Integrated hydronic flow system (IHF system)

Abstract

The Integrated Hydronic Flow system combines a compression refrigeration cycle cooling system and a condensing boiler heating system, designed for the integration of mechanical systems and is considered a versatile device. Utilizing smart programming, where commands are applied to components, by the control panel, water as the heat transfer medium is heated / chilled in thermal sources by circulator pumps and transferred to fan coils / air handling units, floor heating circuits, and snow melting circuits. Simultaneously, hygienic domestic hot water is produced in the coiled water storage tank and disinfected with UV rays. This innovation was initiated as a replacement for conventional systems to overcome the challenges we faced, such as complex design, planning, execution, high-implementation costs, expensive maintenance and operating costs, non-compact and widespread systems, continuous servicing and maintenance, difficult installation and setup, non-smart and complex operation, high energy wastage, non-hygienic domestic hot water, and the risk of freezing in hydronic circuits.

Description

[0001] Invention Description

[0002] Title

[0003] Integrated Hydronic Flow system (IHF system)

[0004] Technical field

[0005] Mechanical Engineering - HVAC systems

[0006] Aims and goals of the invention - Technical issue

[0007] The inspiration for this invention was bom with the approach of enhancing living conditions and protecting the planet, earth, and it led to the creation of this innovative design.

[0008] Typical mechanical installation systems in the heating, ventilation, and air conditioning (HVAC) industry, require space, time, experienced skilled manpower, special equipment and a lot of energy. In addition, the heating and cooling system, including a chiller and a boiler, requires timely maintenance by an expert technician to activate or deactivate the system circuits. Any kind of human error in coordinating the technician’s presence or the technician’s error in maintaining causes serious and nearly irreparable damage to the system and its components. Nevertheless, every construction site always needs specific scheduling and budget compliance to be efficiently completed. Therefore, this system can be offered as a solution for installers and clients who are looking for a reduction in costs and installation time .

[0009] Utilizing this system addresses the issue of space allocation for mechanical rooms in the buildings and eliminates the continuous noise in an enclosed space. It also avoids the thermal loss that can be problematic for the surrounding environment. Consequently, it is considered to decrease the costs associated with these issues and the potential risks caused by earthquakes and their aftermath in a structure .

[0010] The need for manpower to install, maintain and operate the cooling and heating systems will be eliminated by this system and in addition to facilitation, it avoids any possible disruptions during the project. As a result, it improves the project completion schedule and deadline. Since this system is produced and prepared as an apart unit and under the supervision of an authority / factory with experienced persons, it includes all the essential components for proper operation and is guaranteed, tested and ready to be used in projects.

[0011] By relying on innovation, smartness, and suitability, fewer parts and equipment are utilized in comparison with conventional mechanical systems which leads to a reduction of electric energy consumption (especially compared to the variable refrigerant flow system (VRF)), reduced expenses, noise pollution, space required for placement and reduction of costs and coordination of maintenance.

[0012] One of the challenging topics of the projects is the supply of parts which will usually cause life and financial losses when it comes to quality, price, practicality, and inventory. This innovation eliminates this frustration and concern and by using that, these issues will have no place in the project processes .

[0013] As a result, the key goals of reducing costs, increasing energy efficiency, the optimal size of the unit, fast installation, easier and less expensive maintenance and service, and simplifying project phases 1 and 2 by reducing the parameters of design and implementation are achieved.

[0014] Description of the state of prior knowledge and history of developments related to the claimed invention

[0015] After humans used fire to warm their surroundings and stay safe and create comfort in hot seasons, choosing caves for living, using hanging wet reeds, wind deflectors, and creating aqueducts or substructure channels to transfer cold table water, underground and sometimes rivers to cool spaces and then the emergence of fans or blowers, after the invention of the first air conditioner based on the compression refrigeration cycle by Willis Carrier in 1901 and the invention of the Variable Refrigerant Flow system (VRF) in Daikin Company in 1982, the air conditioning system gained power and under the shadow of this title control of things such as temperature, humidity, airflow, air quality was realized.

[0016] In short, to deal clearly and directly with the application of the air conditioning system, it should be stated as follows; any place where there are people or the place and the things in it are important for people, air conditioning should be done, which includes temperature control, humidification, dehumidification, airflow control, airspeed control, air quality control, air freshness control and air pressure control.

[0017] Air conditioning systems are divided into the following five categories based on the type of fluid that:

[0018] - All-air air conditioning system: central air supply units that provide the required cooling or heating with refrigerant fluid and through air ducts; It circulates the air in the spaces, brings fresh air into the spaces, creates a combination of return air and fresh air in the space, or exhaust the inside air simultaneously with air circulation and fresh air injection. These units are called Air Handling Unit and Rooftop Package with DX coil.

[0019] - All-water air conditioning systems: units in which the heat transfer medium is water and the circulator pump is responsible for its circulation. In this way, for cooling, a cycle is established in which the gas refrigerant is compressed by the compressor and directed to the condenser to lose the heat resulting from the increase in pressure. Then it loses its heat by the airflow of the condenser fan and is directed to the expansion valve in the form of liquid refrigerant. When passing through this, its temperature will drop drastically as the pressure decreases and it will continue to move towards the evaporator as a cold liquid refrigerant. In the evaporator, the cold liquid refrigerant moves along the copper tubes, receives the heat of the water passing through the copper tubes, and the refrigerant that absorbs the heat of the water, evaporates and continues moving towards the compressor as a gas refrigerant. This cycle makes the circulating water cool. In this way, circulating water in the chillers creates conditions for cooling process in the fan coils. This group of chillers are called air-cooled chillers.

[0020] Another type of condensing chiller for cooling water is called a water-cooled chiller, whose refrigeration cycle is just like that of an air-cooled chiller, with the difference that the cooling circuit of the gas refrigerant that comes out of the compressor is cooled by the water of the cooling tower instead of air. In other words, the gas refrigerant enters the water-type condenser after leaving the compressor. The working system of this type of condenser can be said to be the opposite of the evaporator. In this way, the water of the cooling tower is passed in the copper tubes surrounded by the hot gas refrigerant, and in the meantime, it absorbs the heat of the gas refrigerant and continues to move towards the cooling tower to be cooled by the tower fans release the heat absorbed from the refrigerant into the environment.

[0021] Another system in cold water production is called an absorption chiller. It is usually for the efficiency of wasted energy or geothermal energy. In these chillers, instead of refrigerant fluid, there is distilled water (water solution with lithium bromide) and instead of a compressor, a generator is placed in this system. They have two categories, single-effect and double-effect, which are used to take advantage of the heat in It is the waste and production of cooling. Of course, they can use fossil fuel sources as cooling units, but they are not economical in terms of efficiency, initial costs, consumption costs and damage to the environment. The functioning of these systems is such that, in the absorber part, water vapor is absorbed by concentrated lithium bromide, and in the generator part, the water turns into steam due to heat. Water vapor turns into liquid in the water-type condenser. Then in the evaporator, it turns into steam again by absorbing the heat of the water circulating in the evaporator. At this stage, it causes cooling. Then this water vapor created in the evaporator is transferred to the absorber and this cycle repeats.

[0022] Now, for heating in the air conditioning system, a cycle is established by circulating water in thermal boilers that have two types of condensing and non-condensing (water in the pipe or gas in the pipe), by the flame that bums. Natural gas or diesel is created, the passing water is heated and by moving towards the fan coils, it provides the conditions for heating. Another method of heating water in the all-water air conditioning system is to equip air conditioning type chillers with heat pump systems, which can also provide heating with refrigerant. In this way, by the special valve (4-way valve) the operation of the heating mode cycle is reversed of the cooling mode operation.

[0023] Finally, with the production of chilled water and heating water, to circuit of fan coils or AHU are connected, to the two-pipe or four-pipe piping system and provides the possibility to supply cooling or heating of the project. Two-pipe system is a piping system that can provide only cooling in hot seasons and only heating in cold seasons. But the four-pipe system can provide cooling and heating simultaneously in every season according to the needs of each consumer unit (fan coils and AHU). The four-pipe system replaces heat pump systems.

[0024] Air to water systems: Central air supply units provide the necessary cooling or heating with the help of water circulating in a chiller or boiler and circulate air at the desired temperature in the space through air ducts. These units are called rooftop packages with water coils.

[0025] Direct expansion systems (DX): Refrigerant is the direct heat transfer medium in these units. The indoor units act as evaporator in summer and as condenser in winter. These DX systems are commonly called splits.

[0026] Heat pump: Refrigerant is the direct heat transfer medium in these units. Their main difference with DX systems is that they can simultaneously cover several indoor units and they can also cool in some units and heat in others. Variable refrigerant flows can perform this technology.

[0027] After introducing the cooling and heating supply systems, we will discuss the domestic hot water supply system, which is important for the daily needs of people. One of the following methods is used to provide hot water:

[0028] Fossil fuel method: Utilizing a condensing or non-condensing boiler that is supplied in three ways:

[0029] Momentary / Instantaneous domestic hot water by a plate heat exchanger: this system with a small boiler as a heat source and connection to a plate-type heat exchanger of the heating system (known as a wall-mounted or Floor-type gas / electrical heater) or a heating system with a water supply system (known as a wall-mounted or Floor-type combi boiler) provides the domestic hot water. In this section, it should be mentioned that the wall-type water heater package units will not be able to cover the heating system and supply hot water at the same time. These exchangers use thin metal plates to exchange heat with high efficiency between hot and cold fluid. The basis of the operation of this type of converter is that hot and cold fluids enter the converter from two opposite directions. These two fluids flow together between the metal plates and exchange heat with each other. The cold fluid is the tap water (city water) which is supposed to be heated by the plate heat exchanger, and the hot fluid is the water heated by the boiler, which is circulated by the circulator pump in the heating circuit of the exchanger and indirectly heats the water. Here, the word "momentary / instantaneous" means that to provide domestic hot water for consumption at the moment of need, heating is done, and there is a delay in getting it from the water outlet faucet of sanitary units. Based on this issue, it can only be used for small or so- called single area uses.

[0030] Domestic hot water by a double-wall hot water storage tank: this tank consists of two concentric cylinders (nested) with two different diameters that are placed inside each other, hot water by a thermal boiler, between the double walls of the chamber due to the diameter difference or in other words the outer cylinder flows and city water enters the main tank or the inner cylinder of the double wall tank. The circulation of hot water by the boiler around the tank which contains city tap water causes heat transfer and hot water is produced, and the thermostat prevents the temperature drop of hot water when the consumption is reduced. It can be said that the simplest method of producing domestic hot water is this method, which is both a cheap solution and has a low efficiency, and that is why it is not possible for widespread use.

[0031] Domestic hot water by a coiled hot water storage tank: This tank is equipped with a heat exchange coil that consists of "U" shaped copper tubes. In this method, the water heated by the boiler flows in the copper coil tubes of the tank and exchanges heat with the city water that enters the tank. In this way, hot water is produced with higher efficiency.

[0032] - Refrigeration cycle heat pump method: This method uses a hot, high-pressure refrigerant fluid to generate hot water for consumption. The compressor facilitates heat transfer by condensing the gas refrigerant, causing it to heat up and transfer to the copper coil surrounding the hot water storage tank. This method can either be connected to the VRF system or operate independently, involving a hot water storage tank equipped with a compressor and a small condenser for when needed.

[0033] In summary, cooling can be provided using devices like fans, water coolers, direct expansion systems and variable refrigerant flow (VRF) systems (both single-zone and multi-zone air conditioners), Chillers with fan coils and rooftop packages are also used. For heating and domestic hot water supply, gas heaters, electric elements, water heaters, combi boilers, thermal boilers in engine rooms, and water storage tanks are utilized. Additionally, direct expansion systems and VRF systems with heat pump technology are employed for heating and domestic hot water supply. Solution for the current technical issue with an accurate and necessary explanation of the invention

[0034] Using this innovation addresses the following issues and barriers:

[0035] - Designs, project documenting process during and before the operation:

[0036] In the BIM design sector, has made tasks easier and more convenient. This optimizes the major and time-consuming parameters and prevents any kind of conflicts among different systems. This means that phase 1 and phase 2 plans are going to be efficient when it comes to architectural, mechanical, and electrical designs. It optimizes the speed of progress, costs and expenses, manpower, list of materials (LOM), etc. They are all caused by integrating the mechanical room with the cooling system which is going to be provided for the project. So, time and energy that were supposed to be used for scheduling, planning, designing, operation and observation will be saved for other steps of the project.

[0037] - Space required for heat sources including mechanical room:

[0038] In order to take advantage of various cooling and heating facilities, such as cooling and heating fan coils, towel dryers, floor heating, snow melting, and domestic hot water supply circuits from conventional installation systems, multiple and separate circuits must be defined for the project. Because of that, separate connections and one or more electrical panels are needed to control these circuits.

[0039] By integrating the cooling system (Air-cooled compression refrigeration cycle) with the heating system (Condensing boiler), the coverage ability of the heating circuit of fan coil, towel dryers, floor heating, snow melting system and domestic hot water supply are all provided. Also, in another version, this unit can connect to a four-pipe system. In other words, it will be able to cover the cooling and heating circuits of the fan coils or air conditioners of the project at the same time in addition to other circuits. This feature is very useful and crucial for projects like hotels, hospitals, medical and laboratory industries. Also, according to the presentation strategies in the domestic and foreign markets, it is possible to provide the unit with a separate towel dryer circuit system instead of the snow melting circuit.

[0040] By combining and compressing these two cycles, optimizing the number of parts and installing the pump installation space, all the needs of a project are solved and the space occupied by mechanical room equipment, which is often considered as efficient space, is open to the project for other usages.

[0041] - Allocated expenses and costs:

[0042] The only solution to avoid huge expense of having two different separated heating and cooling systems is combining these two. By using this innovation, we can see a huge reduction in the following items: the length of the main piping, the space of the main risers, the number of types of equipment such as valves and fittings, pumps and control equipment, insulation equipment and measures, the price of procurement of goods, the number of expert and executive persons, time and a reduction in the cost of installation and maintenance which all play a significant role in reducing total costs.

[0043] - Thermal loss:

[0044] Utilizing a condensing boiler in the combustion cycle is considered a very suitable option to increase efficiency and reduce pollutants. This happens due to the latent heat of the exhaust, which is caused by the combustion of the boiler recovered in the water heating cycle and the exhaust air temperature is relatively lower. It should be noted that the produced heat from the chiller cycle, which is expanded by the fan and condenser, can be recovered and used for domestic hot water supply and guarantees reduced gas and electricity consumption. On the one hand, it reduces the operational costs of the project and on the other hand, it reduces the polluting gas emissions like CO2 and NOx. For instance, most shopping malls are open 7 days a week and as they have HVAC systems working during the year, they have a high potential to save energy. Therefore, understanding how recovering heat, even small, can cause annual energy saving has become really easy.

[0045] Besides, it is followed by a reduction of heat resources interaction, reduction of pipelines, and more accurate control system which lead to less heat loss in heating systems.

[0046] - Installation, operation, repair, and maintenance:

[0047] The installation process, especially in heating systems, will be very complicated, timeconsuming and error-prone. In the sense that for each project, installation should be implemented in its specific environment. Therefore, because this operation takes place in the form of an open system, its installation and commissioning conditions are considered difficult compared to a compact unit. This will bring challenges for both contractors and consumers. One of the most important issues is the need to drain the water circuit of the evaporator during the cold seasons every year and recharge it with soft water during its working season. Ambient air temperature drops cause serious damage especially if the proper maintenance is not done. That is why many users tend to inject antifreeze liquid into the evaporator circuit which not only becomes corrosive and dangerous but also reduces the efficiency of the refrigeration cycle. For example, for every 10% of ethylene glycol charge, around 1% of the cooling efficiency will decrease. On the other hand, separating these two cycles (cooling and heating) increases the maintenance costs and the need for that including switching the modes from cooling to heating and vice versa. It also requires a constant presence of a skilled technician. As equipment and the piping system are mostly manual and non-intelligent, they are not easy to use. Among other things that should be mentioned in maintenance is dust or objects accumulated on the fins of the condenser of the refrigeration circuit. When the unit is working, the fans, by creating an air flow on the surfaces of the aluminum fins, pass the dust and pollutants suspended in the air from these surfaces, which accumulate on these surfaces after a while. Also, if the unit has not been used for a long time, this happens, which leads to a decrease in the unit 's efficiency and even an error message (High Pressure Error).

[0048] By establishing an integrated hydronic flow system in a compact unit that is factory produced meet all the international standards and with a balanced size and proper weight including heat source, cooling source, domestic hot water storage tank, circuits of floor heating and snow melting and pumps, the issues and concerns mentioned above can be resolved.

[0049] Using the Smart Anti-freezing System, there will be no need to charge or drain the evaporator water as it happens every 6 months. It doesn't also need any antifreeze injection since the smart unit tracks all its components to avoid any damage. This innovation works with decreasing temperature. When the ambient air temperature sensor and antifreeze sensor find the evaporator's water temperature low or less than permitted, with the command of the control panel (PLC) or the PCB control board, even when the local power is cut off and the conditions for freezing of the evaporator water to the defined unit occur, by an emergency battery (UPS) only the hydronic circuit of the evaporator is discharged, so that the unit is not damaged in case of emergency.

[0050] Relying on the smart systems, these two systems by the monitoring and decision-making center (PEC) which is integrated, in the change of seasons, the change of mode from cooling to heating and vice versa is done automatically. This is how, in automatic mode, the system monitors the ambient temperature by a temperature sensor, and sends the necessary commands to the control equipment, including solenoid valves, variable speed three-way motorized valves, circulator pumps, pressure and temperature sensors. It will change the mode or switch automatically.

[0051] By utilizing the Auto-Elution System, water spray nozzles, placed between condensers, get filtered and they automatically remove the dirt and dust of the condensers using the propulsion mechanism. So, this process helps the system work more efficiently and reduces the number of maintenance sessions per year.

[0052] - Hydronic circuits require anti-freeze injection to avoid freezing during cold seasons:

[0053] Floor heating and snow melting circuits are also very prone to freezing, so water is mixed with some chemical solutions like Ethylene Glycol or Propylene Glycol to prevent freezing in low temperatures and in off-peak times, they drain the circuit water. However, the solution percentage and the response rate of these practices are limited. As they are inflammable and may cause corrosiveness in joints, they are avoided as much as possible.

[0054] By utilizing a Smart Anti-freeze System (SAS), the need to inject chemicals is eliminated, and the unit intelligently maintains the entire system including the hydronic circuits, even when it is inactive. - Hygienic domestic hot water supply:

[0055] Water stored in tanks is a suitable place for the growth of microorganisms and bacteria. The water temperature in these tanks is usually kept at around 50-60 degrees Celsius. The presence of Legionella bacteria in the hot water supply system is very common. This type of deadly bacteria is the cause of respiratory diseases similar to the flu, and by growing in the water storage tank and spreading through the steam and surface moisture of the water coming out of the tap, it enters the respiratory area, i.e. the lungs of humans, and finds its path for survival.

[0056] According to the articles of the World Health Organization (WHO), at temperatures of 60 degrees Celsius and above, almost all of these bacteria die, and at temperatures below 20 degrees Celsius, they remain dormant in water or moist areas. But the temperature range of about 25-45 degrees Celsius is the ideal growth range for these bacteria and they can survive without growth in the temperature range of about 45-50 degrees Celsius. Also, stagnant water will have a double effect on the growth of these bacteria.

[0057] One of the ways to control or destroy the growth of this bacteria is by keeping water at temperatures above 51 degrees Celsius or below 20 degrees Celsius. However, it is considered a temporary and inadequate method for hospitals and children's educational centers as they cannot set the water temperature above 50 degrees Celsius in terms of safety for consumers.

[0058] Another way to deal with these bacteria is disinfection by injecting chlorine or other chemicals into the water, which is considered unsanitary for hot water consumption and its use is impossible. In water systems where it is preferred to eliminate the use of chemicals, the most effective method of preventing the growth of bacteria is the use of ultraviolet light by a UV lamp, in this system, a waterproof housing is installed, which is a transparent sheath made of quartz or HDPE plastic. In this type of system, an electric lamp is used, which is specifically designed to produce radiation, especially of the UV-C type, which has germicidal properties for disinfection. This lamp is designed to emit almost monochromatic UV-C light in the optimal range for absorption by nucleic acids in the cells of microorganisms. This method is a noncontact disinfection system that does not affect water quality, the UV lamp is installed in a position corresponding to the possible presence of microorganisms in the hot water storage tank (lower half of the tank), by irradiating ultraviolet rays and destroying the genetic structure of bacteria, fungi and other disease microorganisms, pathogens and sensitizers to eliminate them. It can even be very effective in protecting against microbiological contamination in water and delivering sanitary water to consumers. The system procedure is simple and fast. To increase the efficiency of the lamp, it is recommended to prevent turbidity and sediment on its surface which also prevents any temperature increase and you can easily have access to the UV lamp installation chamber. By incorporating the hot water return path to recirculate it, when the user opens the faucet, thanks to this function, in addition to immediate available hot water, it prevents the growth of any microorganisms.

[0059] After installing the unit on the chassis, the soft water piping circuit (FW) produced from hardening systems, which are mostly resin (or RO equipment), should be connected to the unit, and by putting the unit on maintenance mode, water extraction All circuits are done. The filling path of the unit is equipped with a pressure reducing valve set at 2.5 bar. After the pressure gauge is installed after the pressure reducing valve shows the desired pressure of the system, the inlet valve can be closed. Therefore, it should be closed if there is a leak in any of the circuits and this valve is open. We will not notice the pressure drop of the system and the leakage, and the pressure drop of the circuit will be compensated by this route. By selecting one of the device modes, it starts working and the defined commands are applied to the control equipment and parts through the control panel (PLC).

[0060] - It is possible to turn on and off other circuits in modes 1 and 2, which are explained below.

[0061] - This system is provided in 4 different versions:

[0062] 1. Integrated Hydronic Flow System (IHF System)

[0063] 2. Integrated Hydronic Flow System with Heat Recovery

[0064] 3. Integrated Hydronic Flow System with Frost Solution

[0065] 4. Integrated Hydronic Flow System - All-Inclusive

[0066] - The temperature difference of the inlet and outlet (supply and return flows) of the evaporator circuit is predetermined.

[0067] - The temperature of the supply flow and the difference between the inlet and outlet (supply and return flows) of the condensing boiler circuit are predetermined.

[0068] - The set point temperature of the floor heating and snow melting circuit will always be lower than the set point temperature of the fan coil circuit.

[0069] - Pump Pl has 3 rounds and a variable frequency drive to change the modes of low, medium and high.

[0070] - The technical specification of all pumps according to the unit capacity and the project's needs.

[0071] - The equipment placed on the right side of the double dashed line in each circuit in drawings is a function of each project's needs, provided separately and named exclusively as a User Kit.

[0072] - The equipment placed on the right side of the double dashed line or User Kits are installed in the Internal Mechanical Panel.

[0073] - Towel dryers include the classification of the heating system. For this reason, the hot water of this circuit is provided separately from the heating circuit (fan coil / AHU) based on the principles of plumbing, whose temperature follows the temperature of the heating circuit. For optimal use, a special manifold is added to the circuit's user kit which has a branch, solenoid valve / shut-off valve and a check valve. It automatically sends the signals (orders) using the connection port placed on the PCB or PUC. Users can also manually cover the towel dryer circuit by using the conventional (traditional) system, branching off the fan coil circuits or placing it in the fan coil circuits using manual equipment.

[0074] - To activate / deactivate the towel dryer circuit, by setting up its specific user kit, by receiving the command to open / close solenoid valve U (Figure 7), it is possible to control this circuit and it is automatically closed in cooling mode. In addition, it was stated earlier that in the version of the IHF system - All-inclusive, it is possible to activate the towel dryer circuit at the same time.

[0075] - The expansion tanks Ei and E2 are built for cold and hot mode circuits, and how they work in different modes will be explained. - It is possible to make the system smart and lead (guide) the system by using PCB instead of PLC control panel.

[0076] - By contacting the BMS system, all the unit 's actions and activities including all errors are visible in the monitoring unit.

[0077] - The snow melting circuit system can be used by connecting the snow detection kit. Otherwise, SM kit connection error will be shown on the HMI display. Kit must be installed in the snow melting circuit zone so that the unit has timely detection. This kit includes a snow and ice detection sensor, an ambient temperature sensor and the command cable which consists of a plastic box or container with a screw -on lid.

[0078] - Smart Antifreeze System (SAS) principles for the evaporator are as follows: when the unit’s ambient temperature sensor shows the air temperature below 7 degrees Celsius, and the evaporator anti-freeze sensor shows the water temperature 4 degrees Celsius and below that, if the unit is working in any of the heating modes, automatically and intelligently by commanding from the control panel (PLC), by opening and closing the corresponding valves a and b, the produced hot water to the hydronic circuit of the evaporator is directed, which leads to an increase in the water temperature of the evaporator and prevents it from freezing. After the evaporator water temperature rises to 25 degrees Celsius, the unit 's operation returns to normal. At the same time, a backup power source is built in for emergency times. In other words, if the power of the unit is cut off for any reason and the condition of the evaporator water freezes (detected by the Anti-Freeze sensor), only the water in the shell of evaporator is drained by the solenoid valve of the drain circuit under the evaporator (h). The error message related to the emergency evacuation of the evaporator is warned on the display (HMI).

[0079] - Smart Antifreeze System (SAS) principles for the boiler is that when the internal temperature sensor detects the water temperature 4 degrees Celsius or below that, the command to turn on is issued to prevent freezing. At the time of gas failure, by opening the drain valve on the boiler, the water in the internal circuit of the boiler and a part of the water in the primary circuit are drained.

[0080] - Smart Antifreeze System (SAS) principles for the floor heating circuit are as follows: if the floor heating circuit is off and the ambient temperature sensor shows the DB air temperature below 12 degrees Celsius, alert of freezing the heating circuit will be shown on-screen display (HMI) and automatically starts its hydronic circuit and monitors the return water temperature. If the temperature is 5 degrees Celsius or less, the unit keeps the temperature of the return water at 10-12 degrees Celsius and takes care of monitoring it with water circulation, and after the ambient temperature rises above 12 degrees Celsius, the circuit turns it off. If the floor heating circuit smart control option is unchecked, only the floor heating circuit freeze alert message is warned on the display (HMI).

[0081] - Smart Antifreeze System (SAS) principles for the snow melting circuit are as follows: if the snow melting circuit is turned off and the ambient temperature sensor of the snow detection kit shows the DB air temperature below 10 degrees Celsius, the message of freezing the snow melting circuit is alerted on the display (HMI) and the hydronic circuit automatically starts and monitors the return water temperature. If the temperature is 5 degrees Celsius or less, the unit keeps the temperature of the return water at 10-12 degrees Celsius and takes care of monitoring it with the water circulation, after the ambient temperature rises above 10 degrees Celsius, the circuit turns it off. If the smart control option of the snow-melting circuit is unchecked. When this condition occurs, only the snow melting circuit freeze alert message is warned on the display (HMI).

[0082] - Smart Antifreeze System (SAS) principles for the heating circuit of the fan coil / AHU are as follows: if the heating circuit is off and the ambient temperature sensor on the unit shows the air temperature below 10 degrees Celsius, alert of freezing the heating circuit will be shown on display (HMI) and automatically starts its hydronic circuit and monitors the return water temperature. If the temperature is 4 degrees Celsius or less, the unit keeps the temperature of the return water at 10-12 degrees Celsius and takes care of monitoring it with water circulation, and after the ambient temperature rises above 10 degrees Celsius ,the circuit turns it off. If the heating circuit smart control option is unchecked, only the heating circuit freeze alert message is warned on the display (HMI).

[0083] - Auto Elution System (AES) principles: By controlling the temperature and pressure of the liquid line by sensors (Liquid line temperature and pressure sensors), if the temperature and pressure parameters are higher than the set limit for this circuit, the system detects that the condenser efficiency has decreased. At this stage, by turning off the refrigeration cycle, the automatic cleaning system is activated to clean the condenser surfaces covered with layers of dust by high-pressure purified water spray. The mechanism of this system is linear reciprocating movement. In such a way that the spray nozzles are installed on a horizontal shoulder in the inner part of the condensers on a rail for vertical linear movement, and with a constant speed electric motor, their linear thrust is applied for the washing operation. The water is supplied by a branch circuit from the city water which is filtered with a fiber filter (PP) water particles up to 5 microns and with a polyphosphate filter with a cartridge containing replaceable polyphosphate crystals, from the formation of water deposits (from including calcium and magnesium) and corrosion of suspended metal particles are prevented. This keeps the health of the fins and condenser tubes and water spray nozzle needles.

[0084] - The working program of the system is such that it disables the refrigeration cycle with automatic detection to wash the condenser surfaces. Water flows to the filters by the AE solenoid valve (NC; Normally Closed) and is sprayed from inside the condenser to the fins with the pressure and spray angle adjusted through the spray nozzles. By using an electric motor, the nozzles travel a vertical path back and forth for washing. After that, the AE solenoid valve is closed and the nozzles are moved to the lowest point of their movement axis so that the spray nozzle needles are not damaged or blocked during operation. Moments after the end of the work, the refrigeration cycle starts to work again. This interruption at the start of the work is for the gravitational fall of water on the fins' surfaces to prevent surface evaporation on the fins and to eliminate the concern about possible and minimal sediment formation. Also, if the refrigeration cycle of the unit has not been used for a long time, there is a possibility of dust accumulation, especially in areas with dry weather conditions and strong winds. Therefore, before activating and starting the refrigeration cycle, this system first cleans the condenser surfaces, and then the unit is ready to work.

[0085] - The pressure reducing valve is used to adjust the pressure of the passing fluid towards a certain circuit. The way it works is that by twisting the threaded member and selecting the required pressure number that is included on the valve, it increases and decreases the passage of water and causes the water pressure entering the unit to be adjusted and to prevent pressure fluctuations or high pressure from supply systems.

[0086] - Hydro-block (Multilateral Hydro-block) is a form of several mechanisms and processes in a metal piece to deal with various activities of the system by maintaining efficiency, less space requirement, increasing assembly speed, reducing production process costs and optimizing service and maintenance. Its components include branches with different sizes, a solenoid valve, a shut-off valve, a variable speed motorized three-way valve, a drain shut-off valve, a spring check valve and a covered place for installing the sensor and temperature or pressure gauge.

[0087] - A motorized three-way valve has three paths, path (A) is connected to the hot water production path and path (B) is connected to the return water path. Path (AB) consists of a certain amount of current from path (A) and path (B). The way it works is that it receives the commands determined by the control panel (PLC) by an electric actuator and by reducing and increasing the pitch of the threads, it changes the amount of current passing through the path (AB), which the flow is a certain amount of the flow of those two paths.

[0088] - A Solenoid valve is a flow shut-off valve that receives and executes flow shut-off commands from the control panel (PLC) through an actuator.

[0089] - The water temperature that can be provided for hydronic circuits with a certain maximum flow is as follows; up to 5 degrees Celsius for cooling, and taking into account the simultaneous use of several circuits of heated water that occurs in heating mode; Up to 70°C for heating, up to 55°C for floor heating, up to 52°C for snow melting, provision of hygienic domestic hot water up to 60°C.

[0090] - Pipe sizing is provided in inches and is based on cooling load capacity range of 18 tons of refrigeration (RT) and a total heating capacity range of 115 kilowatts (KW). The capacity range of the plate heat exchanger for preheating of domestic hot water is 10 kilowatts (KW).

[0091] - The water vapor (steam) inside the combustion process, passing between the pipes of the hot water production circuit, reaches the dew point and forms water droplets that are acidic and corrosive (PH ~2). Condensed water formed during combustion is directed to the drain pipe by a drain hose and a steam trap or siphon. Therefore, a PP-type pipe is used for the route, which the user must connect to a separate drain well (along with a neutralizing tank according to local standards).

[0092] - The capacity of the hot water storage tank is 500 liters and the capacity of the hydraulic separator (HS) is 5 liters .The volume of the expansion tank for cooling circuit is 60 liters and for heating circuit is 50 liters .The volume of the expansion tank mounted on the system in the heating mode of the fan coils / AHU or with other circuits is equal to the sum of these two due to the type of circuit.

[0093] - The unit has different dimensions and weights according to the variety of capacities. Approximate dimensions based on the mentioned capacities are equivalent to 2200 mm depth, 2100 mm height and 2200 mm width. The approximate net weight of this capacity is 1000 kg. - Parts and Components of the Unit:

[0094] 1. Scroll Compressor

[0095] 2. Fin and Tube Condenser

[0096] 3. Shell-and-tube Evaporator

[0097] 4. Axial Fan

[0098] 5. Filter Dryer

[0099] 6. Liquid Refrigerant Receiver

[0100] 7. Expansion Valve

[0101] 8. Sight Glass

[0102] 9. Safety Valve

[0103] 10. Automatic Air Vent

[0104] 11. Liquid Refrigerant Line Solenoid Valve

[0105] 12. Electrical panel equipped with PLC control panel or PCB control board with related equipment

[0106] 13. Pressure Switch

[0107] 14. Pressure and Temperature Sensors (NTC and PT)

[0108] 15. Anti-Freeze Sensor

[0109] 16. Condensing Boiler

[0110] 17. Modular Fan - for condensing boiler air supply

[0111] 18. Modular Valve for Condensing Boiler Gas consumption

[0112] 19. Hydraulic Separator (Low Loss Header)

[0113] 20. Multilateral Hydro-block

[0114] 21. User Kit (for each circuit)

[0115] 22. Circulator Pumps

[0116] 23. Pre-heating plate heat exchanger for domestic hot water supply

[0117] 24. Plate heat exchanger for snow melting circuit (Hs)

[0118] 25. Coiled Hot Water Storage Tank

[0119] 26. UV Lamp

[0120] 27. Pipe and Body Thermal Insulation

[0121] 28. Ambient Temperature Sensor

[0122] 29. Uninterruptible Power Supply (UPS)

[0123] 30. Snow Detection Kit

[0124] 31. Motorized Three-way Valve with variable speed

[0125] 32. Solenoid Valve for hydronic circuits

[0126] 33. Shut-off Valve for hydronic circuits

[0127] 34. Check Valve

[0128] 35. Pressure and Temperature Safety Valve

[0129] 36. Pressure Reducing Valve

[0130] 37. Drain Shut-off Valve

[0131] 38. Pressure and Temperature Gauges

[0132] 39. Pressure Safety Valve

[0133] 40. Thermometer 41. Closed Expansion Valve

[0134] 42. Gas Filter

[0135] 43. Gas Supply Shut-off Valve (On / Off)

[0136] 44. Magnetic Filter (dirt separator)

[0137] 45. Strainer

[0138] 46. Drain Pipe Line

[0139] 47. Programming for Smartification

[0140] 48. Smart Anti -freezing System (SAS)

[0141] 49. Auto-Elution System (AES)

[0142] 50. Fiber pretreatment filter (PP)

[0143] 51. Polyphosphate filter with replaceable cartridge

[0144] 52. Electric Motor

[0145] 53. Pulley and Belt

[0146] 54. Water spray nozzles and branch collector

[0147] 55. Plastic water hose

[0148] 56. Human Machine Interface (HMI)

[0149] 57. Metal Body-bolts

[0150] 58. Internal Mechanical Panel

[0151] 59. PEX-AL-PEX piping

[0152] 60. Copper Piping

[0153] 61. Coupling / press connections for piping circuit

[0154] 62. Plastic Chimney

[0155] The different modes of the system (version of integrated hydronic flow system (IHF system)) are as follows and the mechanical circuit shows their operation as shown in Figure 3:

[0156] 1. Cooling Mode

[0157] 2. Heating Mode

[0158] 3. Domestic Hot Water Mode

[0159] Mode 1:

[0160] 1-1: Cooling On

[0161] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are opened.

[0162] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of a condensing boiler and hydraulic separator are closed.

[0163] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, the order to form the B-AB circuit is defined.

[0164] Variable speed pump Pi is off.

[0165] The P2 pump is turned on and is continuously working, (unless the whole unit is turned off) Pi pump is off.

[0166] P4 pump is off.

[0167] Ps pump is off.

[0168] The E2 expansion tank in the fan coil and evaporator circuit balances the pressure of the entire system.

[0169] Chilled water is produced by the refrigeration cycle and is circulated by the P2 pump in the entire circuit of the consumer units. The ‘cc’ temperature sensor monitors the set point and gives the refrigeration circuit an off / on command. The flow switch installed on the return line to the evaporator and the anti-freeze sensor installed inside the evaporator also prevent possible freezing of the evaporator.

[0170] 1-2: Cooling On - Domestic Hot Water On

[0171] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are opened.

[0172] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are closed.

[0173] Solenoid valve ‘e’ is permanently open in this state.

[0174] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, the order to form the B-AB circuit is defined.

[0175] The spring check valve ‘i’ prevents the possible flow of hot water back to the hydraulic separator (HS).

[0176] The spring check valve ‘k’ prevents the possible return flow of cold water to the hydraulic separator (HS).

[0177] The variable speed pump Pi is on and is continuously working, (unless the whole unit is turned off)

[0178] The P2 pump is on and continuously working, (unless the whole unit is turned off)

[0179] P3 pump is off.

[0180] P4 pump is off.

[0181] The Ps pump is on and continuously working, (unless the whole unit is turned off)

[0182] The expansion tank Ei in the circuit of the coil tank and boiler and the expansion tank E2 in the circuit of fan coil and evaporator balance the pressure of the whole system.

[0183] The chilled water by the refrigeration cycle continues to work like the cooling-only type.

[0184] The low-speed command is applied to pump Pi. The way the boiler works is in the form of a variable range due to the modular gas valve and variable air flow fan. It means that it is a consecutively, the water going back and forth to the boiler is brought to the defined temperature by the temperature sensor installed in the boiler. Then, by selecting the set point for domestic hot water, sensor number ‘2’ sets that number as the basis and orders the condensing boiler to decrease / increase the temperature or turn it off / on. Water is the heat transfer fluid in the circuit of the copper coil tank and the boiler, and is heated by the boiler and circulated by the Pi pump. In this stage, heat is transferred from the copper coil to the domestic cold water inside the tank and domestic hot water is produced. The boiler determines the thermal flux (flame rate) based on the temperature difference of the water.

[0185] The duty of the Ps pump is to provide domestic hot water for the entire cycle. In this way, it circulates water in the piping circuit from the domestic hot water storage tank to the last consumer unit (faucets) so that domestic hot water is continuously and instantly available for the consumer / sanitary units and it avoids wasting water and delay in receiving hot water.

[0186] Mode 2:

[0187] 2- 1 : Heating On

[0188] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0189] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are opened.

[0190] The Solenoid valve ‘e’ closes.

[0191] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, the order to form the B-AB circuit is defined.

[0192] The variable speed pump Pi is on and continuously working, (unless the whole unit is turned off)

[0193] The P2 pump is turned on and continuously working, (unless the whole unit is turned off)

[0194] P3 pump is off.

[0195] P4 pump is off.

[0196] Ps pump is off.

[0197] The expansion tank Ei in the circuit of the boiler and hydraulic separator (HS) and the expansion tank E2 in the circuit of the fan coil and hydraulic separator (HS) balance the pressure of the entire system.

[0198] The refrigeration cycle is turned off. Medium speed command is applied to pump Pi. By selecting the set point for the heated water, sensor number ‘ 1 ’ bases that number and instructs the condensing boiler to decrease / increase the temperature or turn it off / on. The water is the heat transfer fluid in the circuit of the boiler and the hydraulic separator (HS) and is heated by the boiler and circulated by the Pi pump. The purpose of using a hydraulic separator (HS) is to balance the temperature and pressure between the primary circuit (thermal boiler) and the secondary circuit (fan coils / AHU circuit). Also, serious damage to the boiler is one of the main consequences of this incident .Meanwhile ,the P2 pump circulates water in the circuit of the fan coils / AHU and the hydraulic separator (HS). This method causes these two fluids of different temperatures to be mixed together in the hydraulic separator tank and directed to the circuit of the fan coils and the boiler with a balanced temperature and pressure. The hydraulic separator (HS) has an automatic air vent on top to evacuation the vapors in the circuits and is equipped with a shut-off valve to drain the sediments collected at the bottom of the hydraulic separator. It should also be noted that due to the temperature difference in the heatingsystems, the system is more unbalanced in terms of pressure and a larger volume difference occurs in the system. For this reason, the design of the circuit has been done in such a way that, depending on the need, by changing the mode in the operation of the unit at any time, the nominal volume of the expansion tank is needed for the system, so that the system can function properly and have a long life, away from damages.

[0199] 2-2: Heating On - Floor Heating On

[0200] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0201] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are opened.

[0202] Solenoid valve ‘e’ closes.

[0203] Motorized three-way valve ‘f related to the snow melting circuit ,the order to form the B-AB circuit is defined.

[0204] Motorized three-way valve ‘g’ related to the floor heating circuit ,the order to form the A-AB circuit is defined.

[0205] The variable speed pump Pi is on and is continuously working (unless the whole unit is turned off).

[0206] The P2 pump is turned on and is continuously working, (unless the whole unit is turned off)

[0207] The P3 pump is on and is continuously working, (unless the whole unit is turned off)

[0208] P4 pump is off.

[0209] Ps pump is off.

[0210] The expansion tank Ei in the circuit of the boiler , hydraulic separator (HS), floor heating and the expansion tank E2 in the circuit of the fan coil and hydraulic separator (HS) balance the pressure of the entire system.

[0211] Medium speed command is applied to pump Pi. By selecting the set point for heated water , sensor number ‘ 1 ’ and for floor heating , sensor number 3 sets it as a base. Sensor number ‘ 1 ’ instructs the condensing boiler to decrease / increase the temperature or turn it off / on .Water is the heat transfer fluid in the circuit of the boiler and the hydraulic separator (HS) and is heated by the boiler and circulated by the Pi pump. The P2 pump also circulates water in the circuit of the fan coils / AHU and the hydraulic separator (HS). Simultaneously with the P2 pump, the P3 pump circulates the hot water in the floor heating circuit. In the floor heating circuit, the temperature of the floor is very important for the comfort level and heat dissipation. For this reason, the working principles of this circuit to achieve a regulated temperature are as follows: by measuring the temperature of the return water by the ‘bb’ temperature sensor, the flow rate of the produced hot water and return water are adjusted and mixed by the variable speed motorized three-way valve in a way that the set temperature is obtained by the sensor number ‘3’ which is installed in the floor heating supply line (FHS). In other words, this motorized three-way valve plays the role of a bypass circuit in most cases to prevent the increase or decrease of the temperature of the floor heating circuit.

[0212] 2-3: Heating On - Snow Melting On

[0213] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0214] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are opened.

[0215] Solenoid valve ‘e’ closes.

[0216] Motorized three-way valve ‘f related to the snow melting circuit, the order of forming the A- AB circuit is defined.

[0217] Motorized three-way valve ‘g’ related to the floor heating circuit is defined by the order of B- AB circuit formation.

[0218] The variable speed pump Pi is on and is continuously working, (unless the whole unit is turned off)

[0219] The P2 pump is turned on and is continuously working, (unless the whole unit is turned off)

[0220] P3 pump is off.

[0221] The P4 pump is on and continuously working, (unless the whole unit is turned off)

[0222] Ps pump is off.

[0223] The expansion tank Ei in the circuit of the boiler, hydraulic separator (HS), snow melting and the expansion tank, E2 in the circuit of the fan coil and hydraulic separator (HS) balances the pressure of the whole system.

[0224] Medium speed command is applied to pump Pi. By selecting the set point for heated water, sensor number ‘ 1 ’ and for the snow melting circuit, sensor number ‘4’ sets it as a base. Sensor number ‘ 1 ’ instructs the condensing boiler to decrease / increase the temperature or turn it off / on. Water is the heat transfer fluid in the boiler and hydraulic separator (HS) circuit and is heated by the boiler and circulated by the Pi pump. The P2 pump also circulates water in the circuit of the fan coils or aerators and the hydraulic separator (HS). Simultaneously with the P2 pump, the P4 pump circulates the hot water in the snow melting circuit. In the snow melting cycle, the temperature of the flow is very important due to the stresses on the surfaces of the ground layers and the heat dissipation. For this reason, the working principles of this circuit to achieve a regulated temperature are as follows: by measuring the temperature of the return water by the ‘aa’ temperature sensor, the hot water flow rate and the return water flow rate is adjusted and mixed by the variable speed motorized three-way valve that the set temperature is obtained by sensor number ‘4’ which is installed in the snow melting supply line (SMS). In other words, this three-way motorized valve plays the role of a bypass circuit in most cases to prevent the increase or decrease of the temperature of the snow -melting circuit.

[0225] 2-4: Heating On - Domestic Hot Water On

[0226] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0227] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are opened.

[0228] Solenoid valve ‘e’ opens.

[0229] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, the order to form the B-AB circuit is defined.

[0230] The variable speed pump Pi is on and is continuously working, (unless the whole unit is turned off)

[0231] The P2 pump is turned on and is continuously working, (unless the whole unit is turned off)

[0232] P3 pump is off.

[0233] P4 pump is off.

[0234] The Ps pump is on and is continuously working, (unless the whole unit is turned off)

[0235] The expansion tank Ei in the copper coil of the tank , boiler and hydraulic separator (HS) and the expansion tank E2 in the circuit of the fan coil and hydraulic separator (HS) balance the pressure of the entire system .

[0236] The high-speed command is applied to pump Pi. By selecting the set point for heated water, sensor number ‘ 1 ’ and for the domestic hot water circuit, sensor number ‘2’ sets that number as the basis. The heat transfer fluid , water ,in the circuit of the boiler, copper coil and hydraulic separator (HS) is circulated by pump Pi. In this case, the following parameters occur: a) If sensor ‘ 1 ’ does not reach the temperature and sensor ‘2’ does not reach the temperature; The valves ‘d’ and ‘e’ are commanded to open. Pump Pi receives a high-speed command. b) If sensor ‘ 1’ does not reach temperature and sensor ‘2’ reaches temperature; Then, valve ‘e’ is commanded to close. Pump Pi receives a medium-speed command. c) If sensor ‘ 1 ’ reaches the temperature and sensor ‘2’ does not reach the temperature; Then, valve ‘d’ is commanded to close. Pump Pi receives a low-speed command. d) If sensor ‘ 1’ reaches temperature and immediately sensor ‘2’ reaches temperature; Then, valve ‘d1is commanded to close. Pump Pi receives a low-speed command .The boiler determines the heat flux (flame rate) based on the difference temperature water. e) If sensor ‘2’ reaches temperature and immediately sensor ‘ 1’ reaches temperature; Then, valve ‘e’ is commanded to close. Pump Pi receives a medium-speed command .The boiler determines the heat flux (flame rate) based on the difference temperature water. 2-5: Heating On - Domestic Hot Water On - Floor Heating On - Snow Melting On

[0237] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0238] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of the condensing boiler and hydraulic separator (HS) are opened.

[0239] Solenoid valve ‘e’ opens.

[0240] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, and the order to form the A-AB circuit is defined.

[0241] The variable speed pump Pi is on and is continuously working, (unless the whole unit is turned off)

[0242] The P2 pump is turned on and is continuously working, (unless the whole unit is turned off)

[0243] The P3 pump is on and is continuously working, (unless the whole unit is turned off)

[0244] The P4 pump is on and is continuously working, (unless the whole unit is turned off)

[0245] The Ps pump is on and is continuously working, (unless the whole unit is turned off)

[0246] Expansion tank Ei in the boiler circuit, coil of the tank, hydraulic separator (HS), floor heating, snow melting and expansion tank E2 in the circuit of fan coil and hydraulic separator (HS) balances the pressure of the whole system.

[0247] The high-speed command is applied to pump Pi. By selecting the set point for hot water, sensor number ‘ 1 ’ and for domestic hot water circuit, sensor number ‘2’, for floor heating circuit, sensor number ‘3’, for snow melting circuit, sensor number ‘4’, based on that number. The heat transfer fluid; water, is circulated in the circuit of the boiler, coil of the tank and hydraulic separator (HS) by Pi pump. At the same time, pumps P2, P3, P4, Ps continue to operate and valves ‘e’, ‘d’, ‘g’, ‘f apply commands according to programming from the control panel (PLC) or PCB.

[0248] Mode 3 : Domestic Hot Water On

[0249] Solenoid valves ‘a’ and ‘b’ related to the chiller evaporator circuit are closed.

[0250] Solenoid valves ‘c’ and ‘d’ related to the branch circuit of a condensing boiler and hydraulic separator are closed.

[0251] Solenoid valve ‘e’ opens.

[0252] The motorized three-way valves ‘f and ‘g’ related to the snow melting circuit and the floor heating circuit, the order to form the B-AB circuit is defined.

[0253] The variable speed pump Pi is on and is continuously working (unless the whole unit is turned off).

[0254] P2 pump is off. Pi pump is off.

[0255] P4 pump is off.

[0256] The Ps pump is on and is continuously working, (unless the whole unit is turned off)

[0257] The expansion tank Ei in the copper coil circuit of the tank and the boiler balances the pressure of the entire system.

[0258] The low-speed command is applied to pump Pi. By selecting the set point for the hot water, sensor number ‘2’ sets that number as the basis and gives the condensing boiler the command to decrease / increase the temperature or turn it off / on. T Water is the heat transfer fluid in the circuit of the copper coil tank and the boiler and circulated by the Pi pump. In this step, heat is transferred from the copper coil to the cold water that is inside the tank, so domestic hot water is produced. The boiler determines the heat flux (flame rate) based on the temperature difference of the water going back and forth, and besides this ,the report of sensor number ‘2’ is also monitored. Also, the Ps pump continues to operate.

[0259] In the version of the Integrated Hydronic Flow system (IHF system), the compressor discharge (DL) goes directly to the condenser and the whole system continues its routine operation. (Figure 3)

[0260] In the version of the Integrated Hydronic Flow system with heat recovery (IHF system; Heat Recovery), during the operation of the refrigeration cycle, the heat of the compressor discharge (DL) is directed to a plate heat exchanger to transfer the heat of the hot gas refrigerant to the passing domestic cold water and is directed by the heat exchanger. A gas-water type plate heat exchanger that is placed in the domestic cold water inlet. The heat of the discharge gas refrigerant is transferred to the cold water that is directed to tank. By using the heat produced by the refrigeration cycle, before it is dispersed and wasted, the water is preheated and transferred to the domestic hot water storage tank. After that, the refrigerant is directed to the condenser to go through its refrigeration cycle. (Figure 4)

[0261] Integrated Hydronic Flow system, Frost Solution version (IHF system; Frost Solution); This possibility can be offered to consumers who, in their cases, feel the decisive and urgent need for antifreeze liquid in the snow melting circuit. The function of this system is similar to the original version and the difference is in the snow melting circuit. Its main parts include a plate heat exchanger as a heat transfer medium and a circulator pump, which we know as the primary pump of the snow melting circuit. The description of its function is explained as follows: The produced hot water in the boiler (which was circulated by Pi in the circuit of the hydraulic separator (HS) and the boiler), is circulated by Ppin the circuit of the plate heat exchanger Hsand the hydraulic separator (HS). Meanwhile, the P4 pump transfers heat by circulating water and chemical solution of the snow melting circuit and indirectly heats the solution of the snow melting circuit. Also, by monitoring the return temperature sensor ‘aa’ and based on the heat flux of the heat exchanger that is defined to the system, the flow rate is determined and adjusted by the motorized three-way valve to obtain the set point of sensor number ‘4’ . (Figure 5)

[0262] Integrated Hydronic Flow system; All-inclusive (IHF system; All-inclusive); as mentioned before is designed to provide cooling and heating of the fan coil circuit or AHU at the same time; in other words, by creating inlet / outlet for cooling and inlet / outlet for heating separately, it is possible that at any moment, some of the units provide cooling and many others, by receiving heated water, without interrupting other circuits, i.e. floor heating, hygienic domestic hot water and snow melting, provide heating system for other units, in this system, the circulator pump for the hot water circuit, i.e. P2 pump ,and the chilled water circuit, i.e. Pe pump, are also installed separately and with the addition of the “dd” temperature sensor, the return water temperature of the separate evaporator circuit is controlled. Also, the expansion tank E2 in the circuit of the fan coil and evaporator balances the pressure of the entire system and the expansion tank Ei in the circuit of the boiler, copper coil tank, hydraulic separator (HS), floor heating, snow melting, according to the selection of modes, the total pressure of that selective system balances. (Figure- 6)

[0263] Figures, diagrams and charts

[0264] Figure 1 is the tree diagram of different system output modes.

[0265] Figure 2 shows different modes of operation circuit of the Integrated Hydronic Flow system; Heat Recovery.

[0266] Figure 3 shows the flow diagram for the Integrated Hydronic Flow system.

[0267] Figure 4 shows the flow diagram for the Integrated Hydronic Flow system; Heat Recovery.

[0268] Figure 5 shows the flow diagram for the Integrated Hydronic Flow system; Frost Solution.

[0269] Figure 6 shows the flow diagram for the Integrated Hydronic Flow system; All-inclusive.

[0270] Figure 7 represents the independent circuit of the towel dryer, which applies to all versions.

[0271] A clear and precise statement of the advantages of the claimed invention over previous inventions

[0272] - Compact design

[0273] - Fully automatic system

[0274] - Automatic seasonal mode

[0275] - Providing the entire system of cooling and heating facilities in one unit and available - Saving space and not occupying the internal and functional spaces of any structure compared to conventional mechanical / boiler rooms.

[0276] - Increasing the comfort level of the people due to the possibility of installing the device outdoor and in unused spaces of the project compared to conventional installation systems.

[0277] - Monitoring and control of the whole system by intelligent program and control panel (PLC) and control equipment

[0278] - Advanced control of pumps

[0279] - Reduction of using multiple parts and equipment and consequent reduction of costs

[0280] - Significant reduction in energy and resource consumption

[0281] - Reduction of heat loss compared to conventional installation systems

[0282] - Saving time and simplifying implementation

[0283] - Plug and play

[0284] - Improving the safety of the structure and reducing the risk caused by earthquakes

[0285] - Smart Anti-freeze System (SAS)

[0286] - Auto Elution System (AES) to increase the cooling system efficiency

[0287] - Use of preheating domestic hot water system as heat recovery of the refrigeration cycle

[0288] - Significant performance with no temperature limitation in the cold season compared to heat pump systems

[0289] - No need to discharge / charge the hydronic circuit of the evaporator to prevent freezing even during power outages

[0290] - No need to charge chemical anti-freeze in all circuits

[0291] - No need for additional parts or auxiliary equipment for operation

[0292] - Reducing the Need for Leak Detection Systems compared to DX systems

[0293] - Quieter operation compared to DX systems thanks to water distribution in pipes and fan coils

[0294] - User kit installation chamber (Internal Mechanical Panel)

[0295] - Optimizing installation, commissioning, service and maintenance costs and their frequency

[0296] - Reducing installation time due to integration and pre-installation of parts (user kit)

[0297] - Connection of pipes and being ready-to-use

[0298] - Regular and easy installation due to the possibility of piping from three sides of unit

[0299] - Ability to cover the maximum flow rate of water; Up to 5°C for cooling, up to 70°C for heating, up to 55 °C for floor heating, up to 52°C for snow melting, up to 60°C for hygienic domestic hot water supply, simultaneously with various temperature control options

[0300] - The possibility of creating an independent and automatic towel dryer circuit

[0301] - The possibility of continuous circulation of hygienic domestic hot water

[0302] - Installing a UV lamp with a compartment to provide hygienic domestic hot water

[0303] - Reducing the parameters of phase 1 and 2 of the project's mechanical and electrical facilities

[0304] - Guaranteed quality and basic construction compared to conventional installation systems

[0305] - The ability to be modularized according to the needs of the project

[0306] - The flexible design and modular capabilities enable efficient management of various installation phases

[0307] - The ability to connect to the intelligent building management system (BMS) Invention Applications

[0308] The construction and production of this system within the framework of a unit based on standards and using it as a central air conditioning unit of any structure or site instead of compression or absorption refrigeration cycle units (Chiller), direct expansion cycle units (DX), Variable Refrigerant Flow units (VRF), wall-mounted or floor-type water heaters, wall-mounted or floor-type combi boiler, gas or diesel engine room equipment with condensing or noncondensing boilers and mechanical room equipment.

[0309] Industrial Application of the Invention

[0310] This system belongs to the category of air conditioning and it is used for providing cooling, heating, hygienic domestic hot water, floor heating and snow melting by hydronic method and by connecting piping circuits to the relevant ports on the unit / s. This service can be used in residential, office, commercial, industrial and hospital buildings to provide these facilities.

Claims

AMENDED CLAIMS received by the International Bureau on 22 February 2025 (22.05.2025)Claim 1:Integrated Hydronic Flow system comprising a heating and cooling system in the form of a compact unit with metal structure, wherein the air-cooled compression refrigeration cycle and the condensing boiler cycle are used to produce chilled water and hot water, powered by electricity and natural gas, that simultaneously provide cooling, heating, floor heating, snow melting, and hygienic domestic hot water for sanitary units. The system comprises an electrical panel equipped with PLC control panel or PCB control board with related equipment, a Human Machine Interface (HMI), Circulator Pumps, a Plate Heat Exchanger for pre-heating domestic hot water, a Plate Heat Exchanger for snow melting circuit (Hs), Variable Speed Motorized Three-way Valves, Solenoid Valves, User Kits having pumps, gauges and related equipment, Internal Mechanical Panel for housing User Kits, a Snow Detection Kit, a Chemical Protection Injection Hole (CPIH), Shut-off Valves, Check Valves, a Pressure Reducing Valve, Pressure and Temperature Gauges, Thermometers, an Ambient Temperature Sensor, Pipe and Body Thermal Insulators, Multilayer and Copper Pipes, Coupling / Press / Clip Fittings for piping circuits, and the possibility of modifications for enhancement by the patent holder exists.The air-cooled compression refrigeration cycle comprises a Scroll Compressor, a Fin and Tube Condenser, a Shell and tube Evaporator, an Axial Condenser Fan, a Filter Dryer, a Liquid Refrigerant Receiver, an Expansion Valve, a Sight Glass, a Safety Valve for Refrigerant circuit, an Automatic Air Vent, a Solenoid Valve for Liquid Line, a Pressure Switch and Temperature Sensors, an Anti-Freeze Sensor, a Closed Expansion Tank.The heating cycle comprises a Condensing Boiler, a Modular Fan for air intake, a Modular Valve for gas consumption, a Hydraulic Separator, Multilateral Hydro-blocks, a Pressure Safety Valve, a Gas Filter, Gas Shut-off Valve, a Coiled Hot Water Storage Tank having a UV Lamp with dedicated enclosure and a Pressure and Temperature Safety Valve, a Closed Expansion Tank, a Magnetic Filter, a Strainer, a Plastic Chimney and a Drain Pipe Line.Smart Anti-freezing System (SAS) comprises an Uninterruptible Power Supply (UPS) battery, program, and related equipmentAuto-Elution System (AES) comprises a Pretreatment Fiber Filter, a Polyphosphate Filter with Replaceable Cartridge, an Electric Motor, a Pulley and Belt, a Water Spray Nozzles and Branch Collector, Water Hoses. wherein the compressor, executing the settings received from the PLC control panel or the PCB control board, compresses the refrigerant within the refrigeration circuit, and in the heat recovery version, first passing through the plate heat exchanger for preheating the domestic hot water, and then directing it to the condenser, after passing through the condenser and dissipating its heat via the airflow generated by the condenser fans, the refrigerant's temperature and pressure are checked by the pressure switch and temperature and pressure sensors before moving toward the liquid receiver and filter dryer; it then passes through the solenoid valve and sightglass to reach the electronic or thermal expansion valve, upon passing through this expansion valve, the refrigerant changes phase into cold liquid and circulates through the copper tubes inside the evaporator, absorbing the heat of the water circulating inside the evaporator shell, which is pumped by the circulator pump connected via copper or multilayer pipes with a filter, wherein the refrigerant, now in gas phase, is then directed back to the compressor, and its temperature is checked as well; wherein a safety valve is installed after the condenser in the circuit to prevent overpressure, ensuring that in case of emergency refrigerant release, the system is protected from damage, wherein the evaporator shell includes an automatic air vent, a solenoid valve for drain and an anti-freeze sensor, wherein the condensing boiler, upon receiving commands from the PLC control panel or the PCB control board, uses its modular fan, modular gas valve, and gas filter to generate the necessary heat to supply hot water, which, after passing through the magnetic filter, temperature sensors, and pressure and temperature gauges, is circulated by the circulator pump to the copper coil of the hot water storage tank and the hydraulic separator derived from the boiler-side Multilateral Hydro-blocks, enabling the production of domestic hot water and supplying hot water for the heating circuits / floor heating / snow melting in the secondary circuit of the hydraulic separator, wherein the condensate or moisture from the boiler due to heating water is directed through a plastic pipe to the drain line, and the exhaust gases from combustion are expelled via the plastic flue, wherein the snow melting circuit in the frost version as shown in Figure 5, having equipment that all mounted on its heat exchanger, and it has primary and secondary circuits, wherein the Chemical Protection Injection Hole (CPIH) of snow melting circuit with related equipment is designed for necessary chemical solution injection, wherein the snow melting circuit is activated by the snow detection kit, and the system is protected against overpressure / temperature by the pressure and temperature relief valves in the boiler and the pressure relief valve in the domestic hot water storage tank, wherein the hygienic domestic hot water tank is equipped with a domestic hot water recirculation circuit, a UV lamp with dedicated enclosure for providing hygienic domestic hot water in a non-contact manner, wherein the UPS battery is installed for emergencies to ensure the proper functioning of the Smart Anti-freeze System. Where in the Smart Anti-freeze System (SAS) is configured for automatically preventing freezing of the hydronic circuits using hot water or a hot gas bypass line, wherein the Multilateral Hydro-blocks are equipped with branches, strainers, solenoid valves and shut-off valves, a variable-speed motorized three-way valve, a drain shut-off valve, check valves, and sensor sleeves for thermometers and temperature sensors, wherein the temperature regulation in the floor heating and snow melting circuits is done via the motorized three-way valve, and the operation mode changes with the seasons through the opening and closing of said solenoid valves and check valves, wherein the drain shut-off valves are provided for draining water from various circuits, and two closed expansion tanks are used to maintain pressure balance, wherein the make-up water or feed water circuit is connected to the secondary circuit Multilateral Hydro-block system and inlet of evaporator via a pressure-reducing valve, a check valve, and a shut-off valve, wherein the user kits, defined by specific components, are installed in the Internal Mechanical Panel for connection to the different circuits, wherein the pre-filter fiber filter, the phosphate filter with a replaceable cartridge, the electric motor, the pulley and belt, the water spray nozzles, the branch collector, and plastic water hoses pertain to the Auto-Elution System, where in the Auto-Elution System(AES) is configured for automatically removing the dirt and dust from the condenser, wherein all components are insulated with thermal insulation, reducing surface heat loss and conduction through compact design and integration, and all system events are displayed on the Human Machine Interface.Claim 2:According to claim number 1, the production of chilled water is achieved through the refrigeration cycle circuit and the hydronic circuit. The refrigeration circuit consists of the compressor, condenser, liquid refrigerant receiver, filter dryer, liquid line solenoid valve, sight glass, electronic expansion valve, and a shell and tube evaporator with copper piping. The hydronic circuit consists of copper piping, PEX-AL-PEX multilayer piping, filters, solenoid valves, shut-off valves, and circulator pumps.Claim 3:According to claim number 1, the production of hot water is achieved through the condensing boiler cycle, which is facilitated by the piping of the condensing boiler, Multilateral Hydroblocks, circulator pumps, strainers, magnetic filters, solenoid valves of hydronic circuit, shut-off valves, check valves, variable- speed motorized three-way valves, and a hydraulic separator, using copper piping and PEX-AL-PEX multilayer piping.Claim 4:According to claim number 2, the method of chilled water production is as follows: by charging a certain amount of refrigerant into the refrigeration circuit, the compressor, powered by three- phase mains electricity, compresses the refrigerant gas and directs it as high-pressure hot gas toward the condenser. After losing its heat via the airflow generated by the condenser fans, the refrigerant moves as high-pressure liquid toward the liquid receiver. After passing through the filter dryer, the refrigerant, now in pure liquid phase, reaches the expansion valve. As it passes through this valve, it becomes low-pressure cold liquid, enters the evaporator, and absorbs the heat from the water circulating in the evaporator, thus producing chilled water. The refrigerant, now as low-pressure cool gas, is directed back to the compressor.Claim 5:According to claim number 3, hot water production for heating is done as follows: water is heated by circulating in the condensing boiler circuit and is transferred by the circulator pump to the hydraulic separator and the copper coil of the domestic hot water storage tank (primary circuit). From the hydraulic separator, the hot water is received by the separate circulator pumps of each circuit and is circulated through the heating circuits of fan coils or AHUs, the floor heating circuit, and the snow melting circuit (secondary circuits).Claim 6:According to claim number 3 or claim number 5, hot water production for domestic use is achieved by circulating hot water from the boiler in the copper coil circuit of the domestic hot water storage tank, where it exchanges heat with the cold domestic water entering the tank from the city’s plumbing system, thus producing domestic hot water. It should also be noted that in the IHF system; Heat Recovery version and during refrigeration cycle operation, the cold domestic water is first preheated by the refrigerant as it passes through a plate heat exchanger before entering the storage tank.Claim 7 :According to claim number 1 or claim number 6, the domestic hot water storage tank, equipped with a domestic hot water recirculation circuit and a UV-C lamp with dedicated enclosure (a type of quartz or food-grade plastic sleeve), disinfects the water inside the tank and the water returning from the pipes, eliminating microorganisms and bacteria without direct contact. Intermittently exposing the water in the lower section of the tank; where bacterial growth is most likely, especially during water stagnation, to ultraviolet rays prevents their growth and multiplication, ensuring the production of hygienic domestic hot water.Claim 8:According to claim number 2, the pipe connections and fittings between components and equipment are of the welded type.Claim 9:According to claim number 3, the pipe connections and fittings between components and equipment are threaded and made of brass fittings for copper pipes and coupler and press fittings for PEX-AL-PEX multilayer pipes.Claim 10:According to claim number 2, the installation position for the accumulator is provided to prevent liquid refrigerant from entering the compressor.Claim 11:According to claim number 1, this system is installed in a unit made of a welded and bolted frame and a bolted metal body, with pre-cut holes and assembly seats. It is also equipped with weather-resistant paint to withstand environmental factors.Claim 12:According to claim number 1, a space is provided within the unit for the installation of the relevant pumps and equipment before and after them, which we introduce under the exclusive name "Internal Mechanical Panel".Claim 13:According to claim number 4, temperature control is performed by NTC and PT sensors, and pressure control is performed by a pressure switch in the suction and discharge circuits of the refrigeration system's compressor.Claim 14:According to claim number 5, temperature control is carried out by NTC and PT sensors, where sensor 3 and sensor "bb" are used in the supply and return circuits of the floor heating system, sensor 4 and sensor "aa" are used in the snow melting circuit, sensor "cc" is used in the supply and return circuit of the chilled / hot water, sensor 1 is used in the supply circuit of the hydraulic separator’s secondary circuit, and a sensor installed in the boiler is used in the return circuit of the boiler water.Claim 15:According to claim number 6, the temperature of the hygienic domestic hot water produced is controlled by sensor 2.Claim 16:According to claim number 1, the pressure and temperature of the supply water in the heating / cooling circuit, floor heating, snow melting, the temperature of the hygienic domestic hot water storage tank, and the pressure and temperature of the supply and return water in the boiler circuit are displayed by pressure and temperature gauges for review.Claim 17:According to claims number 4 and number 5, all defined hot and chilled water circuits of the system are filled with soft water up to a specified pressure through the filling circuit, which is equipped with a pressure-reducing valve, pressure gauge, and check valve.Claim 18:According to claim number 1, the technical specifications of the pumps, including head, flow rate, are determined by the unit's capacity and project requirements.Claim 19According to claim number 1, two closed-type expansion tanks are provided for the hot water circuit and chilled water circuit. They are designed so that the pump / pumps operate according to their Net Positive of Suction Head (NPSH) of pumps chart. In cooling mode, one expansion tank is used, while in heating mode, two expansion tanks are employed to balance the system.Claim 20:According to claim number 1, claim number 4, claim number 5, and claim number 6, all system activities for monitoring, data control, and execution of user-selected operation methods are performed by a newly developed and dedicated program under the supervision of the Programmable Logic Controller (PLC). This capability can also be carried out by the control board (PCB) as an alternative member.Claim 21:According to claim number 20, system activities and the execution of user commands are displayed in (at least) two world languages through the Human Machine Interface (HMI).Claim 22:According to claim number 1, the hydro-blocks (Multilateral Hydro-block) consist of a metal body with various sizes of branches and connections, a solenoid valve, a shut-off valve, a variable- speed motorized three-way valve, a drain shut-off valve, a spring check valve, and tapped locations for the installation of temperature sensors, temperature gauges, or pressure gauges, all of which are designed and integrated specifically for this system.Claim 23:According to claim number 1, claim number 3, claim number 20, or claim number 22, the transfer of hot water to various circuits is carried out by the hydro-blocks (Multilateral Hydroblock), with command sent from the control panel (PLC) or control board (PCB).Claim 24:According to claim number 1 or claim number 23, specialized components, such as hydroblocks (Multilateral Hydro-block), system-specific pipes, clip-on and threaded connections, and coupler and press fittings, are used in the system.Claim 25:According to claim number 1, for heat recovery when the refrigeration cycle is active, the domestic water is preheated by a plate heat exchanger before entering the domestic hot water storage tank.Claim 26:According to claim number 1, during prolonged non-use or extended use of the refrigeration cycle, where data is collected from the operational hours and pressure / temperature sensors in the discharge line, the control panel (PLC) or control board (PCB) executes the predefined procedure for the Auto-Elution System (AES) by deactivating the refrigeration cycle and activating the condenser fans with reverse rotation, instructing the equipment to clean the condenser’s surfaces of dust that has accumulated on the condenser fins.Claim 27 :According to claim number 1 or claim number 26, After running the condenser fans in reverse rotation, they turn off after a few seconds, when the AE solenoid valve is opened, the spray nozzles installed along the condenser on a shaft (rod) at specific intervals spray filtered water (filtered through a pretreatment fiber filter and polyphosphate filter with a cartridge) with pressure from inside the condensers onto the fin surfaces. Using an electric motor, the nozzles are moved back and forth, covering the entire condenser surface from top to bottom and removing dust from the fins. After a few minutes, the refrigeration cycle can resume operation.Claim 28:According to claim number 1, to prevent heat loss, the pipes, components, equipment, storage tank, and the unit body are insulated with EPDM elastomeric thermal insulation according to valid standards.Claim 29:According to claim number 1, the snow detection kit consists of a plastic housing with a cover, containing snow and ice detection sensors and an ambient temperature sensor. Once installed at the snow melting circuit’s location, the snow melting circuit equipment is activated to prevent the circuit from freezing and to remove snow and ice from the surfaces.Claim 30:According to claim number 1, a Smart Anti-freezing System (SAS) has been designed and implemented to ensure that no freezing conditions occur in the hydronic circuits, including the evaporator, boiler, floor heating, snow melting, and heating systems.Claim 31:According to claim number 1, claim number 29, and claim number 30, the Smart Anti-freezing System (SAS) monitors the hydronic circuit conditions through the water pipe temperature sensors, the ambient temperature sensor on the unit, and the evaporator anti-freeze sensor. The control panel (PLC) or control board (PCB) sends commands to the hydronic circuit equipment and refrigerant circuit equipment, such as pumps, hydro-blocks (Multilateral Hydro-block), valves, and the boiler and the compressor, to resolve any defined errors.Claim 32:According to claim number 1, claim number 30 and claim number 31, the Smart Anti-freezing System (SAS) for the evaporator works as follows: when the ambient temperature sensor on the unit shows an air temperature below 7 °C or the anti-freeze sensor detects water temperature at 4°C or below, whether the unit is in heating mode or inactive, an error message is displayed on the (HMI), and the system automatically directs the hot water produced to the evaporator hydronic circuit by opening and closing the relevant valves (a and b) or directs hot gas refrigerant to the tubes of the evaporator through the bypass circuit. This raises the evaporator water temperature to 25°C, preventing freezing, after which the system resumes normal operation.Claim 33:According to claim number 30, claim number 31, and claim number 32, in the event of a power outage, the Smart Anti-freezing System (SAS) for the evaporator works as follows: when the power is cut and the anti-freeze sensor detects a freezing condition in the evaporator water, the emergency battery provides the necessary power for the control panel (PLC) or control board (PCB) to issue commands, opening the solenoid valve (h) in the drainage circuit below the evaporator so that only the evaporator shell water is drained. The error message remains in the system's memory, and a warning is displayed on the (HMI).Claim 34:According to claim number 30 and claim number 31, the Smart Anti-freezing System (SAS) for the floor heating circuit works as follows: if the floor heating circuit is off and the ambient temperature sensor on the unit body shows an air temperature below 12°C, an error message is displayed on the (HMI), and the system automatically starts the floor heating circuit by commanding the hydronic circuit equipment. If the return water temperature is 5°C or less, the system raises the return water temperature to 10-12°C, maintaining water circulation until the ambient temperature rises above 12°C, after which the circuit returns to the off state.Claim 35:According to claim number 29, claim number 30, and claim number 31, the Smart Anti-freezing System (SAS) for the snow melting circuit works as follows: if the snow melting circuit is off and the ambient temperature sensor in the snow detection kit shows an air temperature below 10°C, an error message is displayed on the (HMI), and the system automatically starts the snow melting circuit by commanding the hydronic circuit equipment. If the return water temperature is 5°C or less, the system raises the return water temperature to 10-12°C, maintaining water circulation until the ambient temperature in the circuit rises above 10°C, after which the circuit returns to the off state.Claim 36:According to claim number 30 and claim number 31, the method of the Smart Anti-freezing System (SAS) for the heating circuit (fan coil / AHU) works as follows: if the heating circuit is off and the ambient temperature sensor on the unit body detects an air temperature below 10°C, an error message is displayed on the HMI screen, and the system automatically starts the heating circuit by commanding the hydronic circuit equipment. If the return water temperature is 4°C or less, the system raises the return water temperature to 10-12°C as per the heating mode operation, and maintains water circulation until the ambient temperature rises above 10°C, after which the circuit is returned to the off state.Claim 37:According to claim number 30, if for any reason the boiler's internal water temperature sensor detects the water temperature at 4°C or below, the boiler will receive and execute the command to turn on, to prevent freezing.Claim 38:According to claim number 37, in the event of a gas outage, if the boiler’s internal water temperature sensor detects a drop in water temperature to 4°C or below, the drain shut-off valve on the boiler will receive and execute the command to drain the water from the boiler.Claim 39:According to claim number 1, the entire hydronic circuit and the domestic hot water storage tank are protected against overpressure (6 bar or more) by a pressure safety valve. The condensing boiler is protected against excessive pressure and temperature (6 bar or more, 85°C or higher) by a pressure and temperature safety valve. In other words, the entire system is protected by electronic and mechanical safety mechanisms.Claim 40:According to claim number 1, the system is offered in four versions:• Integrated Hydronic Flow System (IHF system)• Integrated Hydronic Flow System with Heat Recovery (IHF system; Heat Recovery)• Integrated Hydronic Flow System with Frost Solution (IHF system; Frost Solution)• Integrated Hydronic Flow System All-inclusive (IHF system; All-inclusive)Claim 41:According to claim number 1, adding, removing, or relocating other technologies, circuits, or additional features and equipment to improve, optimize, and enhance the system, as well as offering the system in other versions under different titles or as a combined version, is feasible and permissible for the patent holder. However, any replication or modification by others, even if minimal, is considered illegal and falls under the scope of patent law, and is not permitted without the explicit consent of the patent holder.Claim 42:According to claim number 1, claim number 20, claim number 40, the air-cooled compression refrigeration system is used for cooling by producing chilled water, and the fossil fuel thermal cycle is used for heating by producing hot water for the fan coil / AHU circuit, floor heating, snow melting circuit, and the hygienic domestic hot water storage tank with a UV Lamp with dedicated enclosure for hygienic domestic hot water production. All components and control valves, as well as instruments, are integrated and managed through custom programming and controlled by the PLC or control board (PCB), forming the Integrated Hydronic Flow system (IHF system) in four versions (Figure 3).Claim 43:According to claim number 1, claim number 40, and claim number 42, in the IHF system; Heat Recovery version, the cold domestic water is preheated by the heat from the high-pressure hot refrigerant gas discharged by the refrigeration compressor via a gas-water plate heat exchanger before being directed to the domestic hot water storage tank (Figures 2 and 4).Claim 44:According to claim number 1, claim number 40, and claim number 42, in the IHF system; Frost Solution version, by installing the primary circulator pump (Pp), plate heat exchanger (Hs), antifreeze liquid charging port (CPIH), and forming primary and secondary circuits, the injection of chemical antifreeze into the snow melting circuit is enabled (Figure 5).Claim 45:According to claim number 1, claim number 40, and claim number 42, the operation of the IHF system; All-inclusive version works as follows: with the inclusion of a domestic hot water preheating system via a heat recovery plate heat exchanger, two separate circuits are added, in addition to other circuits, to simultaneously provide both cooling and heating. One circuit provides chilled water from the evaporator, and the other supplies hot water from the heating circuit’s Multilateral Hydro-block connected to the condensing boiler. Using separate circulator pumps, the user can simultaneously activate both cooling and heating for fan coils, AHUs, or towel dryers (Figure 6).Claim 46:According to claim number 4, claim number 5, claim number 6, and claim number 20, the system is capable of simultaneously producing water at the following temperatures: Up to 5 °C for cooling Up to 70°C for heating Up to 55 °C for floor heating Up to 52°C for snow melting Up to 60°C for hygienic domestic hot water.Claim 47:According to claim number 20 and claim number 42, each of the different system modes can be selected by the user from the HMI screen.Claim 48:According to claim number 1, claim number 12, and claim number 18, the equipment located to the right of the "double dashed line" in the diagrams is presented under the exclusive name of the "user kit" for each individual circuit, with various capacities and applications.Claim 49:According to claim number 40, claim number 41, and claim number 48, supplying hot water to a separate towel dryer circuit is possible for all versions using a user kit specific to this circuit. The circuit is activated or deactivated via the solenoid valve (L), and the spring check valve (J) prevents the possible return of water in the towel dryer return circuit. The temperature of this circuit depends on the set temperature of the heating circuit (fan coil / AHU), and it is naturally closed during cooling operation (Figure 7; right side of the double dashed line).Claim 50:According to claim number 1 or claim number 49, if the user kit is not utilized, the user can manually integrate the towel dryer into the fan coil circuit of the project, considering that the valves of each towel dryer must be closed during cooling operation, except in the IHF system; All-inclusive version.Claim 51 :According to claim number 1, when switching from heating mode to cooling mode, as described in the solution section of the Invention Description file, valve (a) and valve (b) open, while valve (c) and valve (d) close. In this previously mentioned state, domestic hot water production is still possible, and valves (a), (b), and (c) are not required in the IHF system; All-inclusive version since the system can simultaneously provide both cooling and heating, and these circuits will be independently operated by their respective pumps for activation / deactivation.Claim 52:According to claim number 1, when switching from cooling mode to heating mode, as described in the solution section of the Invention Description file, valve (a) and valve (b) close, while valve (c) and valve (d) open. Valve (d) is opened and closed based on sensor 1, programming, and settings. For regulating the water temperature in the floor heating and snow melting circuits, calculations are made based on the data from sensors (aa), (bb), 3, 4, and the snow detection kit, followed by the programming and settings, after which commands are sent to valves (f) and (g). For domestic hot water production, based on the data from sensor 2, the programming and settings, calculations are made, and commands are sent to valve (e). Valves (a), (b) and (c) are not needed in the IHF system; All-inclusive version as the system can simultaneously provide both cooling and heating, with independent activation / deactivation for each circuit via their respective pumps.Claim 53:According to claim number 1, to adhere to engineering principles and automatically switch between cooling and heating modes, motorized three-way valves have been replaced with solenoid valves and spring check valves, and nearly all solenoid valves are of the “normally closed” type.Claim 54:According to claim number 1 or claim number 52, valves (d) and (e) will not be closed simultaneously in all modes related to hot water production circulation.Claim 55:According to claim number 1 or claim number 44, when pump 4 is active and the chemical solution is injected through the (CPIH) path, this solution is placed in the secondary circuit and heated by the circulating hot water in the primary circuit via pump Pp. The temperature of the solution is determined based on the integrated data from sensors (aa) and 4, the snow detection kit, the defined temperature difference between the supply and return of the heat exchanger, and the programming and settings, after which it is directed to the circuit.

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