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Continuation of S0380.135's Table 4a per-heating-system responsiveness dispatch (`_RESPONSIVENESS_BY_SAP_CODE` in cert_to_inputs.py). The solid-fuel coverage closed 10 corpus variants; this slice extends the dispatch to the electric heating SAP code ranges from SAP 10.2 Table 4a (PDF p.170): 401 Old (large volume) storage heaters R=0.00 402 Slimline storage heaters R=0.20 403 Convector storage heaters R=0.20 404 Fan storage heaters R=0.40 405 Slimline storage heaters + Celect-type ctrl R=0.40 407 Fan storage heaters + Celect-type ctrl R=0.60 408 Integrated storage+direct-acting heater R=0.60 409 High heat retention storage heaters (§9.2.8) R=0.80 421 In concrete slab (off-peak only) R=0.00 422 Integrated (storage+direct-acting) R=0.25 423 Integrated with low off-peak R=0.50 424 In screed above insulation R=0.75 425 In timber floor / immediately below covering R=1.00 515 Electricaire system R=0.75 691 Panel, convector or radiant heaters R=1.00 694 Water- or oil-filled radiators R=1.00 701 Electric ceiling heating R=0.75 A few electric storage codes (402, 403, 405, 407) carry a *different* R value in the 24-hour tariff section of Table 4a vs the off-peak section (e.g. Slimline 402 = R=0.20 off-peak / R=0.40 24-hour). This dict captures the off-peak value as the default because the 24-hour tariff is rare in the corpus (no variant lodges it). If a 24-hour- tariff cert surfaces with one of these codes the dispatch needs to be promoted to a (sap_code, tariff) lookup; until then the off-peak default applies. Heating-systems corpus impact — 6 electric corpus variants re-pinned: variant SAP R ΔSAP was ΔPE was electric 3 401 0.00 +9.43 +14.70 -1059 -3189 electric 5 402 0.20 +6.76 +10.97 -96 -1798 electric 6 404 0.40 +7.82 +10.97 -494 -1770 electric 7 408 0.60 +7.58 +9.68 -428 -1277 electric 8 409 0.80 +5.84 +6.89 +200 -224 electric 9 421 0.00 +6.77 +12.03 +154 -1976 3/6 PE residuals close to ±200 kWh (electric 5/8/9). The remaining +5..+9 SAP residuals across all electric variants suggest a separate shared cascade gap (likely Table 12a high/low-rate fraction or pumps/ fans electric handling — fuel cost is consistently under-counted by ~£100-£220 across the cluster). Queued for follow-up. electric 1 (SAP 191 Direct acting electric boiler) and electric 2 (SAP 524 Air source heat pump) unchanged — both have spec R=1.0 already (matched the Table 4d emitter fallback). Extended handover suite: 880 pass / 0 fail (+1 new AAA test covering the 17 electric R-dispatch entries). Pyright net-zero on touched files (43 → 43). No golden fixture impact — no golden cert lodges a covered electric SAP code via the cascade path that would shift residuals. Co-Authored-By: Claude Opus 4.7 <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 | ||