Principles of Automatic Heating Controls

Which of the following is a type of heating equipment?

• Heat pumps

• Air conditioners

• Dehumidifiers

• Fans

Which of the following is a fossil fuel used in heating equipment?

• Propane

• Wind

• Solar

• Geothermal

What type of equipment uses energy indirectly for heat removal?

• Heating equipment

• Cooling equipment

• Lighting equipment

• Cooking equipment

What is a common feature of air conditioners and chillers?

• They both generate heat

• They both use energy indirectly

• They both use solar power

• They both store energy

Which component in a natural draft furnace is used to detect temperature changes in the burner?

• Gas valve

• Thermocouple

• Air filter

• Fan

Which of the following best describes the flow of flue gases in a natural draft furnace?

• Forced by fans

• Driven by convection currents

• Pumped by motors

• Static and unmoving

What is the significance of closed loop control in maintaining furnace efficiency?

• It increases heat loss

• It ensures the system operates at the desired conditions

• It measures temperature

• It controls the fuel type

When there is a call for cooling, is the F1 contact open or closed?

• Open

• Closed

What thermostat terminal indirectly makes contact F2 Open?

• Terminal R

• Terminal W

• Terminal C

• Terminal G

In the position shown, what voltage should you measure across the F1 contact if everything is working properly?

• 120 VAC

• 24 VAC

• 32 mV

• 17 mV