Antifreeze is a critical component in heating and solar systems, particularly in regions where temperatures drop below freezing. It is used in residential, commercial and industrial buildings to protect pipework, heat exchangers and solar collectors from ice formation. Installers and service technicians must ensure the correct type and concentration of antifreeze is used to maintain system integrity and efficiency. In solar thermal systems, antifreeze prevents damage to panels and circulation loops during cold weather. In central heating systems, it ensures safe operation during periods of low or no heat demand.

When working with antifreeze, installers must consider the system's operating temperature range, the type of heat transfer fluid and the compatibility with system materials. Antifreeze is typically added during initial commissioning or during maintenance when the system is drained or requires topping up. It is essential to follow the manufacturer's instructions for mixing ratios and application to avoid under- or over-concentration, which can affect performance or cause corrosion.

Technical parameters

Code	IVA.060.TH
Brand	IVAR

The antifreeze is formulated to provide freeze protection down to -32°C, making it suitable for systems in cold climates. It is based on propylenglycol, a non-toxic and biodegradable fluid that is safe for use in systems where accidental leakage could occur. The absence of inhibitors means it is intended for use in systems where additional corrosion protection is provided by other means, such as pre-treated components or separate corrosion inhibitors. The 60L is suitable for medium to large systems, and the mixing ratio should be followed according to the product label.

Installation and connection

Antifreeze is typically added to the system during commissioning or during maintenance when the system is drained. The system must be clean and free of air before the antifreeze is introduced. The container is opened and the antifreeze is poured into the system using a pump or gravity feed. It is important to ensure the correct mixing ratio is followed to achieve the required freeze protection. Common installation mistakes include incorrect mixing, failure to purge air from the system or using the wrong type of antifreeze for the system material. After installation, the system should be checked for leaks and the temperature range verified.

Compatibility and accessories

IVAR THERMOL antifreeze is compatible with most heating and solar systems that use propylenglycol-based fluids. It should be used in systems where additional corrosion protection is provided by other means, such as pre-treated components or separate corrosion inhibitors. No specific accessories are required for installation, but a pump or gravity feed system may be needed for large systems. Installers should ensure the system is compatible with propylenglycol before use.

Technical background for designers

Antifreeze works by lowering the freezing point of the heat transfer fluid, preventing ice formation in the system. IVAR THERMOL is based on propylenglycol, a non-toxic and biodegradable fluid that is less corrosive than ethylenglycol. It is suitable for use in systems with copper, steel, aluminium and plastic components. The absence of inhibitors means that the system must be designed with materials that are resistant to corrosion or have additional corrosion protection. The service life of the antifreeze depends on the system's operating conditions, the presence of contaminants and the maintenance regime. Regular checks for concentration and contamination are recommended to ensure long-term performance.

Service and operation

During operation, the antifreeze should be checked for concentration and contamination. The system should be purged of air and checked for leaks. No specific service intervals are provided in the brief, but regular checks are recommended to ensure the system remains protected. If the antifreeze becomes contaminated or the concentration drops below the required level, it should be replaced or topped up according to the manufacturer's instructions.

Frequently asked questions

Can IVAR THERMOL be used in solar thermal systems?
Yes, IVAR THERMOL is suitable for use in solar thermal systems where freeze protection is required down to -32°C. It is a non-toxic solution based on propylenglycol.

Is IVAR THERMOL compatible with copper components?
Yes, IVAR THERMOL is compatible with copper components. It is based on propylenglycol, which is less corrosive than ethylenglycol.

Can IVAR THERMOL be mixed with other antifreeze types?
No, IVAR THERMOL should not be mixed with other antifreeze types. Mixing different types can affect performance and may lead to incompatibility issues.

What should be done if the antifreeze concentration drops below the required level?
If the antifreeze concentration drops below the required level, it should be replaced or topped up according to the manufacturer's instructions. Regular checks are recommended to ensure the system remains protected.