Panasonic WU-144MF1U9E ECOi/VRF Systems Indoor Unit Installation Manual - Page 45

(4) Wall and ceiling side opening position Figure shows view from front Figure shows view from top 5-45/64 * 3-35/64 6-7/64 Ceiling Wall 3-35/64 ø3-15/16 wall side opening ø3-15/16 wall side opening 5-5/16 (for left-side drain hose) ø3-15/16 ceiling opening ø3-15/16 ceiling opening 4-59/64 * If the optional drain up kit is installed, create a ø3-15/16" hole along the dotted line (part marked with * in figure). Fig. 3-130 3-41. Suspending the Indoor Unit (1) Place the full-scale diagram (supplied) on the ceiling at the spot where you want to install the indoor unit. Use a pencil to mark the drill holes. (Fig. 3-131). NOTE Since the diagram is made of paper, it may shrink or stretch slightly because of high temperature or humidity. For this reason, before drilling the holes maintain the correct dimensions between the markings. (2) Drill holes at the 4 points indicated on the full-scale diagram. (3) Depending on the ceiling type: a) Insert suspension bolts as shown in Fig. 3-132. or b) Use existing ceiling supports or construct a suitable support as shown in Fig. 3-133. WARNING It is important that you use extreme care in supporting the indoor unit from the ceiling. Ensure that the ceiling is strong enough to support the weight of the unit. Before hanging the ceiling unit, test the strength of each attached suspension bolt. (4) Screw in the suspension bolts, allowing them to protrude from the ceiling as shown in Figs. 3-132 and 3-133. The distance of each exposed bolt must be of equal length within 1-15/16". (Fig. 3-134) Full-scale installation diagram Fig. 3-131 Hole-in-anchor Hole-in-plug Concrete Ceiling Wall Inser t Suspension bolt (M10 or 3/8") (field supply) Fig. 3-132 Ceiling tiles Ceiling support A A Pull out the air-intake grille pushing claws of the hinges Screw Latch Fig. 3-133 Hinge Slide unit Ceiling surface Fixture Fig. 3-134 Within 1-15/16" Air-intake grille Fig. 3-135 45 73'@*OEPPS@64JOEC