Daikin VRV II Series - Page 134

Appendix Si39-303
128 General Information
REFNET Joint and
Header Installation
1. REFNET joint
(Gas line and liquid line branch pipe)
!
If the selected building pipe differs form the branch pipe in size, cut the connection with a pipe cutter as
shown below.
!
Install the branch pipe either vertically or horizontally.
!
Insulate the branch pipe as described in the kit installation manual.
2. REFNET header
!
If the selected field pipe differs from the branch pipe in size, cut the connection with a pipe cutter as
shown below.
!
Fit a stop end on all open branch pipe connections not in use.
!
Install the branch pipe horizontally.
!
Insulate the branch pipe as described in the kit installation manual.
Note:
!
Install the REFNET joint horizontally or vertically, keeping it within a 30 angle when installed
horizontally.
!
Install the REFNET header so that it branches horizontally.
!
Do not used a T-joint for the branch pipe.