Daikin VRV IV+ Installer And User Reference Manual page 58

6 | Installation
Installer and user reference guide
58
d Refrigerant R410A tank (siphon system)
e Vacuum pump
f Liquid line stop valve
g Gas line stop valve
A Valve A
B Valve B
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, liquid and equalising stop valve pipes along
the black line. Use an appropriate tool (e.g. a pipe cutter).
WARNING
Never remove the pinched piping by brazing.
Any gas or oil remaining inside the stop valve may blow off the pinched piping.
6 Wait until all oil has dripped out before continuing with the connection of the
field piping in case the recovery was not complete.
RYYQ+RYMQ+RXYQ8~20U7Y1B
VRV IV+ heat pump
4P546228-1A – 2019.10