Bleed the air and humidity from your refrigerant circuit. Get rid of the caps from your 2-way and 3-way valves and in the support port and connect a vacuum pump hose towards the service port. For versatility of placement together with other reasons, some producers like Carrier supply models that https://zaneutrpm.thekatyblog.com/26140999/an-unbiased-view-of-air-conditioning-installation