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HVAC
BPI Heating Professional
Building Envelope Interaction
Knowledge Check
Building Envelope Interaction
Knowledge Check
Knowledge Check
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A wood-burning fireplace in a tight home creates a strong negative pressure when operating. What is the greatest combustion safety concern when the fireplace is used simultaneously with a naturally vented gas water heater?
A
The fireplace chimney and water heater flue may share combustion air, reducing fireplace combustion efficiency
B
The fireplace and water heater cannot operate simultaneously due to code restrictions
C
The strong depressurization from the fireplace can backdraft the water heater flue, spilling CO into the living space
D
The fireplace can overheat the water heater vent connector
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