[QUOTE=TxToaster;708359]We are looking at the possibility of adding a 2nd AC unit. Has anyone had any success adding a unit in place of the rear roof vent fan? I have read through several threads on this topic, but my searches couldn't find one specifically related to abandoning the vent fan and using the pre-existing hole in through the roof.
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Is reinforcement required in this area - such as the L-channel aluminum frame technique described on other threads?
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Absolute metal framing must be installed as well as properly.
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Any success in using one of the vent fan's wire as a pull line to get the appropriate wiring up to the ceiling?
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That's impossible to do since the wiring in the ceiling is in a cable.
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While the condensation can drain off the roof, I would much rather fish, or pull a condensation tube through the wall if that is possible - then tie it to the sub roof drain pan like is done in the front of the trailer. Anyone have any success with this approach?
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A drain line can be fished into the rooflocker, then into a closet, and then thru the floor and underbelly. Or use a Carrier AC and you do not need a drain tube.
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Did you install a separate breaker box, or just run a separate heavy duty 110 cord from a junction box which ties in to the AC power feed?
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Simply add another 30 amp cable and breaker box, for the second AC. Saves time, and money. You can fish the wire thru the shell enough to get into a rooflocker. from there, thru a closet, where you can mount the breaker box.Typical campgrounds have two 30 amp outlets.
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Hope these questions make sense.
Thanks, in advance.
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Hope these answers help your decisions.
Andy