Valtec manifold group for underfloor heating

What regulates the bypass of the mixing unit TIM JH-1036.

The mixing unit has a conditional mixing chamber, through which the underfloor heating circuit and the boiler heating circuit pass.

Usually, the mixing unit of the floor heating has one parameter to regulate. the temperature of the water in the circuit of the floor heating. TIM JH-1036 mixing unit has another bypass, and it is also adjustable. And it is not that bypass balancing bypass, which is triggered by the excessive head developed by the pump.

The pressure balancing bypass can be seen in the photo. the rightmost reason.

I need it because it is possible to overlap all directions of floor heating as a result of automatic regulation. By the way, how to adjust the balancing bypass TIM M307-4 I have not figured out. can anyone suggest.

As for the mixing chamber bypass, you can find such a graphical explanation of the mixing unit bypass operation:

over, it is not clear what the numbers on the scale mean, and what the current value is tied to. All this can only be found out by holding a mixing unit TIM JH-1036 in his hands:

It turns out that the adjusting screw turns the cylinder, which has a slot that closes when you turn it. Water can be pumped through this slot by the circulation pump, bypassing the conditional mixing chamber.

Note that the sticker with the 0 to 5 scale can be put on at will.

Maximum opening of the slit (pictured above) corresponds to setting the adjusting screw to position 5 (pictured below).

The reference point for reading the scale value can be the technological ledge on the mixing chamber housing. At a scale value of 0, the slot is closed as much as possible. In this position, all the water pumped through the floor heating circuits flows through the mixing chamber.

When the bypass is fully closed, the heat output of the mixing section of the heating system is at its maximum.

If the bypass is fully open, then part of the water circulates through the heating circuits, not getting into the mixing chamber. and the heat output of the selection is minimal.

But in practice it turned out that not only the heat output is regulated by the bypass.

Advantages of valtec manifold blocks

Valtek uses proven materials and quality raw materials for the manufacture of manifold blocks. The brand catalog is represented by a variety of modifications of the products, so you can bring to life the most complex engineering solution. Valtec manifold blocks for underfloor heating undergo a thorough inspection and testing at the factory to ensure the highest level of efficiency and economy in the operation of the underfloor heating system. In the range of the company there are products with mechanical and automatic type of temperature control. The manufacturer claims that the collectors will last at least 50 years.

Creation of underfloor heating system involves the installation of manifold groups, as well as equipment that allows you to organize the supply and withdrawal of the coolant. You can buy these products in our stores at a reasonable price. All equipment we sell is produced in factories of renowned manufacturers, which guarantees high quality of manifold systems and separate assemblies.

We offer underfloor heating systems of any size and level of complexity, which include not only complete groups, but also individual elements (pumps, servo drives, etc.).). Thanks to this you can always buy the equipment you need most.

Configuration of manifolds with set-up flow meters

Underfloor heating manifolds presetting is necessary and important. Even if the system has thermostats, controllers and other automatics. If you entrust the adjustment to the automatics, after a while all the flows will be as open as possible. So before we start the system, we tune the manifold. Adjust the flow on a cold system without turning on the boiler. Heating starts after billing the loops to check the temperature.

What is a flow meter and what is its construction

Flow meters are used for the initial adjustment of flows, which is easier, more accurate and faster with them. In addition, during operation it is possible to evaluate the current flow rate in relation to the set flow rate. To understand the mechanics of the adjustment you need to know how the flowmeter is built and how it works. This is a hollow body with a poppet that is supported by a spring. The spring is calibrated. Its tip is set into a transparent cone with a scale.

To help orient and adjust the flow rate, a flow indicator is mounted on the spring. In flow meters that are installed on the supply side, the flow indicator is set at the top of the body by default. In this position, it indicates 0 and the flow is shut off (as pictured above). If the flow meters are designed for installation on a return manifold, the flow indicator is at the bottom.

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There are two types of flowmeters with and without fixation of adjusting sleeve position. The first ones are more reliable because they do not lose their settings, which can happen to ordinary flowmeters. But they are more expensive. And since the manifold unit itself is not cheap, they often install flow meters without fixation.

How to set flow at the flow meter

There are marks and numbers from 0 to 5 on the scale. The number indicates the flow rate is the speed of the coolant in meters per second (m/s). The order of flow adjustment is as follows:

  • Remove (unscrew) protective cap. They are red on the Valtec manifolds.
  • Loosen the fixing sleeve. If you don’t have one, you skip that step.

So one after the other we set the flowmeters for each loop of the floor heating. As you can see, without the locating bush, there are slightly fewer steps. Please note: it’s best not to skip the zero adjustment step. It does not take long, but allows you to check the calibration.

Techniques for adjusting underfloor heating flow meters

If you do everything according to the rules, you must have a thermo-technical calculation that shows the flow in each loop. There is a plan? Then according to the plan you set the values. If not, we act on the size of the loops. If we lay pipes with the same cross-section, we will have to modify the flow rate based on the required heat dissipation. But in this case we need to know the length of the pipe in each loop.

Let’s take an example. Let’s have four loops: 90 m, two 75 m and 50 m. The procedure for adjusting the flow meters of a Valtec manifold is as follows:

    On the longest 90 m loop open the flow meter fully (if maximum flow is required) or set to the required value. Let’s assume that for this case we need a maximum flow rate of 5 m/s. To do this, we lower the flow indicator to the very bottom. There’s a pointer of 5 m/s.

In case the flow on the longest loop should be lower than the maximum possible, set the required value on it (even if it is 3 m/s or 2 m/s). Recalculate the rest using this value of flow.

Next, turn on the boiler and check how well the manifold is set. If they are the same length, and the same flow rate is set, it could be that one circuit heats much better. This is due to a different laying pattern. The circuit that heats worse probably has more bends or they are steeper. This increases the hydraulic resistance, which reduces the velocity of the coolant. This means that less heat is transferred. Decision to slightly increase the flow rate and see the result.

Schematic diagram of a mixing unit

The most popular mixing set assemblies are shown below. For each group of manifolds you will need to install your own thermostats, flow meters and valves. Mixing can take place both upstream of the manifolds and on each outlet of the manifold group.

Valtek manifold for underfloor heating for one circuit up to 20 sqm. м.

The photo shows the connection diagram of a single floor heating circuit

Valtek single-circuit mixing unit with automatic regulation

Valtek unit with automatic regulation for connecting 2-4 floor heating circuits for 20-60 square meters.

manifold box for the connection of 3 to 12 floor heating circuits (for 30 to 150 square meters).

Also the scheme can be supplemented with additional elements:

  • The balancing valve for the secondary circuit allows you to adjust the ratio of hot and cold water from the return flow. The valve can be turned by means of a hexagon socket. It is secured with a clamping screw to prevent accidental displacement of its position. It also has a scale of flow capacity (0-5 cubic meters per hour).
  • A balancing shut-off valve for the radiator circuit is needed to connect the mixing unit with other elements of the system. It also rotates using an Allen key.
  • A bypass valve is a fuse that protects the pump from a mode in which fluid flow through it stops. It is triggered when the pressure in the system decreases to a predetermined level.

Wiring diagrams for mixing sets are shown at

Keep in mind that schemes may vary depending on the type of heating system: one-pipe or two-pipe. For example, if you have a one-pipe system, the bypass should always be open so that some of the hot water can always pass on to the radiators. In a two-pipe system the bypass will be closed, as it is not necessary.

Please note! It is not necessary to place the manifold group upstream of the radiator circuit. If you have a small house and the temperature does not have time to cool down much as you go, you can mount a manifold on the return to the radiator circuit.

Valtec manifolds for water

Often searched for: Assembled; Product Type: Bracket; Brand: VALTEC; Application: For mounting a manifold; Body Material: Steel; Steel Type: Stainless; Connection Diameter: 3/4; With pump: No; With taps: No; With flow meter: No;

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Product type: Adapter; Brand: VALTEC; Connection diameter: 1/2; Weight: 0,011;

valtec, manifold, group, underfloor, heating

Often searched for: Assembled; Type of item: Bracket; Brand: VALTEC; Application: For manifold installation; Body material: Steel; Type of steel: Stainless steel; Connection diameter: 1; With pump: No; With taps: No; With flow meter: No;

Often searched for: With taps, assembled; Type of Item: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of taps: 3; Connection Type: Thread; Outlet Type: Thread;

Products: Collection; Type of Item: Collection; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation: Built-in; Type of valves: Adjustable; Number of outlets: 4; Connection Type: Thread; Outlet Type: Thread;

Often searched for: Assembled, with cocks; Type of goods: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of bends: 2; Type of connection: Thread; Type of connection diverter: Thread;

Often searched for: With taps; Collection Type: Collection; Brand: VALTEC; Application: For hot and cold water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of branches: 3; Connection Type: Thread; Outlet Type: Thread;

Often searched for: With assembly; Product type: Adapter; Brand: VALTEC; Steel type: Stainless; Connection diameter: 3/4; With pump: No; With taps: No; With flow meter: No; Assembled: Yes; Service life: 10;

Often searched for: Assembled, with cocks; Type of goods: Collector; Brand: VALTEC; Application: For hot and cold water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of bends: 2; Type of connection: Thread; Type of connection diverter: Thread;

Often searched for: With taps, assembled; Type of Item: Collector; Brand: VALTEC; Application: For heating, for cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of outlets: 3; Type of connection: Thread; Type of connection: Thread;

Products: Collection; Type of Item: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation: Built-in; Type of valves: Adjustable; Number of bends: 3; Type of connection: Thread; Type of connection: Thread;

Product type: Collector Group; Brand: VALTEC; Connection diameter: 1; Outlet connection diameter: 3/4; Lifetime: 25; Weight: 2.86;

Often looking for: Assembled; Type of goods: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Shut-off valve Type: Non-adjustable; Number of outlets: 2; Connection type: Thread; Type of connection: Thread;

Often searched for: Assembled; Type of goods: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Not adjustable; Number of outlets: 3; Connection type: Thread; Outlet connection type: Thread;

Often searched for: Assembled; Type of Item: Collector; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Irregular; Number of bends: 3; Connection type: Thread; Outlet connection type: Thread;

Often searched for: Assembled; Type of Item: Manifold; Brand: VALTEC; Application: For mounting a manifold; Enclosure Material: Steel; Installation Type: External; Steel Type: Galvanized; Width: 454; Height: 651 (691); Depth: 120;

Often searched for: As a complete; Product Type: Cabinet collector; Brand: VALTEC; Application: For the installation of the collector; Enclosure Material: Steel; Installation Method: Built-in; Steel Type: Galvanized; Width: 594; Height: 670 (760); Depth: 125 (195);

Often searched for: Assembled; Type of Item: Manifold; Brand: VALTEC; Application: For Manifold installation; Body material: Steel; Installation method: External; Steel type: Galvanized; Width: 704; Height: 651 (691); Depth: 120;

Often searched for: Assembled; Product Type: Manifold; Brand: VALTEC; Application: For mounting a manifold; Enclosure Material: Steel; Installation Type: External; Steel Type: Galvanized; Width: 554; Height: 651 (691); Depth: 120;

Products: Collection; Type of Item: Collection; Brand: VALTEC; Application: For cold and hot water; Body material: Brass; Installation method: Built-in; Type of valves: Adjustable; Number of branches: 4; Connection Type: Thread; Outlet Type: Thread;

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Valtec manifolds for underfloor heating in Saint-Petersburg

VALTEC manifold with control valves, 1 “x3 outlets. 1/2” S.

Built-in flow meter adjustment valve for manifold VTc.589 (0.5-5.0 l/min) VALTEC

Manifold group 1″ x 2 outlets. STAINLESS STEEL. with integrated. flow. complete, 3/4″ VALTEC

VALTEC manifold with control valves, 1 “x4 outlets. 1/2” socket.

Valtec manifold block 1″ x 3/4″, “euro cone” with integrated flow meters for 3 circuits

VALTEC manifold group VTc.589.EMNX.0603, 1″ BP-BP, 3 3/4″ outlets

VALTEC manifold flowmeter (for 596 and 586 manifold)

Manifold with control valves, 3/4 “x2 outlets 1/2” S. VALTEC

Manifold 3/4″ 4×1/2″ with VTc control valves.560.N.0504 VALTEC

VALTEC TECHNOMIX manifold for underfloor heating

The manifold group HERZH with built-in. flow. complete, 1 “x4 outlets. VALTEC European cone 3/4”

Manifold with 3/4″ Euroconus control valves, 1 “x2 outlets. VALTEC

Manifold for underfloor heating, heating, with flow meters 1″ 3 outlets nickel-plated brass TIM KD003

Valtec manifold with shutoff valves 1″ x 1/2″ 3 outlets

Manifold for underfloor heating TIEMME 1 “x3/4 “EC on 8 outlets with flow meters

Floor heating manifold with flow meters Oventrop Multidis SF 1404354 4 circuits

Manifold group 3 outlets x 3/4 x 1/2 BP (2/46) Valtec VTc.550.N.0503

Manifold for underfloor heating complete with flow meters 4 outlets

Manifold group, 1 “x4 outlet 3/4” Eurocone, stainless steel. stainless steel VALTEC VTc.588.EMNX.0604

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Manifold with regulation. manifold with adjustment valves, 1 “x3 outlets. VALTEC EURO Cone 3/4

VALTEC manifold with control valves, 3/4 “x3 outlets. 1/2” S.

Brass manifold for underfloor heating with flow meters, automatic air vent and drain valve TIM, 2 circuits, art.: KC002

Manifold group 1″ x 5 outlets Euro cone 3/4″ stainless steel. VALTEC VTc.588.EMNX.0605

manifold with adjustable. ball valves, 1 “x4 outlets. VALTEC Eurocone 3/4

Manifold group 1 “x2 outlet 3/4” Euroconus with flow meters, stainless steel. Valtec VTc.586.EMNX.0602

Manifolds for floor heating and radiators 4 circuits Thermotech manifold for floor heating and radiators stainless steel 4 circuits with two straight ball valves. 50104-6

Manifold group with flow meters 3 outlets assembly ViEiR, stainless steel

Manifold group UNI-FITT (440E4309) 1″ НР-ВР, 9 3/4″ outlets, flowmeter

Collector Tim KC005 for underfloor heating 1″, 5 outlets 3/4″

Manifolds adjustable FAR passage 3/4″ (BP-HP) with 4 1/2″ NC outlets (interaxial 45 mm), pls.upl.

Valtec manifold accessories

Joint Russian-Italian brand VALTEC enjoys well-deserved respect as a developer and manufacturer of high-quality and durable solutions for heating, cooling and water supply. Company products are widely used in households, services, production. VALTEC is famous for its wide range of fittings for the connection of sanitary devices and rational distribution of the working medium. The company not only strives to create new types of products, but also actively maintains existing products, offering options for expanded functionality, improvement and repair.

One of the important activities of VALTEC is the production of distribution valves involved in the processes of water supply and transport of coolant in radiator and surface heating systems. The consumer is offered a large selection of steel and brass manifold blocks, equipped with nozzles (2-12 pieces), threads, thermostatic valves, flow meters, control valves. These versatile plumbing designs are designed to solve global fluid distribution and control tasks, but may require some fine-tuning depending on the application and tasks at hand. It uses specific technical solutions, additional electronic devices, fixing elements, fittings and shut-off and control valves.

by-pass and by-passes with by-pass valve, mounted on the flow and return, ensure continuous flow of the working medium even in situations where the heating circuits are not sufficiently filled with thermal fluid. The combination of a bypass and a bypass valve ensures uninterrupted flow even in situations where the heating medium is not sufficiently flowing.- Bypass) keeps the system running and protects the circulation pump from running idle. Different types of manifold brackets (pair included) provide an opportunity for quality installation of manifold groups, reduce noise and vibrations.

Functions of VALTEC pump-mixing units are to provide circulation and preparation of the working environment with the temperature not exceeding 60C for surface heating system by mixing the coolant from the supply and return collector. The thermostatic head with a remote remote sensor is installed in the heating system communications, acts on the thermostatic valve of the pump-mix unit, thus regulating the temperature of the heating medium to be prepared. Tasks of connection to the manifold of different types of pipes, equipment and plumbing elements are solved by metal adapters, tees and nipples. Ease of use of fittings is determined by the use of a special spanner.

Valtec distribution manifolds

VALTEC manifolds. is a kind of plumbing fittings, designed for creation of many-circuit water heating or cooling systems. VALTEC manifolds can be used in floor and radiator circuits, as well as in radiant heating circuits. In addition, VALTEC manifolds eliminate the use of additional fittings in the system, reducing the number of connections, in addition, the use of distribution manifolds facilitates the design, installation and configuration and maintenance of the system.

The VALTEC assortment includes distribution manifolds for water, manifold blocks of different complexity and equipment, as well as a wide range of manifold connectors and fittings, which greatly facilitate the installation of devices. Among the simple distribution manifolds there are nickel-plated steel and brass models with both male and female threads and “Eurocone” threads, so you can choose the device that meets the necessary requirements. VALTEC distribution manifolds except heating systems and systems of hot and cold water supply, can be used in drinking water systems, compressed air systems and technological pipelines. Besides all VALTEC manifolds are compatible with steel, plastic, metal-polymer and copper pipes.

Underfloor Heating Express Manifold Installation Assembly Guide

In turn, the VALTEC distribution manifold blocks, are more complex devices combining supply and return headers, valves with manual adjustment function (can be supplied with or without flow meters) and the possibility of installing an electro-thermal servo, self-contained air outlet, drain valves and brackets for mounting. These distribution units can be used in radiator and underfloor heating systems. As the working fluid can be used water or antifreeze, and the number of loops depending on the modification of the VALTEC manifold unit can reach from 3 to 12 distribution units. The connection to the circulation loops is made with VALTEC fittings type “Euroconus” 3/4″, which greatly facilitates installation.

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