{
  "category": "Refrigerant Line Sets",
  "vertical": "hvacr",
  "source": "https://getclaro.ai/resources/attribute-library/hvacr/refrigerant-line-sets/",
  "status": "editorial-draft",
  "note": "Editorial reference template. Example values show format only and do not describe a real SKU. Not an official ETIM or ECLASS class.",
  "groups": [
    {
      "key": "identity",
      "name": "Identity",
      "check": "Preserve leading zeros and punctuation, validate against the manufacturer record, and check the GTIN check digit and packaging level before linking."
    },
    {
      "key": "technical",
      "name": "Technical specifications",
      "check": "Store the number and unit separately. Convert only when the source unit and test conditions are known."
    },
    {
      "key": "selection",
      "name": "Selection attributes",
      "check": "Map supplier wording to a governed vocabulary only after checking the source text and which variant it applies to."
    },
    {
      "key": "fit",
      "name": "Fit & compatibility",
      "check": "Keep model and series qualifiers. A similar-looking part is not a verified fit until a source says so."
    },
    {
      "key": "evidence",
      "name": "Evidence & compliance",
      "check": "Link the manufacturer document or label with its edition or date. Never copy a certification from a neighboring SKU."
    }
  ],
  "fields": [
    {
      "key": "manufacturer_part_number",
      "label": "Manufacturer Part Number",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "LS-1412-25-F"
    },
    {
      "key": "gtin_upc",
      "label": "GTIN / UPC",
      "group": "identity",
      "priority": "core",
      "value_type": "identifier",
      "unit": null,
      "example_format": "012345141256"
    },
    {
      "key": "liquid_line_od",
      "label": "Liquid Line OD",
      "group": "technical",
      "priority": "core",
      "value_type": "controlled",
      "unit": "in",
      "example_format": "1/4 in OD"
    },
    {
      "key": "suction_vapor_line_od",
      "label": "Suction (Vapor) Line OD",
      "group": "technical",
      "priority": "core",
      "value_type": "controlled",
      "unit": "in",
      "example_format": "1/2 in OD"
    },
    {
      "key": "overall_length",
      "label": "Overall Length",
      "group": "technical",
      "priority": "core",
      "value_type": "number",
      "unit": "ft",
      "example_format": "25"
    },
    {
      "key": "line_set_type",
      "label": "Line Set Type",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Mini-split (ductless)"
    },
    {
      "key": "insulation_wall_thickness",
      "label": "Insulation Wall Thickness",
      "group": "technical",
      "priority": "core",
      "value_type": "controlled",
      "unit": "in",
      "example_format": "3/8 in"
    },
    {
      "key": "insulation_material",
      "label": "Insulation Material",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Closed-cell elastomeric, black"
    },
    {
      "key": "end_connection_type",
      "label": "End Connection Type",
      "group": "fit",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Flared both ends, flare nuts installed"
    },
    {
      "key": "copper_alloy",
      "label": "Copper Alloy",
      "group": "selection",
      "priority": "core",
      "value_type": "controlled",
      "unit": null,
      "example_format": "C12200 (DHP copper)"
    },
    {
      "key": "copper_tube_wall_thickness",
      "label": "Copper Tube Wall Thickness",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "text",
      "unit": "in",
      "example_format": "0.030 (liquid) / 0.032 (suction)"
    },
    {
      "key": "rated_working_pressure",
      "label": "Rated Working Pressure",
      "group": "technical",
      "priority": "differentiating",
      "value_type": "text",
      "unit": "psi",
      "example_format": "Liquid 1/4 in: 1,590 / suction 1/2 in: 810 (annealed, per manufacturer table)"
    },
    {
      "key": "refrigerant_compatibility",
      "label": "Refrigerant Compatibility",
      "group": "fit",
      "priority": "differentiating",
      "value_type": "text",
      "unit": null,
      "example_format": "R-410A, R-454B, R-32"
    },
    {
      "key": "jacket_type_uv_resistance",
      "label": "Jacket Type / UV Resistance",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "controlled",
      "unit": null,
      "example_format": "UV-resistant polymer jacket"
    },
    {
      "key": "kit_contents",
      "label": "Kit Contents",
      "group": "selection",
      "priority": "differentiating",
      "value_type": "text",
      "unit": null,
      "example_format": "Line set, 14/4 communication cable, 5/8 in drain hose, flare nuts"
    },
    {
      "key": "astm_b280_conformance",
      "label": "ASTM B280 Conformance",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "Yes (cleaned, dehydrated and capped)"
    },
    {
      "key": "insulation_surface_burning_rating",
      "label": "Insulation Surface Burning Rating",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "25/50 per ASTM E84"
    },
    {
      "key": "country_of_origin",
      "label": "Country of Origin",
      "group": "evidence",
      "priority": "channel",
      "value_type": "controlled",
      "unit": null,
      "example_format": "United States"
    }
  ],
  "evidence_columns": [
    "raw_value",
    "normalized_value",
    "source_uri",
    "source_page_or_row",
    "confidence",
    "review_state",
    "last_verified"
  ],
  "normalization_examples": [
    {
      "attribute": "Suction (Vapor) Line OD",
      "variants": [
        "1/2",
        "1/2\"",
        ".500",
        "1/2 in OD",
        "12.7 mm",
        "0.5"
      ],
      "normalized": "0.500 in OD"
    },
    {
      "attribute": "Insulation Wall Thickness",
      "variants": [
        "3/8\"",
        ".375",
        "3/8 in wall",
        "9.5 mm",
        "10mm",
        "3/8 inch"
      ],
      "normalized": "0.375 in"
    },
    {
      "attribute": "End Connection Type",
      "variants": [
        "Flared",
        "Flare",
        "Pre-flared",
        "Flared/Flared",
        "Flare x Flare",
        "F/F"
      ],
      "normalized": "Flared, both ends"
    }
  ]
}