York MKC 12S Technical Manual

Contents

8For details of indoor and outdoor unit wiring, see the diagramsupplied inside the units. Start the unit and check operation bothin cooling and heating mode.Installing the "diffuser-grille" assembly• Mounting- Remove the return air grill by springing the 4 mounting clipsand 2 hinges (fig. 1, ref. a).- Remove the air filter (fig. 2 & 3).- Put the grill in place under the cassette chassis (fig. 4).- Connect the panel heater wires.- Fit the casing and grille together using the screws (fig. 5, ref. b).- Put the filter (fig. 6) and the return air grille (fig. 6 & 7) back inplace.8 - Wiring diagram9 - Front panel installation1NE 21NE A 2Power supply220V/1Ph/50HzCooling only units - MKC1NE 21NE A 233Power supply220V/1Ph/50HzHeat pump units - MKHOutdoor unitIndoor unitOutdoor unitIndoor unitFig. 5Fig. 4Fig. 3Fig. 2Fig. 1bbbbaaaaWiring sizesUnit size 12 18 25Power supply mm2 3 x 2.5 3 x 4Interconnection Cool. mm2 3 x 2.5 + ground 3 x 1.5 + ground(Indoor/Outdoor) Heat. mm2 4 x 2.5 + ground 4 x 1.5 + groundFuse (Slow-blow) A 10 16 20