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An oil STORAGE combi (Worcester Greenstar Heatslave II, PCDB 18415,
store_type 1) zeroed its internal-store loss: pcdb_combi_loss_override
defers on store_type in {1,2,3} and a combi has no cylinder, so line
(56) dropped to zero — under-costing hot water and over-rating SAP by
+2.0..+4.9 across the five LRHA WAVE 3 oil combis.
SAP 10.2 Table 2 note b) now includes the store loss when the combi's
efficiency is from the PCDB: the PCDB store volume (field 42) and
insulation thickness (field 44) feed Table 2/2a with the Table 2b
storage-combi temperature factor, reproducing the accredited Elmhurst
P960 worksheet exactly (5.4175 kWh/day, Jan 167.94, ~1977 kWh/yr).
Cohort: within-0.5 55.3% -> 58.3%, MAE 0.675 -> 0.531; ratchet
tightened accordingly.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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| .. | ||
| handler | ||
| tests | ||
| __init__.py | ||
| db_writer.py | ||
| elmhurst_extractor.py | ||
| extractor.py | ||
| local_runner.py | ||
| parser.py | ||
| pdf.py | ||