hot box

Originally Posted By: jane molina
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Can someone tell me what this is . I believe it is a house with prfab chimney


and metal flue. is this the exhaust for the chimney?


[ Image: http://www.nachi.org/bbsystem/usrimages/more/hot%20box.jpg ]


Originally Posted By: igompertz
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It looks like a direct vent chimney. I wonder if the paint on it is rated for high temps?


Originally Posted By: phinsperger
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Yes, dierect vent. See them alot around here for gas fireplaces. What was on the interior side?



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Originally Posted By: jane molina
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The interior side had a prefabricated fireplace . There also was a


vent out the roof that is why I asked is there two A direct and a roof vent.


Originally Posted By: kmcmahon
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Roof vent is probably for the water heater.



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Originally Posted By: phinsperger
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Typically around here the type of vent you pictured would be for a closed combustion unit. Meaning air is brought in from outside, burned and then exhausted back to the outside. No air from inside the house is used. The vent would be designed to allow both the intake and exhaust to be in the same unit. This makes a nice clean and simple installation and you only have to have one hole in your wall instead of two. If this is a closed combustion vent as I suspect, the intake will come in though the grills on the side and the exhaust will be going out the grill on the top.



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Paul Hinsperger
Hinsperger Inspection Services
Chairman - NACHI Awards Committee
Place your Award Nominations
here !