Additional Refrigerant Charge Operation - Daikin VRV System R-22 PLUS Series Manual

Si33-102.book Page 81 Tuesday, June 26, 2001 3:18 PM
SiE33-102

4.10 Additional Refrigerant Charge Operation

[Work procedure]
1. Conduct ordinary refrigerant charge.
With the outdoor unit in non-operating condition, charge refrigerant from the liquid-side stop valve
service port.
(Keep the stop valves on both liquid and gas sides closed.)
Conduct the following operation only when the entire amount of refrigerant could not be
charged with the compressor in non-operating condition (otherwise equipment damage can
result).
2. Turn on the power switches of the indoor and outdoor units, and fully open the gas-side stop valve.
(Keep the liquid-side stop valve closed.)
3. Set the service mode.
In service mode 1, press the "MODE" button for 5 seconds to enter
service mode 2.
Press the "SET" button to set the LED indicators to the "additional
refrigerant charge operation" indication.
Press the "RETURN" button.
Press the "SET" button to set the LED indicators as shown at right.
Press the "RETURN" button to end the setting operation.
Press the "RETURN" button again to start operation.
Low pressure level is indicated during operation.
Operation ends (after 30 minutes).
(Pressure level immediately before is indicated by flashing LEDs.)
Push "Mode" button once to complete aditional refrigerant change.
4. The refrigerant charge is completed when the specified amount of refrigerant is added. If the refrigerant
charge operation is not completed in 30 minutes, make the settings again and restart the operation.
(When the Confirmation button is pressed during additional refrigerant charge operation, the operation
stops.)
5. Disconnect the refrigerant charge hose, then fully open the liquid-side stop valve.
General Information
Test Operation
8 7 7 7 7 7 7
8 7 8 7 8 7 7
8 7 7 7 7 7 9
8 7 7 7 7 9 7
8 7 7 7 7 8 7
9 9 7 7 7 7 7
Higher than 3.5k
8 8 8 8 8 8 8
3.5k or less
8 8 7 7 8 8 8
2.5k or less
8 8 7 7 7 8 8
1.5k or less
8 8 7 7 7 7 8
8 8 7 7 7 9 9
This LED indication shows that the
operation stopped with pressure
level at [2.5 k or lower].
8 7 7 7 7 8 7
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