Fan Assisted Water Heater Power Requirements


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Old 05-20-14, 03:47 AM
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Fan Assisted Water Heater Power Requirements

Typically what are the power requirements for a gas water heater with a inducer fan that exhausts thru PVC? Do they need a dedicated circuit?
 
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Old 05-20-14, 04:36 AM
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Yes they should have a dedicated circuit...
 
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Old 05-20-14, 07:00 AM
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Looking at my W/H the fan motor draws 5 amps. That is not 50% of a circuit, so according to the NEC, it does not need a dedicated circuit.

You can put it on one if you choose, but IMO it is a waste of a circuit space.
 
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Old 05-20-14, 07:29 AM
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Page #12 item line #1..

| A. O. Smith Water Heaters

Its not the power draw why a dedicated circuit, Its the sensitive gas valve that some line circuits can cause interference. Such as a line with florescent lighting, or what not...

Then the unit gets plagued by trouble codes...
 
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Old 05-20-14, 07:36 AM
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Mine is not that fancy. I guess it pays to buy crap. (Although my has been trouble free so far)

I still feel it is a waste of a circuit, like putting a refrigerator on a dedicated circuit, but you are required to follow the manufactures requirements.

BTW - its page 13.
 
 

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