Model/backend/documents_parser
Khalim Conn-Kowlessar 57241322ea S0380.185: record CH6 pin-forever proof — distribution-loss is a Summary-export gap
CH6's P960 worksheet input lodges Distribution Loss = "Two adjoining
dwellings sharing a single heating system" → (306) DLF = 1.0000, vs CH4's
"Calculated" → 1.5 → (306) = 1.4500. That DLF choice swings SAP/cost/CO2/PE
materially, but it is NOT present in the Summary PDF that the corpus pipeline
consumes (Summary → ElmhurstSiteNotesExtractor → mapper → calculator).

Proven empirically with a user-supplied controlled pair (CH adjoined
dwellings/Summary_001431 (1) vs (2)): the two Summaries are byte-identical
across every RdSAP INPUT field, differing only in the derived header
(SAP 80 vs 75, bill £954 vs £1237, emissions 5.407 vs 7.394 t). A
case-insensitive scan of the CH6 Summary for "distribution"/"adjoin" returns
0 hits. Since CH4/CH6 Summaries are themselves identical bar fuel type, no
Summary-derivable rule can yield CH4=1.45 AND CH6=1.0.

Doc-only change (comment in _EXPECTATIONS); 20/20 community-heating corpus
tests pass. Closes the CH6 re-litigation: pin held.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-02 19:21:28 +00:00
..
handler address JTK review comments 2026-04-20 15:11:17 +00:00
tests S0380.185: record CH6 pin-forever proof — distribution-loss is a Summary-export gap 2026-06-02 19:21:28 +00:00
__init__.py Map to RdSapSiteNotes from site notes JSON 🟥 2026-04-16 13:54:03 +00:00
db_writer.py include updating epc_property_data to pashub to ara workflow 2026-04-29 09:55:14 +00:00
elmhurst_extractor.py Slice S0380.170: Community heating mapper unblock (Table 12 dispatch) 2026-06-02 10:50:21 +00:00
extractor.py Handle wall thickness "Unmeasurable" 🟩 2026-04-30 16:41:16 +00:00
local_runner.py update local runner to work for elmhurst 2026-04-24 14:01:36 +00:00
parser.py load ecmk site notes to db 2026-04-29 11:20:47 +00:00
pdf.py update local runner to work for elmhurst 2026-04-24 14:01:36 +00:00