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Roof Top A/C question
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147 Posts
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February 11, 2011 - 6:38 pm
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I have an opportunity to get an A/C unit at a real good price.  My friend is going to scrap an old park model camper.  He said he would sell me the 2 yr old A/C unit cheap.

I was wondering if I need extra support brackets.  I called the Viking dealer and they thought no but, they were not overly confident in their answer.

My pup is a 2000 Viking 1906 st.  It has an A/C junction box under the dinette seat.

I would love to put it on but, I don't want to damage my roof.  Do you guys know of any way to find out for sure?

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91 Posts
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February 11, 2011 - 7:20 pm
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Coachmen (Viking relative) told me in any PU '96 or later was A/C ready.
The are receptive to inquiries
http://www.vikingrv.com/contact/

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174 Posts
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February 12, 2011 - 12:21 pm
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I have an 05 Coachman with AC.
There are two metal supports mounted internally to support the weight of the unit.
You might want to run a magnet across the ceiling and see if you can locate the 2 supports.
If they exist the AC will mount between them.

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175 Posts
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February 12, 2011 - 2:42 pm
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On both of my Starcrafts the roof AV supports are visible and on the inside roof ceiling with the roof vent right in between. I would be surpised if Coachmen/Viking were not the same way.

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147 Posts
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February 12, 2011 - 5:46 pm
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Thanks guys,  mine does not have any visible bars.  I will do the magnet test when I'm able to get it out of the barn where it's hibernating for the winter.  I will also email Viking direct.  When I called the dealer the guys that were on the phone had to look up to see even if they were a viking dealer.

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147 Posts
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February 14, 2011 - 12:20 pm
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I just got off the phone with Viking.  They told me that it has the support brackets already installed. rabird is correct with the dates.  Thanks for all the input and advice.  I can't wait to get it installed.

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Eastern Pennsylvania
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February 14, 2011 - 2:47 pm
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I have three suggestions from many posts read over the years related to cutting your roof to install A/C.

1. When cutting holes in your roof, round off the corners and don't square cut them.  This will give you less stress at that point and a better seal.

2. The standard roof A/C is 14" x 14" (same as a standard roof vent/fan) but you don't need to cut the whole 14" x 14" area out.  You can just cut out the area for the duct work only.  I have a copy of a template... just need to find it.

3. Measure twice, cut once.  ;D

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147 Posts
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February 23, 2011 - 2:53 pm
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Got the A/C.  It's a Coleman.  All need is the roof seal and a fabric duct.  The local RV dealer has the parts.

It's a 14x14 and the roof vent is already that size.  I hope the weather changes soon so I can get the camper out of the garage it's stored in and get it mounted.

Thanks for all the tips and and the offer of template.

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253 Posts
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February 23, 2011 - 10:37 pm
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Don't put it where the fan is/was.  Try to find the AC supports in the roof.

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147 Posts
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February 23, 2011 - 10:52 pm
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When I talked to Viking tech support she told me the supports were in place. Just remove the fan and mount he a/c.  the current fan is in the very middle of the roof.  I will call and  double check, the last thing I want is the roof collapsing. Thanks for the FYI.

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147 Posts
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February 24, 2011 - 1:45 pm
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Just Verified with Viking.  The roof supports are in place to just remove the fan and install the a/c.

Thanks everyone

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147 Posts
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March 8, 2011 - 9:15 pm
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After all that, I started on the removal of the factory vent fan. 1/2 hour later I scheduled it to be installed by the local RV dealer.  He's only charging me $150 labor and parts (seal and wire).  I took the pup over to him today.

That sealant that they used for the fan was some tough stuff.  I really didn't want to mess up the paint trying to get it off.  I don't think that would have leaked for 100 yrs.

He told me my a/c was about 15 yrs old.  Since it was free it was worth putting in.  He also said if this didn't work right he sell me a new one :doh:

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8 Posts
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July 14, 2011 - 6:45 pm
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anyone know if a 92 starcraft has the roof supports? no center roof vent on mine

i have a 12 yr old coleman ac from my old class c motorhome that i scrapped

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