Panasonic 26PEK2U6 26PEK2U6 Service Manual - Page 159

6-38. Installing the Drain Pipe 1. Before Performing the Installation Drain Piping (1) Limitations of Raising the Drain Pipe Connection CAUTION The drain pipe can be raised to a maximum height of 2.79 ft. (850 mm) from the bottom surface of the ceiling. Do not attempt to raise it higher than 2.79 ft. (850 mm). Doing so will result in water leakage. (Fig. 1-124) 1. Specifications 1 ft. (300 mm) or less (as short as possible) A B Indoor unit Ceiling surface A : 2.79 ft. (850 mm) or lower B : 2.2 ft. (670 mm) or lower * Length of supplied drain pipe = 9-27/32" (250 mm) Fig. 1-124 (2) Limitations of Drain Pipe Connection Air bleeder prohibited CAUTION Upward gradient prohibited Do not install the drain pipe with an upward gradient from the drain port connection. This will cause the drain water to flow backward and leak when the unit is not operating. (Fig. 1-125) Trap prohibited Indoor unit Fig. 1-125 Do not install an air bleeder as this may cause water to spray 1 from the drain pipe outlet. (Fig. 1-125) Separation of support bracket = 4.92 ft. (1.5 m) ~ 6.56 ft. (2 m) Do not provide U-trap or bell-shaped trap in the middle of the drain pipe. Doing so will cause abnormal sound. (Fig. 1-125) Make sure the drain pipe has a downward gradient (1/100 or more; downward from drain port connection). (Fig. 1-126) Indoor unit Downward gradient = 1/100 or more (3) Limitations of Drain Hose Connection CAUTION Fig. 1-126 Do not bend the supplied drain hose 90° or more. Bend it less than 45°. (Fig. 1-127) Do not make a trap in the middle of the supplied drain hose. Doing so will cause abnormal sound. (Fig. 1-128) Bend angle 90° prohibited Bend angle less than 45° Fig. 1-127 Trap prohibited Fig. 1-128 1-151