Daikin VRV IV RKXYQ5T8Y1B Series, Инструкция для установки и пользователя

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17 | Piping installation
Installer and user reference guide
81
R R8T7V1B
VRV IV heat pump for indoor installation
4P499898-1A – 2020.10
17.2.6 To remove the pinched pipes
WARNING
Any gas or oil remaining inside the stop valve may blow off the pinched piping.
Failure to observe the instructions in procedure below properly may result in
property damage or personal injury, which may be serious depending on the
circumstances.
Use the following procedure to remove the pinched piping:
1 Make sure that the stop valves are fully closed.
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 Connections Compressor unit
p< p>
e
B
A
Method 1:
Connect to all service
ports at once.
C
a
b
A
c
d
B
C
C
C
D
D
RDXYQ
RDXYQ
c
c
d
d
b
b
a
a
5 HP
8 HP
Method 2:
First connect to the first 2
service ports.
C
C
b B
a A
Then connect to the last 2
service ports.
d B
c A
C
C
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).