Commercial Air Conditioning 
 
SERVICE MANUAL 
 
 
 
 
 
 
 
Model 
HBU-18CF03 
HDU-42CF03/H 
HPU-42HF03 
 
 Features 
 
 Long distribution pipe and high drop 
 Auto-check function 
 Flexible and easy installation 
 Fresh air hole, more natural, more healthy 
 Infrared remote controller & wired controller 
● Optional safety devices and much more precision control device 
 
 
 
Manual code: SYJS-019-05REV.0                     
 Edition: 2005-12-01