PC Fixture & Appliance Installation Flashcards
6 cards from real PC practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 PC Fixture & Appliance Installation flashcards as text
When setting a toilet flange, at what height relative to the finished floor should the top of the flange be positioned?
Answer: Flush with or up to 1/4 inch above the finished floor
The toilet flange should be set flush with or up to 1/4 inch above the finished floor to ensure a proper wax ring seal and prevent rocking.
What type of supply connection is required between a gas water heater and the gas supply line to allow for vibration and movement?
Answer: CSST flexible gas connector
A CSST (corrugated stainless steel tubing) flexible gas connector is used for the final connection to a water heater to allow for movement and vibration without stressing the connection.
When installing a pedestal sink, what must be done to properly support its weight?
Answer: Anchor the basin to a wall-mounted blocking or carrier
Pedestal sinks must be anchored to wall-mounted blocking or a carrier installed in the wall during rough-in to bear the weight of the basin and user.
What is the purpose of the pressure-temperature (P&T) relief valve on a water heater?
Answer: To prevent the tank from over-pressurizing or overheating to dangerous levels
The P&T relief valve automatically opens to release water if the tank pressure exceeds 150 psi or temperature exceeds 210°F, preventing explosion.
When connecting a dishwasher drain hose, what installation technique prevents wastewater from siphoning back into the dishwasher?
Answer: Creating a high loop or installing an air gap at the counter
A high loop or air gap prevents backflow by keeping the drain hose elevated above the flood level rim, preventing siphoning of dirty water into the dishwasher.
What is the standard rough-in height for a wall-hung lavatory supply stop valve from the finished floor?
Answer: 21 inches
Supply stops for wall-hung lavatories are typically rough-in at 21 inches above the finished floor to align with standard lavatory supply connections.