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WorksheetsHot Water 2
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What is the minimum size of hot water pipework from a small combination boiler in a domestic property?
a)
15mm
b)
50mm
c)
150mm
d)
25mm
2.
Which one of the following can be fitted to a hot water storage cylinder to provide protection against type 1 pitting corrosion?
a)
Sacrificial anode.
b)
Pressure reducing valve.
c)
Pressure relief valve
d)
Jam sandwich
3.
What type of hot water storage cylinder is shown
a)
Double feed indirect cylinder with coil
b)
Direct Cylinder
c)
Double feed indirect cylinder with annulus
d)
Combination cylinder
4.
A shower pump should normally be sat on
a)
anti-vibration mountings
b)
anti-slip mats.
c)
a timber floor directly
d)
a solid floor directly
5.
Which section of pipework is missing from a diagram of a hot water system?
a)
Primary open vent pipe
b)
Secondary open vent
c)
Primary cold feed
d)
Secondary cold feed pipe.
6.
A low pressure manual shower mixer valve must be supplied with
a)
cold water from the supply pipe and hot water from storage
b)
hot and cold water from storage
c)
hot and cold water from the supply pipe
d)
hot water from the supply pipe and cold water from storage
7.
Which one of the following should be informed before turning off the hot water supply to a rented house in order to carry out maintenance work?
a)
Landlord.
b)
Tenant.
c)
Water inspector
d)
Building control officer
8.
Which one of the following actions is part of the industry recognised procedure for the safe electrical isolation of a shower pump?
a)
Fix and test the fuse.
b)
Touch the bare wires with your tongue
c)
Turn the switch ‘on’ at the fused connection unit.
d)
Test the instrument on a known ‘live’ supply.
9.
Which one of the following details a part that may be replaced inside an electric immersion heater?
a)
Heater element
b)
Cartridge fuse.
c)
Thermostat.
d)
Miniature circuit breaker
10.
A replacement part number for a flow switch to a shower pump can be found from the
a)
pump manufacturer instructions
b)
local water company
c)
building control body
d)
local library
11.
While replacing a central heating pump, a plumber finds that the hot water cylinder is leaking. The matter should first be reported to
a)
local water company
b)
building control body
c)
the customer
d)
Tell Steve
12.
What is the name of the tool shown
a)
Immersion heater spanner.
b)
Water pump pliers
c)
Circlip pliers.
d)
Water pump pliers
13.
What is the name of the tool shown
a)
Immersion heater spanner
b)
Adjustable spanner
c)
Circlip pliers.
d)
Water pump pliers
14.
A replacement pump for a secondary hot water circuit is normally manufactured from
a)
low carbon steel
b)
copper
c)
bronze
d)
aluminium.
15.
What type of backflow protection device should be fitted to a mixer tap fed with cold water from a supply pipe that permits mixing of hot and cold water in the valve body?
a)
Pipe interrupter
b)
Anti-vacuum valve
c)
Double Check valve
d)
Single check valve
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