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Old 07-06-2007, 02:37 PM
M Kelekci
 
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HVAC disconnect
I always thought disconnect needed at the air handler/furnace regardless of location. I was told by an HVAC contractor that disconnect is only necessary for furnaces located in the attic. He stated there is no need for a disconnect switch for a air handler located in utility room. Is he correct?

Thanks in advance.

Last edited by M Kelekci : 07-06-2007 at 02:49 PM.
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Old 07-06-2007, 02:59 PM
John Arnold John Arnold is online now
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Re: HVAC disconnect
Matt - Take a look at
http://www2.iccsafe.org/states/seatt...apter%2040.pdf for IRC code on disconnecting means.
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Old 07-06-2007, 05:39 PM
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Phillip Stojanik Phillip Stojanik is offline
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Re: HVAC disconnect
Matt,

He is wrong.

An in-sight service disconnect is needed for an air handler/heating unit installed in a utility room. There is however an exception that might apply if a remotely located disconnect can be locked in the 'off' position.

The HVAC guy should know better than that but you really should direct your question to an electrician and not the HVAC guy. The electrician is the contractor who is ultimately responsible to see to it that an acceptable disconnect is present.
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Old 07-06-2007, 08:24 PM
M Kelekci
 
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Re: HVAC disconnect
Thanks John and Philip. That is what I had thought.

Another question. Are the built in circuit breakers (50-60 amps) we see in air handler units acceptable means of disconnect?
Or does it have to be a switch?
Do we have to be able to see the disconnet?
Do you all open the cover to see if there is a breaker in the unit?

Thanks again.

Last edited by M Kelekci : 07-06-2007 at 08:36 PM.
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Old 07-06-2007, 09:04 PM
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Jerry Peck Jerry Peck is online now
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Re: HVAC disconnect
The disconnect is required to be installed at or in the air handler - regardless of where it is located.

Now, if there is a panel 'at the air handler location' the disconnect could be the breaker. But only if the panel was 'at the air handler location', otherwise, no breaker lock outs allowed.
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