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// CODE SNIPPET

C403.4.2.2 Two-Pipe Changeover System

Energy Conservation Code 2015 of Colorado > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.4 Hydronic and Multiple-Zone HVAC Systems Controls and Equipment. (Prescriptive) > C403.4.2 Hydronic Systems Controls > C403.4.2.2 Two-Pipe Changeover System
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Systems that use a common distribution system to supply both heated and chilled water shall be designed to allow a dead band between changeover from one mode to the other of not less than 15°F (8.3°C) outside air temperatures; be designed to and provided with controls that will allow operation in one mode for not less than 4 hours before changing over to the other mode; and be provided with controls that allow heating and cooling supply temperatures at the changeover point to be not more than 30°F (16.7°C) apart.

Related Code Sections


C403.4.3.2 [CE] Commercial Energy Efficiency, Two-Pipe Changeover System
Systems that use a common distribution system to supply both heated and chilled water shall be designed to allow a deadband between changeover from ...
Energy Conservation Code 2018 of Colorado > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.4 Heating and Cooling System Controls (Mandatory) > C403.4.3 Hydronic Systems Controls > C403.4.3.2 Two-Pipe Changeover System
C403.4.2.2 [CE] Commercial Energy Efficiency, Two-Pipe Changeover System
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Energy Conservation Code 2015 of Colorado > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.4 Hydronic and Multiple-Zone HVAC Systems Controls and Equipment. (Prescriptive) > C403.4.2 Hydronic Systems Controls > C403.4.2.2 Two-Pipe Changeover System
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