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Old 09-12-2015, 10:12 PM   #1
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How to remove gas heater exhaust vent


I am trying to remove a gas heater exhaust/intake vent cover on an exterior wall. The reason is small birds have completely filled both ports with twigs. Twigs have been removed from the exhaust port, but the intake port is difficult to reach. I have removed the four screws, but the cover will not come off, I think because the PVC exhaust pipe has been glued directly to the cover. My plan was to locate the exhaust pipe inside the house, then cut it so that the outside vent cover could be removed. I cut a hole in the ceiling and have located the pipe. Is this the best approach to take? Thanks in advance for your help.
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Old 09-12-2015, 10:23 PM   #2
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The cover should come off after removing the 4 screws.

Search for flush mount concentric kit and you'll find images of how it's assembled.

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Old 09-12-2015, 10:47 PM   #3
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Dan, I found the installation instructions for the Goodman flush mount concentric kit. It says to glue the pipe to the vent cap with RTV silicone (and not to use PVC solvent cement). So if it is silicone glue, how best to remove the cap? It is a strong bond.
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Old 09-12-2015, 10:59 PM   #4
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Link to Goodman instructions (PDF)

http://www.alpinehomeair.com/related...structions.pdf
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Old 09-12-2015, 11:04 PM   #5
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Note that there is no problem with the intake pipe. It is only the exhaust pipe that is glued to the cover.
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Old 09-12-2015, 11:29 PM   #6
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How to remove gas heater exhaust vent


RTV should pull apart with moderate force. It may have been glued which would be bad.

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