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Technical features and dimensions
The key technical features of the boilers are listed below.
2.1.1
Manufacturing characteristics
• IPX5D electrically protected control panel.
• Integrated, modulating electronic safety board.
• Solar plant electronic control board.
• Electronic start-up with igniter and ionisation flame detection.
• Stainless steel, fully pre-mixed burner.
• Mono-thermal, high efficiency, composite and stainless steel heat exchanger with air purging device.
• Stainless steel plate heat exchanger for DHW production.
• Twin shutter modulating gas valve with constant air/gas ratio.
• Modulating, electronically managed combustion fan.
• Modulating CH circulation pump with built-in air purging device.
• Heating circuit pressure sensor.
• Hydraulic separator, mixing valves and circulation pumps for high- and low-temperature outlets (V and Z versions).
• Circulation pump for solar plant.
• Solar plant hydraulic control unit.
• Flow meter for DHW flow measurement.
• 13 l/min (KBS 24) and 16 l/min (KBS 32) DHW flow-limiting device.
• Heating flow water temperature probe (double).
• Domestic hot water temperature probe.
• Domestic cold water temperature probe.
• Temperature probe for water heater (bottom and top parts).
• Temperature probe for solar collector.
• Safety limit thermostat on low-temperature flow zones.
• Double safety probe on CH flow.
• Flue gas thermostat on discharge tower
• Flue gas probe on primary heat exchanger.
• Integrated, automatic by-pass.
• Heating expansion vessel - 10 litres.
• domestic hot water expansion vessel - 12 litres.
• Solar expansion vessel - 12 litres.
• Central heating system loading and draining cocks.
• Water heater discharge cock.
• 3-bar safety valve for CH circuit.
• 6-bar safety valve for DHW circuit.
• 6-bar safety valve for solar circuit.
• CH motorised deviating valve
• Motorised solar deviating valve.
