Return protection groups are ready-made pump and valve assemblies used in systems with solid fuel boilers, wood gasification boilers, and pellet boilers. Their purpose is to maintain a sufficiently high temperature of the water returning to the boiler, protecting the heat exchanger from water vapor condensation from the flue gases and low-temperature corrosion. Each return protection group we offer combines a circulation pump and a thermostatic valve with a specified opening temperature in a single insulated housing, so installation is limited to connecting the assembly to the system, without having to put it together from individual components. The compact design also makes subsequent servicing easier, as all control components remain accessible in one place.
Why is it worth using a return protection group?
A return temperature that is too low is one of the most common causes of premature boiler wear. Tar deposits that build up on the cool walls of the heat exchanger combine with ash and reduce the efficiency of heat transfer, and in extreme cases lead to perforation of the water jacket. The thermostatic valve built into the assembly mixes hot supply water with cooler return water until the system reaches the set temperature, shortening the time needed for the boiler to reach its operating temperature after firing up and stabilizing its operation under low load. Manufacturers of gasification boilers very often make the validity of the warranty conditional on using such a system, so it is worth checking the required opening temperature in your boiler’s documentation. Our range also includes energy-efficient circulation pumps for central heating systems, which make it possible to adapt the operating parameters of the heating circuit to a specific type of installation.
We encourage you to contact us - we will be happy to help you choose a return protection group suited to the boiler output and required return temperature, so that the system operates reliably throughout the heating season.
