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6.5.6.2 Heat Recovery for Service Water Heating
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The required heat recovery system shall have the capacity to provide the smaller of
- 60% of the peak heat-rejection load at design conditions or
- preheat of the peak service hot-water draw to 85°F.
Exceptions to 6.5.6.2.2
- 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.
- Facilities that provide 60% of their service water heating from site-solar energy or site-recovered energy or from other sources.
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