Panasonic 2WAY MULTI U-16GE3E5 Test Run Manual page 11

[Anticipating additional indoor units]
1) Ball valve installation position: Install on main tubing after branching.
2) Installation guidelines
* Slope main tubes after branches to prevent oil buildup.
* Locate ball valves as close as possible to within 40 cm of their branch points. If the tube diameter at the ball
valve is smaller than that of the main tube after branching, install reducers only at the ball valve connections.
* Locate the equipment where it will be easy to operate and inspect in the future.
Caution
* When installing indoor tubing (including that for future indoor expansion) along a main tube after a branch,
be sure to position service ports to face in the direction of their units (see dashed lines in the example above).
* Install a service port between the branch and solenoid valve kit, and with additional solenoid valve kits when
expanding indoor units.
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