Hydraulic interfacing modules are integration systems useful for optimizing the use of devices powered by renewable energy, such as pellet stoves, fireplaces, or thermo stoves, to allow them to contribute to the production of hot water for domestic heating or for utilities, letting the traditional boiler work only when is necessary, improving efficiency and economic savings.

In the presence of heat produced by the biomass source, in fact, the module disables the traditional boiler and sends hot water to the domestic heating or domestic hot water system (depending on the model). If, on the other hand, the heat produced by the biomass is not enough, it allows the gas boiler to respond to both the request for heating and domestic hot water, as in traditional systems.

When can a hydraulic interface module be installed?

The hydraulic modules are suitable for the separation of two hydraulic circuits (open or closed vessel), each powered by an energy source with a thermal power lower than 35 KW and the use of water at a temperature below 110°C as heat transfer fluid (Standard UNI10412-2).

As we have indicated, the most typical application is that of combining a thermo fireplace or a thermo stove and a traditional gas/oil boiler for home heating management.

In addition to bringing the system up to standard, the function of the modules, depending on the application, is to manage the production of hot water for heating and/or sanitary use.

How do a hydraulic module work?

All the hydraulic modules, through the integrated plate heat exchanger, act on two circuits:

  • Primary circuit: closed circuit for drawing heat (fireplace source or pellet stove)
  • Secondary circuit: closed heating circuit

The primary circuit acts as a “supply” on the secondary circuit: when a certain inlet water temperature is reached (thermo fireplace delivery), the electronic control unit activates the circulation pump of the primary circuit thus creating the supply for the exchanger. At a second temperature threshold, higher than the first, the secondary or heating circuit pump is also activated, thus creating a continuous heat exchange as long as the heat source remains active. Through an auxiliary contact, connected in series to the room thermostat, the electronic control unit is also able to exclude and reactivate the boiler, if necessary!

In models where the management of hot water for sanitary use is also provided, when the user requests hot water, the flow switch inside the module detects the passage of water inside the circuit. Going to close the electrical contact activates a diverter valve which diverts the flow of hot water of the primary circuit inside the exchanger dedicated to sanitary, thus excluding (until the use of the user) the secondary circuit.

It is easy to understand how the principles described above, in addition to bringing the system up to standard, allow the end user to independently manage multiple heat sources, thus improving energy efficiency and saving!

IMIT hydraulic interface modules

IMIT has a wide range of interface modules, suitable for multiple needs:

Your trusted technician will know which module will best respond to your renewable energy device and your system. But for any doubts or needs, do not hesitate to contact us!

All IMIT hydraulic modules are designed and built internally in our company in Italy, using reliable and high quality components. Each module is functionally and hydraulically tested to avoid leaks during commissioning, tested for earthing through EMC tests and the whole range is ENEC03 certified by IMQ, using the same parameters for the tests for gas boilers.

IMIT promotes new technologies of climate comfort, through a series of products dedicated to renewable energies, to guarantee users energy and economic savings and to safeguard our planet.

To find out more, browse our site, download our catalog or preview the instruction manuals for our products for home and office comfort. For further requests, send an email to info@imit.it. Our staff will reply as soon as possible.