Panasonic WU-144MF1U9E ECOi/VRF Systems Indoor Unit Installation Manual - Page 49

■ Wall Mounted Type (K1 Type) 3-45. Removing the Rear Panel from the Unit (1) Remove the set screws used to fasten the rear panel to the indoor unit during transportation. (2) Press up on the frame at the 2 locations shown by the arrows in the figure at right, and remove the rear panel. Screws used during transportation NOTE Tubing can be extended in 4 directions as shown in Fig. 3-152. Select the direction which will provide the shortest run to the outdoor unit. Except S-18MK1U6, S-19MS1U6 Press Remove the rear panel Fig. 3-151 For S-18MK1U6, S-19MS1U6 Left tubing Left-rear tubing Right-rear tubing (recommended) Left tubing Right-rear Fig. 3-152-1 Right tubing Left-rear tubing Fig. 3-152-2 Right-rear tubing (recommended) 3-46. Selecting and Making a Hole (1) Remove the rear panel from the indoor unit and place it on the wall at the location selected. Fix the rear panel and hook the unit onto it temporarily. Make sure the unit is horizontal using a level gauge or tape measure to measure down from the ceiling. (2) Determine which notch of the rear panel should be used. (Fig. 3-153) (3) Before drilling a hole, check that there are no studs or pipes behind the determined location. The above precautions are also applicable if tubing goes through the wall in any other location. (4) Using a sabre saw, key hole saw or hole-cutting drill attachment, make a hole (dia. 3-5/32") in the wall. (Fig. 3-154) (5) Measure the thickness of the wall from the inside edge to the outside edge and cut the PVC pipe at a slight angle 15/64" shorter than the thickness of the wall. (Fig. 3-155) (6) Place the plastic cover over the end of the pipe (for indoor side only) and insert in the wall. (Fig. 3-156) For S-07MK1U6, S-09MK1U6, S-12MK1U6 Center of left rear tubing hole Center of right rear tubing hole For S-18MK1U6, S-19MS1U6, S-24MK1U6 Center of left rear tubing hole Center of right rear tubing hole Tubing hole diameter ø3-5/32 Fig. 3-153 Indoor side Outdoor side NOTE The hole should be made at a slight downward gradient to the outside. Avoid areas where electrical CAUTION wiring or conduits are located. PVC pipe (field supply) Fig. 3-154 ←INSIDE Wall Plastic cover OUTSIDE→ PVC pipe Slight angle Cut at slight angle Fig. 3-155 49 Fig. 3-156 73'@*OEPPS@64JOEC