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Old 12-04-2013, 07:55 AM   #15
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Country Coach Owners Club
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Quote:
Originally Posted by jcwhitty View Post
Hi smlranger.....you stated earlier that you can hear the motors surge, and I would agree. What do you think is the cause of the surge? Seems to me that they should run smooth unless the power being fed to them is changing.

John
Not sure, maybe just the quality of the motors. When I got a brand new fan motor from Heater Craft, I connected it to a good 12V power source on my work bench (one of those 12VDC converters from Radio Shack). Even the new motor surged and was noisy. When I attached the squirrel cage to the motor shaft, the motor noise increased. As previously noted, there was a lot of back and forth play in the motor shaft. I sent the motor back to Heater Craft for a refund.

We spent a long weekend in pretty cold weather over TG holiday in the coach. The three exchangers with the Aqua Hot cozy fans were nearly silent. You could hear them running if all was quiet in the coach (no TV, etc.). However, at night we did not hear the fans at all when sleeping and the coach was heated nicely. I am really happy with the upgrade.
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Old 12-04-2013, 04:44 PM   #16
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Gary,
Congrats on getting your noisy fans replaced, but I have a question. When I look at your pictures from Oct 24, where you show the new fans connected to the new Heat Exchanger (I guess) and I look at Roger's Burke's web site for the Cozy, Plenum Kit - SME-102-000 Plenum kit for Cozy III heat exchangers, They do not look the same. His has 4 large holes and you said you drilled 2 additional holes in yours for better flow. Am I looking at the wrong Heat exchangers? or am I missing something else. Thanks
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Old 12-04-2013, 06:43 PM   #17
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Gary,
Congrats on getting your noisy fans replaced, but I have a question. When I look at your pictures from Oct 24, where you show the new fans connected to the new Heat Exchanger (I guess) and I look at Roger's Burke's web site for the Cozy, Plenum Kit - SME-102-000 Plenum kit for Cozy III heat exchangers, They do not look the same. His has 4 large holes and you said you drilled 2 additional holes in yours for better flow. Am I looking at the wrong Heat exchangers? or am I missing something else. Thanks
Dave, my pics are of the Heater Craft exchangers that CC put in the coach. I just removed the Heater Craft fan assembly and installed the Aqua Hot Cozy fans that I ordered from Roger. I installed the Cozy fans in two of my exchangers. I also ordered one of the complete Aqua Hot Cozy exchangers from Roger and used that to replace the exchanger under the galley. So, I now have a spare Heater Craft exchanger if I need one and would just put two of the Aqua Hot fans in it. If I had to do it again, I would have just bought the Aqua Hot fans since the Heater Craft exchanger box is sturdy and just needed more quiet fans.
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