Khalim Conn-Kowlessar ff80fb4b5c Slice S0380.176: Table 4b combi sub-row dispatch for (61)m ... SAP 10.2 §4 line 7702 (PDF p.137) defines (61)m as "Combi loss for each month from Table 3a, 3b or 3c (enter '0' if not a combi boiler)". Table 4b sub-rows 128 / 129 / 130 are explicit combi sub- rows per the spec row names: 128: Combi oil boiler, pre-1998 129: Combi oil boiler, 1998 or later 130: Condensing combi oil boiler Pre-slice `_table_3a_combi_loss_default_applies` gated only on `main_heating_category ∈ {1, 2, 3, 6}`. The Elmhurst mapper leaves `main_heating_category=None` on Table 4b liquid-fuel boilers (FAME, HVO, B30K) — the cascade fell through to (61)m=0 despite the lodged SAP code being a combi sub-row, under-counting (62)m by 600 kWh/yr for FAME combi certs. Extended the helper with a `_TABLE_4B_COMBI_OR_CPSU_CODES` fall- through (set already exists for the symmetric `_primary_loss_ applies` Table 4b non-combi branch — see S0380.146). The set carries the canonical combi + CPSU sub-row codes (103/104/107/108/112/113/ 118/120-123/128-130). For cylinder-lodged certs the existing `if epc.has_hot_water_cylinder: combi_loss_override = zero_monthly` guard in `_water_heating_worksheet_and_gains` still pre-empts the combi-loss fall-through correctly — non-combi codes with cylinders remain (61)m=0. Closures (heating-systems corpus 001431): oil 3 (code 128, FAME, no cylinder) ALL EXACT (±0.0000): ΔSAP_c +2.5863 → -0.0000 Δcost -£61.89 → -£0.00 ΔCO2 -14.58 → +0.00 ΔPE -967.10 → +0.00 oil 4 (code 129, FAME, no cylinder) ALL EXACT (±0.0000): ΔSAP_c +2.5603 → +0.0000 Δcost -£56.66 → +£0.00 ΔCO2 -13.35 → +0.00 ΔPE -884.90 → +0.00 Oil 6 (code 126, NOT a combi, with cylinder) unchanged — the fix is gated on the combi sub-row set. Cohort moves from 9 pinned residuals to 7. 933 pass + 0 fail (+1 new mapper test). Pyright net-zero on cert_ to_inputs.py + tests. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>		2026-06-04 15:40:26 +00:00
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fixtures	Slice S0380.52: cert 000565 Elmhurst-only mapper-driven cascade pin + glazing-label coverage	2026-05-28 22:03:52 +00:00
__init__.py	Map to RdSapSiteNotes from site notes JSON 🟥	2026-04-16 13:54:03 +00:00
test_elmhurst_end_to_end.py	Slice S0380.17: map Elmhurst §11 glazing-type labels to SAP10 codes	2026-05-27 23:05:52 +00:00
test_elmhurst_extractor.py	extract window frame details from elmhurst site notes 🟥	2026-04-27 15:50:25 +00:00
test_end_to_end.py	P6.1 follow-on: unbox BuildingPartIdentifier at backend boundaries	2026-05-20 09:58:23 +00:00
test_extractor.py	Handle wall thickness "Unmeasurable" 🟩	2026-04-30 16:41:16 +00:00
test_heating_systems_corpus.py	Slice S0380.176: Table 4b combi sub-row dispatch for (61)m	2026-06-04 15:40:26 +00:00
test_pdf.py	rename example site notes to PasHub_ and add Elmhurst example	2026-04-24 13:01:51 +00:00
test_summary_pdf_mapper_chain.py	Slice S0380.143: RdSAP 10 §10.11 Table 29 — derive cylinder insulation defaults from construction age band when §15.1 lodges "No Access"	2026-05-31 21:03:10 +00:00