Daikin RQYQ22PY1 [88/194] Setting of refrigerant recovery mode

Daikin RQYQ10PY1 [88/194] Setting of refrigerant recovery mode
Field Setting from Outdoor Unit Si341009
79 Test Operation
2.1.7 Air Tight Test Procedure
After internal servicing is performed onsite, perform the air tight test. Fully open the electronic
expansion valves of the outdoor unit and indoor unit, and turn on some of the solenoid valves.
[Operation procedure]
c
With the system stopped, use "Setting mode 2" and set (A) Refrigerant recovery / vacuuming
mode (setting item No. 21) to "ON".
All of the indoor unit and outdoor unit electronic expansion valves fully open and some of the
solenoid valves turn on. (H2P blinks to indicate the test operation, and the remote controller
displays "TEST OPERATION" and "UNDER CENTRALIZED CONTROL", thus prohibiting
operation.)
d
Close the stop valves on the gas side and liquid side, and perform an air tight test at 4.0
MPa.
e
Press the MODE button (BS1) to cancel "Setting mode 2".
<Caution>
Do not turn off the outdoor unit power during the air tight test.
(The solenoid valves will close and the outdoor unit air tight test will not be possible.)
2.1.8 Setting of Refrigerant Recovery Mode
When carrying out the refrigerant recovery onsite, fully open the respective expansion valve of
indoor and outdoor units.
All indoor and outdoor unit’s operation are prohibited.
[Operation procedure]
c
In setting mode 2 with units in stop mode, set “Refrigerant recovery / Vacuuming mode” to
ON. The respective expansion valve of indoor and outdoor units are fully opened and some
of solenoid valves open. (H2P turns to display “TEST OPERATION” (blinks), “TEST
OPERATION” and UNDER CENTRALIZED CONTROL” are displayed on the remote
controller, and the all indoor / outdoor unit operation is prohibited.
After setting, do not cancel “Setting Mode 2” until completion of refrigerant recovery
operation.
d
Collect the refrigerant using a refrigerant recovery unit. (See the installation manual attached
to the refrigerant recovery unit for more detail.)
e
Press Mode button “BS1” once and reset “Setting Mode 2”.
2.1.9 Setting of Vacuuming Mode
In order to perform vacuuming operation onsite, fully open the expansion valves of indoor and
outdoor units and turn on some solenoid valves.
[Operating procedure]
c
With Setting Mode 2 while the unit stops, set “Refrigerant recovery / Vacuuming mode” to
ON. The expansion valves of indoor and outdoor units fully open and some of solenoid
valves open.
(H2P blinks to indicate the test operation, and the remote controller displays "TEST
OPERATION" and "UNDER CENTRALIZED CONTROL", thus prohibiting operation.)
After setting, do not cancel “Setting Mode 2” until completion of vacuuming operation.
d
Use the vacuum pump to perform vacuuming operation.
e
Press Mode button “BS1” once and reset “Setting Mode 2”.

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