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HVAC
NATE Hydronics Gas Service Specialty
Hydronic Boiler Diagnostics
Vérification des connaissances
Hydronic Boiler Diagnostics
Vérification des connaissances
Vérification des connaissances
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A circulator pump is running but one zone is not heating. The supply pipe to that zone is cool but the return pipe is also cool. What does this indicate?
A
The circulator impeller has failed and no flow is occurring in the entire system
B
The expansion tank air charge is too low
C
The boiler is producing adequate heat but the zone valve is not opening
D
The aquastat differential is set too wide
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