review questions chaper 26 hvac

In a commercial HVAC system, if the thermostat's switch controls a liquid line solenoid valve, which control usually cycles off the compressor?

A pneumatic control system uses ____ for device actuation.

• Total energy management

• pressurized air

• freezestat

• energy use intensity

In a forced-air system, zone controls prominently use ____ to regulate the temperatures of the different zones.

In a forced-air zoned system, what device operates to regulate airflow and compensate for when one of several zone dampers closes?

• Bypass damper

• direct digital control

• BACnet

• servers

When pressure from airflow is reduced, most barometric dampers close due to ____.

• servers

• adjustable weights

• checking overall airflow in the different zones

• Workstations

In a forced-air zoned system, a ____ opens when temperature right above the evaporator coil drops to around 33°F.

After speaking with the customer, begin a service call for troubleshooting a forced-air zoned system by ____.

____ is a conservation concept in which a building is viewed in terms of its total energy usage.

• energy use intensity

• Grievance management system

• Total energy management

• adjustable weights

Which of the following systems is not typically managed by a building automation system?

Dividing energy consumption in Btu by the square footage of a conditioned space shows the relationship of Btu consumed per year for a given area, which is called the ____.