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: Guidelines, Turndowns
![]() Top 10 gas and mechanical turndowns1. No Permit. 2. Bath exhaust. 3. Improper combustion air. 4. Improper venting requirements and sizing. 5. Improper fuel gas piping requirements and sizing. 6. Fire dampers. 7. Proper makeup air on commercial kitchen exhaust hoods. 8. Improper clearances, slope, exhaust location. 9. Combustionable material in return air plenum (commercial). 10. Approved drawings on jobsite. |