RMGA Gas Appliance Installation and Service 3

Question 1

What is the purpose of a gas appliance's manual shutoff valve located within 6 feet of the appliance?

Accepted Answer

To provide a means for the user or technician to quickly shut off gas to the appliance for service or emergency

Answer

To regulate operating pressure for the appliance

Answer

To measure gas consumption of the individual appliance

Answer

To prevent reverse flow from the appliance to the piping system

Question 2

What is 'standby pilot consumption' and why is it relevant to gas appliance efficiency?

Accepted Answer

The continuous gas consumption of a standing pilot light that burns whether or not the appliance is in use

Answer

The gas used by the appliance when operating at full capacity

Answer

The gas used during the appliance's ignition sequence

Answer

The fuel consumed during the appliance's self-cleaning cycle

Question 3

What is the function of a pressure regulator built into a gas appliance (appliance regulator)?

Accepted Answer

To reduce the supply pressure to the specific pressure required by the appliance burner system

Answer

To boost low supply pressure for high-demand appliances

Answer

To shut off gas to the burner when the desired temperature is reached

Answer

To measure gas flow to the individual burner

Question 4

What does 'input rating' of a gas appliance mean?

Accepted Answer

The rate at which the appliance consumes gas, expressed in BTU per hour

Answer

The electrical power consumed by the appliance ignition system

Answer

The heating output delivered to the space or load

Answer

The gas pressure required at the appliance inlet

Question 5

What is the purpose of a vent damper on a gas appliance?

Accepted Answer

To close the flue when the appliance is not firing, reducing standby heat loss up the chimney

Answer

To increase flue draft during appliance operation

Answer

To prevent combustion air from entering the appliance in reverse

Answer

To regulate combustion air flow to the burner

Question 6

What type of flexible gas appliance connector is prohibited for use with a gas clothes dryer?

Accepted Answer

Listed polymer (plastic) connector

Answer

Stainless steel corrugated metal connector

Answer

Uncoated brass connector

Answer

Listed aluminum flexible connector