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Where on the suction line should you never place the TXV sensing bulb?

A. On the top of the suction line
B. On the right side of the suction line
C. On the left side of the suction line
D. On the bottom of the suction line

Answer :

Final answer:

The TXV sensing bulb should never be placed on the top of the suction line as this position can cause inaccurate readings due to the accumulation of oil and non-condensable gases. It should instead be attached to the side of the suction line for direct contact with the refrigerant.

Explanation:

The question pertains to the proper installation of the Thermostatic Expansion Valve (TXV) sensing bulb on the suction line of a refrigeration or air conditioning system. The correct placement is crucial for optimal performance of the TXV, which controls the flow of refrigerant into the evaporator based on the refrigerant's temperature and pressure. When installing the TXV sensing bulb, it should never be placed on the top of the suction line, because this position is prone to accumulating oil and non-condensable gases which can insulate the bulb and impede its ability to accurately sense the temperature of the refrigerant. Instead, it should ideally be attached to the side of the suction line to ensure that it is in direct contact with the refrigerant flow for more accurate temperature readings.

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