Check The Drainage - Panasonic S-22MU1E5A Technical Data Manual

3. How to install the indoor unit

3-5-8. Check the Drainage

Open front panel and remove air filters.
(Drainage checking can be carried out without removing the front grille.)
Pour a glass of water into the drain tray-styrofoam.
Ensure that water flows out from drain hose of the indoor unit.
Drain tray-styrofoam
2-43
Design of VRF SYSTEM
Fig. 2-105
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