Plumbing level 2 - PP1- Central Heating

What should be done before starting soundness testing?

• Attach the hydraulic test bucket

• Check for leaks

• Walk around the system to make sure all joints have been made

• Fill the system with water

What is the first step in soundness testing for rigid pipes?

• Slowly fill the system with water

• Leave for one hour

• Check for any pressure drop

• Pump system up to 1.5 times the working pressure

For plastic pipes, what is the initial pressure to which the system should be pumped?

• 3 bar

• 1.5 times working pressure

• 1 bar

• 2 bar

How long should the system be left to stand for temperature stabilization in rigid pipe testing?

• 45 minutes

• 30 minutes

• 1 hour

• 15 minutes

What should be done after filling the system with water in plastic pipe testing?

• Check for leaks

• Attach the hydraulic test bucket

• Increase pressure to 1.5 times working pressure

• Reduce pressure to one-third

What is added to the system for disinfecting according to BS6700?

• Detergent

• Antifreeze

• Hydraulic fluid

• Sodium hypochlorite solution or chlorine

What should be done after adding disinfectant to the system?

• Leave for 15 minutes

• Leave for 1 hour

• Leave for 30 minutes

• Leave for 45 minutes

What is the first step in decommissioning a hot water system?

• Remove fuses

• Inform the customer

• Drain the system

• Cap open ends

What should be done after isolating the heat source in decommissioning?

• Drain the system

• Remove fuses

• Place a warning notice on the heat source

• Cap open ends

What is a common item that may need periodic maintenance or replacement?

• Hot water cylinder

• Kitchen sink

• Electrical wiring

• Gas meter