Boiler assembly - non-mixed - DN 32; DAB.EVOSTA 3 60/180 IVAR.KS 550

Product detailed description

Non-mixed boiler assemblies are essential components in central heating systems, particularly in residential and commercial buildings where consistent water temperature is required. This model is typically installed in boiler rooms or mechanical spaces, integrated into hydronic heating systems that rely on direct water flow without mixing. Installers working on such systems must ensure correct sizing, alignment with system pressure and temperature requirements, and secure mechanical and electrical connections to ensure long-term reliability.

These assemblies are commonly used in systems where return water is directly reheated without blending with cold water, making them suitable for applications such as floor heating, radiators, or underfloor heating circuits. The installation involves connecting the assembly to the boiler and distribution system, ensuring that all components are correctly aligned and sealed to prevent leaks and maintain system efficiency.

Technical parameters

Material	Brass CW617N
Operating temperature	+120 °C
Maximum flow rate	3000 l/h
Nominal pressure	PN 10
Code	5506105
Brand	IVAR

The boiler assembly operates at a maximum temperature of +120°C, which is suitable for high-temperature heating systems. The maximum flow rate of 3000 l/h determines the system's capacity to deliver heated water efficiently. The PN 10 rating indicates the nominal pressure the system is designed to handle, which is essential for compatibility with standard heating system components. These parameters are critical for ensuring the assembly is correctly sized for the intended application and system load.Installation and connection The assembly features internal and external 5/4" F × 5/4" M thread connections, which must be aligned with the corresponding fittings on the boiler and distribution system. Installers should verify that all connections are clean and free of debris before tightening to prevent leaks. The assembly includes a circulation pump, pressure relief valves, and thermal insulation, which must be correctly positioned to ensure safe and efficient operation. Common installation errors include incorrect thread alignment, insufficient sealing, and improper pump orientation, which can lead to system inefficiency or component failure.Compatibility and accessories This boiler assembly is compatible with standard heating systems that use copper or steel piping and operate within the specified temperature and pressure ranges. Additional components such as expansion vessels, pressure gauges, or balancing valves may be required depending on the system configuration. Installers should ensure that all system components are compatible with the assembly's materials and specifications to avoid corrosion or mechanical failure.Technical background for designers The boiler assembly operates by allowing heated water to flow directly from the boiler to the distribution system without mixing with cold water. The brass construction (CW617N and CB753S) provides good corrosion resistance and mechanical strength, making it suitable for long-term use in heating systems. The thermal insulation (PS material) helps reduce heat loss and improves system efficiency. The design ensures that the assembly can be integrated into a variety of heating systems, provided that the system's pressure and temperature conditions are within the specified limits. The service life and efficiency of the assembly depend on correct installation, regular maintenance, and the quality of the system's overall design.Service and operation Regular inspection of the assembly's components is recommended to ensure continued performance. Installers should check for signs of corrosion, leaks, or mechanical wear, particularly on the pump, valves, and connections. The thermal insulation should also be inspected for damage or degradation. No specific service intervals are provided in the technical data, but routine checks are advised to maintain system efficiency and safety.Frequently asked questions

Can this boiler assembly be used with a condensing boiler?
Yes, provided that the boiler operates within the specified temperature and pressure limits and that the system is designed for direct water flow without mixing.

Is the circulation pump included in the assembly?
Yes, the assembly includes an integrated circulation pump as part of the standard configuration.

Can the assembly be installed vertically?
While the assembly is typically installed horizontally, vertical installation is possible if the manufacturer's guidelines for pump orientation and flow direction are followed.

Are pressure relief valves included in the assembly?
Yes, the assembly includes two pressure relief valves as part of the standard configuration to ensure safe operation under normal and overload conditions.