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// CODE SNIPPET

6.5.1.2.2 Maximum Pressure Drop

Alabama Commercial Energy Code > 6 Heating, Ventilating, and Air Conditioning > 6.5 Prescriptive Path > 6.5.1 Economizers > 6.5.1.2 Water Economizers > 6.5.1.2.2 Maximum Pressure Drop
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Precooling coils and water-to-water heat exchangers used as part of a water economizer system shall either have a water-side pressure drop of less than 15 ft of water, or a secondary loop shall be created so that the coil or heat exchanger pressure drop is not seen by the circulating pumps when the system is in the normal cooling (noneconomizer) mode.

Related Code Sections


C403.3.4.2 [CE] Commercial Energy Efficiency, Maximum Pressure Drop
Precooling coils and water-to-water heat exchangers used as part of a water economizer system shall either have a water-side pressure drop of less ...
Alabama Energy Code > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.3 Economizers (Prescriptive) > C403.3.4 Water-Side Economizers > C403.3.4.2 Maximum Pressure Drop
402.5 Gas Piping Installations, Allowable Pressure Drop
The design pressure loss in any piping system under maximum probable flow conditions, from the point of delivery to the inlet connection ...
Fuel Gas Code 2009 of Alabama > 4 Gas Piping Installations > 402 (IFGS) Pipe Sizing > 402.5 Allowable Pressure Drop
402.5 Gas Piping Installations, Allowable Pressure Drop
The design pressure loss in any piping system under maximum probable flow conditions, from the point of delivery to the inlet connection ...
Fuel Gas Code 2015 of Alabama > 4 Gas Piping Installations > 402 (IFGS) Pipe Sizing > 402.5 Allowable Pressure Drop
9.2.3.5* Hanging, Bracing, and Restraint of System Piping, Unsupported Armover Length
Where the maximum static or flowing pressure, whichever is greater ...
Standard for the Installation of Sprinkler Systems 2013 of Alabama > 9 Hanging, Bracing, and Restraint of System Piping > 9.2* Installation of Pipe Hangers > 9.2.3 Location of Hangers on Branch Lines > 9.2.3.5* Unsupported Armover Length
17.4.3.5* Installation Requirements for Hanging and Support of System Piping, Unsupported Armover Length
Where the maximum static or flowing pressure, whichever is greater ...
Standard for the Installation of Sprinkler Systems 2019 of Alabama > 17 Installation Requirements for Hanging and Support of System Piping > 17.4* Installation of Pipe Hangers > 17.4.3 Location of Hangers on Branch Lines > 17.4.3.5* Unsupported Armover Length
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