Hitachi YUTAKI S80 Serie Manual De Instalación Y Funcionamiento página 89

After "Test Run", "Air Purge" or "Pump down procedure" option is selected, the YUTAKI user
controller asks for the duration of the test.
In case of test run, user can also select the mode of the test (cooling or heating).
When user confirms the test run or the air purge, the YUTAKI user controller sends the order to the
indoor.
During the execution of this test, the following screen is shown:
• When the test starts, the user controller will exit from the installer mode.
• User can cancel the test run regardless of the time left for test finishing.
• The Test Run icon is shown in the notifications zone, but the notification of this test run is taken
from H-LINK.
When test run has finished, an information message is displayed in the screen, and pressing
accept, the user returns to the global view.

NOTE
• When commissioning and installing the unit, it is very important to use the "Air purge" function
to remove all the air in the water circuit. When the air purge function is running, the water
pump starts the automatic air venting routine which consists of regulating the speed and open/
close configured 3-way valve to help to evacuate air from the system.
• For Outdoor test run, refer to Outdoor Unit Installation Manual.
• If there is a Heater or a Boiler installed, disable the operation before running the test run.
PMEN0648 rev.0 - 03/2023
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