Tank:

• Material: Steel plate quality USD37.2
• Welds: Robotically welded in a neutral gas environment
• Cleaning: Blasting at 6 points
• Internal coating: Glass enamel fired at 860° C in BL models
• Maximum operating pressure: 6 bar
• Maximum test pressure: 15 bar for 5 minutes
• Maximum operating temperature: 95° C

Enclosure:

• Material: PVC leatherette in various colors

Exchanger:

• Type: Permanent serpentine from steel pipe with a cross-section of 33mm (tube)

Insulation:

• Material: Polyurethane without CFC & FCKW
• Density: 40 kg/m3
• Thickness: 50-65 mm

In the BL800 – BL1000 boiler models, the insulation is made from flexible polyurethane 75mm, which is also removable for easier access through narrow passages.