EUROSTER UNI4
–
USER MANUAL
3
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Switching off the heating automatically in case of outdoor temperature increase.
2.2. DHW circuit
–
filling the DHW tank
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Controlling the weekly schedule
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DHW priority
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Temporary limitation of DHW priority
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Disinfection of DHW circuits - with the schedule of periodic disinfection.
2.3. DHW circulation circuit
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Controlling the weekly schedule
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Time-base control (without temperature control)
2.4. Feeding
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Automatic identification of the preset temperature and control of the heating source
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Weekly schedule of the heating source operation
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Cooperation with the heat buffer
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Possible operation with two heating sources
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Possible operation without feeding temperature sensor (cooperation with heat
distribution units).
2.5. Utility functions
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Control of a gas-fired boiler or other heating devices with a voltage-free output (NO/NC
relay contacts)
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Alarm output (230 V 50 Hz output)
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Event log (the controller stores 15 last alarms or irregular situations)
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Supported languages: Polish, English, German
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Possibility to test each output
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Overheating protection
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Cooperation with systems with high feeding temperature (up to 110°C) –
on customer’s
request
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Frost protection
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Anti-Stop algorithm
–
protection of pumps and valves against seizure.
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Caution! The controller does not communicate with UNI2 and UNI3 controllers.
3. USER INTERFACE
3.1. Main screen
The following information is shown on the main screen:
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Zone temperatures: current and preset (calculated with a weather-based algorithm)
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Active devices (pump, mixer, boiler)
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Controller status (anti-stop, disinfection, heating season: WINTER/SUMMER and others)
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Time and date.
An example screen with a description is shown below:
Additional heating source on (feeding no.2, without the buffer)
