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Old 09-21-2019, 11:26 AM
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funola funola is offline
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Join Date: May 2005
Location: NYC
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Quote:
Originally Posted by vstech View Post
If anybody wants to install their own minisplit, I can help with knowledge and I could rent tools for the job.
It can be done with basic tools, but having the torque wrenches, allen key and flare tools are best.
Nitrogen, vacuum pump etc...

Not to mention the 5/16 hose adapter...

The key to a long life install is perfect flares properly torqued, and leak free, triple evacuation purged, pulled down to 250microns...
What tools do you have for rent? I am seriously thinking of installing this Fujitsu 33 SEER unit with XLTH myself https://www.fujitsugeneral.com/us/resources/pdf/support/downloads/submittal-sheets/9RLS3Y-RLS3H.pdf because some of the hvac contractors I've met with do not give me a warm fuzzy feeling if they actually do the install with proper equipment or procedures. Some of these contractors sub the jobs out and won't let me speak to their subs to find out what equipment or procedures they use.

Example: one contractor says most of the leaks in their experience through the years of mini split installs is in the evaporator, so they braze the connection at the evaporator instead of using a flare. When asked if they purge the lines with Nitrogen while brazing (to prevent oxidation), their answer was no!


I asked another contractor if they pressure test with Nitrogen and the answer was no! They just do a vacuum, if no leaks, they let the refrigerant out! Not going to name names but this was a Fujitsu Elite contractor.
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