Daikin VRV 5 REYA8A7Y1B, Инструкция по установке и эксплуатации

Страница: 152 / 180

22 | Commissioning
Installer and user reference guide
152
REMA5+REYA8~20A7Y1B
VRV 5 heat recovery
4P687640-1 – 2022.07
22.5 About the test run
NOTICE
Make sure to carry out the test run after the first installation. Otherwise, the
malfunction code
will be displayed on the user interface and normal operation or
individual indoor unit test run cannot be carried out.
The procedure below describes the test operation of the complete system. This
operation checks and judges following items:
▪ Check for incorrect wiring (communication check with indoor units).
▪ Check of the stop valves opening.
▪ Judgement of piping length.
▪ Abnormalities on indoor units cannot be checked for each unit separately. After
the test operation is finished, check the indoor units one by one by performing a
normal operation using the user interface. Refer to the indoor unit installation
manual for more details concerning the individual test run.
INFORMATION
▪
It may take 10 minutes to achieve a uniform refrigerant state before the
compressor starts.
▪
During the test operation, the refrigerant running sound or the magnetic sound
of a solenoid valve may become loud and the display indication may change.
These are not malfunctions.
22.6 To perform a test run
1 Close all front panels in order to not let it be the cause of misjudgement
(except the electrical component box inspection opening service cover).
2 Make sure all field settings you want are set; see "21.1 Making field
settings" [
4
128].
3 Turn ON the power to the outdoor unit and the connected indoor units.
NOTICE
Turn ON the power 6 hours before operation in order to have power running to the
crankcase heater and to protect the compressor.
4 Make sure the default (idle) situation is existing; see "21.1.4 To access mode 1
or 2" [
4
130]. Push BS2 for 5 seconds or more. The unit will start test
operation.
Result: The test operation is automatically carried out, the outdoor unit
display will indicate " " and the indication "Test operation" and "Under
centralised control" will display on the user interface of indoor units.
Steps during the automatic system test run procedure:
Step Description
Control before start up (pressure equalisation)
Cooling start up control
Cooling stable condition