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An LPG-boiler dwelling on the Summary → from_elmhurst_site_notes path mapped to main_fuel_type=26 (mains gas), making it indistinguishable from a mains-gas boiler downstream — wrong Table 12/32 cost / CO2 / PE (bottled LPG is ~10.30 p/kWh vs mains gas 3.48), and it defeats any "non-gas → gas only with a mains-gas connection" gate (an LPG dwelling looks already-gas). Root cause: the recommendation worksheets lodge the boiler carrier as §15.0 "Water Heating Fuel Type: Bottled gas" (§14.0 carries only SAP code 115, a Table 4b gas-family row, + "Main gas: Yes" in §14.2 — a mains-gas CONNECTION, not the heating fuel). "Bottled gas" was absent from `_ELMHURST_MAIN_FUEL_TO_SAP10`, so the §15.0 fuel resolved to None and `_elmhurst_gas_boiler_main_fuel` fell through priority-1 to the mains-gas meter flag → 26. Map "Bottled gas" → 3 (bottled LPG MAIN heating): code 3 routes via `API_FUEL_TO_TABLE_32`/`API_FUEL_TO_TABLE_12` → Table-code 3 (10.30 / 9.46 p/kWh). NOT the legacy "LPG bottled": 5 entry — API code 5 = anthracite, and `canonical_fuel_code` resolves the same-valued Table-32 code 5 to anthracite (3.64 p/kWh), so a 5 here mis-prices the dwelling as cheap solid fuel (verified: a 5 mapping moved SAP the WRONG way, 42.33 → 45.11; code 3 moves it to -6.40 vs the worksheet's -6.6499). Also add 3 to `_GAS_LPG_MAIN_FUEL_CODES` so the §15.0-lodged bottled-LPG water fuel is adopted as the boiler's space-heating carrier (priority 1) instead of the meter flag. Effect: main_fuel_type=3 (bottled LPG) and water_heating_fuel=3 (was None). Mains-gas certs still → 26 (full regression suite green bar the 3 pre-existing unrelated fails); the MissingMainFuelType tripwire still fires for genuinely-undeterminable carriers. Spec: SAP 10.2 Table 12 / RdSAP 10 Table 32 (PDF p.95) — bottled LPG main heating fuel code 3. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> |
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| .. | ||
| elmhurst_site_notes_1_text.json | ||
| elmhurst_site_notes_2_text.json | ||
| ElmhurstSiteNotes.pdf | ||
| ElmhurstSiteNotes_2.pdf | ||
| pashub_site_notes_1_text.json | ||
| pashub_site_notes_2_text.json | ||
| pashub_site_notes_3_text.json | ||
| pashub_site_notes_4_text.json | ||
| pashub_site_notes_5_text.json | ||
| pashub_site_notes_6_text.json | ||
| pashub_site_notes_7_text.json | ||
| PasHubSiteNotes_1.pdf | ||
| PasHubSiteNotes_2.pdf | ||
| PasHubSiteNotes_3.pdf | ||
| PasHubSiteNotes_4.pdf | ||
| PasHubSiteNotes_5.pdf | ||
| PasHubSiteNotes_6.pdf | ||
| PasHubSiteNotes_7.pdf | ||
| Summary_000474.pdf | ||
| Summary_000477.pdf | ||
| Summary_000480.pdf | ||
| Summary_000487.pdf | ||
| Summary_000490.pdf | ||
| Summary_000516.pdf | ||
| Summary_000565.pdf | ||
| Summary_000784.pdf | ||
| Summary_000884.pdf | ||
| Summary_000888.pdf | ||
| Summary_000889.pdf | ||
| Summary_000890.pdf | ||
| Summary_000897.pdf | ||
| Summary_000898.pdf | ||
| Summary_000899.pdf | ||
| Summary_000900.pdf | ||
| Summary_000901.pdf | ||
| Summary_000902.pdf | ||
| Summary_000903.pdf | ||
| Summary_000904.pdf | ||
| Summary_000910.pdf | ||
| Summary_001431_6035.pdf | ||
| Summary_001431_case5.pdf | ||
| Summary_001431_case6.pdf | ||
| Summary_001431_case7.pdf | ||
| Summary_001431_case20.pdf | ||
| Summary_001431_case21.pdf | ||
| Summary_001431_double_glazing.pdf | ||
| Summary_001431_gas_combi.pdf | ||
| Summary_001431_lpg_boiler.pdf | ||
| Summary_001431_rr8w.pdf | ||
| Summary_001431_rr_ext.pdf | ||
| Summary_001431_topfloor_flat.pdf | ||
| Summary_001479.pdf | ||