The gas boiler "Wisman" 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 specifications. In the domestic market, floor and wall boilers with two circuits are especially popular, the former being used not only in private housing construction, industrial and commercial facilities, but even in city apartments.
About company
Viessmann is a German corporation that occupies a leading position among manufacturers of heating equipment. The company began its history with a small manufactory founded in 1917. Today it is a giant concern with 22 plants in 10 countries around the world. The company has a wide network of dealerships that actively sell Wiesmann products outside of Germany.
What is a low temperature boiler?
Viessmann presents products that offer all the possible benefits that are characteristic of European gas equipment. The main difference between low-temperature boilers from the German manufacturer is the temperature of heating 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 to 40-50 ° C. It's all about modulating burners. If in conventional gas appliances the heating is controlled due to the burning time, then in low-temperature devices the burner power changes.
The principle of operation of low-temperature models is the change in heating of the coolant depending on the weather on the street. For this, a signal from a street sensor is supplied 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 generated during operation. But the developers have provided anti-condensation measures in low-temperature equipment. An ideal indicator of the return temperature for the turbocharged version is considered to be 30-35 ° C
How does it work?
The gas apparatus must be installed in such a way as to exclude vibration and exposure to heat. After installation, connection begins - to the power grid, to the water and gas pipes. The principle of operation of the atmospheric apparatus:
- Oxygen comes from the room, and the exhaust gases are discharged through a chimney.
Turbo versions work differently:
- They don’t need a chimney. Gases are removed in the horizontal direction by means of coolers. The fan not only removes combustion products, but also supplies combustion air from the street.
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 range of prices - from 100,000 to 400,000 rubles - is for heaters with a capacity of 29,000 and 132,000 watts, respectively. Naturally, their spare parts also differ in high cost.
Model Overview
The grand range of gas heaters from Viessmann is presented by six lines - the equipment presented by them is distinguished by design features.
Vitopend 100 w
Models with the above characteristics are presented in two variations - with a chimney and turbocharged. Energy dependent. 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. 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 - lamellar type.
• Burner - atmospheric stainless steel.
• Expansion capacity - 6-10 liters for 24,000 and 30,000 watts, respectively.
Vitopend 111 w
Wall models. They differ from the previous line with a built-in boiler. The material of the latter is stainless steel. Boiler capacity - 46 l. The expansion capacity of the membrane type is 10 liters. Characteristics of a model range:
• Water consumption - 860l / h.
• Weight - from 60 to 67 kg.
• Power - from 24,000 to 30,000 watts.
• Efficiency - 88-92%.
There is a loading pump for the boiler and a built-in 2-speed circulation pump. In versions with a closed firebox, there is a 2-stage fan. Additionally purchased expansion tank for domestic hot water - 2 liters. Ignition - electronic. Power modulation. A self-diagnosis function is provided. There is frost protection. Options: instructions, installation diagram and other technical documentation, mounting kit. The device with a closed firebox is additionally equipped with a set of diaphragms. Can be converted to liquefied gas.
Vitodens 100 w
Condensing apparatus in wall-mounted design. Differ in the increased efficiency. Available with one and two circuits. For systems with forced circulation of water (other coolant).
• Weight - 43kg.
• 19 - 35 kW.
• Efficiency 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 unit for condensate drainage and a blower fan. The display shows temperature, information about the Matrix cylindrical burner, operating mode and error codes. Ignition - electronic. Power is modulated in both modes - heating and domestic hot water. Self-diagnosis has advanced features. 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. The water in the domestic hot water is heated to 30-60 ° C.
Vitodens 200 w
VITODENS 200-W WB2C - high-power condensation type heaters. Automation Vitotronic. Perhaps cascading inclusion. Four devices are connected at once - their total power is 600,000 watts. This is enough for heating 6,000 square meters. m. The series is intended for multi-apartment buildings, therefore it is usually available with a single circuit. They can work 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 homes with less than 600 square meters. m - with connection to the "warm floor" system. They can work on any liquid gas, methane. Automatics Vitotronic 200. Heat exchanger material - stainless steel. Specifications modification CU3A:
• Single-circuit boiler with heating capacity (min / max) - 6,300 - 35,000 watts.
• Efficiency - 109%
• Weight - 125 kg.
• Closed combustion chamber.
Vitocrossal 200
Floor execution. These are powerful condensation devices. Used IR burners. Silent Installed in cascade. One of the modifications is 200 CT2:
• 135,000-628,000 watts.
• Efficiency - up to 109%.
• Weight 135-404, 168-503, 209-628 kW - 596, 639 and 768 kg, respectively.
Vitogas 100 F
Floor version. The heat exchanger is made of cast iron. Atmospheric type. Open firebox. A number of capacities is 29,000-140,000 watts. It is in high demand among consumers. The best combination in the price-quality formula. Modification 100-F GS1D170 has the following characteristics and design features:
• Single-circuit.
• 388 kg.
• 72,000 watts.
• 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.
• Vitoplex 100 - 300. Floor standing. Small dimensions. 90-200 kW. Efficiency 88%. The most uneconomical. Diesel gas.
• Viessmann Vitomax - for industrial use. Up to 6000 kW.
Which is the most popular?
In the ranking of demand for heaters, Viessmann wins the dual-circuit model Vitopend 100 WH1D 24 kW. Wall execution. Heats the housing up to 250 sq.m. Water flow rate - up to 11 l / min. And most importantly - it costs relatively little: approximately 51,000 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 Wismann. The nuances of installation depend on the type of device:
- Open firebox. 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, therefore it is necessary to install forced ventilation.
- Closed firebox. Turbo versions do not need forced ventilation - combustion air is supplied from the street via a coaxial pipeline.
Coaxial chimney is optional. Some stores sell them without certificates - such chimneys are of interest to gas services, which then translates into a fine. When buying this item, be sure to be interested in the certificate. Another installation condition is that a free space of at least 40 cm should remain above the device.
Reviews
Vitopend 100: Fedor L., Gorodets:
Not worth the money. Indeed, it works silently - this is a plus. It is easy to manage. Provides hot water - without any jumps in temperature. The power of the device is enough for almost a continuous hot stream. But we are faced with a standard problem for a gas heater - it turns off. There were other breakdowns. Not as economical as we would like - we have 78 sq.m., and up to 280 cubic meters of gas are consumed monthly for their heating. During operation, there were two failures - 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: Peter H., Dalnerechensk
We are satisfied with the acquisition - there were no breakdowns during the year of operation and we did not notice any flaws. Almost silent. Economical - we pay less for gas than when using a domestic analogue. Water is heated almost instantly, the temperature does not fall and does not jump.
Vitodens 100 w: Danil L., Kursk
A good "German" boiler Turkish assembly. My good old Westen could not stand the next power surge - it would cost me 20,000 rubles to repair it, so I decided to take a new one. I chose condensation. Definitely it is economical - now I consume 10% less gas. Stainless steel heat exchanger and burner - will last a long time. It works very quietly, even a click when arson is almost inaudible. The downside is 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 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, elements of the connecting infrastructure prematurely wear out.