Viessmann Vitodens 222-F Boiler Review

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Explore the amazing features of the Viessmann Vitodens 222-F gas boiler that utilize the condensing technology for high efficient home space and water heating.


Vitodens 222-F is the gas-powered condensing water heater, designed as the floor-standing unit that utilize the storage water tank and internal indirect coil, for space heating and domestic hot water production, mainly in residential applications. 222 series offers two Energy Star approved models, B2TA-19 with the gas input from 3.5 kW to 20 kW and B2TA-35 with the gas input range from 5.5 kW to 37 KW.

Features Highlights

  • High efficiency and condensing technology

  • Automatic gas conversion

  • Low temperatures

  • Flexible venting

  • Low emission

  • Modulating burner

  • Stainless steel elements

  • Advanced electronics

  • Automatic self-calibration

  • Utilize water tank storage

  • STLS technology

  • Suitable for high altitudes of up to 10 000 feet

  • Efficient work with low emission

What makes Vitodens 222 unique

Comparison

Vitodens 222 FWhen comparing Vitodens 222 with the two previous models from Vitodens 100 and 200 series, 222 group of boilers are not wall mounted but floor standing, due to its heavier and bulkier size, as it utilize one small 26-gal water storage tank and 3.2-gal expansion vessel.

The storage DHW tank is made of the durable stainless steel for protection against the corrosion, and is part of the Advanced Storage Tank Loading System technology, STLS, together with the external plate heat exchanger and the load pump for domestic hot water circulation.

And with the integral sensor technology, minimum flow rate is not required for normal operation.

Water flow

Model B2TA-35, for example, is the powerful model and thanks to the STLS system, the boiler is capable of delivering hot water faster than models without this technology. This translates in 10-minute peak water flow of 60 gallons, or continuous flow of 3.3 GPM, based on a temperature rise of
70 F. The smaller model B2TA-18 comes with the 1.8 GPM of continuous draw rate or 44 gallons maximum draw rate over 10 min. period.

Outdoor reset function

The 222 group of boilers are high efficient, and there are several features that contribute in energy loss reduction such as the outdoor reset function that adapts the operating temperature inside the boiler in relation with the outdoor temperature change.

Quality burner and heat exchanger

The main components are still the same as found on 100 and 200 series and it includes the ultra-performing Inox-Radiant heat exchanger and modulating MatriX cylinder burner, all made of stainless steel, for efficient and reliable work with the reduced emission of greenhouse gases. The Lambda Pro is the combustion management system that allows gas burner to operate with different gas types (natural, LP and LNG) altitudes, allowing self-calibration with the simple adjustments on the electronics, resulting in better efficiency, quiet operation, greener environment and less hassle.

User friendly electronics

The heating process in these combi-boilers is controlled through the HO1B control unit and its microprocessor that helps in achieving the optimum performance and comfort, while the LCD display allows easy and user-friendly navigation through the main parameters of the heating process; from the temperature adjustment to multiple zone heating control, also diagnostic details with fault messages.

The safety features include the frost protection when the outside temperature drops below 34F, anti-seizing pump protection, relief valve, integral diaphragm expansion tank...

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Venting

The installation of the venting system is quite flexible as there are multiple venting options with the pipe lengths of up to 180 ft. As a direct vent unit with the sealed combustion, the Vitodens 222-F boiler can be installed almost anywhere inside the house, including the living area of a house, closet or attics. The system uses the concentric venting system with pipes made of PP, stainless steel or any other approved material, and terminated vertically or horizontally.

(Photo credit Viessmann.ca)

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