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Old 03-03-2018, 08:21 AM   #1
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Replacing 6537 heat pump

Hi,

I am looking for info on replacing an old 6537 Heat pump with a new 46515 unit.
Since the 6537 Heat pump is a top return air, I am specifically interested in the required duct work to convert from top to side return air.
Anybody out there who has done this??
Any info on required duct size/cross section, etc would be much appreciated.

Nalle
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Old 03-03-2018, 09:24 AM   #2
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Any good heating duct worker should be able to make up what you need, but unfortunately they are a dying breed!
Happy Glamping.
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Old 03-04-2018, 08:08 AM   #3
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Nalle, you unit is not top air return. Here is link to some reviews that say it is plug
and play http://www.rvproductsshop.com/2ton-b...515-811.htmlnd

Also here is the exploded parts view of your unit.
Attached Thumbnails
Click image for larger version

Name:	34H cold air return.jpg
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Old 03-04-2018, 08:47 AM   #4
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Nalle, I just ask your question a wk. or so ago.
I got some great help from several members.
One being AFChap::::In 2016, mine had had a number of problems and was having some serious symptoms again. I decided to replace it. I emailed RVComfort and found the replacement unit for my original 6535A871 is 46515-811. The local dealership said the cost would be $2,999 plus labor . From previous experiences I had zero confidence in their ability to install it.

I ordered from DyersRVOnline, $2,280.00 full price, free shipping. Ordered 26 May, arrived 2 June.

I will check on the unit from DyersRVOnline when I return home.

Hope this helps....coopcolt
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Old 03-05-2018, 06:32 AM   #5
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Unfortunately the RVP 6537 is top air return. The 6535 is side air and can be directly replaced with the 46515.
The 6537 is also about 7" taller and it may seem like an easy job to do some duct work and take the side return and feed to the top.
However, that is not the case. With framing and cabling, etc., it is pretty crowded down there.
There does not seem to be any replacement for the 6537..
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Old 03-05-2018, 06:36 AM   #6
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Thanks for your input. Unfortunately the 6537 is a top air return. The 6535 is side air.
I have not been able to find any suitable replacement.
Nalle
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Old 03-05-2018, 07:03 PM   #7
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Nalle , my bad, I did not look far enough to see the 6537 was used on some of the 2004 34H's depending on which chassis was used.
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Old 03-05-2018, 11:56 PM   #8
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Quote:
Originally Posted by grtharris View Post
Nalle, you unit is not top air return. Here is link to some reviews that say it is plug
and play http://www.rvproductsshop.com/2ton-b...515-811.htmlnd

Also here is the exploded parts view of your unit.
Corrected link: 2 Two TON Plus Basement Air Conditioner W/HP 24,000 BTU 46515-811
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Old 03-06-2018, 09:25 AM   #9
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Here are the installation instructions for the 46515 Series and they include sizing info for the input duct: two-ton-he-install-instructions 46515 Series
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Old 03-06-2018, 04:44 PM   #10
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Quote:
Originally Posted by cbeierl View Post
Here are the installation instructions for the 46515 Series and they include sizing info for the input duct: two-ton-he-install-instructions 46515 Series
Chris

I get this error with the Instruction link

Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.
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Old 03-06-2018, 04:53 PM   #11
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Anyone know if the 46515 will replace the 6535 as well?
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Old 03-06-2018, 05:23 PM   #12
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Quote:
Originally Posted by rgvtexan View Post
Chris

I get this error with the Instruction link

Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.
I just hit a link and that's it.
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Old 03-06-2018, 06:58 PM   #13
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Quote:
Originally Posted by rgvtexan View Post
Chris

I get this error with the Instruction link

Your submission could not be processed because a security token was invalid.

If this occurred unexpectedly, please inform the administrator and describe the action you performed before you received this error.
Sorry, this should work: two-ton-he-install-instructions 46515 Series

The original link was supposed to bypass the need to select 'Download'--it worked when I posted it (for me, at any rate) but doesn't any more.
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Old 03-06-2018, 07:00 PM   #14
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Quote:
Originally Posted by 819 View Post
Anyone know if the 46515 will replace the 6535 as well?
Yes, it should be a direct replacement for the 6535 (but not the 6537).
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