Daikin VRV IV+, Installer And User Reference Manual, Page: 37 / 168

5 | Preparation
Installer and user reference guide
37
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10
Maximum allowable length
▪ Between outdoor and indoor units (single/multi combinations)
Actual piping length 165 m /135 m
Example 1.1
▪ unit 8: a+b+c+d+e+f+g+p≤165 m
Example 1.2
▪ unit 6: a+b+h≤165 m
▪ unit 8: a+i+k≤165 m
Example 1.3
▪ unit 8: a+i≤165 m
Example 2.1
▪ unit 8: a+b+c+d+e+f+g+p≤135 m
Equivalent length 190 m /160 m
Total piping length 1000 m /500 m
Example 1.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤1000 m
Example 2.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤500 m
▪ Between outdoor branch and outdoor unit (only in case of a multi outdoor
installation)
Actual piping length 10 m
Example 3
▪ r, s, t≤10 m; u≤5 m
Equivalent length 13 m