31
Technical features and dimensions
2.1.2
User interface
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Touch interface with built-in LCD to display and control boiler operating condition: OFF, WINTER, SUMMER and CH ONLY;
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System water temperature regulator: 20/78 °C (standard range) – 20/45 °C (reduced range);
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DHW temperature regulator on the control panel: 35/65 °C;
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Manual mixing valve for domestic hot water temperature setting.
2.1.3
Operating features
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CH electronic lame modulation with timer-controlled rising ramp (60 seconds, adjustable).
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Electronic lame modulation in water heater DHW mode.
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DHW function priority.
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Flow freeze protection function: ON 5°C; OFF 30°C or after 15 minutes of operation if CH temperature > 5 °C.
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Water heater freeze protection function: ON 5°C; OFF 10 °C or after 15 minutes of operation if DHW temperature > 5 °C.
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Anti-legionella function (every 15 days the boiler temperature is brought to 65 °C for 30').
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Timer-controlled lue cleaning function: 15 minutes.
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Ignition lame propagation function.
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Possibility to select the heating range: standard or reduced.
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CH Maximum heat input parameter adjustment.
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Ignition heat input adjustment parameter.
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CH thermostat timer: 240 seconds (adjustable).
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Heating pump post-circulation function in CH, freeze protection and lue cleaning modes: 30 seconds (adjustable).
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Water heater DHW post-circulation function: 30 seconds.
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Post-circulation function for heating temperature > 78 °C: 30 seconds.
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Post-ventilation function: at the end of each operation request, the fan continues to operate for 10 seconds.
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Safety post-ventilation function: with low temperature > 95 °C, the fan is activated until the low temperature drops below 90 °C;
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Heating pump and deviating valve anti-shutdown function: 30 seconds of operation every 24 hours with boiler not in use.
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Solar plant pump anti-shutdown function (10 seconds of operation every 24 hours not in use).
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Solar valve anti-shutdown function (M, MV and MZ versions; 10 seconds of operation every 24 hours not in use).
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Mixing valves and zone pumps anti-shutdown function (V, Z, MV and MZ versions; 10 seconds of operation every 24 hours not in use).
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Anti-water hammer function: can be set from 0 to 10 seconds through parameter P15.
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High- and low-temperature zone heating system supply (V, MV, Z and MZ versions).
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Solar plant thermal discharge function (M, MV and MZ functions).
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Solar collector heat transfer function.
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Water heater cooling function.
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Ready for chronothermostat function on the boiler, in combination with two ambient probes (optional, supplied by manufacturer).
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Ready for operation with an OpenTherm remote control (optional, supplied by the manufacturer).
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Ready for operation with external temperature probe (standard on V, Z, MV and MZ versions, optional on all other versions).
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Presetting for connection to a domestic hot water recirculation system, with suitable kit (optional, supplied by the manufacturer).
Содержание MADEIRA SOLAR KRBS 12
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