Toyotomi TGS-28FWCA Owner's Manual page 13

Install the cassette type indoor unit
2 Check the smoothness of drain after installation.
☆ Check the drain state by immitting 600cc water slowly from the outlet vent or test hole.
☆ Check the drain in the state of refrigerating after installation of the electric circuit.
[ Way of immiting ]
Drain vent for repair use (plastic
stopper is included) (drain the water
in waterspout by this outlet vent)
Above100mm
< Immiting water from the outlet
vent terminal >
Drain hose
Test hole
< Immiting water from the rest hole >
Plastic water pot (The length of the
pipe should be about 100mm.)
9
Test hole cover