Panasonic U-72MF1U9 Technical Data Manual page 62

7. Optional Parts
The distribution joint can be either horizontal or vertical.
In the case of horizontal, the L-shaped tubing must be slanted slightly upward (15° to 90° ).
Outdoor unit
Side
In case of horizontal position
When brazing, replace air inside the tube with nitrogen gas to prevent copper oxide from forming.
To insulate the distribution joint, use the supplied tubing insulation.
(If using insulation other than that supplied, make sure that its heat resistance is 248° F or higher.)
For additional details, refer to the installation instructions provided with the outdoor unit.
1
2
3
4
5
6
7
8
15 to 30°
upward slant
Indoor unit
Side
In case of vertical position
(directed upward or downward)
Direction of Distribution Joint
Outdoor
unit
2 - 48
Design of 3WAY VRF SYSTEM
Outdoor
unit
Direction of Indoor unit
Distribution Joint