Question about Hayward Comfort Zone Electric Spa Heater 11kw

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What size breaker does the 11kw hayward comfort zone electric spa heater require?

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It does make a difference as to input voltage. But usually at 11KW this would be a 220V unit and require a 50 amp breaker. 11,000W divided by 220VAC = 50 amps. 230 or 240V input the same 50 A breaker.

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Posted on Aug 27, 2010

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There needs to be a buffer, 11% usually.
I've seen many 11kw heaters installed on a 60 amp circuit.

Posted on Apr 24, 2015

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Probally a burnt element. With heater on you need to check Amp draw. Then unhook the wires and check contunituity. Or pull the element out and give it a look. Good luck.

Apr 03, 2010 | Hayward Comfort Zone Electric Spa Heater...

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Their is a chatter guard built into the safty circut and it's job odley enough is to stop this from happening. Your heater needs the buffer this provides to keep the thermostat from cycling on and off when you are close to the set point. Good luck with this all the info you should need is in your book.

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My Hayward electric spa heater 11KW is coming on for thirty minutes, then throws the breaker. If I switch back on it will throw it again in another 30 mins or so. It appears to be heating then throws the...


Chances are that your element is drawing too much current. Check the manufacturer's website to make sure that you have the correct size breaker installed. Low water flow could also affect this, so make sure all of your baskets and filters are clean and clear.

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