Daikin RDXYQ5T8V1B Installer And User Manual page 74

16 | Piping installation
Installer and user reference guide
74
2 Connect the vacuuming/recovery unit through a manifold to the service port
of all stop valves.
You have to recover gas and oil from all 4 pinched pipes. Depending on your
available tools, use method 1 (manifold with refrigerant line splitters required) or
method 2.
Manifold
A
p < p >
B
e
a, b, c, d Service ports of stop valves
e Vacuuming/recovery unit
A, B, C Valves A, B and C
D Refrigerant line splitter
3 Recover gas and oil from the pinched piping by using a recovery unit.
CAUTION
Do NOT vent gases into the atmosphere.
4 When all gas and oil is recovered from the pinched piping, disconnect the
charge hose and close the service ports.
5 Cut off the lower part of the gas and liquid stop valve pipes along the black
line. Use an appropriate tool (e.g. a pipe cutter).
Connections
Method 1:
Connect to all service
ports at once.
C
a
A D
b
C
C
c
B D
d
C
Method 2:
First connect to the first 2
service ports.
C
A a
B b
C
Then connect to the last 2
service ports.
C
A c
B d
C
Compressor unit
5 HP
b
a
c
d
RDXYQ
8 HP
b
a
c
d
RDXYQ
RKXYQ5T8+8T7Y1B + RDXYQ5T8+8T7V1B
VRV IV heat pump for indoor installation
4P499898-1B – 2021.12