44 
12.2.2  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. 
 
 CAUTION 
  
   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. 
 
 
15 mm
Putty or caulking compound
ø70 mm through hole
Indoor
Outdoor
Sleeve for tube 
assembly
Approx. 5 - 7 mm
Bushing for tube 
assembly
Wall
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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