How to install a hot water meter for a standard apartment from A – Z

The installation of the hot water meter in accordance with the technical requirements plays an extremely important role in the operation and use, this helps the system to operate smoothly, stably and accurately with the parameters. displayed on the watch face. Hot water meter, hot water flow meter is essentially a type of flow meter commonly used for many different industrial systems with the purpose of helping operators check the volume of water used. within a certain time, adjust the system to operate most efficiently.

Through this, P69 Join Stock Company will share some experiences on how to install hot water meters that we have drawn from long-term working experiences along with techniques and installation tips to shorten the working time. still ensure the highest efficiency, let’s find out together below!

About the hot water meter

Hot water meters are often used in factories with boiler and boiler systems. Or in families and apartments that use solar water systems. With a hot water meter, the temperature can withstand temperatures in the range of 30 – 130 degrees Celsius.

Hot water flow meter has recently been interested in many customers, households, hotels or companies, due to the strong development of the water system in apartments, houses, hotels or business units. Most are replaced to use hot water, especially hot water systems using solar energy.

With the characteristics of having to operate and work in high-temperature conditions, the components can withstand high temperatures, helping the watch to work well.

And the cost of hot water flow meters will often be higher than other water flow meter models of the same type.

The easiest way to identify this water meter model is that it is often painted red on the outside of the cast iron or bronze case of the watch, to avoid confusion with other water meter models.

Besides, choosing a good hot water meter not only brings durability to the product, high accuracy in measuring the amount of water used, but also safety for users.

Đôi nét về đồng hồ đo nước nóng
About the hot water meter

Application of hot water meter installation

Hot water flow meter belongs to the group of water meters distributed by Ecozen. Hot water meters are often used in factories that use boiler and boiler systems; or apartments using hot water systems by solar energy…. Hot water flow meter is specialized for measuring at 30°C ~ 130°C.

In addition, hot water flow meters are used in hot water piping systems in hotels, condominiums or in solar hot water systems.

Notes before installing a hot water meter

First, you need to ensure the following before installing the water meter:

  • The water meter must be suitable for the size of the pipe and the water system used.
  • Use a good quality, tested water meter. Carefully check the water meter for any problems. For mechanical water meters, we can check manually by blowing into one end of the pipe to see if the propeller rotates or not.
  • Make sure the installation location is a dry place, avoid high temperatures, there is little temperature change from the environment.
  • The location to install the water meter must be at least 2m from the source. If the upstream pressure is too great, it is necessary to extend the safety distance. This helps to ensure the water meter
  • Stable operation, no vibration or incorrect gearshift. The installation location must be convenient for checking and monitoring indicators. In addition, it also helps with the replacement and maintenance

Steps to install a standard hot water meter

Hopefully, through this article, you can better understand how to install a water meter and the necessary notes when installing a water meter. The steps to install a hot water meter include:

1. Step 1: Clean the pipe

Clean the contact surface of the pipe with the water meter. Clean pipes and joints to remove foreign objects in pipes. You should clean carefully because this will affect the water supply process through the meter. Make sure the water source does not contain solids such as sand, mud, and cement. For water systems containing solid impurities, it is recommended that a filter be installed on the front of the meter.

2. Step 2: Determine how to install and mount the water meter

Xác định cách lắp, gắn đồng hồ nước
Determine how to install and mount the water meter
  • Water meter installation requirements: Water meters installed vertically or tilted are not in accordance with the technical process. The water meter must be installed horizontally. In front of the water meter, the water inlet must be 10D from the pipe diameter, and behind the water meter, the water outlet should be 5D from the pipe diameter.
  • Water meter mounting position: Horizontally mounted. The dial of the watch should face up for easy viewing. Do not install the water meter in a location with strong electromagnetic and electric fields.
  • The front and rear pipes of the clock must be straight in the direction of the clock.
  • Install in the direction of flow

On the body of the water meter, there is always an arrow noting the direction of the fluid flow. The flow direction must match the direction of the arrow on the body of the water meter. If the water meter is installed against the flow in the pipeline, the meter will not work.

In the direction of water flow, the order of priority is as follows: Gate valve – water meter – one-way valve.

Install in the direction of the arrow, 90 degrees perpendicular to the ground, the center of the axis of the water meter is pointing straight up. The joints must be tight, and ensure no water leakage.

3. Step 3: Install hot water meter

For mechanical water meters, there are two common types: threaded water meters and flanged water meters.

3.1. Install threaded hot water meter

Normally, threaded hot water meter is water meter with size smaller than DN50. Shrink connection type. This type is commonly used in small and residential projects.

Step 1: After cleaning the pipe, wrap the young tape around the thread of the meter. Wrap firmly to ensure no leaks.

Step 2: Put the meter on the pipe. The installation direction is in the direction of the embossed arrow on the body. Do not install it in reverse as this will cause the water meter to not work.

Step 3: Install the rubber gasket between the contact surface of the pipe and the meter. Use a wrench or wrench to tighten the connection between the water meter and the water pipe.

Step 4: After the installation is complete, test to see if the meter works, has a leak or not. If leaks are found, recheck the connections. If it does not work, check the direction of the water meter. If the clock runs, works, you can put it to use.

3.2. Install flange hot water meter

Flange hot water meters are usually sized from DN50 and up. This type of clock is often used for large projects. With this water meter, we must have an additional set of 2 flanges with the same size of the pipe. For example, phi 80 pipe, phi 80 meter, phi 80 flange and phi 80 rubber gasket. Then proceed to install the pipe so that the water enters the meter in the direction of the arrow.

Step 1: Bring up the pipe flange and connect to the meter. From there, it helps to fix the flange connection holes with the meter.

Step 2: Perform spot welding to fix the flange. However, it should not be sealed. When sealing while the water meter is being installed, it will result in failure of the meter due to the heat-generating solder joint.

Step 3: Put the meter down and start to do the tight, tight welding. Make sure the connection is not open or leaking when in use. After the welds have cooled down, clean the welds and surrounding dirt. Thread the bolts and nuts to tighten the watch. Do not forget the sealing gasket between the flange and the meter.

Step 4: Use wrenches, wrenches to tighten the joints. Pay attention to tighten the screws symmetrically and evenly. Avoid connection buckling that will leak. At the weld position, it is recommended to apply a layer of anti-rust paint to prevent the welds from rusting, leading to damage over time. After installation is complete, test the operation of the water meter before putting it into use.

Các bước lắp đặt đồng hồ đo nước nóng đúng tiêu chuẩn
Steps to install a standard hot water meter

Working principle of hot water meter

The hot water meter is operated by a fairly simple mechanism: When the fluid flows through the meter, it will exert a force on the propeller and cause it to rotate. From there act on the gear system and transmit the signal to the counter and display the data on the watch dial.

Contact us today for a free consultation and answer at:

Contact information P69 – M&E Contractor

Address: No. 6/165C Xuan Thuy, Cau Giay District, Hanoi


Hotline: 02437688156 – 0965937799




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