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What are the three Ventilation Code Sources?
1. Mechanical Code Chapter 13462. IRC 20063. Energy Code Chapter 1322
When codes come into conflict, the _____ ______ shall apply.
With Ventilation codes collide, can local official make the determination?
What are the three types of air in houses?
1. Make up2. Ventilation3. Combustion
What are three problems that pressure differences produce?
1. Backdrafting2. Inefficiency3. Moisture Migration to walls and attics
General mechanical rules(from 1346.0102):Existing Installations
Removal, alteration, or abandonment of, nor prevent the continued utilization and maintenance of, a mechanical system lawfully in existence at time of the adoption of this code.