Right-Side Tubing; Left-Side Tubing; Switching Drain Hose And Drain Cap; Drain Hose - Panasonic S-22MU1E5A Technical Data Manual

3. How to install the indoor unit

Right-side tubing

(1) Shape the refrigerant tubing so that it can easily go into the wall hole. (Fig. 2-129)
(2) Push the wiring, refrigerant tubing, and drain hose through the hole in the wall. Adjust the indoor unit so it is securely seated
on the rear panel. (Fig. 2-130)
(3) Carefully bend the tubing (if necessary) to run along the wall in the direction of the outdoor unit and then tape as far as the
fittings. The drain hose should come straight down the wall to a point where water runoff won't stain the wall.
(4) Connect the refrigerant tubing to the outdoor unit. (After performing a leak test on the connecting part, insulate it with the
tubing insulation. (Fig. 2-131)).
(5) Assemble the refrigerant tubing, drain hose, and conduit (including inter-unit wiring) as shown in Fig. 2-132.
Rear panel
Cover
1
2 Fig. 2-129

Left-side tubing

(1) Lead the tubing and drain hose through the wall, allowing
sufficient length for connection. Then bend the tubing using
a tube bender to make the attachment. (Fig. 2-133)
3
(2) Switch the drain hose and drain cap.

Switching drain hose and drain cap

(a) Locate the drain hose and the drain cap. (Fig. 2-134)
(b) Remove the screw fastening the drain hose on the
right side, and pull out the drain hose to remove it.
4
(Fig. 2-134)
(c) Apply moderate force to pull off the drain cap on the
left side. (If you cannot pull it off by hand, use a long-
nose pliers.)
(d) Reattach the drain hose to the left side and the drain
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cap to the right side. (Fig. 2-135)

Drain hose

Slide the drain hose fully onto the drain pan outlet. (It will
be easy to slide when water is added.) Check that the
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screw holes in the drain bracket and the drain pan outlet
are aligned and securely in contact, then fasten them with
the screw. (After attaching the drain hose, check that it is
attached securely.) (Fig. 2-136)
Drain cap
7
Use a Phillips head screwdriver to push the drain cap in
firmly. (If it is difficult to push in, wet the cap with water
first.)
(3) Install the indoor unit on the rear panel.
(4) Connect the tubing and wiring led inside from outdoors.
8
(5) After completing a leak test, bundle the tubing together
with armoring tape and store it inside the tubing storage
area at the back of the indoor unit and hold it with clamps.
(Figs. 2-135 and 2-137)
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Refrigerant
tubing
Inter-unit
wiring
Drain hose
Fig. 2-130
Hole in wall
Bent part
Drain cap
Clamp
Drain hose
Fig. 2-134
Screw hole
Drain hose
Drain bracket Screw
Fig. 2-136
2-48
Design of VRF SYSTEM
Flare
insulation
Fig. 2-131
Refrigerant tubing
Drain hose
Conduit
Inter-unit wiring
Fig. 2-132
Rear panel
Narrow tube Wide tube
Fig. 2-133
Clamp
Drain cap
Drain pan outlet
Drain bracket
Drain hose
Screw
Refrigerant
tubing
Inter-unit wiring
Conduit
Drain hose
Fig. 2-135
Fig. 2-137