that may actaually go to the RED, goes to the Black. The Green MUST be earth
So I guess that leaves RED as Neutral? Doesn't sound right, so I wonder if your wiring is right.
The breaker trips because there is a short circuit, OR the Phase is touching Earth.
It does sound logical though the way you have it wired, I would have thought that would have been correct...
Are you sure you don't actually have fault, within the unit?
You need to meter the Phase & Neutral, and see what's what. IF you DO have it OK, and I suspect you do, then there MUST be some other issue.

Posted on Aug 08, 2010

  • natfl Aug 08, 2010

    my message was mistake,red to red,white to yellow,blue to black,in the disconect box.Couldyou send another massage.Thank you

  • natfl Aug 08, 2010

    need to know how to wire yellow,red, blue wires to red, black, white, 220 tankless water heater

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