TL;DR
Manufacturer instructions are the installation and operation documents shipped with a listed product, and under IRC R102.7.2 and similar code sections they carry the force of code: equipment must be installed as those documents direct. When instructions are stricter than the code, the stricter rule governs, which is why inspectors ask for them on site for unfamiliar products.
What it means
Manufacturer instructions are the installation and operation documents shipped with a listed product, and under IRC R102.7.2 and similar code sections they carry the force of code: equipment must be installed as those documents direct. When instructions are stricter than the code, the stricter rule governs, which is why inspectors ask for them on site for unfamiliar products. Deviating from them also voids most product warranties, making them a quiet but decisive document in disputes.
Where it sits in the glossary
Manufacturer instructions is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
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