Hot water revision Levevl 2

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Across
  1. 3. the length insulation is required to be on a hot water cylinder
  2. 7. tool used to take flow rates
  3. 9. the name given to the layers of hot water in the hot water cylinder
  4. 12. a renewable source that produces hot water using compressed wood pellets
  5. 14. What is the primary function of the open vent on a domestic hot water system?
  6. 16. name for cheaper priced electricity during the night time
  7. 17. another method of heating hot water directly in a cylinder
  8. 20. Picture 1
  9. 21. a renewebale enery source that produces electricity or hot water
  10. 26. what type of pump should be used on secondary circulation
  11. 28. component that takes the expanded water on a unvented system
  12. 30. To prevent electrolytic corrosion taking place in a system, where can the magnesium rod be placed?
  13. 32. To overcome a dead leg for a hot water draw-off point, what could be installed?
  14. 33. component that protects against category 2 water
  15. 35. A customer has intermittent flow of hot water from their bath tap – what is the most likely cause of the problem?
  16. 36. what does secondary return prevent?
  17. 37. Picture 2 type of localised hot water heater
  18. 38. another term for a water jacket tube heater
Down
  1. 1. Picture 3 Type of hot water cylinder
  2. 2. A rigid pipework hot water system has a working pressure of 4bar. At what pressure should the pipework be tested for soundness?
  3. 4. picture 6
  4. 5. type of boiler that is mains fed and supply’s hot water instantaneously
  5. 6. picture 9
  6. 8. A 450mm off set on the hot water draw-off point on a cylinder prevents what?
  7. 10. Which hot water component should be fixed using flexible connections for a shower
  8. 11. Under Building Regulations part G, what is a new or replacement immersion heater thermostat required to have?
  9. 13. Building regulation that deals with hot water safety
  10. 15. component that the pressure and temperature relief valves discharges into
  11. 18. Building regulation that deals with energy efficiency
  12. 19. what type of heat exchanger does a double feed indirect cylinder contain?
  13. 22. picture 4 Type of hot water cylinder
  14. 23. component that protects against category 3 water
  15. 24. Which of the following appliances is most likely to offer the customer low pressure at a hot water outlet?
  16. 25. If hard water is allowed to be heated above 65 degrees centigrade, what could be the consequence in the system?
  17. 27. what does image 8 measure?
  18. 29. picture 7
  19. 31. all boilers that are installed are required to be what?
  20. 34. picture 5 Type of hot water cylinder