PC PC Fixture & Appliance Installation 2

Question 1

What is the proper order of operations when installing a new bathtub?

Accepted Answer

Set tub, install surround, connect drain, connect supply

Answer

The tub must be set first to allow the surround to overlap its flange, then the drain connected, and finally supply lines connected after the surround is in place.

Question 2

When installing a tankless water heater, what is a critical venting requirement that differs from a standard tank water heater?

Accepted Answer

Tankless heaters require dedicated sealed combustion air and direct vent systems

Answer

Most tankless water heaters require a dedicated sealed combustion air intake and direct exhaust vent to handle the high BTU condensing or non-condensing combustion.

Question 3

A plumber is installing a floor-mounted water closet. What is used to create a watertight seal between the toilet horn and the floor flange?

Accepted Answer

Wax ring or wax-free gasket

Answer

A wax ring or wax-free gasket seals the joint between the toilet horn and the floor flange, preventing sewer gas and wastewater from leaking at the base.

Question 4

When installing a kitchen faucet, what is the purpose of applying plumber's putty under the faucet base?

Accepted Answer

To create a watertight seal between the faucet base and the sink deck

Answer

Plumber's putty under the faucet base creates a soft, water-tight seal that prevents water from seeping beneath the faucet onto the cabinet below.

Question 5

What is the minimum required clearance from the center of a water closet to a side wall or obstruction per the IPC?

Accepted Answer

15 inches

Answer

The IPC requires a minimum of 15 inches from the centerline of a water closet to any side wall or obstruction to allow adequate user space.

(PC) Plumber Certification Practice Test

(PC) Plumber Certification Practice Test

PC PC Fixture & Appliance Installation 2