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The Wiessmann gas boiler is a product of the German concern Viessmann, which produces almost all possible versions of heating equipment. The manufacturer presents models in a wide range of technical characteristics. In the domestic market, floor and wall-mounted boilers with two circuits are especially popular, and the former are used not only in private housing construction, industrial and commercial facilities, but even in city apartments.
About Us
Viessmann is a German corporation that occupies a leading position among manufacturers of heating equipment. The company began its history as a small manufactory founded in 1917. Today it is a giant concern with 22 factories in 10 countries around the world. The company has a wide network of dealerships actively selling Wiesmann products outside of Germany.
What is a low temperature boiler?
Viessmann presents products that have all the possible advantages that are typical for European gas equipment. The main difference between low-temperature boilers from a German manufacturer is the heating temperature of the coolant. In conventional heaters, it is 90 ° C, while in Wisman it is only 60-70 ° C. When the coolant is fed back, it is heated by 40-50°C. It’s all about modulating burners. If for conventional gas appliances the heating is adjusted due to the burning time, then for low-temperature appliances the burner power changes.
The principle of operation of low-temperature models is to change the heating of the coolant depending on the weather outside. To do this, a signal from a street sensor is sent to the control unit. It gets colder – the intensity of the flame grows, the house maintains a comfortable temperature. The disadvantage of this solution is the condensate formed during operation. But the developers have provided anti-condensation measures in low-temperature equipment. The ideal return temperature for a turbocharged version is 30-35 ° C
How does it work?
The gas appliance must be installed in such a way that vibrations and heat are not affected. After installation, the connection begins – to the power grid, to water and gas pipes. The principle of operation of the atmospheric apparatus:
- Oxygen comes from the room, and exhaust gases are removed through the chimney.
Turbo versions work differently:
- They don’t need a chimney. Gases are removed in a horizontal direction by means of coolers. The fan not only removes combustion products, but also supplies air from the street for combustion.
What are the disadvantages?
German boilers are almost flawless in technical terms, most of the shortcomings are related to their cost. Having learned how much Wisman products cost, many buyers go in search of cheaper analogues. Indeed, the prices are impressive. The price range is from 100 to 000 rubles – this is for heaters with a capacity of 400 and 000 W, respectively. Naturally, their spare parts are also expensive.
Models overview
The grandiose range of gas heaters from Viessmann is represented by six lines – the equipment presented by them differs in design features.
Vitopend 100 w
Models with the above characteristics are presented in two variations – with a chimney and turbocharged. Volatile. But they consume little electricity – up to 12 kW from a 220 V network. It is recommended to connect a voltage stabilizer – in order to avoid damage to the electronic board. They work silently. Designed for heating with the organization of forced circulation of the coolant. Design features:
• IPX4D protection system.
• Type of primary heat exchanger – monometric.
• Secondary – plate type.
• Burner – atmospheric stainless steel.
• Expansion capacity – 6-10 liters for 24 and 000 W, respectively.
Vitopend 111 w
Wall models. Differ from the previous line in the built-in boiler. The material of the latter is stainless steel. Boiler capacity – 46 l. Expansion tank of membrane type – 10 l. Characteristics of the model range:
• Water consumption – 860l/h.
• Weight – from 60 to 67 kg.
• Power – from 24 to 000 watts.
• Efficiency – 88-92%.
There is a loading pump for the boiler and a built-in 2-speed circulation pump. In modifications with a closed firebox, there is a 2-stage fan. Additionally, an expansion tank for hot water supply is purchased – 2 liters. Ignition – electronic. power modulation. A self-diagnostic function is provided. There is frost protection. Complete set: instructions, installation diagram and other technical documentation, mounting kit. A device with a closed firebox is additionally supplied with a set of diaphragms. Can be converted to LPG.
Vitodens 100w
Wall-mounted condensers. Differ in the increased efficiency. Are issued with one and two contours. For systems with forced circulation of water (other coolant).
• Weight – 43kg.
• 19 – 35 kW.
• KPD up to 97-107%
The primary heat exchanger is self-cleaning. You can connect a boiler. Membrane expansion tank – 8 l. Built-in circulation pump. There is a condensate drain and a blower fan. The display shows temperature, information about the Matrix cylinder burner, operating mode and error codes. Ignition – electronic. Power is modulated in both modes – heating and DHW. Self-diagnosis has advanced functions. There is protection against blocking the pump and against freezing. If necessary, you can connect a room thermostat with which you can adjust the parameters. The minimum temperature in the heating circuit is 40°C. Hot water is heated up to 30-60°C.
Vitodens 200w
VITODENS 200-W WB2C are high power condensing type heaters. Vitotronic automation. Possibility of cascading. Four devices are connected at once – their total power is 600 watts. This is enough for heating 000 sq. m. The series is designed for apartment buildings, so they are usually produced with one circuit. They can run on liquefied gas.
• 15 – 100 kW.
• Weight – 65-83 kg.
• Efficiency – 96-106%.
• Minimum fuel pressure – 20 mbar.
Vitocrossal 300
Floor condensing devices. Power range from 26 to 60 kW. Low temperature, with floor installation. They are usually used for heating houses with less than 600 square meters. m – with connection to the “warm floor” system. Can work on any liquid gas, methane. Automation Vitotronic 200. Heat exchanger material – stainless steel. Technical characteristics of modification CU3A:
• Single-circuit boiler with heat output (min/max) – 6 300 – 35 000 W.
• Efficiency – 109%
• Weight – 125 kg.
• Closed combustion chamber.
Vitocrossal 200
Floor execution. These are powerful condensing type devices. Used IR burners. Noiseless. Installed in cascade. One of the modifications – 200 ST2:
• 135-000 W.
• KPD – up to 109%.
• Weight 135-404, 168-503, 209-628 kW – respectively 596, 639 and 768 kg.
Vito gas 100 F
Outdoor version. The heat exchanger is made of cast iron. atmospheric type. Open firebox. Power range – 29-000 watts. It is in high demand among consumers. The best combination in the “price-quality” formula. Modification 140-F GS000D100 has the following characteristics and design features:
• Single circuit.
• 388 kg.
• 72 W.
• Efficiency – 92%.
• Convection type.
• Electronic control.
What other lines are there?
The manufacturer also offers:
• Vitorond 100. Floor model. Cast iron heat exchangers. 18-100 kW. Gas and diesel fuel.
• Vitoplex 100 – 300. Floor version. Small dimensions. 90-200 kW. Efficiency-88%. Most uneconomical. Gas-diesel fuel.
• Viessmann Vitomax – for industrial use. Up to 6000 kW.
What is the most popular?
In the demand rating for Viessmann heaters, the double-circuit model Vitopend 100 WH1D 24 kW wins. Wall execution. Heats housing up to 250 sq.m. Water supply rate – up to 11 l / min. And most importantly – it costs relatively little: approximately 51 rubles.
Installation and operation
Installation, start-up and adjustment of gas heaters is carried out by specialists, especially when it comes to such high-tech equipment as Wiesmann. The nuances of installation depend on the type of device:
- Open firebox. The combustion products are discharged through a corrugated stainless steel pipe. Its diameter should not be less than the diameter of the heater connector. Atmospheric burners use room air, so it is necessary to install forced ventilation.
- Closed furnace. Turbocharged versions do not require forced ventilation – combustion air comes from the street through a coaxial pipeline.
A coaxial chimney is purchased separately. Some stores sell them without certificates – such chimneys are of interest to gas services, which then results in a fine. When buying this item, be sure to ask about the certificate. Another installation condition is that there must be free space above the device – at least 40 cm.
Reviews
Vitopend 100: Fedor L., Gorodets:
Not worth that kind of money. Indeed, it works silently – this is a plus. They are easy to manage. Provides hot water – without any temperature fluctuations. The power of the device is enough for almost a continuous hot stream. But we encountered a standard problem for a gas heater – it turns off. There were other breakdowns as well. Not as economical as we would like – we have 78 sq.m., and their heating takes up to 280 cubic meters of gas per month. During operation, there were two breakdowns – a problem with the valve and the fuel supply was disrupted. And this is in the first winter season. It also shuts down for reasons unknown to me.
Vitopend 100: Petr Kh., Dalnerechensk
We are satisfied with the purchase – during the year of operation there were no breakdowns and we did not notice any shortcomings. Virtually silent. Economical – we pay less for gas than when using a domestic analogue. The water heats up almost instantly, the temperature does not drop or jump.
Vitodens 100 w: Danil L., Kursk
A good “German” boiler of Turkish assembly. My good old Westen could not stand the next power surge – repairing it would cost me 20 rubles, so I decided to take a new one. I chose condenser. It is definitely economical – now I use 000% less gas. Heat exchanger and burner made of stainless steel – will last a long time. It works very quietly, even a click when arson is almost inaudible. Minus – the price and high cost of maintenance.
Viessmann gas equipment is a real dream for heating workers. Wisman boilers are appreciated not only by ordinary consumers, but also by public utilities, as well as specialized enterprises working with industrial equipment. The main disadvantage of German heaters is the high price. It is also noted that with intensive use, the elements of the connecting infrastructure wear out prematurely.