A knot of a warm floor

Imagine coming downstairs to a cozy, warm floor after a cold morning in bed. That is the wonder of radiant floor heating, a centuries-old technology that provides warmth to homes. The "knot of a warm floor" is one of its many forms, and it is particularly effective and straightforward. We’ll explore the details of this knot, its operation, and why it might be the ideal way to keep your house warm in the winter in this post.

So just what is this "warm floor knot"? It serves as the main component of a radiant floor heating system, basically. Imagine your floor to be covered in a network of pipes or electric heating elements that gently distribute heat throughout the space. The hub where these pipes converge is called the knot, or manifold, and it controls the flow of hot water or electricity to produce a toasty feeling underfoot.

Let’s now discuss the workings of this clever system. The knot serves as the central component of a hydronic radiant floor heating system, pumping hot water from a boiler through the system’s pipe network. Heat is released by the flowing water through the pipes, rising through the flooring to warm the space from below. In contrast, electric radiant floor heating systems work with cables or mats that are positioned under the flooring. These materials produce heat when electricity flows through them, producing a comparable effect.

In your house, why choose a "knot of a warm floor"? To begin with, it provides unmatched comfort. Radiant floor heating, in contrast to conventional forced-air systems that blast hot air, offers a uniform, comfortable temperature without any drafts or cold spots. Moreover, it can be more energy-efficient in the long run because it uses lower temperatures than traditional heating techniques, which could result in long-term cost savings on your utility bills.

A radiant floor heating system with a "knot of a warm floor" could be a smart investment in your comfort and energy savings, whether you’re building a new home or remodeling an old one. As we’ve seen, it’s an excellent option for insulation and heating in any home because of its ease of use, effectiveness, and opulent warmth.


You can construct an independent water heating system with the ability to control the coolant’s temperature by utilizing a heat-mixed node in the layout of a heated floor.

Low-temperature equipment is known as hydropolous heating. Water should be supplied to the floor pipeline at a maximum temperature of +55 degrees. Since a tie of this type is typically connected to a battery or boiler, where the liquid is heated to a much higher degree, a unique compliance module is needed.

This node is where the chilled coolant is combined with hot water that is returned from the heating source to the necessary indicator.

Additionally, this mixture of water regulates the amount of coolant that each loop receives.

Principle of operation

Every model of pumping device operates essentially the same way. The thermostat regulates the temperature of the heated coolant stream as it moves away from the source. After that, the water enters the fuse and is controlled by opening and closing the head according to its temperature.

The subfamily chilled water from the return operates the damper when the fuse trips if the coolant’s degree of heating rises above the indicated level. The feed is blocked once the required level is attained.

The pump is in charge of the hydroelectric complex’s liquid circulation; it warms the floor surface uniformly, which facilitates operation.

Areas of use

If water is used as the coolant, a pump mixture becomes necessary. We’ll learn which situations this occurs in.

  1. If a water warm floor is connected from central heating – since the heating of water in a centralized system exceeds the required level for floor heating.
  2. When connecting from a boiler that does not work with a check of +55 and below – these are all solid -fuel boilers and functioning on gas.
  3. If the highway is two or more contours with different temperatures (warm floors with radiators).


Every pump-mixing node is separated based on the kind of working body:

  • With a three -way valve – are installed in the premises having a large area, since the device can pass a large volume of water. Such a tee for mixing is connected more often to the outer thermal attemptor, which makes it possible to install the heating level, pushing away from the street temperature. The adjustment process is carried out using a damper, which is located at the junction of the supply and reverse pipe. The design scheme is mainly used – consistent.

  • With two -way – recommended for rooms up to 200 m2, connected both in parallel and in a sequential mixing scheme. The valve has a thermogram with a sensor, it is controlled by the temperature level, when the indicator is exceeded, the supply of hot water is overlapped. The volume of the liquid that this design is capable of is small, so the process of adjustment is smooth.

  • Combined – combine a valve and a balancing node. But this option is rarely used with heating floors.

Schemes of pump-mixing nodes

There are various methods for gathering the pumping and mixing nodes; the distinction is in how the pump is connected and how the valve is arranged.

Purchasing these tested models is the better option.


The intricate mechanism known as the mixing node is in charge of continuously circulating water at a constant temperature. It comprises several mechanisms and enters the collector block.


The pump’s primary job is to keep water flowing through the pipeline continuously. Through the floor branches and collector, he feeds and returns it. Performance and pressure are its primary indicators.

The pump will guarantee that the floor line’s hydraulic resistance is overcome with accurate calculation. Using a device that automatically switches between working modes is advised.

Cost regulator

  1. Balancing crane of the primary circuit (float) – it is responsible for the number of coolant, which enters the highway from the primary high -temperature source. The flow is regulated due to its bandwidth. The tuning is carried out by the valve with the head, it rotates with the key. The adjustment is also carried out by a valve of the thermostat, for the control of which the remote sensor is responsible.
  2. Balancer valve of the secondary circuit – it is adjusted depending on the size of the heated area. By opening and closing the control valve, the proportions of the heated and chilled stream change. Closing the balance sheet valve of the secondary circuit leads to an increase in the supply of hot coolant from the boiler, and this is to an increase in thermal conductivity.

A scale is used to control the degree of opening, and it is applied to the flask. It calculates the device’s throughput in M3 per hour.

Bypass valve

By allowing for the bypass valve and the abstract mode, which terminates the fluid flow through the floor pipeline completely or partially, the bypass helps to guarantee the continuous operation of the pumping apparatus. This may occur if the crest’s loop valve is manually closed or with the assistance of cranes.

As a result, both the load on the mechanism and the resistance to the water flow increase. When the system’s pressure rises, the bypass valve opens.

The coolant flows through bypass nozzles and the pump, closing the small circulation cycle. As a result, emergency situations are excluded.

Auxiliary elements

Auxiliary type components are also in charge of keeping an eye on and sustaining the pump-mixing structure’s efficient operation. This:

  • Thermometer – controls the temperature of the coolant;
  • air vent – through it, air is removed from the system;

  • drainage taps, their purpose – water descent;
  • reverse ball valve – prevents the movement of the coolant in the opposite direction.

Collector block

Collector group: based on a specific number of branches, it is connected to the warm floor’s contours. The supply and reverse crests are included.

  • Fill a three -way mixing thermostatic valve to the corner.

  • To the mixer, to the side where the return will be connected, we screw the check valve – without it, the node will not work correctly.

  • To the return, and to the average exit of the mixing node, mount thermometers.

  • To the thermometer coming from the supply pipe, we attach the circulation pump. It is necessary that the direct segment of the distance from the thermometer to the pump, and from the pump to the collector are equal, and make up 10 diameters of the supply pipe.

  • Next, we mount the collectors that are recorded on a special bracket. We connect the supply rowing with ball valves to the pump, the return collector will be with regulatory valves.

  • To the end exit of the feed and reverse manifold, we fasten tees to which the air vent is attached.

  • Install the air vent.
  • On the lateral exits of both tees are installed on a drainage crane. They are necessary to fill or drain the system.

  • We connect a segment pipe made of polypropylene or metalloplasty to the opposite collector. Its size should be equal to the distance from the feed collector to the thermometer.

  • Between this pipe segment and the return thermometer we place the second mesh filter.

  • We fasten the ball valve to the opposite valve.

It proved to be a low-cost, basic version of a homemade pump-mixing node for heated floors.

  • The mixing and distribution node in the closet is installed.
  • The corresponding pipes from the boiler are connected to the ball valves of the collector.

  • Paul circuits are screwed to the outputs of the rowing.

You can inspect the warm hydraulic floor design to see if there are any leaks. It is mounted. The screed is filled and the finishing material only starts to creep after that.

Component Description
Heating Element The element responsible for generating heat, usually installed beneath the floor surface.
Thermal Insulation A layer that prevents heat loss downwards, ensuring efficient heating of the floor and room.

When looking for economical and cozy heating options, installing a radiant floor heating system—also known as a "warm floor"—can be a game-changer for homeowners. By moving warm water through pipes or electrical cables buried beneath the floor, this cutting-edge technology softly radiates heat upward into the space. Not only do your toes get warm, but your room stays warm and comfortable all winter long.

The capacity of a warm floor system to disperse heat uniformly throughout the space is one of its main benefits. Radiant floor heating consistently heats a space from the ground up, in contrast to conventional heating techniques that depend on convection currents, which can cause hot spots close to heat sources and colder spots farther away. This frees up valuable space and improves the aesthetics of the area by doing away with the need for large radiators or vents.

Compatibility with a variety of flooring materials is another advantage of a warm floor system, in addition to its efficiency and even distribution of heat. Radiant floor heating is compatible with almost any kind of flooring, including hardwood, tile, laminate, and even carpet. Because of its adaptability, homeowners can take advantage of the advantages of a warm floor without compromising on their preferred style or interior design.

Furthermore, radiant floor heating has a reputation for being energy-efficient, which over time may result in cost savings. Warm floor systems can help cut down on energy use and heating costs by heating the space from the bottom up as opposed to using baseboard or forced air heaters. Furthermore, a lot of contemporary systems have programmable thermostats, which let users further optimize energy use by customizing heating schedules based on their daily schedules.

In conclusion, homeowners wishing to improve their comfort and efficiency can benefit greatly from the installation of a warm floor system. Radiant floor heating is a useful addition to any house because of its reliable heat distribution, adaptability to different flooring types, energy efficiency, and adjustable heating schedules. When designing a new home or remodeling an old one, take into account the advantages of having a warm flooring system for a comfortable and welcoming living space.

In the world of home heating and insulation, the warm floor system stands out as a knot of comfort and efficiency. It"s more than just a luxury; it"s a practical solution for keeping your home cozy while saving energy and money. With radiant heat gently emanating from beneath your feet, a warm floor not only adds a touch of luxury to your living space but also distributes heat evenly, eliminating cold spots and drafts. Whether you"re considering it for a new construction or retrofitting it into an existing home, a warm floor system offers a range of benefits, from improved energy efficiency to enhanced comfort and even potential health advantages. Understanding how this system works and its various components is essential for anyone looking to optimize their home"s heating and insulation setup.

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Michael Kuznetsov

I love to create beauty and comfort with my own hands. In my articles I share tips on warming the house and repairing with my own hands.

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