From internal pipelines, drains are transported by external ...
For utilities, winter always comes abruptly. To prevent this joke from becoming a reality, the preparation of heating systems for the winter season should be included in your annual autumn plans. A full range of preparatory work is impossible without maintenance (crimping) the system and the preparation of relevant documents.
If necessary, the construction company LLC DESIGN PRESTIGE will deal with all the details of this complex process.
WHAT IS INCLUDED IN THE PREPARATION OF HEATING SYSTEMS?
The first thing that every caring owner needs to do is flush the heating system. This action will help to identify even minor connection failures. Flushing is carried out by one of three methods:
- Hydraulic flushing. It is the simplest. It is enough to wait for heavy rains and create a high pressure of cold water supply in the system.
- Hydropneumatic flushing. Under high pressure, a coolant with compressed air enters the system. Thus, the room heating system will be cleaned of its main enemy - limescale.
- Chemical flushing. It uses special compounds that effectively dissolve pollutants and bring them out.
Pressure testing is a comprehensive hydraulic test, which is required not only when preparing the premises for the heating season, but also in the following cases:
- after installation of heating equipment;
- before putting the pipeline into operation;
- upon completion of overhaul;
- after reconstruction of ITP;
- when replacing shutters / gate valves.
PREPARATION FOR THE HEATING SEASON OF INDIVIDUAL HEAT DEVICES
Preparation of heating systems necessarily consists of operations:
- preparation of safety as well as check valves;
- their health checks;
- monitoring the health of the temperature controller, manometers and thermometers;
- health checks stop valves;
- stuffing box packing;
- inspection and troubleshooting of threaded connections;
- washing mud filters and filters.
Preparing buildings for the heating period will not do without diagnosing the health of the water meter unit. It is he who determines the flow of water and provides all the data to the water utility. To check it, first the condition of all components is inspected, and then the unit is checked for defects and compliance with the requirements.
The construction company MontazhSpetsStroy will carry out these and other preparatory work, as well as draw up estimates and other documentation on working issues. We offer quality services of professionals in Moscow at an affordable cost. The volumes and prices of work will be announced by the specialist after visiting the client.
Having decided to prepare heating systems for the heating season, you will protect yourself from emergency situations and guarantee a warm winter. For consultation and ordering a service, call the numbers indicated on the website or write to the company’s e-mail.
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Heating Service - Service
heating season *
1. System inspection.
2. Flushing the heating system from deposits and sludge using a hydro-pulse
(hydropneumatic) installation. (chemical - if necessary)
3. Chemical flushing of the heat exchanger (if any).
4. Cleaning filters, sludge traps.
5. Pressure testing (pneumatic test)
6. Elimination of defects in the heating system detected during crimping.
7. Pressure testing (hydraulic testing) of the system to prevent emergency situations during heating season.
8. Elimination of defects found during crimping.
9. Replacement or calibration of measuring instruments.
10. Check or replace shutoff valves.
11. Checking or replacing safety valves.
12. Restoration of thermal insulation of pipelines.
13. Pump maintenance.
14. Painting and marking of pipelines.
* - the list of works is optional and may be changed depending on
requirements of the customer or heat supply organization.
Preparation for the heating season includes a whole range of measures that are taken to ensure the full and effective operation of all systems, for example, crimping the heating system.
The company "ProfStroy" provides a full range of necessary services, which includes both the maintenance of equipment and the preparation of the necessary documentation accompanying the work. Since 2005, the company has been providing an expanded package of services.
Preparation for the heating season and pressure testing of heating systems, performed by a specialized company, is carried out promptly and efficiently, in accordance with established technological standards. The use of professional equipment and tools guarantees high efficiency and speed of work. Pressure testing of the pipeline, setting up boilers and other work will be carried out strictly on time.
Geography of services:Moscow and Moscow region, Novgorod region, Vladimir region, Ryazan region, Tver region, Tambov region, Yaroslavl region.
Our company’s specialists are testing the water supply system - a hydraulic test of heating systems using modern equipment, which allows us to check the readiness of the equipment for operation. These measures are usually carried out after the commissioning of new systems. Pressure testing of heating is also necessary after repair or replacement of the pipeline, after maintenance work on the maintenance equipment in preparation for the heating season, replacement of risers and fittings, after the installation of the system is completed.
Your building needs to be prepared for the heating season ?!
Get an act of subscriber readiness for the heating season from district heating systems ?!
The company "ProfStroy" solves the "turnkey" task on its own without the involvement of subcontractors.
More than 11 years of experience of the Company, provide a guaranteed result.
Invite our specialist for a free consultation on pressure testing of heating networks, preparing the building for the heating season and maintenance, or get advice by phone / 495 / 730-40-75, 234-61-61
Today, the company "ProfStroy" provides the following services for the preparation of real estate for the heating season:
1. Cleaning the filters.
2. Cleaning the sump.
3. Replacement of stuffing box packing in stop valves.
4. Flushing the heating system.
5. Flushing heat exchangers.
6. Hydraulic tests of the central heating station (ITP), elevator unit, visual inspection.
7. Hydraulic tests of the heating system, ventilation, DHW (pressure testing).
8. Visual inspection of the participle systems.
9. Calibration of measuring instruments.
10. Verification, diagnostics of automation.
11. Checking the settings of the balancing valves.
12. Painting of pipelines.
13. Restoration of thermal insulation.
14. Production of identification plates.
15. Restoration of marking on pipelines.
16. Installation of emergency jumpers
17. Balancing the heating system.
18. Delivery of the object and receipt of the Act of readiness of district heating systems.
19. Resolving issues with inspection bodies.
All declared Works are carried out by the PROFSTROY Company employees without involving subcontract organizations.
Ahead is autumn and winter and we all want to live and work warmly!
Save the heat of your building - install a thermal curtain!
We have been successfully implementing heat conservation projects with proven manufacturers for over 9 years: Teplomash, Tropic, Frico, Ballu, Thermoscreens, Rosenberg, General Climate.
The warmth of their premises is trusted by supermarkets, office centers, banks, restaurants and other real estate.
Experienced heating engineers will calculate and select effective energy-saving equipment for you.
Call us and order calculation and installation of thermal curtains!
Sincerely, Project Manager, PROFSTROY LLC
Bakastov Evgeny Vladimirovich
Mob .: 8 903 129 12 99
Office: +7 495 730 40 74
234 61 61 (multi-channel)
The first half of autumn is not only the time for gardening, but also the comprehensive preparation of the house for the winter. To winter in warmth and comfort, the first thing you need to do is prepare the heating system for the heating season. Do not delay with this preparation, because cold often comes suddenly and not on the calendar.
The heart of any central heating system is a heat source, most often a boiler. The heat carrier is heated in the boiler, which is then supplied to the premises and gives it its heat. As a coolant in liquid systems, antifreeze or ordinary water is used.
Antifreeze - it is a non-freezing fluid. Typically, antifreezes consist of water and glycol with various additives. Such a solution does not freeze to certain negative temperatures. The more glycol, the lower the freezing point of antifreeze. The advantage of antifreeze over ordinary water is obvious: the system with the boiler turned off will not burst if the temperature drops below zero. However, this advantage is more relevant for seasonal cottages than for houses in which they live year-round.
There are two types of liquid heating systems: open and closed. But the main difference between these systems is the principle of circulation of the coolant. In open systems, water circulates due to convection: less dense heated masses rise up, and cooled ones fall down. In closed systems, the circulation of the coolant is forced, and it is carried out by a circulation pump.
In order to avoid rupture of pipes and radiators, closed-type systems are equipped with a membrane expansion tank. If in open systems the expansion tank is installed at the highest point and is an open vessel, then in closed systems the expansion tank is completely sealed. Volume compensation in closed systems occurs in it due to the operation of the elastic membrane. The possibilities of the membrane are not unlimited, therefore it is very important for the tank volume to be correctly selected for each specific system.
In addition to accepting the displaced volume of the heated coolant, the membrane tanks in closed heating systems also save equipment from water shocks. Therefore, before starting such a system, you must make sure that the pressure in the expansion tank corresponds to the nominal pressure. If the pressure drops below normal, then it is raised by a car pump. For pumping, the membrane tanks have a standard nipple.
Before each heating season, it is expected to carry out routine equipment work. Immediately you need to make a visual inspection of the system for damage and possible leaks. You also need to check the operation of all valves - it must open and close. If the taps or valves are acidic, then they need to be repaired or replaced with new ones.
In closed systems, pressure testing is not necessary to detect leaks. A certain pressure is already present there, and if it has fallen, then there are most likely leaks. It is not difficult to find them either - just pump up the membrane tank and visually inspect the connections. Most often, leaks occur on the joints. The resulting drops, puddles, wet spots - all this indicates a depressurization. However, there are hidden leaks that can be detected only at maximum pressure. To do this, carry out a test run of the system. If leaks are found, it is necessary to eliminate them by replacing the seal or repairing the connection (soldered pipes).
In open systems, depressurization occurs at least, despite the fact that they do not have any pressure. Before each start, it is necessary to check the liquid level in the expansion tank. For this, at the end of the heating season, a mark is made of the residual water level in the tank, taking into account the temperature. Control measurement of the coolant level must be carried out at the same temperature.
Most often, in open heating systems, ordinary water is flooded. In such cases, there are no problems with topping up. If antifreeze is poured into the system, then a similar composition should be added. Not only the type of antifreeze should converge, but also its concentration.
New antifreeze can be added only with full compatibility with the old. In the event of an antifreeze conflict, some of the components may precipitate, and then it will not be completely antifreeze. If there is no confidence in the compatibility of antifreezes, and there is no time for experiments, it is better to add pure distilled water or drain the old antifreeze and fill in a new one. In general, manufacturers recommend completely changing the antifreeze in the system every six seasons, i.e. every six years. If the replacement is made with antifreeze of the same brand, then flushing the system can be omitted.
Checking the pressure in the heating system
In closed systems, before starting, it is necessary to measure the pressure using a pressure gauge, which must be installed on the pipeline near the boiler. The pressure should be between 1-1.5 bar. If the pressure is less, then the volume of the coolant has decreased and it needs to be replenished. Slight volume loss over time is normal. They are usually made up by adding water.
A certain problem when starting up the system is air congestion. There are several reasons for the formation of such traffic jams:
- gas dissolution. Liquid heating systems in private homes are most often filled with plain water. With increasing pressure, the solubility of gases in water increases. Thus, some air may enter the system;
- due to diffusion. Plastic pipes without a metallized layer are able to pass air oxygen. In order to avoid the penetration of gases into the system, the heating pipes must have an anti-diffusion layer;
- due to filling the system too fast. When water is poured into the system, air bubbles can enter the system, which then turn into air jams. Therefore, the coolant must be filled slowly, while allowing air to escape from the distributors and radiators;
- depressurization. If the joints are not tight, air may enter the system.
Detect air in the radiator is not a big deal. If there are no plugs, the heater is heated evenly. If any part of it is colder - there is a cork and you need to blow it. The presence of air in the system can also be accompanied by gurgling and other characteristic sounds. The air in the radiators is also harmful because it significantly accelerates corrosion, and if it walks around the system, it can lead to failure of the circulation pump.
Air Removalproduced by turning the Mayevsky crane, which crashes into radiators. It is opened with a key or a screwdriver, depending on the model. If water immediately flows continuously from the tap, then there is no air in the radiator, and the tap can be closed. If there is an air plug, then hissing first occurs, and water begins to flow only after all the air has escaped.
Closed systems are equipped with an automatic air separator. These devices protect the system from air ingress both during filling and during operation. It is desirable that air separators be installed in all parts of the system, namely: the section of the boiler, manifold, radiators, as well as at the highest points of the risers.
Flushing the heating system
The need for washing arises when pouring a new antifreeze, when there is no full confidence in its compatibility with the old. But also such a need may arise for other reasons. For example, the formation of scale inside radiators and other elements in contact with the coolant. The presence of scale may have the following symptoms:
- uneven heating of radiators;
- decrease in boiler efficiency (energy overrun;
- increase the system warm-up time at startup.
The causes of these symptoms may be different, but the condition of the pipes and radiators must be checked first of all. Just 1 mm of scale reduces thermal conductivity by 8%, and 8-9 mm - by half. Significant deposits and do work as a thermal insulation, and in addition are able to block the coolant access to some sections of the radiators. In addition, deposits often cause the so-called otulins and fistulas, which ultimately leads to depressurization of the system. Dirt on the inner surfaces of pipes and radiators also becomes a haven for bacteria, some of which increase corrosion.
They get rid of scale by hydropneumatic flushing. It is problematic to do it yourself, because special equipment is needed. Professional flushing is as follows: a water-air mixture is supplied to the system under a pressure of about 6 atm. by means of a compressor, as a result of which air bubbles destroy the layers. Flushing the system brings it almost to its original state, due to which the boiler reaches its rated efficiency, and the system itself returns to normal operation. But even such an effective procedure does not eliminate scum and other deposits forever. It will need to be carried out regularly. The frequency of flushing depends on the quality of the water and the mode of operation of the system. On average, flushing is performed once every 3 years after or before the heating season.
Check the chimney
It is very important to audit the flue duct of a gas or solid fuel boiler before the start of the heating season. In boilers with a closed firebox, gases are discharged through a coaxial pipe, which does not need to be cleaned. Boilers with an open firebox have a chimney in which natural draft must be present. Regardless of the draft, chimneys must be cleaned at least once a year.
