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8.68.3.3.6 Building integration
Heat pump system installation shall be securely fixed and not adversely affect the weather resistance of the building.
Foundations and anchor points for stand-alone LZC technologies should be designed by an engineer in accordance with Technical Requirement R5 to withstand the structural forces acting upon them.
The structure to which the LZC technology is attached should be assessed according to its ability to accept the loadings and prevent detrimental effects arising from movement or vibration.
The design of the structure should take account of:
- the self-weight of the LZC components
- imposed loads
- wind loads
- dynamic loading (where relevant).
Notching, drilling or chasing of structural components to accommodate service pipes or cables should either comply with Part 8.7.1 or be designed by an engineer in accordance with Technical Requirement R5.
Fixings, supports, bracketry and mounting frames should:
- accommodate all static and dynamic loads in accordance with the manufacturer’s recommendations
- have adequate protection against corrosion (grade 316 stainless steel is recommended for coastal locations)
- be compatible or isolated where two metals are to be joined to prevent bimetallic corrosion.
Aluminium and aluminium alloys should not come into contact with cementitious material.
All interfaces between the LZC technology and the building should ensure adequate weather resistance, sealed to limit air leakage and prevent moisture from reaching the interior or any part of the structure that could be adversely affected by its presence. The envelope should be weatherproofed using appropriate flashings and fixings. Weatherproofing details that rely solely on sealant are not acceptable.
Last updated: 2nd January 2024