GMV5 Compact Series VRF Outdoor Unit 
9 
4.2 Piping Design 
4.2.1 The Branch of the Connection Pipe   
The connection pipe between indoor unit and outdoor unit uses “Y” type branch, as shown in Fig.5.   
 
 
Fig.5 Schematic diagram of piping connection   
4.2.2 Allowable Pipe Length and Drop Height among Indoor and Outdoor Units   
 
Fig.6 Allowable pipe length and drop height among indoor and outdoor units   
The equivalent distance of indoor units manifold is 0.5m. 
Height difference between outdoor and indoor unit: H 
Height difference among indoor units: 
h<=15m 
The first 
manifold 
of indoor 
units 
Length of farthest fitting pipe: L≤120m