Neutralising filter - for condensing boilers up to 378kW - 3/4 "F GEL.NEUTRALIZER F

Product detailed description

Condensing boilers and cascades generate acidic condensate that requires neutralisation to prevent corrosion in drainage systems. This is particularly relevant in commercial and industrial buildings with high thermal loads, where multiple boilers operate continuously. Installers working with such systems must ensure that condensate is treated before discharge into the public sewer network. The IVAR neutralising filter is a compact solution for installations where space is limited but the condensate volume remains significant. The unit is suitable for integration into both new and retrofit heating systems, provided the condensate flow rate does not exceed the rated capacity.

Technical parameters

Material	PP container
Dimensions	Ø 180 mm; height 400 mm
Filling volume	5 l
Code	101.092.82
Brand	IVAR

The filter’s 5L media volume ensures sufficient contact time for effective pH adjustment. The 3/4 inch female connection allows direct integration into the condensate discharge line. The PP container is chemically resistant and suitable for long-term exposure to acidic condensate. These parameters are essential for selecting the correct unit based on boiler output and condensate generation rates.

Installation and connection

The filter must be installed in the condensate line between the boiler and the drain. A 3/4 inch female thread is provided for connecting to the boiler’s condensate outlet. The unit requires a direct connection to the drainage system to allow treated condensate to flow away. Installers should verify that the condensate line is correctly sized and that the filter is positioned to allow full media saturation. Common mistakes include undersized piping, which can restrict flow, or incorrect orientation, which may reduce media efficiency. A secure, leak-free connection is essential to prevent bypassing of untreated condensate.

Compatibility and accessories

This model is compatible with all IVAR condensing boiler systems rated up to 378kW. No additional accessories are required for basic operation, but a condensate pump may be necessary if the discharge point is higher than the filter. No related products are available for this model.

Technical background for designers

The unit operates by passing condensate through a bed of specially annealed dolomite, which neutralises the acidity. The PP container is inert and does not react with the media or condensate. The media’s high surface area ensures rapid pH adjustment. The system’s efficiency depends on the condensate’s initial pH and flow rate. A higher acidity or larger volume will reduce the media’s service life. Designers should account for these variables when selecting the unit and planning the condensate line layout.

Service and operation

The filter requires periodic refilling with new media when the neutralising capacity is exhausted. The refill interval depends on the condensate’s acidity and volume. No routine maintenance is required apart from checking the media level and ensuring the unit is correctly connected to the drainage system. A drop in pH of the discharge condensate indicates the need for media replacement.

Frequently asked questions

Can the filter be used with multiple boilers in a cascade?
Yes, the unit is suitable for boiler cascades with a combined output up to 378kW. The total condensate volume must not exceed the unit’s capacity.

Is a condensate pump required for installation?
A pump is not required if the discharge point is at or below the filter’s outlet. A pump may be needed for uphill discharge.

Can the filter be installed vertically or horizontally?
The unit can be installed in either orientation, provided the condensate flow is unobstructed and the media remains fully saturated.

How is the media level checked during operation?
The media level can be visually inspected through the container. A significant drop indicates the need for replacement.

Documents for download

• CSTL_GEL.NEUTRALIZATOR F (PDF)
• SKTL_GEL.NEUTRALIZATOR F sk (PDF)