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HVAC
HVAC Excellence Professional Level Technician
Combustion Analysis - CO, O2, Stack Temperature & Efficiency
Knowledge Check
Combustion Analysis - CO, O2, Stack Temperature & Efficiency
Knowledge Check
Knowledge Check
1 / 15
A cracked heat exchanger is confirmed by which diagnostic method?
A
Checking the gas pressure at the manifold - low gas pressure causes heat exchanger cracking
B
Measuring draft pressure with a manometer - negative pressure confirms a sound heat exchanger
C
Measuring flame color with a fiber optic camera - a blue flame indicates a cracked heat exchanger
D
Running the furnace with the blower off and measuring CO in the supply air plenum - CO above 2 ppm in supply air with the burner running indicates combustion gas infiltration through a crack
Check Answer
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