The Pioneer charging service gauge hose set 5/16″ port is an important tool for Installing a Mini Split System Ductless Air Conditioner with 5/16 SAE Service Port Connections.
Low Side (Suction Line) Pressure Gauge and Hose Set. Specially made for newer R410a Mini Split Systems. Fits on 5/16″ Service Ports.
- Blue Hose connects to 5/16″ SAE service port on most newer R410a Mini Split Systems
- Yellow hose connects to 1/4″ port on most vacuum pumps and refrigerant tanks.
- Use for attaching vacuum pump to evacuate the line sets and indoor units before releasing the refrigerant.
- Use for charging additional refrigerant into the system.
- Use for checking the low side operational pressures in COOLING mode.
- DO NOT CONNECT TO THE SERVICE PORT WHILE THE SYSTEM IS RUNNING IN HEAT MODE.