Hitachi ATW-RTU-02 Guia De Instalacion página 7

3. Installer Mode
Installer Mode is used to alter the system settings for specific applications, to use the special features
of the Room Unit in a different way or to alter the factory preset parameters. Parameters are divided
into two groups:
- Category 1 parameters – Room Unit Setup
- Category 2 parameters – System Setup.
These are all listed in section 3.5 Installer Parameters Table.
3.1 Entering Installer Mode
1
1 2 3 4
1..6
Press the button.
Press and hold the button and the
PROGRAM & buttons together.
3
Press the or to
change factory setting.
The display will flash
indicating that a change
has been made.
5
Press button
to go to the next
parameter.
3.2 Fail-Safe Mode Setup
The fail-safe mode defines the system status if the RF communication is lost (e.g. when the Room Unit
stops communicating due to discharged batteries). If the system is a direct (radiator one), then the
factory setting will make the system revert to a set point of 10°C for frost protection. If indirect loops are
added, the system will continue to operate at the last communicated setpoint.
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Installation and Operation Manual
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The unit will display the first parameter of installer
parameter group category 1 (from Parameter n.1
to n.19) as shown
4
Press the green
button to confirm the
change.
The display will stop
flashing.
6
Press the button to go to Installer parameter
group category 2 ( ) (from Parameter n.4 to n.14).
7
To exit the installer mode press the
buttons.
7
or