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Recognise community boilers as a heat-network system 🟥

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Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
This commit is contained in:
Khalim Conn-Kowlessar 2026-06-30 17:36:41 +00:00
parent 0c12f70589
commit c7b2fe7a1b
1 changed files with 16 additions and 0 deletions
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16
tests/domain/epc/test_main_heating_system_overlay.py
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@ -488,3 +488,19 @@ def test_air_source_heat_pump_drags_its_coherent_companions() -> None:
assert heating.main_heating_category == 4
assert heating.main_fuel_type == 29
assert heating.meter_type == "Single"
def test_community_boilers_decode_to_the_heat_network_boiler_code() -> None:
# A community/heat-network scheme driven by boilers is SAP Table 4a code 301
# (the calculator derives the heat-source efficiency + DLF from it). It must
# decode to 301, not the Gas CPSU (120) the under-populated taxonomy forced —
# a single-dwelling gas wet boiler is the wrong picture for a heat network
# (ADR-0041). A generic "Community heating" with no named source stays None.
# Act
simulation = main_heating_overlay_for("Community heating, boilers", 0)
# Assert — SAP Table 4a code 301 (boiler-driven community heating).
assert simulation is not None
assert simulation.heating is not None
assert simulation.heating.sap_main_heating_code == 301