Connecting the security group of indirect heating boiler. Safety groups of indirect heating boilers from various firms

When installing a boiler in a residential building, it is necessary to pay great attention to the safety of its use.It is important to remember that in this apparatus there is a significant amount of water with very high temperatures. So that on the walls of the boiler did not affect the excessive pressure, as a result of which the heated water follows from the device, in such equipment there are special parts called a security group.

Purpose

The main function of the water heater security group is to provide the desired pressure in the system and its control. Thanks to such equipment, you can urgently reset the pressure when it exceeds the maximum permissible parameters.

Structure

The elements of the water heater security group are:

• Excessive pressure valve, which is also called safety.
• Check valve that prevents the return of water from a boiler to the water supply system.
• Cut-off (shut-off) valve.
• Adapter through which flexible hoses are connected.

These components can be installed separately or be represented by the collected in one case.

In big boilers, a hydroaccumulator can be installed.

Views

By buying a security group for a boiler, you can choose among such options:

• OSO equipment. The OSO KV kit, designed for up to 9 bar, includes a special shut-off valve and a special duplicate valve that performs the function of non-refundable and safety. The OSO BS kit contains a valve that plays the role of thermosmery and non-returnable device. Hot water is discharged from the nozzle located at the top of the equipment. This security group can be installed in the case of using several boilers at once.
• Watts equipment. Calculated for pressure 7 atmospheres, in the configuration has a precipitant guide. The advantages of such security groups are high reliability, good quality and affordable cost.
• SYR equipment. Such equipment is designed for pressure 6-10 bar, depending on the model. The SYR 330 DN kit is able to withstand the temperature to + 95ºС. SYR 24 DN and SYR 25 DN kits have 1 soundproofed class, include an obstruction system with reverse water flow, safety valve and a shut-off valve, as well as pressure reducer and a drain expandable funnel. Equipment made of pressed brass.

• Set of SDM GB. Such a security group optimally protects closed-type heaters. In a single compact package, reverse and safety valves are contained, as well as a shut-off valve. The kit can be installed on a volume of from 200 to 3000 liters. It is able to effectively protect the boiler from hydraulic overload, withstanding pressure 6-10 bar.
• Kit ACV 10800102. Its use accelerates the installation and launch of the boiler, since this kit has not only a security group, but also a special mixing valve, as well as other specialized parts for installing the heater.

Application

A safety valve is necessarily installed on any cumulative water heater, and if there is no security group on the device, it immediately deprives the warranty device. When the valve is triggered, it causes a reset of a small amount of water, which reduces the pressure in the system. The valve pressure settings are typically fixed and installed by the manufacturer. They also provide a manual pressure discharge option.

Installation and installation

When choosing a security group suitable for your boiler, it is important to take into account the pressure on which its safety valve is calculated. To effectively protect the apparatus from excessive filling with water, the security group is mounted on an incoming pipe, which serves cold water. In this case, it is necessary to establish the parts so that the coolant moves according to the direction indicated on the body of the safety group of the arrow.

In the next video, you can see how to collect just purchased in the store a safety valve for boiler Vaillant.

Safety regulations

• It is important to remember that the details of the security group are heated, so there is always a risk of burns when contacting them.
• Recommended regular maintenance of such equipment, which is carried out in conjunction with the service of the boiler.

And specialists should be engaged in the installation and service of the security group.

Boyler of indirect heating designed to provide private houses, cottages, enterprises with sufficient water. The principle of the boiler is simple, however, the efficiency of this device depends on whether the boiler of indirect heating is connected to the boiler.

An indirect heating boiler is purchased to work with a single-circuit boiler. Together, this equipment will take more space than a double-circuit boiler. In families with the number of households from two or more people of the flow heating system will be ineffective, the optimal solution is an indirect boiler heating.

The boiler capacity varies from 80 liters and up to several cubic meters. There are recommendations for lettering boilers . On two people, this is a minimal tank capable of serving two water-based points at the same time. Three people need a solitarian tank on three points of water treatment. On four, it is 120 liters, and five to 150 liters, etc. If in the house, they are often clean in the bath, then the tank is obtained by molding from 120 liters. It must be borne in mind that these figures are averaged, since the need for hot water is very individual.

Internal boiler device indirect heating is quite simple - economic water is heated by the coolant from the heating system passing through In a tank with heated water.

It is preferable to acquire boilers with stainless steel tank (to ensure durability). Some characteristics are shown below in Table:

where, D is the difference between the incoming and reached temperature. These characteristics can only be achieved when the boiler power supply is at least the specified power of the boiler heat exchanger! It should also be noted that the temperature of the incoming water in winter and in the summer will be different (from + 5c and up to + 15 ° C).

There are also boilers with a system that have a self-cleaning function from scale. It is provided by the form of an internal tank in the form of corrugations.

The characteristics of such boilers are given in the following table:

As already written above, the characteristics issued directly depend on the power of the boiler itself. The thermal power of the boiler should not be lower than the power of the boiler, otherwise the amount of heated water will be less than the declared. And if the boiler power exceeds the power of the boiler, then the amount of heated water will be the maximum possible, based on the power of the boiler itself. For example, if you purchased a capacity of 31 kW and you need a 100 liter boiler, then the best purchase in this case will be a coil boiler, because the capacity of these units is ideally correlated for better performance - 30 and 31. Boiler with the system "Tank in The tank "23 kW will not be able to master the entire power of the boiler and the characteristics issued by them will be less than in the first case. If you purchased a boiler for 24 kW, then in this case it is better to take a boiler with the system "tank in the tank", since in this case the maximum performance of the DHW is achieved, and the boiler with a coil will be in power losses.

Most engineers they believe that boilers "tank in the tank" is preferable. Durability is achieved due to self-cleaning, and due to the internal device, heat transfer area is increased than an increased performance is achieved. Therefore, in most cases, such boilers are preferable. Although simple are considered cheaper in value. And in general, if you chose a simple boiler - it is not bad at all.

The following scheme shows the approximate location of the shut-off reinforcement and protection devices connecting an indirect heating boiler To a floor boiler adapted to connect it with the ability to control pumps. These are mainly energy-dependent foreign boilers.

When connecting an indirect heating boiler to a non-volatile boiler, such as domestic AOGV or KSG, the boiler pump controls from the boiler thermostat. At the same time, it should be noted, the water heating rate is significantly reduced, since the boiler power is distributed between the heating circuit and the boiler.

Before the boiler at the entrance of the cold water is required safety reset valve By 6 - 8 bar, depending on the characteristics of the boiler (an example in the photo below. Here is a reset valve with a check valve assembly).

Watts 3/4 boiler security group for 7 bar (10004611)

Everyone knows that when you turn on hot water, some time it goes cold out of the crane. This problem is solved by installing groups without pearling boyler With an additional weak pump. Such pumps offer many manufacturers. The following scheme provides an example of installing the recirculation line:

It should be noted that the diagram is applicable to the boiler, equipped with recycling. If there is no such exit, then the scheme will look like this:

Here we see that the recycling line is crashed into cold water after the check valve and the security group. On it, after the pump, another check valve is crashed to prevent cold water from entering recirculation.

In general, when connecting an indirect heating boiler for hot water supply in the house, we will get the same comfort as in the urban apartment with central water supply with a favorable difference in its purity. Such water can be used in nutritional purposes, even pour into the kettle without harm to health.

To ensure the house, the necessary amount of hot water use an additional device - an indirect heating boiler (BKN). Its use can be considered one of the most rational and economically justified.

We will try to find out which scheme of the strapping of the boiler of indirect heating is most effective and how to connect equipment to avoid common errors.

Before buying and connecting a buffer battery (as elsewhere called BKN), it should be understood in the structural features of the most popular species. The fact is that there are many types of equipment, including combined models that work from heating systems and alternative energy sources at the same time.

We will look at traditional coil boilers using hot water as a heater.

Features of the design and principle of work

What does indirect heating mean? Direct heating devices function by connecting to electricity or gas burner, BKN has another source of heat. Water is heated due to the connection to the DHW, that is, it turns out that the source is the coolant - hot water (or its substitute).

Externally, the BCN resembles a standard water heater - that is, it has a barrel-shaped form, although modern models are more ergonomic. For ease of use and installation, they give a rectangular configuration.

If we consider new models of famous brands, then you can see that gas boilers and often have the same design. They are mounted near or one under another - you can save on accommodation area.

The main element that performs the heating function is a steel or brass heat exchanger (coil) with a large surface area, which is located inside the metal, covered with a protective layer of the enamel of the tank. So that the cooling of the water does not occur too quickly, with the outer side, the body is surrounded by a layer of thermal insulation, and some models and a casing.

Schemes and rules for connecting BKN

Connection diagram and features of the installation of indirect heating boiler depend on the class of the device and. It is necessary to choose the right place of installation, focusing on the location of the boiler, the inserting pumps and the existing wiring. Let's try to figure out what needs to be taken into account when installing heating equipment.

Option # 1 - Venting with a three-way valve

This is one of the most popular schemes, since when it is used, a parallel connection of the heating system and BKN, equipped with a shut-off reinforcement, occurs. The boiler must be installed near the boiler, to feed the circulation pump to cut, then the three-way valve.

This scheme is successfully applied if several heating devices are used, for example, two different boilers.

2016-12-25 Evgeny Fomenko

Safety kits for different firms

The security group for the boiler of indirect heating the VALLIANT manufacturer consists of the following parts:

• Check valve.
• Two shut-off cranes, before and after the check valve.
• Excessive pressure valve.
• Fitting for connecting a pressure gauge.
• Drainer.

Connects to cold water water supply. It is used for indirect type VAILLANT VED H 27/7 int, VIR 150/5, Unistor VIH R 120 (how to connect a temperature sensor to the vaillant boiler read). In the case of pressure in the water supply system, less than 5 bar is used art. -№473, if the pressure is more than 5 bar - art. -№474.

If the water is too dirty, you need to install the filter before it. For water heaters, Buderus use SG 160S security group, which is usually supplied with a water heater.

It includes a number of details:

• Case with check valves.
• Running adapter.
• Shut-off and shift check valve.
• Safety valve.

The housing and compounds are made of brass-resistant disinfect. You can install both horizontally and vertically. When choosing a place of installation, you need to leave free access to the device nodes.

It is applied with the following models: Buderus Logalux SM-200/5, SU200 / 5, SMH 400/5 W. Watts manufacturer makes fittings and additional devices for boilers and water heaters.

Watts equipment set consists of several elements:

• Automatic air vent.
• Manometer.
• Safety valve.
• Shut-off ball valve with 90 degree closing-opening.
• Water guide preventing splashing.

The nodes are mounted on the steel console. Mounted in a vertical position above the boiler. The design is quite compact, made in a brass case. Once a month it is recommended to scroll the handle of the safety valve counterclockwise for flushing it. Withstands the temperature of the water to 120 degrees. Suitable for Baxi boilers. It is considered one of the most reliable manufacturers.

The set of a firm with a properm consists of a pressure gauge with an aluminum dial with a range of operating temperature from -30 to 120 degrees, air vent and safety valve. Shows this pressure in the system and, if necessary, drains the extra liquid. When installing, you should consider the direction of movement of the aqueous stream, which is shown by the arrow.

The ACV kit except the security group contains a specialized mixing valve and an expansion tank. Suitable for SMART manufacturer water heaters. If you decide to replace something or adjust, it is important to remember that the water is hot and there is a danger of burning burns.

Meibes Equipment additionally includes a decorative drain funnel, MEIBES ME 6915B.80 PE safety valve for 8 bar and adjusting throttle. Suitable for devices of up to 200 liters. Installation should be engaged in specialists.

If several boilers are combined in the system, the OSO equipment is suitable. Designed for increased pressure and having an additional duplicating valve.

Purpose

When heated, water in the indirect heating device is expanding and put pressure on the walls of the tank. To prevent destruction and gap, a security group is established. It allows you to control the pressure inside the tank and, if necessary, merge excess water.

When the water pressure reaches a certain boundary value, which depends on the settings, the constipation opens and the water is automatically drained, lowering the pressure. It is also a protection against the body break when the thermal sensor and water heating is too much.

If you do not install the Security Group, in the event of a heater breakage, the firm may refuse you in warranty obligations. It usually comes with a boiler, but you can also buy it separately. The price of it varies from 700 to 4000 rubles, depending on the parameters of the device and reliability.

In the event of an emergency increase in gas or water pressure, a security group is used to protect the heating system. Buy a security group for heating follows anyone who wants to protect their boiler or water heater from a premature breakdown. It is a combination of three devices - a pressure gauge, safety valve and air vent. The pressure gauge is needed to control the pressure level in the system - the red arrow indicates a division corresponding to 3 atmospheres as the maximum level of pressure. At the highest point, an air vent, which eliminates excess air in the system. Finally, the function of the safety valve in the security group is to prevent excessive pressure in the event that the expansion tank does not work.

Security groups for boilers Require the correct installation, otherwise the ill-conceived actions will lead to the failure of the heating system. The security group is installed on the supply in such a way that the cutting crane is behind it. If this is a closed heating system, then it is necessary to arrange a security group so that when one of the three elements fails, it was easy to replace it.

Boyler Safety Groups 3/4

Boyler Safety Group 3/4 from Brass - One of the most common and purchased. In our catalog you will find security groups with other connection diameters - 1, 1/2. A security group for the boiler is installed at the inlet of cold water in the direction indicated on the housing. Any boiler has such a parameter as a working pressure that depends on the pressure in the entire pipeline system. When heated, this pressure may increase by a few atmospheres, and excess water will put pressure on the walls of the boiler. The security group controls the pressure in the boiler so that it does not rise above the norm.

Buy Safety Group for Heating - Prices

The security group for the heating system is quite accessible, and it is pleasantly combined with the impeccable quality of the goods. Compact combination of pressure gauge, safety valve and air vent is available to everyone and is necessary, especially if you use a boiler with a volume of more than 50 liters. To choose and buy a security group for the boiler, contact our specialists in the phone indicated on the site.

All information on security groups - price, models and more can also be found on the site.