Uute design. Cold water metering unit Design of a cold water supply system

The subscriber wants to oblige the WSS organization to recalculate in connection with the supply cold water inadequate quality

The WSS organization wants to collect payment for cold water consumed in the absence of a contract

The WSS organization wants to recover the debt for unaccounted for consumed cold water

The subscriber has not paid the accrued fee for water disposal services in relation to general house needs, for which charging is not allowed, and wants to oblige the WSS organization to recalculate

The subscriber wants to oblige the WSS organization to recalculate the payment for the supplied cold water, as the WSS organization incorrectly determined its volume

1. Quantity is subject to commercial accounting:

1) water supplied (received) for a certain period to subscribers under water supply agreements;

2) water transported by an organization operating water supply networks under a water transportation agreement;

3) water in respect of which water treatment measures have been taken under a water treatment agreement;

4) Wastewater accepted from subscribers under water disposal agreements;

5) wastewater transported by the organization transporting wastewater under a wastewater transportation agreement;

6) wastewater, in respect of which treatment has been carried out in accordance with the wastewater treatment agreement.

2. Commercial metering of water and waste water is carried out in accordance with the rules for organizing commercial metering of water and waste water, approved by the Government of the Russian Federation.

3. Commercial metering of thermal energy, which is released (received) for a certain period to subscribers as part of hot water under hot water supply contracts, is produced in accordance with the Federal Law "On Heat Supply".

4. Commercial metering is carried out at metering stations by measuring the amount of water and waste water with water, waste water metering devices or, in the cases provided for by this article, by calculation.

5. Meters for water, wastewater are placed by the subscriber, the organization operating water supply or sewer networks, at the border of the balance sheet ownership of networks, the border of the operational responsibility of the subscriber, these organizations or in another place in accordance with the agreements specified in part 1 of article 7, part 1 article 11, part 5 of article 12 of this federal law, agreements on connection (technological connection). Meters for water, wastewater, installed to determine the amount of water supplied to the subscriber under a water supply agreement, wastewater diverted by a subscriber under a water disposal agreement, are sealed by organizations that provide hot water supply, cold water supply and (or) water disposal and with which these agreements are concluded, free of charge payment from the subscriber, except for cases when the sealing of the relevant metering devices is performed by such an organization again due to the violation of the seal due to the fault of the subscriber or third parties.

(see text in previous edition)

6. Connection (technological connection) of subscribers to a centralized hot water supply system, a centralized cold water supply system without equipping a metering station with water meters is not allowed.

(see text in previous edition)

7. Subscribers and organizations operating sewer networks are obliged to equip their sewer outlets in centralized system wastewater disposal with wastewater metering devices in cases determined by the rules of cold water supply and sanitation, approved by the Government of the Russian Federation.

8. Installation, replacement, operation, verification of water and waste water meters are carried out in accordance with the legislation of the Russian Federation.

9. Subscribers, organizations operating water supply and sewer networks are obliged to provide access to representatives of the organization providing hot water supply, cold water supply and (or) sanitation, with which the agreements specified in

11. If the subscriber does not have a wastewater metering device, the volume of wastewater discharged by the subscriber is taken equal to the volume of water supplied to this subscriber from all sources of centralized water supply, while taking into account the volume of surface wastewater if the acceptance of such wastewater into the drainage system is provided for by the contract drainage.

Services for the installation of technical metering units on a turnkey basis in apartment buildings, factories, shopping centers, MKD, HOA.

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We install metering devices for heating, hot water, cold water. Meters are installed in apartment buildings, kindergartens, schools, industrial enterprises, heat supply companies, boiler houses. Any consumer or source of energy resources of central heating, central water supply. Metering units are installed to control utilities in housing and communal services. The main customers for the installation of common metering devices are MKD, HOA, and other consumers of central heating.

Installation of metering units according to the "all inclusive" system. Request for the necessary documents in the RNO, development and project approval, installation and installation of heat energy metering units (UUTE), commissioning works, commissioning, commercial registration in a resource-supplying organization, warranty and service maintenance of metering devices.

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Types of metering units

Heating
Heat calculator - 1 pc. Flow meter - 2 pcs. Temperature sensors - 2 pcs. Pressure sensors - 2 pcs.
Hot water There is a nuance: If the hot water is dead-end, then only one metering unit module is installed, this significantly reduces the cost of the DHW heat meter.
Heat calculator - 1 pc. Flow meter - 1 pc. Temperature sensors - 1 pc. Pressure sensors - 1 pc.
Cold water
Calculator - 1 pc. Counter - 1 pc. GSM/GPRS - modem - 1 pc.

Heating- installation of common house, collective heat supply metering devices.

Of course, it is beneficial to install a heat consumption meter, since the monthly amount for heating will be calculated according to the current tariffs and based on the readings recorded by the collective meter. Otherwise, the calculation is made according to the standard using a multiplying factor. In addition, residents apartment building it becomes possible to regulate the consumption of thermal energy in an individual mode using the system automatic regulation.

The composition of the heat meter heating:

Heat calculator - 1 pc.

Flow meter - 2 pcs.

Temperature sensors - 2 pcs.

Pressure sensors - 2 pcs.

Hot water- installation of common house, collective DHW metering devices.

What is the difference between a hot water metering unit and a heat energy metering unit for heating? Basically, it's the same thing. Both metering units include a heat meter with associated electronics, flow meters, temperature sensors, and pressure sensors. However, such a metering unit, as a rule, is cheaper, since it is possible to use a flow meter on the return pipeline (circulation) of a smaller diameter, or, if agreed by the resource supply organization, use mechanical water meters with a pulse output. In certain cases, such a project may be agreed with the RSO.

There is a nuance: If the hot water is dead-end, then only one metering unit module is installed, this significantly reduces the cost of the DHW heat meter.

The composition of the dead-end DHW metering unit:

Heat calculator - 1 pc.

Flow meter - 1 pc.

Temperature sensors - 1 pc.

Pressure sensors - 1 pc.

Cold water- installation of common house, collective cold water metering devices.

Devices that are included in the water metering unit can be of various quality and modifications.

1. An ordinary turntable, a vane flow meter from which readings are taken in the basement - Turbine dry-running cold water meter VSKHN, is designed to measure the volume of cold water according to SNiP 41-02-2003 and drinking water according to SanPiN 2.1.4.1074-01 and SNiP 41-02-2003.
2. The same vane counter with a pulse output, which can be connected to the calculator and through the dispatch system to see the readings on the computer.
3. Full-bore flow meters, induction microprocessor-based flow transducers IPX5 according to GOST 14254-96, GOST R 52931-2008, more accurate and durable, clog less often, because do not have a movable mechanism in the flow part, lower hydraulic resistance. - The best option for the HVS node.

The composition of the cold water metering unit + dispatching:

Calculator - 1 pc.

Counter - 1 pc.

GSM/GPRS - modem - 1 pc.

The order of installation of metering units.

Invite our engineer for an initial inspection of the installation site.

Examination to determine the cost - free of charge!!!

• we obtain technical specifications for the installation of metering devices
• we develop a project and coordinate it with a resource supplying organization
• we weld ready-made modules of metering devices
• we install flow meters, temperature sensors, pressure sensors on the metering unit
• connect metering units to the heat meter
• We program devices and perform commissioning
• organize the admission of the metering unit into operation
• we bring the inspector to the facility and hand over the metering unit to him
• signed "Act of admission of the metering unit into operation" we transfer to you
• From that moment, metering devices were put into operation

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Warranty for the metering unit - 2 years.

7 years for a legal entity, which means that we will complete the work on time, and the guarantee will be fulfilled.

SRO certificate for design work.

SRO certificate for installation work.

Tolerances and certification of personnel.

Service options:

• Training of your employees on the operation of heat energy metering units
• Installing service programs on your computer to control metering devices
• Networking of several metering units to one control room
• Re-registration of accounting nodes when changing the owner or balance holder

Our works:

Comparative cost of instrument kits

for heating metering unit:

1 Calculator + 2 flowmeters + 2 DT + 2 DD

PRICE - more about the prices for devices and the cost of work.

Frequently asked questions about meters:

End of form

Frequently Asked Questions

1. How to install a heat meter?
2. Why do you need to install thermal energy meters on hot water, and not an ordinary water meter?
3. How to get a subsidy for the installation of common house meters?
4. Is it possible to install a heat meter in an apartment?

1. HOW TO INSTALL A HEAT METER?

• To begin with, at the general meeting of owners, it is necessary to make a decision on the installation of a metering unit.

Since the installed metering unit will become common property, then its payment is distributed proportionally to all owners. It is necessary to find out about the existence of subsidies for the installation of metering devices and the possibility of participating in such programs.

• Selecting a contractor.

Work must only be carried out legal entities specialized in this type of activity. The organization must have an SRO certificate for design work and an SRO certificate for construction works. Certification of welders and electricians is desirable.

Sometimes there are situations when a metering unit is installed, money is paid for them, but the heat supply organization does not allow the metering unit to operate. As a rule, this is due to the fact that the mounted node does not correspond to the design decisions, because. the project is carried out by 3 persons “who have not seen the object in the eyes” - the dimensions in the project do not correspond to the actual dimensions of the pipeline sections.

Specialized firms are currently installing turnkey heat meters with their further maintenance - this is the most profitable option for the customer. Such firms quickly get everything Required documents in the power supply organization, optimally build their work, starting with the receipt of technical conditions and ending with the signing of the act of admission to operation. They themselves bring an inspector from the North Ossetia to the accounting center.

It is necessary to find out whether the organization has come to this market for a long time, whether it will disappear tomorrow. The fact that the organization has a website, office and production areas, as well as qualified personnel indicates the serious intentions of this organization.

• Installation price.

The formation of the cost of installing a heat meter is carried out on the basis of an assessment of many factors. These factors include: the complexity of the work and the design itself, its equipment, the cost of metering devices. The calculation of the cost of the metering unit is made individually for each object on the basis of the estimated calculation. Only after a complete survey and approval of the project is the final cost of installing the metering unit determined.

• Obtaining technical conditions in a heat supply organization.

Specifications (TU) for the installation of a heat meter are issued by the local energy supply organization. The specifications indicate the main parameters of the heat supply system and additional requirements that the heat meter must meet. Based on these data, the project of the metering unit is being carried out. Otherwise, readings from metering devices will not be possible to use for commercial settlements. Specialized firms that install metering devices independently receive technical conditions.

• Development and approval of the project.

The design of the metering unit should be carried out by an engineer who will subsequently supervise the work at this facility. Such an engineer has practical knowledge of metering devices, heat supply systems, which is necessary when agreeing on a project and admitting a metering unit.

The organization must have a SRO permit for design work.

• Supply of equipment and acquisition of the object with materials.

According to the project, all necessary plumbing, electrical equipment and heat meters of the required size and brand are purchased. Organizations specializing in the installation of metering devices, as a rule, purchase them from manufacturers at no extra charge.

• Installation and commissioning.

Installation of the metering unit is carried out at any time of the year. When inserting a heat meter in the cold season, it is necessary to monitor the shutdown time of the coolant in order to avoid freezing of the building.

After inserting the devices, it is necessary to call an inspector from the heating network to check the operability of the heat meter and the compliance of the installation with the project documentation. After making sure of compliance, the inspector seals the devices, draws up an act of admission of the metering unit, which must be signed by a representative of the energy supply organization and the owner.

The organization must have a SRO permit for construction work.

• Heat meter service.

After commissioning, it is desirable to put the metering unit on service maintenance, because This is technically complex equipment that requires constant monitoring.

To install metering devices and their further maintenance, you can contact ATK.

2. WHY SHOULD HEAT METERING DEVICES BE PLACED ON HOT WATER AND NOT A CONVENTIONAL WATER METER?

Full accounting of hot water occurs not only in terms of volume, but also in terms of the amount of heat. Therefore, an ordinary water meter (“turntable”), such as is installed in our apartments on cold water, is not advisable, since registration of water temperature parameters is necessary to account for Gcal. Therefore, it is necessary to install a thermal energy metering unit (a set of devices that takes into account several parameters) on hot water.

In some buildings, the hot water supplied from the CHP does not reach the temperatures set by the regulation. With the help of a heat meter, it is possible to see the actual consumption of the amount of heat and the volume of hot water, and accordingly pay only for what is actually received, as well as demand that the water temperature be brought to normal.

3. HOW TO GET A SUBSIDY FOR THE INSTALLATION OF COMMON METERING DEVICES?

Periodically, the state develops programs to assist in the installation of metering devices. Now you can use the fund's money overhaul for the installation of metering stations.

4. IS IT POSSIBLE TO INSTALL A HEAT METER IN THE APARTMENT?

Most of the residential buildings in Russia are buildings with vertical (riser) distribution of heat supply pipes. With this wiring model, several heating risers can pass through the apartment with separate outlets to the radiator or a group of radiators.

Due to the fact that the heat meter must be installed in each of these outlets, this costs a pretty penny. Converting to another heating system, where it will be possible to use only one heat meter, is very expensive, and, as a rule, it is not economically feasible, since the cost of the heat metering system and its payback period in this case will exceed all reasonable limits.

Installation of heat meters in a separate apartment is possible, but today, due to the high cost of heat meters, this is not profitable. Therefore, at present, it is better to pay for the consumed heat according to the readings of the general house heat meter installed in the ITP, which is usually located in the basement of the building.

Or write a question to our specialists:

People are often interested in what an input node (in an apartment) is, what it should be and what should be included in it.

Having received the keys to his new apartment(in a new building) you may notice that the input node will most likely not be made of high quality - the input node is made of not quality material and equipment. The developer does not aim to make an ideal input node, but is limited to a minimum for commissioning an object.

The composition of the water supply inlet in the apartment

The normal input node includes:

• Shut-off valves;
• Leak protection system;
• Coarse filter;
• Water meter;
• check valve;
• Fine filter;
• Pressure reducer;
• In exceptional cases (with poor water quality), you can install a main water filter;
• Distribution manifold;
• Water hammer compensator

Shutoff valves in the apartment

The first thing to start with is the replacement of valves in the apartment. Often the developer uses the most cheap options fittings. It should also be taken into account that due to the low-skilled workforce, there are cases when the valves can be installed incorrectly. For example, any ball valve consists of two parts and must be screwed onto the riser most of, which contains the locking ball itself. This will allow, even in the event of a leak of the stopcock itself, to shut off the water supply, otherwise you will not be able to turn off the water and flood the neighbors.

Our company recommends installing valves from manufacturers such as Bugatti and Oventrop. Even the best shut-off valves periodically need preventive opening / closing of the tap - this avoids the "souring" of the movable mechanism of the tap.

Leak protection system

Even the most reliable and modern water supply system includes connections with gaskets and flexible piping. According to the statistics of insurance companies, these elements are the main causes of leaks in the apartment.

In order to protect yourself, you need to install a leak protection system. The system consists of ball valve with servo drive, control module and sensors. When water gets on the sensor, the system gives a command to close the tap.

It is important to consider that a leak protection system should be installed immediately after the stopcock - this will help minimize the number of unprotected connections.

There is on the market a large number of protection systems, but our company recommends installing the Aquaguard system. It has proven itself well, and the manufacturer provides a good, timely service.

Coarse filter

Often, the quality of the water may not be of the best quality - large particles of dirt can come across in the water, which can disable other devices in the water supply system. For example, some water meter manufacturers void their warranty obligations if this filter is not installed in front of the meter. Depending on the manufacturer, coarse filters come with a mesh cell of 600, 500, 300 microns.

Water meters

An integral part of the input node in the apartment is a water meter. The types of water meters and their methods of operation are described in detail in our other articles, so we will not consider this item in depth.

It should be noted that in Moscow only water meters with a pulse output and an installation length of 80mm are allowed for installation. We recommend using ITELMA water meters.

check valve

A necessary element of the accounting node is check valve, which serves to protect against the reverse flow of water in the water supply system. This prevents mixing of hot and cold riser water (often they have different pressures). It also prevents the water meter from "twisting" when draining water from the riser, so many management companies may not accept a water metering unit without a check valve.

Fine filter

Main water filters

Water hammer compensator

The water hammer compensator allows you to "extinguish" sudden pressure surges during the rapid opening and closing of the mixer, turning off / on the washing and dishwashers, filling valves of toilet bowls.

According to the statistics of insurance companies, most of the flooding of apartments occurs at night. This is due to the fact that with a small intake of water from the riser, the water in the pipes heats up to room temperature, it expands and the pressure in the water supply system rises. This can be prevented by a water hammer compensator.

The water hammer compensator is usually installed at the end of the collector. They are membrane and spring type.

Proper installation of the input node will save you from unnecessary costs and problems. Installation of the input node is not an easy task and it is better to entrust this work to qualified specialists. Our company "Plumber Stepanych" employs experienced and qualified specialists.

Projects of metering units are carried out in accordance with the requirements of clause 7.2 of SP 30.13330.2016 "Internal water supply and sewerage of buildings".
For buildings under construction, reconstructed and overhauled, water metering units should be provided corresponding to the metrological class B ( horizontal installation). When placing apartment meters of cold and hot water on vertical sections of pipelines, meters of metrological class A are used.
The meters are placed in a room with artificial or natural lighting and an air temperature of at least 5 ° C, providing access for reading readings and maintenance.
On each side of the meter (pos. 5), they provide for the installation of shut-off valves (pos. 1, 2) to turn off the water for the time of checking or replacing the water meter. It is allowed to install household (apartment) meters with the installation of one disconnecting device in front of the metering station.
To protect against contamination, a mechanical or magnetic-mechanical filter (pos. 4) is installed before the meter (in the direction of water movement).
If it is necessary to control the pressure in the water supply system, use a pressure gauge (pos. 7)

You can find out the cost of developing a water metering unit project by referring to the relevant sections of our website.

Design and installation standards for water metering units

Drainage of water in case of repair or replacement of the meter is carried out through a tap (pos. 6).
The bypass line of water metering units in cold water systems is designed to pass the fire-fighting water flow and (or) water supply for domestic and drinking needs during the verification of the water meter. The rest of the time, the valve on the bypass line (pos. 3) is sealed in the closed state.
When combining a fire-fighting and domestic drinking water supply, the locking device on the bypass line should be equipped with an electric drive with start-up from buttons installed at fire hydrants, or from fire-fighting automation devices (systems). In case of insufficient water pressure for fire extinguishing in the water supply network of a building or structure, the opening of the locking device on the bypass line must be ensured simultaneously with the start-up of fire pumps.

The diameter of the nominal passage of the water meter is selected according to the average hourly water consumption for the period of consumption (day, shift), which should not exceed the operating consumption according to the passport.
The selected flowmeter should be checked:
- to skip the calculated maximum hourly or maximum second water flow;
- the possibility of measuring the estimated minimum hourly water flow.
If the simultaneous fulfillment of these conditions is not possible, install a combined water meter (with a built-in water flow switching valve) or a meter of metrological class C.

Calculation of water meters, selection of flow meters

The procedure for installing a water meter in a non-residential premises, building

To commission a newly installed water metering unit, it is necessary:
- Submit to the Center for work with subscribers an application for the issuance of technical specifications for the design of a metering unit;
- According to received specifications develop design documentation for the water meter unit;
- In accordance with the project developed on the basis of those. conditions, install the metering unit;
- In order to make commercial settlements according to the meter readings, it is necessary to submit an Application for the admission of a water metering unit to operation to the Customer Service Center.

No matter how cheap cold water is on the bill utilities, a careful attitude to it is necessary, the first embodiment of which is accounting for the volume of water consumption. As a device for metering the consumption of cold water, including a common one, a conventional meter is used - a water meter. The main criteria for choosing an ODPU is the type of meter, the diameter of the pipeline on which the meter is installed, and the nominal flow rate of water, both parameters must be specified in the project documentation. For MKD with an area above 6000 sq. meters, we recommend using turbine-type water meters, although they are more expensive than vane ones, they have much longer uptime and also calibration intervals.

A water meter used as an ODPU is included in the water supply networks according to a certain scheme that meets the conditions for its normal operation and is characterized by the presence of a bypass pipe that provides sufficient water flow for the fire water supply.

In addition to the metering device itself, the composition of the water meter assembly includes straight pipes of the required diameter and length, a mesh sleeve filter with a magnetic core (mechanically filters out foreign inclusions and metal chips, scale), valves, pressure gauges, drain taps. At the same time, the valve on the bypass pipe must have an electric drive that automatically opens the valve for entering the fire water supply.

Typical diagram of the water metering unit of the cold water system

The operability of the bypass valve and its electric drive must be checked at least 2 times a year. In the normal mode of water consumption, this valve is completely closed and has a seal, the safety of which confirms the absence of unaccounted water consumption, which is permissible in case of fire. The resource supplier also seals the metering device and other equipment, the use of which is unacceptable without the knowledge of the supplier. On a monthly basis, when drawing up an act of taking readings from the ODPU, the supplier checks the safety of the seals, which is an indispensable condition for calculating cold water according to the readings of water meters.

Appearance of a typical water meter assembly

Following the water metering unit, booster pumps are installed, which, in turn, also require gate valves, pressure gauges, a check valve and, in addition, rubber vibration isolators. Pumps are installed on reinforced concrete foundations also through vibration-isolating pads. All this equipment is duplicated, in order to avoid its souring and water stagnation, periodic, at least once a month, equipment is switched from working to reserve and vice versa.

In rooms with high humidity(in basements) condensate appears on cold water pipelines, which causes corrosion and premature aging of networks and equipment. To eliminate such phenomena, it is necessary to insulate networks, paint equipment, and ventilate the premises.

The cold water supply network in the MKD is a horizontal pipeline running in the basement, with verticals attached to it - stoics that distribute water floor by floor. On each floor, the cold water network is brought into the apartment by a separate outlet equipped with a shut-off device (ball valve). At this point, the boundary of the common MKD property, all further connections relate to the apartment network and equipment located in the area of ​​​​responsibility of the owner of the premises. On the top floor, after being diverted to the apartment, the HVS riser is muffled (dead-end line). This feature of the cold water supply rate can become an objective reason for water stagnation, with low volumes of its consumption by users on the upper floors. AT modern buildings fire water outlets with a valve and a piece of hose were also brought into the apartments.