Sanyo SGP-EGW190M Technical Data Manual page 27

System Design
Anticipating additional outdoor units
1) Ball valve installation position: Install on main piping after branching.
2) Installation guideline: Slope main pipes after branches so as to prevent oil buildup.
Caution
When installing outdoor piping (including that for future indoor expansion), be sure to position the valve
service port to face in the direction of the outdoor unit (see dashed lines in the example above), and at
least 50 cm from the outdoor unit.
Locate ball valves as close as possible to (within 40 cm) of their branch points.
If the pipe diameter at the ball valve is smaller than that of the main pipe after
branching, install reducers only at the ball valve connections.
D-6
2. Refrigerant piping design