Insulation

Heat exchanger insulation: EPP covers and protection

Professional thermal insulation (EPP covers) is essential for the maximum efficiency and longevity of a plate heat exchanger. A closed-cell EPP cover not only ensures energy saving in the system but also guarantees safe working conditions in industrial and commercial boiler houses.

Compatibility of Hexonic (Secespol) series

The Hexonic (formerly Secespol) range applies a strict compatibility rule: the insulation code must match the heat exchanger series exactly, and the dimensions are selected according to the number of plates in the unit. The main series:

• LB (Laser Brazed) series: Laser-welded models (e.g. LB31 insulation is strictly for the LB31 heat exchanger, LB60 - for LB60 accordingly).
• LC series: Copper-alloy brazed heat exchangers (e.g. LC110 series covers replicate the geometry of this model exactly).

Technical properties of EPP insulation

• Material density: 30-40 g/L (closed-cell structure).
• Temperature range: Withstands system working temperatures of up to 110°C.
• Installation: A convenient "snap-on" system allows the insulation to be fitted or removed quickly without additional tools.
• Moisture resistance: The EPP structure does not absorb water, so it maintains stable insulating characteristics.

Reducing heat losses and workplace safety

• Energy efficiency: In smaller systems heat losses are reduced by 5-10%, while in large systems with a high temperature difference (Δt) an efficiency gain of as much as 15-20% is achieved.
• Workplace safety: According to DIN/ISO standards, surfaces with a temperature above 60°C pose a direct risk of burns. The insulation reliably protects workers from physical contact with hot metal.

Important to know: installation specifications

• Lack of UV resistance: Standard EPP material is not resistant to direct sunlight. When installing equipment outdoors, an additional protective sheet-metal cover must be used.
• Condensation risk: In dual-mode (heating and cooling) systems, condensate can accumulate under the insulation. In such cases the cover must have micro-ventilation or a drainage solution for removing moisture.

Frequently asked questions (FAQ)

How do I select the right insulation by code?
A strict rule applies: the insulation code must match the heat exchanger series (e.g. only an LB31 cover suits an LB31 model). You also need to know the number of plates, as the depth of the cover and the fixing elements depend on it.

Is EPP insulation suitable for outdoor installation?
No, a standard EPP cover is not suitable for open outdoor installation because it is not resistant to UV radiation. In outdoor conditions the insulation must be protected with an additional sheet-metal cover.

Need help putting together a heat substation, or looking for specific cover dimensions for your industrial project? Contact the Amegata.lt specialists - we will advise and help you find the optimal solution.