{"product_id":"caldaia-a-condensazione-unical-kon-m-c28-kw-con-kit-fumi","title":"UNICAL KON M C28 Kw CONDENSING BOILER WITH FLUE KIT","description":"UNICAL KON M C28 Kw CONDENSING BOILER WITH FLUE KIT, LOW NOX 6\u003cbr\u003eSecondary heat exchanger: in 12-plate stainless steel with \"thermal length\", optimised for condensation: In AISI 316 stainless steel with 12 plates. The one present on KON stands out from others for its low pressure drops, thus optimising the circulation of hot water in the boiler.\u003cbr\u003eTotal premix burner with constant combustion ratio with modulating electropneumatic gas valve and modulating fan\u003cbr\u003eElectronic ignition and single-electrode flame control\u003cbr\u003eModulation ratio 1:8\u003cbr\u003eMinimum heat output adjustment for heating function\u003cbr\u003eThree-way diverter valve\u003cbr\u003eSafety limit thermostat\u003cbr\u003eOperation down to -15°\u003cbr\u003eFlow temperature sensor\u003cbr\u003eReturn temperature sensor\u003cbr\u003eDomestic hot water temperature sensor (KON \"C\" model only)\u003cbr\u003eExpansion vessel 8 litres\u003cbr\u003eAutomatic air vent\u003cbr\u003eSafety pressure switch against lack of water\u003cbr\u003eSafety valve 3 bar\u003cbr\u003eControl panel equipped with display with function selector and temperature adjustment potentiometer and unlock button\u003cbr\u003eHydrometer\u003cbr\u003eBurner inspection and heat exchanger cleaning system using quick-release closures\u003cbr\u003ePaper mounting template for hydraulic connection preparation\u003cbr\u003eFixing plugs\u003cbr\u003eCondensate drain trap\u003cbr\u003eFixed flow circulator with air vent: Robust, powerful and reliable with excellent flow and head characteristics.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003ePatented heat exchanger: It is made of a special Aluminium\/Silicon\/Magnesium alloy which ensures its efficiency and resistance, so much so that it is guaranteed by Unical for 5 years. Thanks to the internal heat exchange configuration, efficiencies above 107% are achieved in condensing mode, which means great economic savings for the user and a very low environmental impact.\u003cbr\u003e\u003cbr\u003eHWS \"Hot Water Speed\": to eliminate the delay in DHW production: The transition from the heating function to DHW production normally occurs with a delay of about 6 seconds or more, depending on the switching of the priority valve that switches off the pump and burner. In fact, it happens that the user has to wait uncomfortably in the shower for the system to restart. The new electronics adopted here, however, perform \"on-the-fly\" changes with the burner and pump always running, significantly improving user comfort.\u003cbr\u003e\u003cbr\u003e2-zone management with 2 thermostats: KON also offers installation flexibility. Ideal for all systems, thanks to the electronics that allow managing 2 heating zones at different temperatures (high for radiators and fan coils, low for radiant panel systems) by controlling them with both modulating and on-off dedicated thermostats.\u003cbr\u003e\u003cbr\u003eElectronic anti-freeze function: activates at 5°C and works for both domestic hot water and heating, bringing the boiler temperature to 15°C. This prevents the risk of KON freezing if low temperatures persist in the room where it is installed. If there is a gas shortage, a fault message will be displayed.\u003cbr\u003e\u003cbr\u003ePump anti-blocking function: even after long periods of inactivity, KON's electronics send a 5-second control pulse every 24 hours of downtime, starting the pump rotor and thus preventing oxidation from blocking it.\u003cbr\u003e\u003cbr\u003ePump post-circulation function: 15 seconds, controls the thermal balance between flow and return in all conditions, even after intense DHW withdrawals, while in heating, with a duration of 5 minutes, it allows all residual thermal inertia to be dissipated.\u003cbr\u003e\u003cbr\u003eChimney sweep function: facilitates combustion adjustment operations. By pressing the unlock button for more than 5 seconds, it is possible to operate at minimum or maximum power for 15 minutes to analyse combustion.\u003cbr\u003e\u003cbr\u003eSliding temperature operation for maximum economic management.","brand":"Unical","offers":[{"title":"GPL \/ COAXIAL","offer_id":55708330295621,"sku":"UNICAL-KONM28-GPL-COASSIALE","price":1355.0,"currency_code":"EUR","in_stock":true},{"title":"GPL \/ SPLIT","offer_id":55708330328389,"sku":"UNICAL-KONM28-GPL-SDOPPIATO","price":1355.0,"currency_code":"EUR","in_stock":true},{"title":"METHANE \/ COAXIAL","offer_id":55708330361157,"sku":"UNICAL-KONM28-METANO-COASSIALE","price":1355.0,"currency_code":"EUR","in_stock":true},{"title":"METHANE \/ SPLIT","offer_id":55708330393925,"sku":"UNICAL-KONM28-METANO-SDOPPIATO","price":1355.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0952\/2023\/6613\/files\/konm_1.jpg?v=1758534803","url":"https:\/\/www.worldclima.com\/en\/products\/caldaia-a-condensazione-unical-kon-m-c28-kw-con-kit-fumi","provider":"Worldclima","version":"1.0","type":"link"}