Unit Controller - Hitachi YUTAKI M RASM-2VRE Instruction Manual

UNIT CONTROLLER

This menu shows the following test to be launched:
• Unit Test Run
• Air Purge
• Screed Drying
After "Test Run" or "Air Purge" 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 unit.
During the execution of this test, the following screen is shown:
• When the test starts, the user controller will exit from the
installer mode.
• If "favourite action button" is pressed during test run, this
function will be executed until the user presses the cancel
option (this is not-limited by time).
• 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.
?
N O T E
• 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.
• If there is a Heater or a Boiler installed, disable the operation before
running the test run.
22 PMML0506 rev.2 - 01/2021
12 UNIT CONTROLLER
12.1 DEFINITION OF THE SWITCHES



Liquid Crystal Display

Screen where controller software is displayed.
OK button

To select the variables to be edited and to confirm the
selected values.
Arrows key

It helps the user to move through the menus and views.
Run/Stop button

It works for all zones if none of the zones is selected or only
for one zone when that zone is selected.
Menu button

It shows the different configuration options of the user
controller.

Return button
To return to the previous screen.
Favourite button

When this button is pressed, the selected favourite action
(ECO/Comfort, Holiday, Simple timer or DHW boost) is
directly executed.


OK

