Haier AB072XCEAA Service Manual - Page 46

Drill a hole of 120x70 mm dia. with a little slope towards outside 3. Piping connection Chff^j\bZe Abj Chg]blbhg^j Indoor side Outdoor side Wall hole 70mm Thickness of wall (Cross section of wall hole) (1)Schematic diagram for unit connection Flared pipe connection Indoor unit Indoor unit 3-way Valve Outdoor uint 2-way Valve (2) Connection pipe dimensions: Pipe Value Liquid 6.35mm Gas 12.7mm Gas 9.52mm Torque 18 N.m 50 N.m 40 N.m Apply and tighten the nut. (3)Cautions for pipe connection Pipes free from twists, deformation, water, dust. Dedicated tools for each R407C and R22 should be used and stored separately. Optimized radii of bends Insulation to be applied on all gaseous pipes Flared section free from cracks Spanner Spanner Joint Nut Threads on the pipes may be damaged when tightening if the pipes are not well aligned. (4) Pipe connection process Apply refrigeration oil on the end of the pipe to be connected and on the flared section. Align the pipes to be connected and tighten the nut. (See the figure) Ensure that no foreign articles enter into the pipes. Insulation material Piping connection of the indoor unit Drain hose 1. Arrangement of piping and drainage pipe After opening inlet grill,you will see a control box. Remove the cover before working. Copper tube Connecting electric cable for indoor and outdoor unit Cut away, with a hammer or a saw, the lid for piping according to piping direction. z 44 z