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MTL2 Hot Water Mock

Total questions: 50

Worksheet time: 26mins

Name
Class
Date
1.

The maximum depth a joist can be notched is?

a)
1/8
b)

1/4

c)

1/6

d)

1/3

2.

To cater for pipework expansion the best material for clips to be made of is?

a)

Copper

b)

Plastic

3.

How can we prevent noise in systems?

a)

Sufficient clipping

b)

Drill wide enough holes for pipework in joists

c)

Install a silencer

d)

Use smaller pipe work

4.

The capacity of a feed and expansion cistern in liters is?

a)
15
b)

16

c)

17

d)

18

5.

How would you isolate a feed and expansion cistern?

a)

Isolate service valve to the float valve

b)

Tie up the Float valve

c)

Do it Live

d)

Cap of vent pipe

6.

How can maintenance be done on an indirect hot water system if there is no isolation valve on the supply pipework?

a)

Turn off the main stop tap

b)

Use a pipe freezing kit

c)

Do it live

d)

Whilst the system is on

7.

What is the minimum size the vent pipe can be?

a)

15mm

b)

28mm

c)

22mm

8.

What is the minimum size the cold feed pipework from the cistern to the cylinder can be?

(a)  

9.

What is the name of the air gap on a wash hand basin?

a)

AUK 3

b)

AUK 1

c)

Air Gap

d)

AUK 2

10.

Which backflow protection device protects cold water from being contaminated with hot water (fluid category 1 and 2)?

a)

Single Check

b)

Double

c)

RPZ

d)

Service valve

11.

How can you see if pipework has limescale?

a)

The diameter of the pipe is reduced

b)

Poor flow rate

c)

Taste it

d)

Magnet

12.

Minimum Length of hot water draw off to the vent pipe in mm .

a)
450
b)

400

c)

750

d)

1350

13.

What do you call it when a tap sits about the spill over level?

a)

Close call

b)

Air Space

c)

Air Gap

d)

Backflow

14.

Where does the water come from on an instantaneous shower?

a)

Gravity

b)

Mains supply

c)

Cylinder

d)

Rainwater

15.

What is installed to prevent dead legs?

a)

Single check valve

b)

Double Check valve

c)

Anti syphon trap

d)

Secondary Circulation / Bronze pump

16.

What are the Small cisterns (FE) called?

a)

Grammer

b)

Secondary

c)

Primary

d)

Infant

17.

What are the Large cisterns (CWSC) called?

a)

Grammer

b)

Secondary

c)

Primary

d)

Infant

18.

When decommissioning what should you do?

a)

Turn the water supply off without informing the customer

b)

Turn the water supply off and put up a warning sign to prevent people turning it back on.

c)

Ring your supervisor,

d)

Do it quickly no need for a sign

19.

Which cylinder uses an air bubble to separate the primary and secondary water?P

a)

Direct

b)

Indirect

c)

Unvented

d)

Primatic

20.

What type of pump is used on secondary circulation?

a)

Hot water Pump

b)

Red Pump

c)

Bronze pump

d)

Blue Pump

21.

Where are pipes insulated?

a)

Under the floor

b)

In the attic

c)

1 meter away from the cylinder

22.

What is the size of a 1050mm x 450mm hot water cylinder?

a)

130 Liters

b)

145 Liters

c)

120 Liters

d)

90 Liters

23.

What must you do before starting the commissioning process?

a)

Visual inspection

b)

Open all service valves

c)

Turn on all taps

d)

Tidy your van

24.

What is the source of hot water on a gravity fed system?

a)

Unvented hot water

b)

Combination boiler

c)

Multipoint

d)

Cylinder

25.

What must be completed during the commissioning process?

a)
Benchmark
b)

Manufacture instructions

c)

Invoice

d)

Quote

26.

Part 2 float operated valves conform to what British standard?

a)
BS1212
b)

BS1234

c)

BS1313

d)

BS1111

27.

The Installation of hot water (TEMPERATURE) is regulated by what BS

a)

Part A

b)

Part C

c)

Part G

d)

Part L

28.

The Installation of hot water (EFFICIENCY) is regulated by what BS

a)

Part A

b)

Part C

c)

Part G

d)

Part L

29.

Name the System?

a)

Fully pumped Direct

b)

Gravity Hot Direct

c)

Fully pumped Indirect

d)

Gravity Indirect

30.

Name the System?

a)

Single Feed pumped Indirect

b)

Double feed pumped Direct

c)

Single feed gravity Indirect

d)

Double feed gravity Indirect

31.

Name the cylinder?

a)

Primatic single feed

b)

Primatic double feed

c)

Indirect

d)

Unvented

32.

Name the cylinder?

a)

Unvented

b)

Thermal store

c)

Indirect

d)

Primatic

33.

What size Hot and Cold pipe work is required at a combination boiler?

a)

22mm

b)

15mm

34.

What is this system that help with active dead legs?

a)

Hot water return

b)

Secondary flow

c)

Secondary return

d)

Fully pumped hot water

35.

What is this?

a)

Bronze Pump

b)

Single impeller shower pump

c)

Double impeller shower pump

d)

Positive head shower pump

36.

Name the cylinder that in normally install in Flats?

a)

Direct

b)

Combination unit

c)

Indirect

d)

Unvented

37.

Name the component?

a)

TMV

b)

TMR

c)

TRV

d)

TRM

38.

What temperature should be set at a bath according to Part G

a)

43 degrees

b)

48 degrees

c)

51 degrees

d)

60 degrees

39.

What height should a cylinder stat be install on a cylinder?

a)

1/4 down from the top

b)

1/4 up form the bottom

c)

1/3 down from the top

d)

1/3 up from the bottom

40.

What height should a Essex flange be install on a cylinder?

a)

1/4 down from the top

b)

1/4 up form the bottom

c)

1/3 down from the top

d)

1/3 up from the bottom

41.

Name the component?

a)

Surrey Flange

b)

Essex Flange

c)

Tap connector

d)

Service valve

42.

What would you install to prevent corrosion of a hot water cylinder?

a)

Brass sacrificial anode

b)

Zinc sacrificial anode

c)

Magnesium sacrificial anode

43.

What shower pump is installed in this drawing

a)

Twin Impeller

b)

Single Impeller

44.

Name the component?

a)

Cylinder stat

b)

Immersion heater

c)

Immersion heater thermostat

45.

Name the component?

a)

Full way gate valve

b)

Service vlave

c)

DOV

d)

Check valve

46.

Name the component?

a)

Single check valve

b)

Double check valve

c)

Service valve

d)

Gate valve

47.

Name the part in the DOV

a)

Stopper

b)

Washer

c)

Sealer

48.

Name the cylinder?

a)

Direct

b)

Indirect

c)

Unvented

d)

Primatic

49.

Name the cylinder?

a)

Direct

b)

Indirect

c)

Unvented

d)

Primatic

50.

Name the cylinder?

a)

Direct

b)

Indirect

c)

Unvented

d)

Primatic

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