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0747 Heat Shield or Flame Rollout Shield - Heating - Gas Burners - Image Text: In forced air gas furnace > watch for scorching of the metal above and around the heat shield - indicating possible flame rollout > make sure that the heat shield is properly secured > heat shield > gas valve and piping not shown for clarity > Inspection tip (beyond standards): remove the heat shield on older furnaces and use a mirror to get a better look at the heat exchanger |
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