Today, the installation of water meters has become a necessity. If you try to calculate the actual water consumption, then make sure that it is significantly lower than what is paid according to the general standard, so it is much more profitable to pay by the meter. The main role in reducing costs is played by the hot water meter, because the payment for heating water is a significant part of utility bills. Let's find out which water meters are better to choose in order to start saving.

Types of counters

We will try to understand the classifications of water meters in order to understand which one is better to choose for.

Water meters can be designed for cold or hot water. They have the same principle of operation and differ in the materials from which they are made. Device for cold water designed for temperatures within 40 ° C, for hot - for temperatures up to 150 ° C.

According to the principle of operation, the counters are divided into:

• mechanical - they have an impeller or turbine connected to the counting mechanism, which is driven by a water stream;
• electronic - in addition to the impeller, they have a special device that, when rotated by a water jet, transmits electrical signals to the summation unit.

There are also vortex, electromagnetic and ultrasonic water meters, which are not usually used in everyday life. We will figure out in which situation it is better to choose a mechanical, and in which - an electronic device.

Mechanical water meters

To account for water consumption in apartments, mechanical water meters are most often installed.

Advantages:

• small size;
• low cost;
• sufficiently high measurement accuracy;
• reliability and maintainability;
• energy independence;
• long service life - an average of 12 years.

Flaws:

• sensitivity to the effects of a magnetic field;
• gradual wear and tear, affecting the reliability of the readings.

To choose a device suitable for specific conditions, you need to know about the varieties of mechanical devices.

• Vane and turbine. Winged can be installed on pipes with a diameter of DN 20, DN 25, DN 32, DN 40, turbine - on pipes of larger diameter, starting from DN 50 and ending with DN 200 (Dn - the diameter of the pipe nominal bore). In the conditions of an apartment, household vane meters are usually used.

• With dry and wet type of action. In "wet" devices, the counting mechanism is in the water, therefore it reacts to the degree of clogging of the flow and has a shorter shelf life. To extend the life of such a device, a filter should be installed in front of it. In "dry" devices, this mechanism is located behind the partition, so it is not affected by pollution and temperatures. The service life of such a device is longer, but the price is correspondingly higher.

• Single jet and multi jet. In multi-jet water meters, the water flow is divided into several jets before reaching the blade. Such meters are better than single-jet meters due to their higher reading accuracy, but they are more expensive.

Separately, we can mention combined water meters that combine vane and turbine devices located on parallel branches. At low pressure, the flow in the combined instrument goes through the impeller, when it increases, the valve closes, and the liquid moves through another outlet with the turbine. Combined meters are used in conditions of significant changes in water consumption.

Counters with pulse output

The above types of devices can be equipped with a pulse output module that converts the readings into an electrical signal supplied to the recording device, which can be located at any distance from the point of water consumption. This means that a smart water meter with a pulse output allows you to place the display for reading in a convenient place, and a hot water meter with a temperature sensor and a pulse output helps to further save money.

How it works? After opening a hot tap, water heated to high temperature, does not arrive immediately. Sometimes, to get really hot water, you need to drain it for a long time. A conventional meter will record the consumption of hot water all this time. A meter with a pulse output and a temperature sensor determines the water temperature - while the water is cold, the pulses are recorded by the cold water adder, the volume of hot water consumption begins to be counted only when it is heated to the desired temperature. Since the tariff for cold water is much lower than the tariff for hot water, it will be more than advisable to choose a meter with a pulse output in order to save money. In the near future, when creating automatic metering systems, it is devices with a pulse output that will be most in demand.

Household electronic water meters

The main competitor of a mechanical water meter is an electronic meter.

Advantages of an electronic device:

• high accuracy of readings;
• possibility of vertical and horizontal installation;
• ease of reading;
• simple dismantling for verification - the mechanical part remains in place, the upper module is handed over for verification;
• long interval between verifications - up to 10 years.

Flaws:

• high price;
• the need for a power source.

Of greatest interest are multi-tariff electronic water meters, such as Archimedes and LV 4T.

The four-tariff meter LV 4T, consisting of a vane module, a temperature sensor and an electronic module, allows you to calculate the actual amount of hot water consumed. Depending on its temperature, the volume value is entered into one of four tariff cells:

• below 40 °C - the water is essentially not hot, there is no heating fee;
• from 40 to 44.9 ° С - 70% of the tariff is paid;
• from 45 to 49.9 ° С - 90%;
• above 50 °С - 100%.

The multi-tariff water meter Archimedes, an analogue of LV 4T, is represented by several models and can be four-tariff and two-tariff. Two-tariff Archimedes considers as hot only that water, the temperature of which exceeds 40 °C. If the temperature of the water from the hot tap is lower, then Archimedes considers it as cold. In situations where the temperature of the water from the hot tap does not correspond to the declared one, meters such as Archimedes and LV 4T pay for themselves in a short time and reduce the cost of utility bills.

Certification and verification

When choosing a flow meter, it is advisable to study the accompanying documents, which should indicate:

• registration number of the device;
• date of manufacture and initial factory verification;
• best before date;
• warranty periods;
• recommended time between .

Attention! The standard periods for periodic verification are 4 years for a hot water meter, 6 years for cold water.

Description:

The procedure for organizing accounting for the consumption of cold and hot water for general house and apartment meters

Appendix 1 to Decree of the Government of Moscow dated February 10, 2004 No. 77-PP

1. Introduction

1.1. This Procedure for organizing accounting for the consumption of cold and hot water according to general house and apartment meters (hereinafter referred to as the Procedure) is introduced in order to streamline the payment by consumers of cold and hot water according to the readings of meters installed in the housing stock of the city.

1.2. This Procedure has been developed on the basis of the main provisions:

Civil Code Russian Federation;

Law of the Russian Federation dated December 24, 1992 No. 4218-1

“On the Fundamentals of the Federal Housing Policy”;

Law of the Russian Federation of April 27, 1993 No. 4871-1

“On Ensuring the Uniformity of Measurements” (as amended by Federal Law No. 15-FZ of 10.01.2003);

Federal Law No. 128-FZ of 08.08.2001 “On Licensing Certain Types of Activities”;

Decree of the President of the Russian Federation of April 28, 1997 No. 425 “On the reform of housing and communal services in the Russian Federation”;

Decree of the Government of the Russian Federation No. 887 of August 2, 1999 “On improving the system of payment for housing and utilities and measures for social protection of the population”;

Subprograms Reforming and Modernizing the Housing and Communal Complex of the Russian Federation of the Federal Target Program "Housing" for 2002-2010, approved by Decree of the Government of the Russian Federation No. 797 dated November 17, 2001;

The main directions and mechanism of energy saving in the housing and communal services of the Russian Federation, approved by the decision of the Government Commission on reforming the housing and communal services of the Russian Federation dated 03.20.1998 No. 3;

Concepts of price and tariff policy in the housing and communal services of the Russian Federation, approved by the Government Commission on reforming the housing and communal services of the Russian Federation on 01/21/1999;

Rules for the use of public water supply and sewerage systems in the Russian Federation, approved by Decree of the Government of the Russian Federation dated February 12, 1999 No. 167;

Rules for the provision of public services, approved by the Decree of the Government of the Russian Federation of September 26, 1994 No. 1099;

Law of the City of Moscow dated March 11, 1998 No. 6 "Fundamentals of Housing Policy in Moscow";

Decree of the Mayor of Moscow dated 23.11.1995 No. 619-RM "On improving the management of the city's housing and communal services";

Decree of the Government of Moscow dated April 16, 1996 No. 349 “On the further improvement of relations for the management of buildings that are in common ownership”;

Regulations on the procedure and conditions for hiring residential premises that are in state and municipal ownership of the city of Moscow, approved by Decree of the Government of Moscow dated January 21, 1997 No. 46;

Decree of the Government of Moscow dated July 28, 1998 No. 566 “On measures to stimulate energy and water saving in Moscow”;

Decree of the Government of Moscow dated December 26, 2000 No. 1009 “On the status of payments for heat and water supply and sanitation in the housing stock of Moscow and measures to improve them”;

Decree of the Government of Moscow dated September 25, 2001 No. 865-PP "On the progress of the reform of housing and communal services in Moscow and the prospects for its development."

2. Basic concepts and terms

For the purposes of this Procedure, the following concepts and terms apply:

2.1. Housing management organization (housing organization):

An organization that owns (full economic management or operational management) the housing stock;

An organization whose responsibilities include providing consumers with utilities or performing the functions of an executor (including partnerships and other associations of owners of residential and non-residential premises in residential buildings);

An organization that performs under a contract the functions of managing the housing stock, providing or ensuring the provision of public services to citizens and legal entities.

2.2. Contractor - an organization that manages the housing stock (housing organization).

2.3. Supplier - an organization of any organizational and legal form and form of ownership that has concluded contracts with the contractor for the supply of cold and hot water, Wastewater.

2.4. A specialized organization is a contracting organization licensed to repair common house and apartment cold and hot water meters.

2.5. Consumer - individual(citizen), legal entity or unincorporated entrepreneur - owner, owner, tenant or tenant in the housing stock, using the services of hot, cold water supply and sewerage, as well as services for the repair and maintenance of water meters.

2.6. EIRC - Unified Information and Settlement Center - an organization that has entered into an agreement with the directorate of a single customer (or a structural unit of the directorate of a single customer), which charges, manufactures (prints) and delivers a single payment document to the consumer for payment.

2.7. A single payment document (EPD) is a document for payment by the consumer of housing and communal services.

2.8. Services of hot, cold water supply and sewerage - utilities that the contractor provides to consumers.

2.9. Services for the repair and maintenance of water meters - services that the contractor provides to consumers by concluding contracts with specialized organizations.

2.10. The housing fund is the totality of all residential and non-residential premises in residential buildings that are managed by a housing organization.

2.11. Dispensing hot and cold water and receiving waste water is the activity of suppliers in supplying contractors with cold and hot water, receiving waste water.

2.12. A water meter is a technical device designed for measurements, having normalized metrological characteristics, reproducing and / or storing a unit of physical quantity, the size of which is assumed to be unchanged (within a specified error) for a certain period of time, and is allowed to be used for commercial metering of hot and cold water.

2.13. A common house water meter is a meter installed at the inlets of hot and cold water supply systems into a residential building.

2.14. An apartment water meter is a meter installed at the inlets of hot and cold water supply systems into a residential or non-residential building.

2.15. Quantity of water - physical volumes of water (cubic meters) payable by consumers of cold and hot water, measured by water meters in the housing stock.

2.16. Cold water is drinking water that meets established sanitary standards and requirements.

2.17. Hot water - drinking water after heating to a temperature established by the standards, which meets the established sanitary standards and requirements.

2.18. Additional volume - the volume of cold and / or hot water paid by consumers located in the building, all apartments of which are equipped with cold and hot water meters, in the event of a positive difference (no more than 5% of the indication of common house water meters) between the volume of water determined by according to the indications of a common house meter for cold and / or hot water and the total volume of cold and / or hot water, respectively, used by all consumers and for general house needs. The additional volume is determined in accordance with clause 5 of the Methodology for the distribution of volumes and costs of cold and hot water and sanitation services between subscribers and consumers based on the readings of water meters.

3. General provisions

3.1. This Procedure regulates relations between contractors and consumers in the housing stock of Moscow for payment for cold and hot water supply, sewers in the following cases:

3.1.1. Full equipment of the building:

a) common house metering devices for cold and hot water (at the entrances to the building of pipelines of cold and hot water supply systems);

b) metering devices for cold and hot water in all residential premises of the building;

c) metering devices for cold and hot water in all non-residential premises of the building.

3.1.2. Equipping the building with common house metering devices for cold and hot water with the installation of apartment metering devices in part of the apartments, as well as in part of the non-residential premises of the building.

3.1.3. Equipping the building with common house metering devices for cold and hot water in the absence of apartment metering devices for cold and hot water in apartments and non-residential premises of the building.

3.1.4. Installation of apartment meters for cold and hot water in the apartments of the building,

as well as metering devices for cold and hot water in the part of non-residential premises of the building in the absence of common house metering devices for cold and hot water in the building.

3.2. In all cases provided for in paragraph 3.1 of this Procedure, payment for sewerage services is made in accordance with the amount of water (drainage) equal to the sum of the volumes of consumption of cold and hot water, established according to the readings of metering devices (general house, apartment).

3.3. In the absence of water metering devices (general house, apartment), utility bills between the contractor and the consumer are made according to the water consumption standards approved by Decree of the Government of Moscow dated 28.07.1998 No. 566 in the manner established by Decree of the Government of Moscow dated 26.12.2000 No. 1009.

4. The procedure for installing water meters, their repair, maintenance and verification

4.1. The metering system for cold and hot water supply services in the housing stock of Moscow is provided by installing common house metering devices for cold and hot water at the inlets of pipelines into the building, as well as apartment devices - in apartments or non-residential premises of buildings.

4.2. In newly constructed residential buildings, metering devices (common house and apartment) are installed by general contractors in the process of building construction at the expense of construction estimates. At the same time, water meters with a pulse output should be connected to a single complex for energy consumption metering.

4.3. The installation of common house metering devices in the existing housing stock of the city is carried out by contractors at the expense of their own and attracted (bank loans) funds, funds of consumers of cold and hot water supply services.

4.4. The procedure for installing common house water meters in residential buildings and facilities social sphere at the expense of the city budget, the funds of the target budget fund for the development of the territory and the funds of suppliers is determined by the Moscow Government.

4.5. Acquisition and installation of apartment metering devices for cold and hot water is carried out by contractors on the basis of applications from consumers at their expense.

If it is technically impossible to install an apartment water meter, the contractor issues a reasoned opinion to the applicant.

Installation of apartment water meters is carried out by the contractor within 30 (thirty) days from the date of payment for the work by the consumer.

4.6. Repair, maintenance and verification of common house and apartment metering devices for cold and hot water is carried out by the contractor under an agreement with a specialized organization licensed to repair these devices (common house water meters that are on the balance of suppliers - under an agreement with the supplier-balance holder).

4.7. Installation, repair and / or maintenance of water meters by consumers is not allowed.

4.8. The proper functioning of the cold and hot water consumption metering system in the housing stock is ensured by the contractor through regular maintenance (in accordance with the technical documentation for water meters), scheduled (at the end of the calibration intervals for installed water meters) and unscheduled (at the request of the supplier, contractor and / or consumer) state verification of water meters, elimination of identified problems, malfunctions, timely replacement of failed devices, their components and parts.

4.9. For installation in the housing stock, water meters are allowed from among those entered in the State Register of Measuring Instruments of the State Standard of the Russian Federation. Choice of nominal flow rate and caliber (diameter) water meters, as well as other parameters of water meters must be produced in accordance with the requirements of SNiP 2.04.01-85 * "Internal water supply and sewerage of buildings", technical documentation (passports) of devices in accordance with the Regulations (sections 7 and 8 of the Order).

4.10. Cold and hot water metering devices are part of the engineering equipment of the housing stock and cannot be dismantled from the installation site (except when it is necessary to check them, repair or replace faulty devices).

4.11. Ensuring the safety of water meters and seals on them is the responsibility of the consumer (executor - in relation to common house meters).

4.12. When installing water meters on the supply and return (circulation) pipelines of hot water supply systems of the housing stock, the amount of hot water payable is determined as the difference between the amounts of water that have passed through the meters on the supply and circulation pipelines.

4.13. If there are transit pipelines of hot and cold water supply systems in the housing stock that have tie-ins of pipelines of sectional water supply systems, the amount of hot and cold water payable can be determined as the difference between the amounts of water measured by water meters installed at the inputs to buildings and outputs from the building of pipeline systems supply, or measure the water consumption of each section of the building.

4.14. The amount of cold water payable in the housing stock with a combined system of domestic drinking and fire fighting water supply should be determined according to the readings of water meters installed at all pipelines of such a system entering the building. At the same time, check valves or water meters should be installed on all pipelines, the design of which provides reliable measurement of the forward and reverse flows of water.

4.15. Quality control of work on maintenance and repair of metering devices is carried out by the State Housing Inspectorate of Moscow together with Rostest-Moscow and / or other organizations that are duly accredited for the right to conduct state verification of water meters. At the same time, the state verification of apartment water meters is carried out at the place of their installation in accordance with the requirements of MI 1292-99 (GSOEI. Water meters. Method of verification.

GNMTs-VNIIR Gosstandart of the Russian Federation, 1999), and the assessment of the quality of measurements and the adjustment of the value of the calibration interval - in accordance with the requirements of MI 2293-94 (GSOEI. Methodology for selective control of metrological characteristics during the operation of cold and hot water meters in Moscow. VNIIMS Gosstandart Russian Federation, 1994).

5. The procedure for payment by the consumer for the services of hot and cold water supply and sewerage according to the readings of metering devices

5.1. The consumer pays for the services of cold and hot water supply, sewerage according to the testimony of apartment water meters from the moment they are put into operation. The commissioning of the metering device is formalized by a tripartite act signed by the contractor, a specialized organization and the consumer.

5.2. The procedure for payment by the consumer for the services rendered to him is determined by the contract concluded in compliance with the principle of voluntary expression of the will of the parties. The contract may provide for the procedure for payment for cold and hot water, both according to meter readings taken monthly, and according to the average calculated indicator, followed by reconciliation of the actually allocated resource and calculations at least once every six months.

At the same time, the terms of the contract should provide for such terms for the fulfillment of obligations by the parties that will allow the EIRC to organize work to include the amount payable in a single payment document and deliver it to the consumer for payment, and the consumer to pay for the services rendered no later than the 10th day of the month following for the settlement.

5.3. Consumers, in whose apartments or non-residential premises cold and hot water meters are installed and put into operation, are not entitled to refuse to pay for hot and cold water supply, sewerage services according to the readings of water meters.

5.4. Consumers in whose apartments or non-residential premises water meters are not installed or not put into operation:

If there are common house water meters in the building, they pay for water supply and sewerage services in the amount determined in accordance with the Methodology for the distribution of volumes and costs of cold and hot water and sewerage services between subscribers and consumers based on the readings of water meters;

If there are no common house water meters in the building, they pay for water supply and sewerage services at the rates established by the Moscow Government (citizens), tariffs and standards for the relevant consumer groups (legal entities and entrepreneurs without forming a legal entity).

5.5. Consumers pay monthly for the services of the contractor for repair and maintenance:

General house metering devices for cold and hot water at tariffs approved in the prescribed manner;

Apartment metering devices for cold and hot water at tariffs determined by the housing organization, but not higher than the limit (maximum) tariffs for these services approved in the prescribed manner. These payments are included by the executors (EIRC) in separate lines in the EPD.

5.6. The services of the contractor for the repair and maintenance of water metering devices are subject to mandatory payment by consumers from the moment the metering device is put into operation (according to the act), regardless of the fact of using the services of cold and hot water supply, sewerage.

6. Rights and obligations of performers and consumers in the instrumental metering of the consumption of cold and hot water

6.1. The contractor is obliged:

6.1.1. At the request of the consumer, conclude contracts with the contractor for the installation of cold and hot water metering devices and install them in the consumer’s apartment or non-residential premises (if technically possible) within the time period specified by this Procedure.

6.1.2. Ensure timely commissioning of cold and hot water metering devices installed in the consumer’s apartment or non-residential premises.

6.1.3. Ensure the provision of services to the consumer for the repair and maintenance of cold and hot water meters by concluding an agreement with a specialized organization licensed for this type of activity.

6.1.4. From the moment cold and hot water metering devices are put into operation, make settlements with the consumer for the services of cold and hot water supply, sewerage according to the indications of these devices.

6.1.5. Ensure timely accrual of payments to consumers for services of cold and hot water supply, sewerage, services for the repair and maintenance of metering devices, collection and processing of information on the removal of readings from water metering devices by consumers, as well as the formation of the UPD and its delivery to consumers.

6.1.6. Periodically (but at least once during a calendar year) monitor the correctness of the readings of residential water meters by consumers and, if necessary, adjust their payments for cold and hot water supply, sewerage.

6.1.7. Require contractors to properly perform installation, repair and maintenance of water meters.

6.1.8. Provide the necessary conditions for the economical use of cold and hot water in the housing stock by timely elimination of damage to sanitary appliances and water fittings in apartments and non-residential premises of consumers (at their request and inspection results), including by installing new types of water-saving technical equipment and devices.

6.1.9. Ensure the economical use of water for general house needs and install metering devices in places where water is drawn for these purposes (for watering green spaces, filling ice rinks, cleaning stairwells, hallways, corridors, adjacent areas), as well as promptly eliminate any water leaks from pipelines systems of cold and hot water supply of housing stock.

6.1.10. Timely provide the consumer with information about changes in tariffs, as well as, at the request of the consumer, provide him with information about the readings of common house meters and data on water consumption for general house needs.

6.2. The performer has the right:

6.2.1. Include in payments and require consumers to pay for the cost of an additional volume of water determined in accordance with the Methodology for the distribution of volumes and costs of cold and hot water and sewerage services between subscribers and consumers based on the readings of water meters, as well as payment for repair and maintenance of devices water accounting.

6.2.2. Require extraordinary metrological verification water metering devices in case of doubts about the reliability of measurements, as well as to require timely replacement of inoperative devices. When confirming the reliability of measurements in accordance with the established procedure, payment for the verification of water meters is made by the contractor.

6.2.3. Require free access of authorized representatives of the contractor and the Moscow Housing Inspection to apartments and non-residential premises of consumers (after prior notification and agreement on the timing of the visit) to monitor the performance of water meters and reconcile their readings with the data of payment documents, as well as verify water meters, repair them and service.

6.2.4. Check the correct installation and operation of sanitary appliances and water fittings, the safety of seals on water meters.

6.2.5. Determine the amount of payments for cold and hot water, sewerage in the amount determined by the capacity of the pipeline of cold and / or hot water with a diameter of 15 mm at a speed of water movement in it of 0.3 m / s and the action of a full section for 8 hours a day for the entire period from the day of the previous control check until the damage is repaired and the apartment water meters are put into operation in the following cases:

Violations of the seal on metering devices;

Damage to metering devices due to the fault of the consumer;

The consumer does not allow representatives of the contractor to enter an apartment or non-residential premises for a control check of meter readings;

The consumer does not allow representatives of the contractor to enter the apartment or non-residential premises for the repair, maintenance or state verification of water meters;

Manipulating the consumer with the readings of water meters.

6.3. The consumer is obliged:

6.3.1. Provide free access to the apartment or non-residential premises occupied by him for authorized representatives of the contractor and the Moscow Housing Inspection (after prior notification and agreement on the timing of the visit) for the repair and maintenance of water metering devices, carrying out work on their technical and metrological maintenance, monitoring meter readings.

6.3.2. Ensure the safety of water metering devices installed in apartments or non-residential premises and seals on them, pay for the repair and / or replacement of metering devices if it is established that their damage or violation of seals occurred through the fault of the consumer.

6.3.3. Pay for the services of cold and hot water supply, sewerage according to the readings of common house and apartment meters, as well as services for the installation, repair and maintenance of water meters in the manner and terms established by this document.

6.3.4. Immediately inform the contractor about the malfunction of cold and hot water meters installed in the apartment or non-residential premises, damage to the seals on them.

6.4. The consumer has the right:

6.4.1. Pay for the services of cold and hot water supply, sewerage according to the readings of water meters, adopted in the prescribed manner for commercial accounting.

6.4.2. Require the contractor to provide proper and high-quality services for cold and hot water supply, sewerage, as well as services for the repair and maintenance of metering devices.

In case of established and documented violations of service quality standards, demand a commensurate reduction in payments for services.

6.4.3. Require from the contractor timely information on changes in tariffs, as well as information on the readings of common house meters and data on water consumption for general house needs.

6.4.4. Require the contractor to economically use water for general house needs, to eliminate, at the expense of the contractor, leaks of cold and hot water from pipelines of engineering equipment systems of a residential building.

6.4.5. Require the contractor to provide, within the established time limits, the necessary payment documents for payment for services of cold and hot water supply, sewerage, as well as services for the repair and maintenance of water meters.

7. Regulations for the selection of types of cold and hot water meters for installation in apartments of residential buildings

For installation in the housing stock of the city, it is allowed to use heat meters, vane meters for cold and hot (up to 90 ° C) water with a counting mechanism isolated from water (dry meters) that meet the following requirements:

7.1. The parameters of metering devices comply with GOST R 50601 and 50193 (metrological class A - for installation on vertical pipelines, class B - for installation on horizontal pipelines).

7.2. The type of metering devices must be approved by the State Standard of the Russian Federation and entered in the State Register of Measuring Instruments. The metering device must have a passport, a certificate of conformity issued by the Certification Body accredited by the State Standard of the Russian Federation.

7.3. In accordance with the description of the type of metering devices, they can be installed in a horizontal and vertical position.

7.4. Rated costs of cold and hot water meters:

1.5 m 3 / h for apartments with one input of the cold and one input of the hot water supply system;

1.0 m 3 / h for apartments with two inputs of cold and hot water supply systems, as well as metering devices installed in front of single water-folding devices and in places of water intake for general house needs.

The nominal diameter of apartment water meters, regardless of the nominal water flow rate, is 15 mm, the length of the meter (without connecting fittings) is 80 mm. Metering devices installed in the housing stock must have a built-in check valve.

7.5. The reliability of metering devices is confirmed by accelerated wear tests (in cyclic load mode) carried out in accordance with the requirements of GOST R 50193.

7.6. The reliability of protection of metering devices from manipulating their readings using external constant magnetic fields and / or the effectiveness of the magnetic impact indicator is confirmed by tests carried out during the approval of the type of metering device by the State Standard of the Russian Federation or during certification in the GOST R system. The metering device or during certification in the GOST R system .

7.7. When released from production, the manufacturer provides primary verification in accordance with the requirements of GOST 8.156-83 (p. 3) and MI 1592-99.

7.8. The technical documentation (passport) of cold and hot water meters indicates that the rate of change in the average integral error of cold and hot water meters during their operation complies with the requirements of GOST 8.156-83 (clause 3.4.8) and MI 1592-99.

7.9. The calibration interval established by the State Standard of the Russian Federation when approving the type of metering devices is at least 5 years for cold water meters, and at least 4 years for hot water meters.

7.10. The possibility of metrological support of metering devices during their operation, including the possibility of verification of metering devices at their installation sites in accordance with the requirements of MI 1592-99, is confirmed by local bodies of the State Standard of the Russian Federation.

7.11. The warranty period, during which the supplier of water meters and a specialized organization providing services for the installation and maintenance of water meters, replaces meters free of charge or repairs them (in the absence of consumer fault), is at least 2 years from the date of installation of meters. The calibration interval should be counted from the date preceding the installation of metering devices by no more than 2 months.

7.12. For installation in housing stock equipped with automated systems control of energy consumption, cold and hot water metering devices must have permanent or removable (installed or replaced during operation) devices for generating electrical impulses with a frequency proportional to the water flow through the metering device (pulse sensors, impulse price 1, 10 or 25 l). Any residential hot and cold water metering devices must have built-in pulse preparation systems (magnets) and the ability to install / replace removable pulse sensors during operation.

7.13. Water metering devices, the design of which (electronic units and / or electronic units repeating readings) ensures the storage of measured water volumes for a fixed date in memory, should be installed on a single date for storing meter readings for the settlement (for example, July 1) of each year, which allows draw up reasonable annual balances of water supply and consumption in a building, in a microdistrict.

7.14. As part of the installation units of apartment water meters, it is necessary to provide ball valves or valves with ceramic washers for reliable shutdown of water supply networks of apartments - water meters, pipelines, water fittings, as well as filters (mesh) to protect meters from pollution. Filters must have a design that ensures their sealing after installation to prevent water parsing without measurement by metering devices. It is allowed to install group filters on the risers of the internal hot and cold water supply systems of the housing stock.

8. Regulations for the selection of types of cold and hot water metering devices installed on water supply inlets to residential buildings

Installation and operation of water meters and its accounting is determined by the rules for using public water supply and sewerage systems in the Russian Federation.

8.1. The parameters of metering devices must comply with the requirements of GOST R 50601 "Meters drinking water winged. General specifications” and 50193 “Measurement of water flow in closed channels. Counters of cold drinking water.

8.2. The type of metering devices must be approved by the State Standard of the Russian Federation and entered in the State Register of Measuring Instruments.

8.3. In accordance with the "type description", the installation of metering devices must be carried out in a horizontal, vertical and inclined position.

8.4. When selecting metering devices installed at water inlets to residential buildings, one should be guided by:

SNiP 2.04.01-85* p. 11.2–11.8 "Internal water supply and sewerage of buildings";

Methodology of State Unitary Enterprise "MosvodokanalNIIproekt";

NM-118-98 part 2 section 16.2001. A methodology for choosing the calculation and placement of commercially manufactured water meters - to identify pressure losses in metering devices at the corresponding second flow rates.

8.5. The reliability of metering devices must be confirmed by accelerated wear tests (in cyclic load mode) carried out in accordance with the requirements of GOST R 50193 “Measurement of water flow in closed channels. Counters of cold drinking water.

8.6. The reliability of protection of metering devices from manipulation of their readings using external constant magnetic fields and / or the effectiveness of the magnetic impact indicator must be confirmed by tests carried out when approving the type of metering device or certification of metering devices in the GOST R system.

8.7. Upon release from production, the manufacturer must provide primary verification in accordance with the requirements of GOST 8.156-83 “Cold water meters. Methods and means of verification” and MI 1592-99 “Method of verification. Vane water meters.

8.8. The technical documentation (certificate) of cold and hot water meters should indicate that the rate of change in the average integral error of cold and hot water meters during their operation complies with the requirements of GOST 8.156-83 “Cold water meters. Methods and means of verification” and MI 1592-99 “Method of verification. Vane water meters.

8.9. The calibration interval established by the State Standard of the Russian Federation when approving the type of metering devices should be at least 4 years for cold and hot water meters.

8.10. The possibility of metrological support of metering devices during their operation, including the possibility of checking meters on the spot

installations in accordance with the requirements of MI 1592-99 “Method of verification. Vane water meters”, must be confirmed by the local authorities of the State Standard of the Russian Federation.

8.11. Warranty period of operation within 12 months from the date of commissioning, but not less than 18 months from the date of manufacture.

8.12. Cold and hot water metering devices installed at the water supply inlets to residential buildings should be provided with pulse outputs in accordance with MGSN 3.01-01 (Residential buildings).

8.13. Water meters, the design of which (electronic units and / or electronic units - repeaters of indications) ensures the storage of measured volumes of water for a fixed date in memory, should be installed on a single date for storing meter readings for the settlement (for example, July 1) of each year, which allows you to draw up reasonable annual balances of water supply and consumption in a building, in a microdistrict.