Fault rules for HVAC

FDD fault rule types, YAML format, and expression cookbook for HVAC and building systems. Rules are 100% Brick-model driven: inputs reference Brick classes only; column mapping comes from the Brick TTL and Brick external timeseries references (timeseries storage), which Open-FDD embraces at the heart of FDD.

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Table of contents

• Overview
• Expression Rule Cookbook
• YAML rules → Pandas (under the hood)