Panasonic CS-BE35TKE-1 Service Manual page 26

11.2.2 To Drill a Hole in the Wall and Install a Sleeve of Piping
1 Insert the piping sleeve to the hole.
2 Fix the bushing to the sleeve.
3 Cut the sleeve until it extrudes about 15 mm
from the wall.
When the wall is hollow, please be sure to use the
sleeve for tube assembly to prevent dangers
caused by mice biting the connection cable.
4 Finish by sealing the sleeve with putty or
caulking compound at the final stage.
CAUTION
Indoor
Sleeve for
tube assembly
ø70 mm
through hole
26
Wall
Outdoor
15 mm
Approx. 5 - 7 mm
Bushing for tube assembly
Putty or caulking compound