Doesn’t matter which way the heater hoses are connected. It will work either way.
When charging, I charge till the low side on the compressor sweats. It helps to hose down the radiator to lower pressures and I put the Freon can in a bucket of hot water to raise th3 pressure in the can to get it all out.
On this setup the hoses do matter how they are hook up. If backwards like I had it at around 2500rpms the AC blows hot air because the valve is forced open when the return is hooked up the feed side. At least they had in the tech support section.
