I am about to cannibalize an old chiller and make it into a mini-split system (my brother is A/C tech and EPA licensed). My plan is to put the heat exchanger in my cabinet at the very top, extend the copper tubing through the exterior wall into my soffit and then remount the compressor and condenser on the exterior. The copper tubing will be extended about 2-ft and we will upsize the line to keep the line pressure about the same. I will fabricate a new exterior grade case and it will be mounted under my eave from protection from direct elements.
My problem is the electronic controller is shot. I will use the Apex to control the unit. An EB4 will be included in the exterior housing and controlled by tank temperature...thats the easy part. The hard part is I want to monitor the temperature inside the heat exchanger to detect chiller failure and/or chiller freezing..so a high/low temp cutoff. The box appears to be constructed of some kind of plastic. My thinking is remove the old/small temp probe and drill the hole big enough to insert an Apex temp probe. I will then need some kind of way to seal the hole with a grommet or uni-seal like gasket.
Also, the unit does have an internal mechanical shut off and that will be preserved. As best as I can tell, that is independent of the electronic controller.
Any ideas on the Apex Temp Probe penetration?
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