| A box solenoid valve used in a refrigeration system should be installed in what manner? |
| A) with the axis of the solenoid horizontal, controlled by a thermostat sensing the temperature of the box, and upstream of the thermal expansion valve |
| B) upright, controlled by a thermostat sensing the temperature of the box, and upstream of the thermal expansion valve |
| C) upright, controlled by a thermostat sensing the temperature of the box, and downstream of the thermal expansion valve |
| D) upright, controlled by a thermostat sensing evaporator superheat, and upstream of the thermal expansion valve |
