4 WORKING WITH THIS UNIT
4.1 Chiller On/Off
Starting from factory setup, unit On/Off can be managed by the user using the selector Q0, placed in the electrical panel,
which can switch between three positions: 0 – Local – Remote.
Unit is enabled to start the compressors
Unit On/Off is managed through the “Remote On/Off” physical contact.
Closed contact means unit enabled.
Opened contact means unit disabled.
Refer to the electrical wiring diagram, Field Wiring Connection page, to find the references about
Remote On/Off contact. Generally, this contact is used to bring out from the electrical panel the
on/off selector
Some chiller models can be equipped with additional selectors Q1 - Q2 used to enable or disabled specific refrigerant
circuit.
Unit controller provides also additional software features to manage unit start/stop, that are set by default to allow unit start:
1. Keypad On/Off
2. Scheduler (Time programmed On/Off)
3. Network On/Off (optional with communication modules)
4.1.1 Keypad On/Off
In the main page, scroll down until Unit Enable menu, where are available all settings to manage unit and circuits start/stop.
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