Boiler assembly - MIX 4 - mixed, with bypass valve

This category contains complete boiler assemblies based on the IVAR.KS MIX 4 system. Each set includes a horizontal distribution manifold, supply and return piping, a circulation pump, a 4-way mixing valve with servo drive, discharge valve, thermometers, and insulation. These units are designed for integration into central heating systems where precise temperature control and flow management are required.

The assemblies are suitable for use in residential and commercial heating systems, particularly in applications involving underfloor heating or radiator circuits. The brass construction and PN 10 pressure rating ensure durability and compatibility with standard heating system components. The included thermal insulation helps reduce heat loss and improve system efficiency.

How to choose

• Confirm the connection size (5/4" F × 5/4" M) matches the existing system piping and boiler inlet/outlet dimensions.
• Select the appropriate voltage (230V or 24V) based on the control system and electrical infrastructure available at the installation site.
• Verify compatibility with the circulation pump model (EVOSTA 2 or EVOSTA 3) and its flow capacity to meet the required heating load.
• Ensure the brass materials (CW617N, CB753S) are suitable for the system’s operating conditions and chemical environment.

Frequently asked questions

What is the maximum flow rate of the MIX 4 boiler assembly?
The maximum flow rate is 3000 l/h, with a Kv4 value indicating the valve’s capacity to regulate flow under pressure.

Can the servo drive be upgraded to a 0–10 V model?
Yes, the IVAR.ACTUATORS 24S servo drive with 0–10 V input is available as an optional extra for advanced control applications.