Popgadget
Elite Member
(One of them is 5/16 inch) to isolate the micron gauge from oil contamination when opening for the condenser to flow in the refrigerant The analog gauge set is not strictly req. …….
I am wondering about bending the line set down as it exits the wall. Being close to the wall may not be practical to use the bending tools and may have to form it by hand carefully to avoid kinks.
For 12k btu it likely has small OD lines, hopefully 1/4 and 3/8, both are pretty easily bent by hand. But it could be a good excuse to buy the Yellow Jacket bender with the outside adapter as well. Alloy Ratchet Tube Bender Kit - Yellow Jacket HVAC Supplies and Products
Are you using Slim Duct to bring it down the wall?
If you have the fittings and hoses, you can use your manifold to isolate the micron gauge.