DC Inverter Multi VRF System User Manual
13
90
o
Torque
wrench
Common
wrench
Pipe dimension Tightening torque
Fig.14 Fig.15
4.4.5 Outdoor Pipe Connection
Twist the flared nut on the connection pipe of outdoor valves. Twisting method is the same as for
indoor pipe connection.
Below is the piping diagram of
CHV-5S120NK
,
CHV-5S140NK
and
CHV-5S160NK
.
According to customer requirement or space limit, outlet pipe can be installed from the front, right or
rear side.
Gas pipe
Liquid pipe
Flared nut
Fig.16
4.4.6 Installation of Y-type Branch
1) Y-type Branch
Outdoor
Field supplied
Field supplied
to other branches or IDUs
type branch
Inlet
Outlet 1
Outlet 2
Fig.17
2) Y-type branch has several pipe sections with different dimension, which facilitates to match
with various copper pipes. Use pipe cutter to cut in the middle of the pipe section that is of
proper dimension and remove burrs as well. See Fig.18.
3) Y-type branch must be installed vertically or horizontally.
4) Branch shall be isolated by insulating material that can bear 120° or even higher temperature.
The attached foam of branch cannot be taken as insulating material.
