Spare cartridge - for demineralization filter IVAR.FP DEMI BIG - action IVAR.FP DEMI BIG N

Product detailed description

This replacement cartridge is used in the IVAR.FP DEMI BIG demineralization filter system, which is commonly integrated into central heating systems for water conditioning. The system is typically found in residential and commercial buildings where boiler manufacturers recommend demineralized water for optimal performance and longevity of the heating plant. Installers working on boiler commissioning or maintenance tasks often encounter these filters during system preparation or servicing. The cartridge plays a key role in ensuring the water entering the system is fully demineralized, reducing scaling and corrosion risks.

The filter is typically installed in pre-treatment stages before feedwater enters the boiler. It is connected inline with the water supply line, either directly after the cold water inlet or within a dedicated water treatment skid. The cartridge must be selected based on the specific system requirements and flow rates to ensure continuous and effective operation during filling or draining processes.

Technical parameters

Material	Container made of polypropylene (PP)
Code	A4150090
Brand	IVAR

The cartridge is housed in a polypropylene container, which provides resistance to chemical degradation and ensures long-term durability under normal operating conditions. This material choice supports compatibility with standard water treatment chemicals and prevents contamination from leaching materials. When selecting the cartridge, ensure the housing material aligns with the system’s chemical environment and operating temperatures.

Installation and connection

To install the cartridge, first shut off the water supply and relieve any residual pressure in the system. Remove the old cartridge by unscrewing the housing cover and carefully extracting the spent media. Insert the new cartridge into the housing, ensuring correct alignment and secure closure. Reconnect the water supply and perform a visual check for leaks around the housing seals. Common errors include incorrect sealing, over-tightening the housing, or using a damaged O-ring. Always verify that the flow direction matches the arrow marked on the filter housing to prevent backflow and ineffective filtration.

Compatibility and accessories

The cartridge is specifically designed for the IVAR.FP DEMI BIG filter model. Ensure that the filter housing is clean and undamaged prior to installation. No additional accessories are required unless specified by the system design. Refer to the manufacturer’s documentation for any recommended support components such as bypass valves or isolation fittings.

Technical background for designers

The demineralization process involves ion exchange using a mixed bed resin contained within the cartridge. As water passes through the resin layer, both cations and anions are removed, resulting in deionized water suitable for boiler feed. The PP container offers good resistance to thermal expansion and chemical exposure. System designers should consider the flow rate and pressure drop characteristics of the filter when integrating it into the overall water treatment scheme. The effectiveness of the cartridge depends on regular replacement according to the system's usage and water quality.

Service and operation

Routine inspection includes checking the housing for signs of wear, verifying the integrity of the seals, and confirming that the filter operates without restriction. Once the filter capacity is exhausted, indicated by reduced flow or poor water quality, the cartridge must be replaced immediately. The frequency of replacement depends on the volume of water processed and the initial hardness level of the incoming supply.

Frequently asked questions

Can the cartridge be used with non-IVAR filter housings?
No, the cartridge is specifically designed for the IVAR.FP DEMI BIG filter model and may not fit or function correctly in other housings.

Is the PP container resistant to high temperatures?
Yes, the polypropylene material is suitable for normal operating temperatures encountered in heating system water treatment applications.

How is the filter integrated into a boiler system?
The filter is typically installed upstream of the boiler in a dedicated water treatment unit to ensure the incoming water is fully demineralized before entering the system.

What happens if the flow direction is reversed during installation?
Reversing the flow can lead to inefficient demineralization and potential damage to the filter media due to improper contact with the water stream.