An indirect substation is used when district heating network conditions, such as pressure and temperature, do not allow direct connection. When a substation is connected indirectly, a heat exchanger provides energy-efficient heat transfer. It also ensures that the primary network supply side and the secondary building installation side remain safely separated. 

In this way, the building application works regardless of pressure or temperature variations in the district heating network (hydronic balancing) and is safe from pipe breaks or leaks.

Danfoss indirect substations are self-contained units that are generally wall-mounted. They can support single or multiple heating circuits, with or without domestic hot water production on the primary or secondary side.

These advanced solutions are also available with an electronic controller for weather compensation. This ensures easy and energy-efficient operation while simultaneously allowing central monitoring and energy consumption transparency.

Features and benefits

Advanced solutions available also with an electronic controller for weather compensation

Indirect substations with Micro Plate™ heat exchangers provide energy efficient heat transfer

Smaller, lighter, more efficient: Danfoss' compact substation DSA1 Mini

Learn how the station is installed, as well as tips and tricks for commissioning and maintenance.


Type Name Language Updated Download File type
Operating guide - AQ District heating substations English 22 Mar, 2018 4.0 MB .pdf
Brochure - AD Specifying the right district heating substation makes commercial sense English 22 May, 2018 2.4 MB .pdf

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