Daikin VRV W T-series - Connecting the Refrigerant Piping; Routing Refrigerant Piping; To Connect the Refrigerant Piping to the Outside Unit

5 Installation
Installation manual
20
RWEQ96~432TAYCU
VRV W T-Series water-cooled system air conditioner
4P540122-1B – 2018.11
NOTE
After all the piping has been connected, make sure there is
no gas leak. Use nitrogen to perform a gas leak detection.
5.3.2 Connecting the refrigerant piping
Before connecting the refrigerant piping, make sure the outside and
indoor units are mounted.
Connecting the refrigerant piping involves:
▪ Routingandconnectingtherefrigerantpipingtotheoutsideunit
▪ Protectingtheoutsideunitagainstcontamination
▪ Connecting the refrigerant piping to the indoor units (see the
installation manual of the indoor units)
▪ Connectingthemulti-connectionpipingkit
▪ Connectingtherefrigerantbranchingkit
▪ Keepinginmindtheguidelinesfor:
▪ Brazing
▪ Usingthestopvalves
▪ Removingthepinchedpipes
5.3.3 Routing refrigerant piping
RWEQ_T* series units offer flexibility of both front and top refrigerant
pipe connections.
The units ship from factory configured for refrigerant pipe
installation from top. Remove two screws of the pipe service
plate (a), and fit the plate with screws in other position as
shown in figure below.
a
Front connection:
Use the front connection accessory pipes to convert the installation
to where refrigerant piping is connected from the front.
a
5.3.4 To connect the refrigerant piping to the
outside unit
Suction gas
side is
totally shut.
Liquid
Suction
Gas
Liquid
Heat recovery system
Heat pump system
Connect
Do not cut the
stop valve pipe
Do not connect
Connect Connect
Suction
Gas
High
Pressure
/ Low
Pressure
Gas
High
Pressure
/ Low
Pressure
Gas
INFORMATION
All local inter unit piping are field supplied except the
accessory pipes.
NOTE
Precautions when connecting field piping. Add brazing
material as shown in the figure.
1
1
1
1
2 2
≤Ø1 inch (25.4 mm) >Ø1 inch (25.4 mm)
NOTE
▪ Be sure to use the supplied accessory pipes when
carrying out piping work in the field.
▪ Be sure that the field installed piping does not touch
other pipes, the bottom panel or side panel.
Connect the stop valves to the field piping using the accessory pipes
supplied with the unit.
The connections to the branch kits are the responsibility of the
installer (field piping).