18
Technical features and dimensions
2. Technical features and dimensions
2.1 Technical features
This boiler is equipped with a fully pre-mixed gas burner. The following models are available:
• KC
condensing boiler with sealed chamber and forced draught, supplying CH water and instant DHW production;
• KR
condensing boiler with sealed chamber and forced draught, supplying CH water only.
• KRB
condensing boiler with sealed chamber and forced draught, supplying CH water only; with 3-way deviating valve for connection
to external water heater (optional).
The following power rates are available:
• KC/KR/KRB 24: with heat input of 23.7 kW
All models are equipped with electronic ignition and ionisation flame sensing device.
The boilers meet local applicable Directives enforced in the country of destination, which are stated on their rating plate.
Installation in any other country may be a source of danger for people, animals and property.
The key technical features of the boilers are listed below.
2.1.1
Manufacturing characteristics
• IPX4D electrically protected control panel.
• Integrated, modulating electronic safety board.
• Electronic start-up with built-in igniter and ionisation flame detection.
• Stainless steel, fully pre-mixed burner.
• Mono-thermal, high efficiency heat exchanger, made of aluminium, with manual air purging device.
• Twin shutter modulating gas valve with constant air/gas ratio.
• Modulating, electronically managed combustion fan.
• High-efficiency CH circulation pump with built-in air purging device.
• Minimum pressure switch.
• Heating flow water temperature probe.
• DHW temperature probe (KC).
• Limit thermostat.
• Flue gas thermostat on discharge tower
• Air pressure switch
• Integrated, automatic by-pass.
• 7 litre expansion vessel.
• System filler cock (KC).
• System water discharge tap.
• DHW plate heat exchanger made of stainless steel (KC).
• Motorised deviating valve (KC/KRB).
• DHW priority switch (KC).
• 13 l/min DHW flow-limiting device (KC).
2.1.2
User interface
• Liquid crystal LCD interface for displaying and setting the boiler operating status: OFF, SUMMER, WINTER and CH ONLY.
• CH water temperature regulator: 20-78°C (standard range) or 20-45°C (reduced range).
• DHW water temperature regulator: 35-57°C (KC) - 35÷65°C (KR/KRB with optional water heater).
• System water pressure gauge.
Summary of Contents for minorca kr
Page 62: ...62 ...
