Hydraulic separator - for horizontal distribution manifold DN 25 - 3500l/h - action PAW.HD3500

Product detailed description

Hydraulic separators are essential components in modern heating systems, particularly those using heat pumps or boilers paired with distribution manifolds. They ensure balanced flow between primary and secondary circuits by allowing thermal stratification and reducing mixing effects. This unit is commonly used in residential and commercial buildings with underfloor heating, radiators or fan coil units connected via horizontal distribution manifolds. In such configurations, the separator prevents thermal short-circuiting and improves overall system efficiency.

When installed beneath a PAW.HEAT BLOC V23 horizontal manifold, this separator functions as part of a modular heat distribution unit. It can also be mounted independently on walls in either vertical or horizontal orientation. Its compact design and thermal insulation make it suitable for tight mechanical rooms or utility areas where space is limited. The separator’s brass body ensures durability, while the EPP insulation minimises heat loss and reduces the risk of condensation in colder environments.

Technical parameters

Material	Brass
Operating temperature	+110 °C
Nominal pressure	PN 6
Module includes	telo oddeľovača, tepelnú izoláciu, 2ks zátky a 2ks prevlečných matíc
Code	34421
Brand	IVAR

The operating temperature limit of +110°C allows the device to handle hot water circuits typical in heating applications. The PN 6 pressure rating indicates suitability for low-pressure systems, which is standard for most domestic and small-scale commercial systems. The inclusion of two plugs and two coupling nuts facilitates sealing and connection during commissioning or maintenance. The EPP insulation provides effective thermal protection, reducing energy losses and ensuring compliance with insulation standards for building services.

Installation and connection

To install, position the unit horizontally beneath a compatible PAW.HEAT BLOC V23 manifold or mount it vertically or horizontally on a wall. Ensure all connections are aligned and sealed correctly using the supplied plugs and coupling nuts. Threaded connections require appropriate sealing tape or compound to prevent leaks. Check that the insulation is intact and undamaged after fitting. A common mistake is improper alignment of the plug seals, which can lead to leakage or poor thermal performance. Always verify that the unit is level and securely fixed to avoid stress on the connections during operation.

Compatibility and accessories

This separator is designed for use with the PAW.HEAT BLOC V23 horizontal manifold. For direct connection to this manifold, two additional fittings (code 548600) must be ordered separately. The brass body ensures compatibility with copper and steel pipework typically found in heating systems. When combining with other components such as circulation pumps or expansion vessels, ensure that the system pressure and temperature limits align with the separator’s specifications. No alternative models or variants are available for this product.

Technical background for designers

The operating principle relies on the separation of fluid streams based on density differences caused by temperature gradients. The brass body conducts heat efficiently, aiding in rapid stratification, while the EPP insulation maintains thermal stability. The unit integrates seamlessly into closed-loop heating systems, provided that the primary and secondary circuits are properly sized. Long-term efficiency depends on correct sizing, proper insulation integrity and the absence of air pockets or blockages within the system. Incorrect installation or undersized piping can reduce the separator’s effectiveness over time.

Service and operation

Routine checks should include verifying the integrity of the thermal insulation and ensuring that all threaded connections remain leak-free. No scheduled maintenance is required beyond these visual inspections. During commissioning, confirm that the separator is positioned correctly and that all seals are intact. Avoid subjecting the unit to pressures exceeding PN 6 or temperatures above +110°C, as this can cause deformation or failure of the insulation.

Frequently asked questions

Can this separator be used with a vertical manifold?
No, it is specifically designed for horizontal distribution manifolds. Vertical configurations require a different mounting arrangement or a separate model.

Is thermal insulation included?
Yes, the unit comes with built-in EPP insulation to reduce heat loss and prevent condensation.

What fittings are needed for connection to a PAW.HEAT BLOC V23 manifold?
Two additional fittings (code 548600) are required for direct connection to the manifold.

Can the unit be installed on a wall?
Yes, it can be mounted vertically or horizontally on a wall if not used in conjunction with a manifold.