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Old 07-02-2010, 07:19 PM   #1
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Is my coil drain pan rated for oil furnace?


I have a thermopride oil furnace with an A-coil for AC. The outdoor condenser was replaced 5 years ago. I never replaced the indoor coil until now due to a leak. I got an uncased a-coil online and had a local contractor put it in for me. I got the size and to match the condenser and measurement to fit into the plenum. However, I overlooked the higher temperature from Oil Furnace might melt the drain pan. The coil I got is ADP HE33436A155A004 uncased A-coil. From their website regarding to the type of drain pan on their coil:

"UV resistant drain pans are molded of high temperature (450 deg. F) engineered polymer"

Is this good enough for my oil furnace? Or should I swap out a different drain pan with a higher temperature rating?

TIA!

Dave

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Old 07-03-2010, 08:08 AM   #2
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Is my coil drain pan rated for oil furnace?


Will be fine. Furnaces don't run that hot.

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Old 07-03-2010, 08:22 AM   #3
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Is my coil drain pan rated for oil furnace?


thanks, that makes me feel much better. Do you know the normal running temperature at plenum for gas and oil furnace?

TIA!

Dave
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Old 07-03-2010, 08:35 AM   #4
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Is my coil drain pan rated for oil furnace?


The supply air temp in the plenum is usually around 150 degF. Limit control set at 170-250 degF depending on model. Doubt if it could ever get that hot. I have seen them melted if the limit control was bypassed or failed. Do a temp rise test and speed up the fan if necessary. Run the furnace for 10 mins, stick a accurate cooking thermometer in the duct a foot downstream of the plenum and out of visual sight of the heat exchanger. Subtract the return duct temp from the supply. Look up the rating on the model # info sticker.
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