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Elmhurst Summary §15.1 sometimes lodges "Cylinder Size: No Access" (the
inaccessible-cylinder lodging form). Pre-slice the mapper strict-raised
`UnmappedElmhurstLabel` because `_ELMHURST_CYLINDER_SIZE_LABEL_TO_SAP10`
only carried the three lodged-size labels (Normal/Medium/Large).
Per RdSAP 10 Specification Table 28 page 55 ("Cylinder size"):
> "Inaccessible:
> - if off-peak electric dual immersion: 210 litres
> - if from solid fuel boiler: 160 litres
> - otherwise: 110 litres"
And per §10.5.1 page 53:
> "An electric immersion is assumed dual in the following cases:
> - cylinder is inaccessible and electricity tariff is dual"
So the 210-L "off-peak electric dual immersion" branch fires automatically
when both (a) cylinder is inaccessible AND (b) water heating is electric
AND (c) meter type is dual / off-peak (no separate dual-immersion lodging
required).
New helper `_resolve_elmhurst_inaccessible_cylinder_size` keys off
§15.0 "Water Heating Fuel Type" + §14.2 "Electricity meter type":
- solid fuel water heating fuel (Anthracite, House coal, Wood, etc.)
→ 160 L → SAP10 cylinder_size enum 3 (Medium)
- "Electricity" + dual/18-hour/24-hour/off-peak meter
→ 210 L → SAP10 cylinder_size enum 4 (Large)
- otherwise → 110 L → SAP10 cylinder_size enum 2 (Normal)
`_elmhurst_cylinder_size_code` extended with optional water_heating_fuel
+ meter_type kwargs; the single call site at line 4459 threads
`survey.water_heating.water_heating_fuel_type` and
`survey.meters.electricity_meter_type`.
Property 001431 (the heating-systems corpus dwelling) lodges `pcdb 1`
with §14.0 Potterton oil boiler (PCDF 716) + §15.0 "Water Heating Fuel
Type: Heating oil" + §14.2 "Electricity meter type: 18 Hour" — water
fuel is oil (not electric, not solid fuel) → "otherwise" branch → 110 L
→ enum 2 (Normal). `pcdb 1` now cascade-executes (corpus tally 34 → 35
OK / 41 populated).
Extended handover suite at HEAD post-slice: **831 pass, 0 fail**
(was 830 + 1 new AAA test).
Pyright net-zero on touched files (45 → 45 — pre-existing errors
unrelated).
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
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|---|---|---|
| .. | ||
| fixtures | ||
| __init__.py | ||
| test_elmhurst_end_to_end.py | ||
| test_elmhurst_extractor.py | ||
| test_end_to_end.py | ||
| test_extractor.py | ||
| test_pdf.py | ||
| test_summary_pdf_mapper_chain.py | ||