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// CODE SNIPPET

607.2.1.2 Demand Recirculation Controls for Distribution Systems

2015 Virginia Plumbing Code > 6 Water Supply and Distribution > 607 Hot Water Supply System > 607.2 Hot or Tempered Water Supply to Fixtures > 607.2.1 Circulation Systems and Heat Trace Systems for Maintaining Heated Water Temperature in Distribution Systems > 607.2.1.2 Demand Recirculation Controls for Distribution Systems
JUMP TO FULL CODE CHAPTER
A water distribution system having one or more recirculation pumps that pump water from a heated water supply pipe back to the heated water source through a cold water supply pipe shall be a demand recirculation water system. Pumps shall have controls that comply with both of the following:
  1. The control shall start the pump upon receiving a signal from the action of a user of a fixture or appliance, sensing the presence of a user of a fixture, or sensing the flow of hot or tempered water to a fixture fitting or appliance.
  2. The control shall limit the temperature of the water entering the cold water piping to 104°F (40°C).

Related Code Sections


607.2.1.2 Water Supply and Distribution, Demand Recirculation Controls for Distribution Systems
through a cold water supply pipe shall be a demand recirculation water system. Pumps shall have controls that comply with both of the following: The ...
2015 Virginia Plumbing Code > 6 Water Supply and Distribution > 607 Hot Water Supply System > 607.2 Hot or Tempered Water Supply to Fixtures > 607.2.1 Circulation Systems and Heat Trace Systems for Maintaining Heated Water Temperature in Distribution Systems > 607.2.1.2 Demand Recirculation Controls for Distribution Systems
C404.7 [CE] Commercial Energy Efficiency, Demand Recirculation Controls
through a cold-water supply pipe shall be a demand recirculation water system . Pumps shall have controls that comply with both of the following: The ...
2015 Virginia Energy Conservation Code > 4 [CE] Commercial Energy Efficiency > C404 Service Water Heating (Mandatory) > C404.7 Demand Recirculation Controls
R403.5.2 [RE] Residential Energy Efficiency, Demand Recirculation Systems
through a cold water supply pipe shall be a demand recirculation water system . Pumps shall have controls that comply with both of the following: The ...
2015 Virginia Energy Conservation Code > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.5 Service Hot Water Systems > R403.5.2 Demand Recirculation Systems
N1103.5 [RE] Energy Efficiency, (R403.5) Service Hot Water Systems
water supply pipe shall be a demand recirculation water system . Pumps shall have controls that comply with both of the following: The control shall ...
2015 Virginia Residential Code > 11 [RE] Energy Efficiency > N1103 (R403) Systems > N1103.5 (R403.5) Service Hot Water Systems
P2905.2 Water Supply and Distribution, Demand Recirculation Systems
Demand recirculation water systems shall be in accordance with Section N1103.5.2 ...
2015 Virginia Residential Code > 29 Water Supply and Distribution > P2905 Heated Water Distribution Systems > P2905.2 Demand Recirculation Systems
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