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Code Question: Distance between gas appliance and Service Panel?

Code Question: Distance between gas appliance and Service Panel?


Old 09-26-09, 02:23 PM
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Join Date: Sep 2009
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Code Question: Distance between gas appliance and Service Panel?

Hi folks. I'm springing a shed addition off of the back of an existing structure. The old structure is currently heated with a sealed combustion direct-vent Empire wall furnace (one of those 16"w x 72"h things), and the new addition covers the current location of the heater.

It needs to move, and it would be aesthetically, functionally, and economically preferable to move it somewhere else on the same wall. There is exactly one spot on the wall that meets the heating appliance's various setback requirements (from the new structure, the edge of the building, etc, etc), and that happens to be right next to the two 100A service panels that run the building.

I see nothing in the otherwise thorough list of placement restrictions for the heater that would preclude putting the heater next to a service panel... but is there something in the NEC that would restrict it?

The heater is surface mounted, is 12" deep, has a front intake/discharge for the heat and return air. The service panels are flush into the wall. The piping union for the gas inlet would be about 40" below the bottom of the breaker panel.

Anyone see a problem with this?

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Old 09-26-09, 09:03 PM
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Join Date: Feb 2005
Location: Near Lansing, Michigan
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The heater and gas line can be next to, but not directly over or under the panels. The panels require a floor-to-ceiling clear space of 30" wide in which there are no other utilities. The panel does not have to be centered in the 30". You basically need to be able to slide a refrigerator box up to the panel without hitting anything else.

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