Installation of expansion tank

Installation of an expansion tank should be carried out by qualified specialists in accordance with the project and manufacturer's instructions. Below are general recommendations for the installation of closed-type (membrane) expansion tanks.

Installation requirements:

• To perform technical maintenance on the supply pipeline, shut-off valves protected from accidental closure must be installed.
• A drain valve should be installed on the section between the shut-off valve and the connection port of the expansion tank to drain water from the tank and check the initial pressure of the gas space.
• The tank should be connected to the pipeline via a threaded or flanged connection, as the tank may need to be disconnected from the system for repairs during operation.
• A pressure gauge and a safety valve should be installed near the connection point of the expansion tank.
• No filters or check valves should be installed on the branch connecting the expansion tank to the heating system.
• The elements of the tank should not be subjected to static loads from the supply pipelines or other equipment.
• The working environment parameters at the installation site should not exceed the limits set by the manufacturer.
• Before connecting to the heating system, the initial pressure of the gas space in the expansion tank should be created in accordance with the value obtained during calculation. You can find the calculation of all necessary parameters in the section of the website, Expansion tank calculation.

Installation requirements:

• Modifications to the tank's construction are not allowed.
• The installation of an expansion tank with external damage is prohibited.
• The platform provided for the installation of the expansion tank must support the weight of the tank filled with 100% water.
• It is necessary to provide the possibility of draining water from the tank in the room where the expansion tank is installed, if necessary.
• The room where the expansion tank is installed should be heated. Freezing of water is not allowed.
• The weight and dimensions of expansion tanks with a volume of more than 750 liters can complicate the installation process, make sure the tank can pass through doorways, and take into account that its weight will be significant.
• The tank should be protected from moisture and mechanical damage.

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