855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 291
Extracted Content
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Ground source heat pumps . 32°F (0°C) entering liquid temperature
- Liquid source heat pump and heat recovery water-chilling packages . 44 ° F (6 ° C) heating source leaving liquid temperature.
Reference ASHRAE 90.1, Section 6.8 Tables to identify applicable rated conditions. For equipment with efficiency ratings using HSPF, AFUE, or any rating other than COP or COPH, convert these ratings to COP using Table 2 before calculating the weighted average COP.
Additional considerations For heat pump water-chilling packages or heat recovery water-chilling packages rated per ASHRAE 90.1, Table 6.8.1-16, adjust COP using the equations from Table 2 to align equipment ratings for entering/leaving heating liquid temperature at medium, high, or boost conditions with the default low ratings.
Table 2. Determination of equipment COP for calculation of weighted average COP
| Heating equipment type | Heating equipment efficiency rating | Equation to convert to COP | Test procedure |
|---|---|---|---|
| Electrically operated air- cooled unitary heat pumps | HSPF2 | = -0.0296 x HSPF22 + 0.7134 x HSPF2 | AHRI 210/240- 2023 |
| Electrically operated air- cooled unitary heat pumps | SCOP2H | = -0.3446 × SCOPH22 + 2.434 × SCOPH2 | AHRI 210/240- 2023 |
| Electrically operated air- cooled unitary heat pumps | COPH at 17°F db/15°F wb (–8.3°C db/–9.4°C wb) | = COPH | AHRI 340/360 |
| PTHP | COPH | = COPH | AHRI 310/380 |
| SPVHP | COPH | = COPH | AHRI 390 |
| VRF air cooled | HSPF | = -0.0296 x HSPF2 + 0.7134 x HSPF | AHRI 1230 |
| VRF air cooled | COPH at 17°F db/15°F wb (–8.3°C db/–9.4°C wb) | = COPH | AHRI 1230 |
| VRF air cooled | SCOPH | = -0.3446 × SCOPH2 + 2.434 × SCOPH | AHRI 210/240- 2023 |
| VRF water source | COPH 68°F (20°C) entering water | = COPH | AHRI 1230 |
| VRF groundwater source | COPH 50°F (10°C) entering water | = COPH | AHRI 1230 |
| VRF ground source | COPH 32°F (0°C) entering water | = COPH | AHRI 1230 |
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 281