Panasonic S-22MU1E5A Technical Data Manual page 44

3. How to install the indoor unit
CAUTION
The indoor unit should be slightly tilted downward toward the drain pipe connection side as shown in figure below
so that the wastewater can flow smoothly without being trapped in the middle. (Fig. 2-80)
Diagonally right down (front view)
(Ex.: Diagonal-right-backwards)
1
2
3
4
5
6
7
8
9
Ceiling
Approx. 1°
Diagonally backward (side view)
2-36
Design of VRF SYSTEM
Ceiling
Approx. 2°
Fig. 2-80