TECHNICAL DATA SHEET
Unical Kon1 24C Kw Methane Condensing Boiler Complete with Flue Gas Exhaust Kit
Unical Kon1 24C Kw Methane Condensing Boiler Complete with Flue Gas Exhaust Kit
Seasonal heating efficiency class A
Declared load profile: XL
Seasonal health efficiency class: A
Rated output power: 23.6 kW
Seasonal space heating energy efficiency ηs 92%
Useful thermal power in high temperature regime (Tr 60 °C / tm 80 °C): 12.7kW
Efficiency at nominal thermal power in high temperature regime (Tr 60 °C / Tm 80 °C) η4: 87%
Useful power at 30% of the nominal thermal power in low temperature regime (Tr 30 °C) P1 kW: 4.2 kW
Efficiency at 30% of nominal thermal power in low temperature regime (Tr 30 °C) η1: 96.7%
Annual electricity consumption QHE GJ: 40
Water heating energy efficiency ηWH: 86%
Daily fuel consumption Qfuel: 22.07 kWh
Sound power level indoors Lwa db(A) 51
Annual electricity consumption AEC: 400 kWh
DHW production in cont. Dt 25 K (mixed): 13.2 l/min
Expansion vessel capacity: 7 litres
Heating circuit pressure (min-max): 0.5-3.0 bar
Sanitary circuit pressure (min-max): 0.5-6.0 bar
IP X5D protection rating
NOx class: 6
Dimensions (HxWxD): 810x450x345 mm; 40kg
UNICAL KON1 
KON1 is the latest addition to the "designer boiler" lineup that Unical presents in collaboration with ArtÙ Design Studio. Soft lines and an elegant front, available in a variety of colors, enclose a latest-generation condensing boiler that runs on natural gas or LPG, producing instant hot water at up to 18 l/min. KON1 can also be installed with a completely concealed flue system. The range includes three power levels: 24, 28, and 35 kW. The front, made of polymethyl methacrylate, is available in the following variants:
There are no visible controls on the boiler, but it is EASYr (standard) which, wirelessly, performs the dual function of chronothermostat and remote control inside the home.
Two-way radio frequency communications;
Check operating parameters;
Weekly programming;
Room antifreeze function;
Can be combined with an external probe;
Can be wall mounted or free standing with support.
Strengths
The exclusive Unical system of completely concealed hydraulic and flue connections allows for elegant installation and integration of KON1 in both modern and classic environments, avoiding unsightly exposed pipes;
Secondary exchanger: made of AISI 316L stainless steel, particularly efficient because it is suitable for condensing boilers, taking advantage of their low temperatures. Its "eco-friendly" design is distinguished by a new plate design that allows for greater heat transfer, making the most of the characteristics of stainless steel. Available with 12 plates (model 24) or 16 plates (models 28 and 35);
HWS “Hot Water Speed” is the new KON1 electronics that switches from the heating to domestic hot water function with the burner and pump always active, significantly improving the user's comfort as he does not have to wait for hot water;
Modulating premix burner: electropneumatically controlled with a constant combustion ratio. The "Flat" burner ensures: long life thanks to low thermal and mechanical stress and the physical inalterability of the FeCrAlloy fiber fabric; ideal heat propagation by radiation thanks to its chemical-physical structure capable of developing a particularly soft and bright flame; low NOx class 6 (UNI EN 15502-1); quick to clean thanks to the "Quick release" lock on the complete plate. The release allows the complete removal of the combustion system.
Gas fan and valve: the valve is designed to compensate for gas pressure fluctuations in the network and stabilize the supply pressure independently of the suction pressure generated by the premix fan. Easily adjustable and maintainable, it ensures an accurate air/gas combustion mixture to guarantee high CO2 levels and promote condensation with very low CO and NOx levels;
Ultra-flat Al/Si/Mg primary exchanger: made of a special Aluminum/Silicon/Magnesium alloy that ensures efficiency and durability, so much so that Unical guarantees it for a full 5 years. Thanks to the internal heat exchange configuration, efficiencies exceeding 107% in condensing mode are achieved, which translates into significant cost savings and a minimal environmental impact for the user. The 28-35 versions are suitably larger;
High-efficiency modulating circulator with deaerator: automatically adjusts boiler power to system needs. Particularly quiet and compact, it integrates with the safety valve, bypass, and drain valve. 
Other functions and features
Exceptional modulation ratio up to 1:8;
Efficiency >107% (ex EC dir. 92/42) ηs 93% (EU regulation 813/2013 - ERP dir. 2009/125/CE);
Electronics with HWS “Hot Water Speed” function: heating/sanitary switching without stopping the pump;
Low NOx class 6 (according to EN 15502-1) thanks to the modulating premix burner;
Hot water production up to 18.3 l/min Dt 25 with special exchanger;
Management of 2 temperature zones (high/low) by applying a second on/off thermostat;
“Pit stop” maintenance and convenient internal control panel for technical assistance interventions;
EASYr: remote control (standard) with chronothermostat functions, can be applied wirelessly to the wall or placed on a support;
Prepared for future applications in systems and suitable to meet the requirements set out in the new installation standards;
Electronic antifreeze function from 5°C;
Pump post-circulation function;
Safety limit thermostat;
Flow temperature sensor;
Return temperature sensor;
Sanitary temperature sensor;
Expansion vessel 7 (24), 10 litres (28/35);
Hydrometer;
Flow switch with filter (cold water);
Safety differential pressure switch against lack of water;
3 bar safety valve;
Antifreeze function and comfort temperature advance;
Gateway for boiler connection;
Paper assembly template for preparing hydraulic connections;
Fixing plugs;
Front panel in polymethylmethacrylate in various colour variations;
Prepared for 60/100 coaxial and 80/80 split exhausts.
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