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// CODE SNIPPET

6.5.6.2 Heat Recovery for Service Water Heating

Energy Standard for Buildings Except Low-Rise Residential Buildings 2016 of Illinois > 6 Heating, Ventilating, and Air Conditioning > 6.5 Prescriptive Path > 6.5.6 Energy Recovery > 6.5.6.2 Heat Recovery for Service Water Heating
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6.5.6.2.1

Condenser heat recovery systems shall be installed for heating or preheating of service hot water provided all of the following are true:
  1. The facility operates 24 hours a day.
  2. The total installed heat-rejection capacity of the water-cooled systems exceeds 6,000,000 Btu/h of heat rejection.
  3. The design service water-heating load exceeds 1,000,000 Btu/h.

6.5.6.2.2

The required heat recovery system shall have the capacity to provide the smaller of
  1. 60% of the peak heat-rejection load at design conditions or
  2. preheat of the peak service hot-water draw to 85°F.
Exceptions to 6.5.6.2.2
  1. Facilities that employ condenser heat recovery for space heating with a heat recovery design exceeding 30% of the peak water-cooled condenser load at design conditions.
  2. Facilities that provide 60% of their service water heating from site-solar energy or site-recovered energy or from other sources.

Related Code Sections


6.5.6.2 Heating, Ventilating, and Air Conditioning, Heat Recovery for Service Water Heating
Condenser heat recovery systems shall be installed for heating or preheating of service hot water provided all of the following are true: The ...
Energy Standard for Buildings Except Low-Rise Residential Buildings 2016 of Illinois > 6 Heating, Ventilating, and Air Conditioning > 6.5 Prescriptive Path > 6.5.6 Energy Recovery > 6.5.6.2 Heat Recovery for Service Water Heating
C403.9.5 [CE] Commercial Energy Efficiency, Heat Recovery for Service Water Heating
Condenser heat recovery shall be installed for heating or reheating of service hot water provided that the facility operates 24 hours a day ...
2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings > 4 [CE] Commercial Energy Efficiency > C403 Building Mechanical Systems > C403.9 Heat Rejection Equipment > C403.9.5 Heat Recovery for Service Water Heating
C406.7.1 [CE] Commercial Energy Efficiency, Load Fraction
comply with Section C403.9.5: Waste heat recovery from service hot water, heat-recovery chillers, building equipment, or process equipment. On-site ...
2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings > 4 [CE] Commercial Energy Efficiency > C406 Additional Efficiency Package Options > C406.7 Reduced Energy Use in Service Water Heating > C406.7.1 Load Fraction
Section C406 [CE] Commercial Energy Efficiency, Additional Efficiency Package Options
water requirements if the building shall otherwise comply with Section C403.9.5: Waste heat recovery from service hot water, heat-recovery chillers ...
2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings > 4 [CE] Commercial Energy Efficiency > C406 Additional Efficiency Package Options
R403.5.4 [RE] Residential Energy Efficiency, Drain Water Heat Recovery Units
Drain water heat recovery units shall comply with CSA B55.2. Drain water heat recovery units shall be tested in accordance with CSA B55.1. Potable ...
2018 Illinois Energy Conservation Code Standards for Privately Funded Commercial Facilities and Standards for Residential Buildings > 4 [RE] Residential Energy Efficiency > R403 Systems > R403.5 Service Hot Water Systems > R403.5.4 Drain Water Heat Recovery Units
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