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Author Topic: Installing Heat Exchanger in Upflow Plenum  (Read 16948 times)

yoderheating

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Re: Installing Heat Exchanger in Upflow Plenum
« Reply #15 on: September 13, 2011, 10:34:10 PM »
 Between the A coil and the fan, customer swore he didn't do anything but I almost guarantee you they had the cover off the furnace.  If so the blower wasn't pulling through either coil and it iced over. Anyway, I gave them a new coil and stressed keeping the cover on the furnace when in operation. So far have not had any more problems.
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Southwest Virginia
WF4000 Heat Master

Nomorepropane

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Re: Installing Heat Exchanger in Upflow Plenum
« Reply #16 on: September 21, 2011, 11:34:33 PM »
Gmviso is right. A properly set up and sized a/c  should have a differential of 18 to 23 degrees across the a/c coil. Possibilty of freezing your boiler xchanger is very low. I do know that you want to leave plenty of room between your a/c coil and your odb xchanger. If at all possible. I could only get a max distance on my unit of about 5" because of the length of plenium on top of my 13 seer a/c unit which is alot taller then the older 10 seer units, and limited ceiling height.
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Ridgewood Boiler
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gmviso

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Re: Installing Heat Exchanger in Upflow Plenum
« Reply #17 on: September 22, 2011, 06:40:03 AM »
What is the reason for wanting as much distance as possible between your A-coil and Heat excahnger?
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Central Boiler CL5036
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