HVAC Detail section: Refrigerant Pipe Insulation Assembly 13mm

This mechanical detail drawing illustrates the insulation assembly for refrigerant-exposed piping systems, specifically focusing on suction and liquid lines. The diagram specifies a 13mm thickness closed-cell tube insulation (Atlas-Foster 30-36 or equivalent) as the primary thermal barrier. The installation requires Foster 85-20 adhesive or equivalent for securing the insulation, followed by two coats of vinyl-based vapor barrier (Foster 30-35 or equivalent). For exposed areas, the detail indicates 4 oz Cora cloth reinforcement bonded to the insulation with two protective layers. The section clearly differentiates between suction and liquid pipes, a critical distinction as suction lines typically require more robust insulation to prevent condensation and maintain system efficiency. This detail would be particularly valuable for mechanical contractors implementing refrigeration systems in commercial applications where proper insulation is essential for energy efficiency and preventing moisture-related issues.