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// CODE SNIPPET

607.2.1 Circulation Systems and Heat Trace Systems for Maintaining Heated Water Temperature in Distribution Systems

2017 FBC - Plumbing, 6th edition > 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
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For Group R2, R3 and R4 occupancies that are three stories or less in height above grade plane, the installation of heated water circulation and temperature maintenance systems shall be in accordance with Section R403.5.1 of the Florida Building Code, Energy Conservation. For other than Group R2, R3 and R4 occupancies that are three stories or less in height above grade plane, the installation of heated water circulation and heat trace systems shall be in accordance with Section C404.6 of the Florida Building Code, Energy Conservation.

607.2.1.1 Pump Controls for Hot Water Storage Systems

The controls on pumps that circulate water between a water heater and a storage tank for heated water shall limit operation of the pump from heating cycle startup to not greater than 5 minutes after the end of the cycle.

607.2.1.2 Demand Recirculation Controls for Distribution Systems

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 Water Supply and Distribution, Circulation Systems and Heat Trace Systems for Maintaining Heated Water Temperature in Distribution Systems
, R3 and R4 occupancies that are three stories or less in height above grade plane, the installation of heated water circulation and heat trace systems ...
2017 FBC - Plumbing, 6th edition > 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 Water Supply and Distribution, Circulation Systems and Heat Trace Systems for Maintaining Heated Water Temperature in Distribution Systems
, R3 and R4 occupancies that are three stories or less in height above grade plane, the installation of heated water circulation and heat trace systems ...
2020 FBC - Plumbing, 7th edition > 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
R403.5 [RE] Residential Energy Efficiency, Service Hot Water Systems
automatically adjust the energy input to the heat tracing to maintain the desired water temperature in the piping in accordance with the times when heated ...
2017 FBC - Energy Conservation, 6th edition > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.5 Service Hot Water Systems
R403.5 [RE] Residential Energy Efficiency, Service Hot Water Systems
for such systems shall automatically adjust the energy input to the heat tracing to maintain the desired water temperature in the piping in accordance ...
2020 FBC - Energy Conservation, 7th edition > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.5 Service Hot Water Systems
C404.6.2 [CE] Commercial Energy Efficiency, Heat Trace Systems
to the heat tracing to maintain the desired water temperature in the piping in accordance with the times when heated water is used in the occupancy. Heat trace ...
2017 FBC - Energy Conservation, 6th edition > 4 [CE] Commercial Energy Efficiency > C404 Service Water Heating (Mandatory) > C404.6 Heated-Water Circulating and Temperature Maintenance Systems > C404.6.2 Heat Trace Systems
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