Mock Test 12
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Question 1 of 40
1. Question
1. The Water Supply (water fittings) Regulations 1999 lay down:
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Question 2 of 40
2. Question
2. A rigid pipework hot water system has a working pressure of 4bar. At what pressure should the pipework be tested for soundness?
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Question 3 of 40
3. Question
3. Guidance on the installation procedures for domestic hot water systems can be found in :
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Question 4 of 40
4. Question
4. Which of the following appliances is most likely to offer the customer low pressure at a hot water outlet?
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Question 5 of 40
5. Question
5. If hard water is allowed to be heated above 65 oC what could be the consequence in the system?
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Question 6 of 40
6. Question
6. A customer has intermittent flow of hot water from their bath tap – what is the most likely cause of the problem?
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Question 7 of 40
7. Question
7. To overcome a dead leg for a hot water draw-off point, what course of action could be taken?
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Question 8 of 40
8. Question
8. Which one of the following heat sources is regarded as a renewable source of energy?
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Question 9 of 40
9. Question
9. Under Building Regulations Part G, what is a new or replacement immersion heater required to have?
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Question 10 of 40
10. Question
10. The connection for a secondary circulation system return should be made at what point in the hot water cylinder?
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Question 11 of 40
11. Question
11. If a flow switch on a pumped shower does not work, what would be the result?
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Question 12 of 40
12. Question
12. With reference to hot water system pipework components, a service valve can be fitted to a :
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Question 13 of 40
13. Question
13. With reference to domestic hot water systems, secondary circulation pipework is installed :
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Question 14 of 40
14. Question
14. Guidance on the installation procedures for domestic hot water systems can be found in :
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Question 15 of 40
15. Question
15. Which of the following appliances is most likely to offer the customer low pressure at a hot water outlet?
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Question 16 of 40
16. Question
16. If hard water is allowed to be heated above 650 oC, what could be the consequence in the system?
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Question 17 of 40
17. Question
17. What is used at a basin outlet to prevent contamination of the water system?
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Question 18 of 40
18. Question
18. What is the primary function of the open vent on a domestic hot water system?
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Question 19 of 40
19. Question
19. Under Building Regulations Part G, what is a new or replacement immersion heater required to have?
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Question 20 of 40
20. Question
20. The connection for a secondary circulation system return should be made at what point in the hot water cylinder?
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Question 21 of 40
21. Question
21. If a flow switch on a pumped shower does not work, what would be the result?
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Question 22 of 40
22. Question
22. Which statement refers to a instantaneous system ?
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Question 23 of 40
23. Question
23. In a feed and expansion cistern what is the minimum distance that has to be left from the water level to the warning/overflow pipe ?
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Question 24 of 40
24. Question
24. The vent/distribution pipe from the top of the cylinder is not allowed to be attached vertically. What is this to prevent ?
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Question 25 of 40
25. Question
25. Where would you find the cylinder thermostat on a cylinder ?
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Question 26 of 40
26. Question
26. What is the horizontal distance from the top of the hot water cylinder before the vent pipe goes vertically to the cistern ?
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Question 27 of 40
27. Question
27. In a feed and expansion cistern you need to allow for expansion of the total capacity of the system. How much % do you need to allow for ?
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Question 28 of 40
28. Question
28. When secondary return pipes are used what other component should be used to move the water around the system ?
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Question 29 of 40
29. Question
29. With respect to direct hot water systems, the heat exchanger should be made from what ?
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Question 30 of 40
30. Question
30. Which of the following should be done if a cylinder you are going to install does not have insulation ?
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Question 31 of 40
31. Question
31. On what type of system is it permissible to use a cast iron heat exchanger ?
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Question 32 of 40
32. Question
32. Which of the following is an advantage of an open vented system ?
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Question 33 of 40
33. Question
33. A thermostat on a unvented cylinder should only allow a maximum temperature of what ?
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Question 34 of 40
34. Question
34. Which of the following is an disadvantage of an open vented system ?
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Question 35 of 40
35. Question
35. What would happen if the membrane in an expansion vessel failed ?
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Question 36 of 40
36. Question
36. Which connection for a shower is made to the top of the cylinder which replaces the standard M.I?
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Question 37 of 40
37. Question
37. Cylinder collapse could occur when 2 pipes are blocked and the water is drawn off or cooled down. Which pipes would be blocked for this to occur ?
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Question 38 of 40
38. Question
38. How high should the open vent be above the water level on the cold water storage cistern If the system has a head height of 15.5m ?
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Question 39 of 40
39. Question
39. A fuel burning appliance used to heat up stored hot water is known as what ?
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Question 40 of 40
40. Question
40. What is the maximum length of the discharge pipework on a unvented cylinder ?
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