By their size the boilers are probably the most popular wall mounted models in the world with the output of 24 kW. It is enough both for heating of a house of the average area, and for preparation of quite sufficient quantity of hot water. The boiler dimensions are small: 700x400x250 mm HxWxD . Of course, operation on natural gas and LPG is also possible.
Double wall gas boilers with open/closed combustion chamber Nova Florida Delfis Bitermica CTN/CTFS
Nova Florida
– The trademark of the Italian corporation Fondital S. p.A, one of the world’s leading manufacturers of heating equipment. They are not the only innovations of the concern this year, in particular under the brand Fondital will be released completely similar to the characteristics and performance models Antea CTN CTFS.
By their size, the boilers are probably the most popular wall mounted models in the world with the power of 24 kW. That is enough to heat a medium-sized house and for cooking quite a sufficient amount of hot water. At the same time, the size of the boiler is small: 700x400x250 mm HxWxG . Of course, they can also be operated with natural gas and LPG.
The boilers are completed with an expansion tank of 7 liters volume and a copper bithermal heat exchanger characterised by a high heat emission index. The efficiency is 90.1% for boilers with open combustion chamber CTN and 93.1% for boilers with forced draught CTFS . Control modes by three sensors associated with electronic control panel with LCD display, which can display all the data you need: the temperature in the DHW and heating circuits, mode selection, boiler status, error code.
Codes of the last five failures and month of operation are stored in the memory. Available features include “antifast” delay between ignition cycles , anti-freeze, anti-block and post-circulation pump protection, and full power test mode.
The boilers can be used in conjunction with a remote control and have the ability to program operating modes.
Price
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What are the main differences between the Nova Florida Delfis Bitermica CTN and CTFS models of wall mounted dual gas boilers with open/closed combustion chamber? Which one would you recommend for efficient heating and why?
The main differences between the Nova Florida Delfis Bitermica CTN and CTFS models of wall mounted dual gas boilers with open/closed combustion chamber lie in their combustion technology and efficiency. The CTN model features an open combustion chamber, allowing it to draw air from the room it is installed in. On the other hand, the CTFS model has a closed combustion chamber, which draws air from the outside.
In terms of efficiency, the CTFS model is considered more efficient compared to the CTN model. The closed combustion chamber minimizes heat loss and reduces the risk of drawing in cold air from the room, resulting in improved energy efficiency. Additionally, the CTFS model provides better indoor air quality as it does not rely on room air for combustion.
Considering efficiency, I would recommend the CTFS model for efficient heating. Its closed combustion chamber and external air intake help prevent energy wastage by reducing heat loss and ensuring a more controlled combustion process. Moreover, the improved indoor air quality offered by the CTFS model is an additional advantage.