The outside condenser unit has the charge. You install the units, hook
up your lines, pull a vacuum and make sure they are tight, then open up
the spigot to charge the system. He did a nitrogen purge then pulled
the vac again. On the larger unit I put in my guy did put in a bit more
refrigerant as my lines were maybe a bit longer than the charge was
designed for -- I had 4 head units and 2 were a bit of a run, and the
linesets come in specific lengths (making the flange at home is not
recommended but I guess you could try).
There's nothing magic about doing your own charging if you have a good
vacuum pump, but I was explicitly addressing the warranty aspect. For
the $100 or whatever it was, it was not a big deal.
--FT
On 7/19/18 1:12 PM, Mitch Haley via Mercedes wrote:
On July 19, 2018 at 1:06 PM Floyd Thursby via Mercedes <mercedes@okiebenz.com>
wrote:
You should get an AC guy to do the charging as that will validate the
warranty, but you can install yourself, getting the power to the unit is
the hardest part but if you have another unit there you should be good.
Yours didn't come pre-charged?
Were they multi room units or were the lines too long for the factory charge
weight?
Mitch.
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--
--FT
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