Daikin VRV III, Руководство по обслуживанию, Страница: 251 / 567

Test Operation SiUS34-801A_b
236 VRVIII R-410A Heat Recovery 60Hz
10.2.8.2 Test Run
After all works are completed, operate the unit normally and check the following:
(1) Make sure the indoor and outside units are operating normally.
(2) Operate each indoor unit one by one and make sure the corresponding outside unit is also
operating.
(3) Check to see if cold (or hot) air is coming out from the indoor unit.
(4) Push the fan direction and strength buttons on the remote controller to see if they operate
properly.
Note:
Heating is not possible if the outdoor temperature is 75°F or higher. Refer to the Operation
manual.
If a knocking sound can be heard in the liquid compression of the compressor, stop the unit
immediately and then energize the crank case heater for a sufficient length of time before
restarting the operation.
Once stopped, the compressor will not restart for 5 minutes even if the On/Off button of the
remote controller is pushed.
When the system operation is stopped by the remote controller, the outside units may continue
operating for up to 5 additional minutes.
The outside unit fan may rotate at low speeds if the Night-time low noise setting or the External
low noise level setting is made, but this is not a malfunction.
If the check operation was not performed at first installation, the malfunction code [U3] will be
displayed in the remote controller. Perform the check operation following
10.2.6.2.2 Procedure
of Check Operation .
10.2.8.3 Checks After Test Run
Perform the following checks after the test run is complete.
Record the contents of the field setting.
→
Record them on the accessory [REQUEST FOR THE INDICATION] label.
And attach the label on the back side of the front panel.
Record the installation date.
→
Record the installation date on the accessory [REQUEST FOR THE INDICATION] label in
accordance with the IEC60335-2-40.
Attach the label on the back side of the front panel.
Note:
After the test run, when handing the unit over to the customer, make sure the Electrical
Components Box lid, the inspection door, and the unit casing are all attached.
10.2.9 Caution for Refrigerant Leaks
Points to note in connection with refrigerant leaks
Introduction
The installer and system specialist shall secure safety against leakage according to local
regulations or standards. The following standards may be applicable if local regulations are
not available.
The VRV System, like other air conditioning systems, uses R-410A. R-410A itself is an entirely safe
non-toxic, non-combustible refrigerant. Nevertheless, care must be taken to ensure that air-
conditioning facilities are installed in a large enough room. to comply with local applicable
regulations and standards. This precaution ensures that the maximum concentration level of
refrigerant is not exceeded in the unlikely even of a major leak in the system..