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Question
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Which of these is not a proper approach for evaluating combustion safety for gas-fired water heaters, boilers, and furnaces?
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Evaluate CO concentrations in both the appliance flue and in the occupied space.
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Assess whether the vent is installed according to code.
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Operate appliances at low settings to prevent buildup of ambient CO.
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Inspect vents and heat exchangers for corrosion or cracking.
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