Collector cabinet. To automatically control the heating of radiators and underfloor heating, electric valves are installed on the collector, controlled by the “smart home” system
MEIBES quick assembly modules simplify the installation of a boiler room
The gas analyzer allows you to timely shut off the gas supply to the boiler burner in case of a leak
Buderus panel radiators are characterized by high heat output and low inertia
The heart of the boiler room- boiler Logano G315
The piping of the heat exchange equipment is made of polypropylene pipes
The Gold rotary heat exchanger is a short cylinder consisting of alternately flat and corrugated metal strips wound on top of each other, forming air channels. The rotor rotates in the supply and exhaust air streams, so that the exhaust and supply air pass through the same channels. The material of the rotor transfers heat from the hotter extract air to the cooler supply air.
The water-cooling machine Gold Cooler is built on the basis of a high-efficiency and low-noise compressor. ATThe machine is equipped with a hydraulic module installed at the factory. Thanks to this, the customer was relieved of the need to purchase additional equipment for supplying coolant to the heat exchanger, as well as pay for its commissioning
The control controller is built into the body of the Gold unit. For dialogue with the user, the unit is equipped with a wired multilingual control panel
The Gold Cooler water cooler is compact. It occupies less than 1 m2 ventilation chamber area
Efficient linear air distributors are used to supply fresh and remove polluted air in the kitchen
Under the ceiling of the entrance hall of a country house, a compact supply ventilation grill manufactured by Stifab Farex is installed.
The silence of the forest, the fresh wind from the river, the bright colors of the sunny morningThe best stress relievers. Realizing this, many people today prefer to live in the bosom of nature, in their own cottage, equipped with a reliable climate system that provides comfortable indoor air parameters.
In winter and during the transitional period (spring and autumn), the climate system of a country house in central Europe provides heating, and in summer, in the heat, air cooling- the temperature in the rooms is constantly kept at the level of 22–24
The fruits of evolution
From time immemorial, stove heating has been used for heating and organizing air exchange in country estates. A well-heated stove retained heat for a long time and provided space heating in cold weather. Polluted air left the house through the chimney, supporting the combustion of fuel during the furnaces, and fresh air entered the rooms through leaks in windows and doors. Moreover, our grandfathers were not seriously worried about even small values of the fuel efficiency- firewood or coal, no temperature fluctuations that reached + ‑2.5 between fireboxes
However, in recent years, technological progress has radically changed the “suburban” way of life. The requirements for comfort have changed, new construction technologies have appeared, and after this, new microclimate technologies, hitherto unknown in a country estate, have become widespread.
The desire to get rid of the shortcomings of stove heating that are obvious to a modern city dweller forced developers to look for more advanced heating systems. To protect against the winter cold, country houses began to be equipped with water radiator heating systems (similar to those used in urban high-rise buildings), as well as water-heated floors. This technical solution turned out to be very appropriate, since it ensures the constancy (storage throughout the day) of the value set by the user with an accuracy of + ‑1
At first, they also tried to organize the ventilation of cottages by analogy with urban multi-storey buildings, equipping them with natural exhaust. However, this approach unexpectedly turned out to be a dead end. The use of double-glazed windows, doors with a hermetic porch and other modern building materials and mechanisms, of course, led to a significant reduction in heat loss in country houses, made them more aesthetic. But due to the lack of gaps in the bindings of the frames and in other building structures, natural ventilation turned out to be ineffective. Fighting the stuffiness and mustiness of the air with the help of volley ventilation (opening windows in all rooms at the same time for 10–20 minutes) is uncomfortable because of drafts that are poorly tolerated by the elderly and children, and also for safety reasons. Moreover, the decrease in the quality of the air environment due to a sharp increase in the number of vehicles and forest fires in dry summers has generally called into question the possibility of regularly opening windows.
Thus, the urgent need to use mechanical ventilation systems in a modern country house was realized. After all, they are able to provide year-round high-quality pre-cleaning, heating or cooling and comfortable distribution of supply air in the premises, as well as the removal of polluted air and odors.
Energy saving and comfort
Of course, the widespread introduction of new climate systems in country life does not always go without a hitch. Today, on average, the climate system accounts for 30 to 70% of the total energy consumption of a cottage, which in monetary terms (utility payments) for a house with an area of 300–500m2 translates into several thousand euros per year. Andthis is not the limit- the cost of operating the system is constantly increasing as energy prices rise. In addition, gas is usually supplied to a country house in a strictly limited volume.- the supply gas pipeline often does not allow you to get more than 100–150kW of thermal power. BUTin some cases this is not enough even for a relatively small estate. After all, during the period of maximum energy consumption, heat is required for heating radiators, as well as underfloor heating, ventilation and hot water systems, not to mention pool heating and other needs. Occasionally, the missing kilowatts can be “gained” through the use of electricity, but this, of course, leads to an increase in operating costs.
ATIn the context of a fairly tight limit and high prices for energy resources, the installation of traditional boiler and ventilation equipment in a country house turns out to be a wasteful event, and often practically unrealizable. To reduce energy costs, it is necessary to use somewhat more expensive, but economical equipment when completing the climate system.- air handling units with heat recovery, as well as highly efficient boiler equipment.
Modern energy-efficient equipment for heating and ventilation usually operates independently in country houses, using “advanced” individual control algorithms. But special automation functions allow you to integrate this technique into the “smart home” system. Despite some increase in the cost of the air conditioning project (from 30%), this leads to an additional improvement in its energy-saving properties, simplifies the procedure for creating a climate and improves the safety of engineering systems. Moreover, they are controlled both from individual control panels of the installations, and from a single control panel of an integrated system. It is enough for the user to set the desired temperature in a particular room, after which the “smart home” itself will choose the optimal mode of operation of heating, ventilation and air conditioning. In case of emergencies (for example, in cases of heating leakage, ventilation failure or simply dirty air filters), the SMS messaging system will instantly send information about the problem to the owner’s mobile phone, as well as to the emergency technical or medical assistance service.
An example of the implementation of a modern energy-efficient climate system in a country house may well serve as a climate control system in a two-story cottage with an area of 450m2. It is located in the village of Lesnye Dali near world, located on the Minsk highway. The complex of equipment serves all the main and auxiliary premises of this modern country house. ATliving area (two bedrooms, a living room, a dining room, a fireplace room and an office), as well as in the kitchen, the temperature is automatically maintained at 22–24
Boiler room area 6m2 (ceiling height- 2.6m) is located on the first floor, in the right wing of the country house, next to the garage. It has two exits.- one outside, the second in the garage. The boiler room is separated from the latter by a special soundproof fireproof door. For natural light in the outer wall, two windows with an area of 0.8m2. Air extraction is carried out using a low-noise fan EBERLE (Sweden). The floor of the room has a slope towards the sewer drain. All equipment is connected to the common ground loop of the cottage and placed in the boiler room in such a way that it is easily accessible for maintenance and repair.
ATthe boiler room is equipped with a Logano G315 heat generator manufactured by BUDERUS (Germany), having a thermal capacity of 105kW. The boiler runs on main natural gas. ATIn the combustion chamber of the boiler, a three-way principle of flue gas movement is used, which, in combination with a developed heat exchange surface and thermal insulation of the boiler block, ensures a fairly efficient use of the energy released during fuel combustion (the efficiency reaches 95%). Furnace material- gray cast iron- guarantees high resistance to corrosion and long service life of the boiler (resource- 80 years). The boiler can operate in low temperature mode- the “Thermostream” technology implemented in its design prevents the formation of caustic condensate on the furnace surfaces when the temperature of the water returning to the device (return line) drops to room temperature, and also helps to increase the efficiency of the heating system and reduce the emission of harmful substances.
For the most efficient combustion of fuel, the boiler is equipped with a modulating two-stage gas burner K3x‑G, 1″ company K
The boiler is controlled by an energy-efficient microprocessor automation system Logomatic 4211 (BUDERUS). It sets the algorithm for the operation of four load circuits (radiators, underfloor heating, an additional heating water heater for ventilation and hot water supply) with mixers according to its own programs. The entire boiler piping was made using MEIBÖS (Germany) modular quick assembly groups, the use of which made it possible to eliminate design errors; reduce time, as well as improve the aesthetics and quality of installation; Simplify equipment maintenance.
Part of the power generated by the boiler is used to heat domestic hot water. To do this, the device is equipped with a 300-liter vertical storage boiler Logalux ST300. The boiler is located in the boiler room and is capable of supplying up to 1355 liters of water heated to 45
ATIn winter, most of the heat produced by the boiler is used for space heating and supply air heating. ATIn the cottage, a two-pipe collector-beam wiring diagram for the radiator heating system with pump circulation of the coolant was used. ATelegant low-inertia panel radiators BUDERUS with bottom connection are used as heating devices. The floor water heating system is made according to the “wet installation” method: pipeline sections are laid in a snake in the thickness of the concrete screed. For laying the pipelines of the floor heating system and the heating system, a durable copper pipe manufactured by KME (Germany) was used.
Ventilation and air conditioning system
The ventilation chamber is located on the upper level of the cottage, in the attic. Moreover, the area of the ventilation chamber is only 5.5m2and the ceiling height- 2.5m. Vthe room has all the communications necessary for the operation of the ventilation system: power supply, coolant from the boiler room, drainage. The equipment is installed in such a way that it has unhindered access for maintenance and repair.
Heating system costs
|Radiator Logatrend VK-Profil (Buderus)
|Fixing radiator Buderus
|Automatic air vent
|Cabinet for radiator heating manifolds
|Copper pipe and fittings
|Other equipment and consumables
|HEATED FLOOR (101m2)
|Polyurethane foam with one-sided foil
|Road grid (Europe)
|Cabinet for underfloor heating collectors
|Other equipment and consumables
|Total for radiator and floor heating system (including boiler room)
ATas the basic equipment of the ventilation chamber, a monoblock air-preparing unit Gold manufactured by PM-LUFT (Sweden) was used. It arrived at the facility in full factory readiness (that is, it was equipped with all the necessary equipment and tested by the manufacturer, for installation it only remained to supply power, connect air ducts and drainage).
The Gold unit is equipped with a rotary heat exchanger, which makes it possible to use the heat and coolness discharged into the environment with the exhaust air flow to heat or cool the supply air. In addition, the heat exchanger provides a minimum humidity (30%) of the supply air even under the most unfavorable conditions outside (dry frosty weather), which made it possible to refuse the use of special humidifiers in the cottage.
Fresh air is taken into the unit through the wall grille and the supply air duct; cleared of dust; heated or cooled depending on the time of year due to the energy of the exhaust air returned to the unit from the cottage rooms through the network of return air ducts. Then the supply air enters the main air duct. Used exhaust air is removed from the unit via a roof extractor.
To preheat the supply air in the cold season, a hot water heater with an anti-freeze system is installed on the main supply air duct behind the Gold unit, which is connected to the boiler. Due to the high efficiency of the heat exchanger of the Gold unit (up to 85%), as well as automatic control of flow rates and air temperature, the power of the selected reheater turned out to be almost 10 times lower than the power of the heater, which would have to be used in a classical direct-flow ventilation system of the same characteristics. It is characteristic that the installed heater is used only a few days a year.- the need for its action is felt only at outdoor temperatures below ‑5
FROMIn order to additionally cool the air supplied to the premises in summer, the supply air duct behind the air heater has a liquid heat exchanger connected to the Gold Cooler (PM-LUFT) chiller, which is installed directly in the ventilation chamber. This allowed the owner of the cottage to avoid installing many split systems. The refrigeration machine is standardly equipped with a hydraulic module, thanks to which it was possible to refuse to purchase additional pumping equipment and an accumulator tank to ensure the circulation of the coolant. The chiller condenser is built into the exhaust air duct, as a result, it was not necessary to mount the equipment on the outer wall of the building to the detriment of the architectural appearance of the country house.
The Gold unit located within the ventilation chamber, supply and exhaust air ducts, as well as all heat exchange equipment with piping elements are concentrated near the end wall, which has a width of approximately 2m. There is no leveling section of the air duct and a silencer at the outlet of the unit;
The control computer of the Gold unit is built directly into the unit housing. For dialogue with the user, the device is equipped with a multilingual remote control, on the illuminated liquid crystal screen of which text formulations of commands are displayed. To activate them, you just need to press the selection and input keys. In addition, dozens of useful functions provided by the manufacturer can be implemented, such as a free cooling mode by increasing the inflow of outdoor air without the participation of a refrigeration machine (“night coolness”), a smoke protection mode (in the event of a fire, the unit removes smoke from the rooms, providing clearing of escape routes from smoke) people from the premises). The owner can receive information about the state of the unit, as well as regulate its actions remotely- via the Internet or SMS-messages.
Boiler room costs
|Cast iron heating boiler Logano G315
|Gas burner K3x‑G, 1″, 2 st. (24–149 kW)
|Digital control system Logomatic 4211 with FM442 module, sensor kit, burner second stage cable (Buderus)
|DHW boiler Logalux ST300 (Buderus)
|Pumping equipment (Grundfos, Denmark)- 2000 series
|Expansion tanks for heating and hot water
|Meibes modular quick assembly groups
|Chimney within the boiler room
|Silencer for boiler AGM 660/180, DN 180 RAAB (Germany)
|Consumables (sealant, acetylene, linen, etc.)
The cost of ventilation and air conditioning of the cottage
|Gold air handling unit included (PM-Luft)
|Water heater Gold TBLA
|Electric damper Gold TBSA
|Chiller Gold Cooler
|Axial exhaust fans
|Spiral duct (30 m) DEC (Netherlands)
|Electric iris valves Stifab Farex (Sweden)
|Ventilation ducts, bends, tees (Europe)
|Air intake, air distribution and overflow grilles Stifab Farex
|Roof outlets Vilpe (Finland)
|Thermal insulation sheet Kaimanflex
|Other equipment and consumables
|Installation of equipment and commissioning
During operation, the automation of the ventilation unit constantly adapts to the operating conditions, adjusting the temperature and the total flow of fresh air supplied to the premises flexibly, without unnecessary energy consumption, and constantly monitoring itself with the help of numerous sensors. Automation made it possible to integrate Gold into the “smart home” system, created on the basis of the AMX processor (USA), and to realize the ability to quickly and smoothly control the temperature and air exchange rate individually for each room. Moreover, due to the fact that the automation of the installation “understands” almost all dispatching protocols, the “smart home” system can develop over time.
Outside the ventilation chamber there are networks of supply and exhaust air ducts, like arteries and veins penetrating a country house. The wiring of supply and exhaust air ducts is made behind a false ceiling and false walls of the cottage. The networks consist of round heat-insulated metal pipes. ATSTIFAB FAREX devices (Sweden) were used as final distribution elements. A characteristic feature of the air distributors of this company is the ability, with a temperature difference between the floor and the ceiling of 10
To eliminate smoke smells from burning peatlands and other air pollution, a bypass line with a carbon filter with a large active surface (PM-LUFT) is provided in the ventilation system on the inlet. The line is connected, depending on the situation, in one of two modes- manually (using a remote control) or automatically, by a signal from a carbon monoxide sensor.
The use of energy efficient equipment made it possible not to connect 20kW of additional electric power (for which it would be required to pay about