Why should a carbon monoxide detector be used in any room where gas-fired space heaters are being ...

Why should a carbon monoxide detector be used in any room where gas-fired space heaters are being used?

A) The efficiency of gas fired space heaters drops when the CO level in the room exceeds 500 ppm
B) Gas fired space heaters can produce carbon monoxide if the space they are operating in does not have adequate combustion air
C) Since CO is an integral component of natural gas, a CO detector will alarm if there are any small gas leaks in the gas line
D) High levels of CO can cause nuisance trips of the space heater's oxygen depletion sensor

Q. 2

What is the main safety concern for any type of gas fired room heater?

A) they are dangerous if used as a drying rack for wet clothing
B) the space where they are installed must have sufficient infiltration to supply the necessary combustion air
C) the electrical wiring to the unit must be heavy gauge to accommodate a high current draw
D) they will overheat if the ductwork is undersized

Q. 3

When visually inspecting a weldment the inspector looks for:

A) Melt-through B) Reinforcement of cap
C) Root concavity D) All of the above

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Why should a carbon monoxide detector be used in any room where gas-fired space heaters are being ...

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