The answer
Why does handover affect performance?
A finished installation is not fully handed over until the owner can operate it, recognise faults and find the design, commissioning and warranty records. The pack should match what was installed, not be a generic stack of manuals.
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What belongs in the pack?
Keep as-built drawings, equipment models and serial numbers, electrical and commissioning certificates, settings, warranties, service schedule and relevant network or planning documents. Make sure you have owner access to every monitoring app. Record any changes from the original design and who agreed them.
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Make the handover practical
Ask the installer to demonstrate normal controls, hot-water schedules, alarms and what to do if the system stops. For a business or community building, name the staff or volunteers who will receive the training. Agree how early performance questions will be handled so an inefficient setting is corrected before it becomes normal practice.
Where this guidance comes from
Check the original guidance.
These primary sources support the technical or scheme points above. Rules can change; follow the current source before making a commitment.
Apply this to your property
Know what your finished system should deliver.
If planning a new project, FLO can include handover responsibilities in the scope from the outset.