Which of the following is true regarding the refrigerant piping on a rooftop package unit?
A. The discharge and liquid lines must be field installed.
B. The suction and liquid lines must be field installed.
C. The discharge and suction lines must be field installed.
D. No refrigerant lines are field installed.
The true statement regarding the refrigerant piping in a rooftop package unit.
Answer to Problem 1RQ
The true statement regarding the refrigerant piping in a rooftop package unit is No refrigerant lines are field installed.
Explanation of Solution
The rooftop package unit refers to a single housing which consist all the major components of the system. This package unit is assembled in the factory and charged in the factory. This unit is a complete package of the entire essential component required for the refrigeration or heat pump. It consists
- Condensers.
- Compressors.
- Metering devices.
- Evaporators.
These components are installed in the same cabin which is called rooftop package unit. Hence, there is no need for any refrigerant line. Therefore, after the installation of the entire component in a single unit there is no requirement to install the refrigeration line in the system. Hence, the fourth statement (no refrigerant lines are field installed) is true about the refrigerant piping in a rooftop package unit.
Conclusion:
The true statement regarding the refrigerant piping in a rooftop package unit is No refrigerant lines are field installed.
Want to see more full solutions like this?
Chapter 50 Solutions
Refrigeration and Air Conditioning Technology (MindTap Course List)
- Briefly describe an oil-less refrigerant recovery unit.arrow_forwardWhich of the following statements is not true about orifice tube systems? The suction line must be cool to the touch from the evaporator outlet to the compressor. The liquid line from the condenser outlet to the evaporator inlet should be cool. The evaporator should feel very cold. The accumulator must be cool to the touch.arrow_forwardDescribe cascade refrigeration and tell why more than one refrigerant is used.arrow_forward
- Why do some condensers have to be cleaned with brushes and others with chemicals?arrow_forwardWhen evacuating a refrigeration system that has solenoid valves, what special procedure must be followed?arrow_forwardWhere must a suction-line drier be placed in a heat pump after a motor burnout?arrow_forward
- Please answer question number 2 thank you. Refrigeration systems subjectarrow_forward1. A temperature drop in the coolant entering the primary loop can be dangerous because,(a) Reactivity can increase as a result.(b) Pressure in the primary loop will decrease and water can flash to steam.(c) All of the above.(d) None of the abovearrow_forward1. What other substance circulates in the refrigeration system with the refrigerant? 2. What would happen if there were more refrigerant in the system than the condenser and receiver could hold?arrow_forward
- What kind of circuit balancing valve is used in the hot and chilled water piping? a. balancing globe valve b. shut-off balancing valve c. pressure balancing valve d. pressure by-pass valvearrow_forwardThe approach temperature for the evaporator isA. the difference between the suction and head pressuresconverted to temperature.B. the difference between the refrigerant boiling temperatureand the suction-line temperature.C. the difference between the refrigerant boiling temperatureand the inlet water temperature.D. the difference between the refrigerant boiling temperatureand the leaving-water temperature.arrow_forwardGeneral types of Expansion device and Condenser used in a refrigeration system ?arrow_forward
- Refrigeration and Air Conditioning Technology (Mi...Mechanical EngineeringISBN:9781305578296Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill JohnsonPublisher:Cengage LearningAutomotive Technology: A Systems Approach (MindTa...Mechanical EngineeringISBN:9781133612315Author:Jack Erjavec, Rob ThompsonPublisher:Cengage Learning