text: and â‰¤2,500,000\nThermal Efficiency\nAppendix A, Section 2.\n\n\nSteam\nOil-fired\n>2,500,000 and â‰¤5,000,000\nThermal Efficiency\nAppendix A, Section 2.\n\n\n\u2003\n\n>5,000,000\nThermal Efficiency\nAppendix A, Section 2.OR\nAppendix A, Section 3. with Section 2.4.3.2.\n\n\n\n*\u2009Equipment classes for commercial packaged boilers as of July 22, 2009 (74 FR 36355) distinguish between gas-fired natural draft and all other gas-fired (except natural draft).\n\n(c) Field Tests. The field test provisions of appendix A may be used only to test a unit of commercial packaged boiler with rated input greater than 5,000,000 Btu/h.\n[81 FR 89305, Dec. 9, 2016]\n\n\nEnergy Efficiency Standards\n\n', lookup_str='', metadata={'source': 'https://www.govinfo.gov/content/pkg/CFR-2018-title10-vol3/xml/CFR-2018-title10-vol3-sec431-86.xml'}, lookup_index=0)]Using proxiesâ€‹Sometimes you might need to use proxies to get around IP blocks. You can pass in a dictionary of proxies to the loader (and requests underneath) to use them.loader = WebBaseLoader(    "https://www.walmart.com/search?q=parrots",    proxies={        "http": "http://{username}:{password}:@proxy.service.com:6666/",        "https": "https://{username}:{password}:@proxy.service.com:6666/",    },)docs = loader.load()PreviousWeatherNextWhatsApp ChatLoading