Domestic Hot Water Systems: Testing and Decommissioning

What is the main focus of Unit 206 in the learning material?

• Installation of domestic hot water systems

• Testing and decommissioning of domestic hot water systems

• Maintenance of domestic hot water systems

• Design of domestic hot water systems.

What should you check for open ends before soundness testing?

• Yes

• No

What is the first step in the testing and decommissioning process?

• Set up equipment

• Visual inspection

• Test period

• Final check

Fill in the blank: The step before 'Complete documentation' is ____.

• Visual inspection

• Set up equipment

• Test period

• Final check

In soundness testing, after filling the system with water, what should you do next?

• Leave for one hour

• Walk around system and check for leaks

• Attach the hydraulic test bucket

• Rectify and re-test if necessary.

What is the purpose of leaving the system to stand for 30 minutes during soundness testing?

• Pressure increase

• Temperature stabilisation

• Leak detection

• Water drainage

During soundness testing, the system should be pumped up to how many times the working pressure?

• 1.5 times

• 2 times

• 3 times

• 4 times

Fill in the blank: You do not want to damage the plastic pipe or _____ in Test A.

• Valves

• O rings

• Joints

• Fittings

In Test B, after how many minutes should you inspect the pressure loss?

• 10 minutes

• 30 minutes

• 60 minutes

• 120 minutes

What should be done after opening the kitchen tap?

• Add disinfectant

• Allow water to run until clear of debris/colour

• Close the tap

• Re-fill the system.