Daikin VRV II Series, Design, Installation & Testing Instructions, Page: 107 / 242

Si39-303 Test Operation
General Information 101
4.4.2.6 Setting of Vacuuming Mode
In order to perform vacuuming operation at site, fully open the expansion valves of indoor and
outdoor units to turn on some solenoid valves.
[Operating procedure]
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With Setting Mode 2 while the unit stops, set (B) 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 "In Centralized control", thus prohibiting operation.)
After setting, do not cancel “Setting Mode 2” until completion of Vacuuming operation.
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Use the vacuum pump to perform vacuuming operation.
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Press Mode button “BS1” once and reset “Setting Mode 2”.
4.4.2.7 Check Operation
To prevent any trouble in the period of installation at site, the system is provided with a test
operation mode enabling check for incorrect wiring, stop valve left in closed, coming out (or
misplacing with suction pipe thermistor) of discharge pipe thermistor and judgment of piping
length, refrigerant overcharging, and learning for the minimum opening degree of motorized valve.
CHECK OPERATION FUNCTION
Unit stopping
Press the TEST button for 5 seconds.
10 sec to 10 minutes
LED display (H1P~H7P) ( 8
:
ON 9
:
BLINKING 3
:
OFF)
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Pressure equalizing
Step 1
20 sec to 2 minutes
10 minutes
3 minutes
5 minutes
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Cooling start control Step 2
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Stability waiting operation Step 3
Pump down residual operation Step 7
5 minutes
Standby for restarting
Completion
Step 8
•
Stop valve close check
•
Wrong wiring check
•
Refrigerant over change check
•
Piping length check
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Judgement function
Step4~6