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WorksheetsFeed and Expansion (F&E) Cistern Quiz
Total questions: 63
Worksheet time: 32mins
What is the main purpose of the Feed and Expansion (F&E) cistern in an open vented system?
To store cold water for household use
To allow the heated water in the system to expand and to operate at atmospheric pressure
To filter impurities from the water
To heat the water in the system
Where is the Feed and Expansion (F&E) cistern commonly located in an open vented system?
In the basement
In the kitchen
In the loft
In the garden
At what level should the base of the Feed and Expansion (F&E) cistern be placed?
Above the cold water storage cistern
Below the cold water storage cistern
At the same level as the cold water storage cistern
At ground level
What is the function of the Feed and Expansion (F&E) cistern in an open vented system?
To fill the system up with water
To drain the system
To cool the water in the system
To circulate the water in the system
What is the common capacity of the Feed and Expansion (F&E) cistern?
10 litres
18 litres
22 litres
15 litres
Where is the 15mm cold feed located in relation to the F&E cistern?
Above the F&E
Below the F&E
To the side of the F&E
Inside the F&E
What is the minimum height the 22mm open vent from the primaries must rise above the water level?
300mm
450mm
500mm
600mm
How far above the circulator should the F&E be located?
0.5 metres
1 metre
1.5 metres
2 metres
What does the rising main supply in the F&E system?
BS 1212 FOV
Cold feed exit
Service valve
Expansion tank
Why must there be a service valve installed prior to the FOV?
To allow for maintenance
To increase water pressure
To reduce water temperature
To prevent water leakage
At what level should the water set by the FOV in the cistern be?
High level
Medium level
Low level
Overflow level
What percentage does the system water expand by when heated?
2%
4%
6%
8%
What is the primary function of the open vent pipe?
To increase the water pressure
To provide a safety outlet and allow the system to operate at atmospheric pressure
To reduce the temperature of the system
To filter the water in the system
Why should the open vent not have any valves attached?
It would increase the water flow
It could have disastrous effects if the valve was closed and the cold feed became blocked
It would decrease the system's efficiency
It would cause the system to overheat
What is the minimum height the vent needs to be above the water level?
300mm
350mm
450mm
500mm
What is the minimum pipe size for the open vent pipe?
18mm
20mm
22mm
24mm
What is the primary function of an air separator in a piping system?
To heat the water
To cool the water
To separate the air from the water
To filter impurities from the water
What allows close proximity or close coupled pipework when positioning the cold feed and vent pipe?
A water pump
An air separator
A heat exchanger
A pressure valve
What is the basic structure of an air separator?
A small pipe with a heating element
An oversized pipe with a cold feed and vent pipe connections
A narrow pipe with multiple filters
A large tank with a cooling system
What happens to the water inside the air separator?
It gets heated
It gets cooled
It swirls around, separating the air
It gets filtered
What is one of the benefits of the correct layout of pipework and removal of air from the system?
Increases the noise in the system
Reduces the noise in the system
Increases the risk of corrosion
Increases the temperature of the system
What does the removal of air from the system help to lower?
The temperature of the system
The pressure in the system
The risk of corrosion
The flow rate of the system
What is the function of an air separator in a pipework system?
To increase the temperature of the system
To ensure correct coupling of the cold feed and vent pipes
To increase the noise in the system
To decrease the flow rate in the system
What is commonly used instead of an air separator in the configuration described?
T frame
H frame
L frame
X frame
Where should the vent and the cold feed be installed in relation to the boiler?
On the return side of the circulator
On the flow from the boiler, on the suction side of the circulator
On the flow from the boiler, on the discharge side of the circulator
On the return side of the boiler, on the suction side of the circulator
What is the maximum distance allowed between the vent and the cold feed?
100mm
150mm
200mm
250mm
What is the purpose of ensuring that the circulator always draws on the cold feed?
To increase the temperature of the water
To ensure proper circulation
To prevent air from entering the system
To reduce the pressure in the system
What ensures the neutral point of the system is at the base of the cold feed in an air separator and H frame?
The correct layout of pipework
The type of pump used
The temperature of the water
The size of the boiler
What is the primary purpose of positioning the pump correctly in a circulator system?
To reduce the system's temperature
To produce positive pressure and avoid air entering the system
To increase the system's noise
To decrease the system's efficiency
According to the golden rule, where must the circulator always draw from?
The hot feed
The cold feed
The middle feed
The return feed
Why is it important to set the speed settings of the circulator correctly?
To allow the system to cool down efficiently
To allow the system to heat up efficiently without any system noise
To increase the system's noise
To decrease the system's pressure
Where is the circulator located in a heating system?
By the radiators
By the pump flanges
By the boiler
By the thermostat
What materials are used for washers to maintain the watertight seal in a circulator?
Metal or plastic
Rubber or fibre
Wood or metal
Plastic or fibre
What can be done to remove the pump without draining the system?
Turn off the boiler
Close the full bore valves at either side of the flanges
Disconnect the radiators
Open the pressure release valve
What could be the reason if the radiators are not heating up and the hot water is only lukewarm?
A faulty thermostat
A sluggish or poor performing pump
A broken radiator
Low water pressure
What is the function of the isolation valves integral to the flanges on either side of the pump?
To increase the pressure of the pump
To allow easy maintenance
To reduce the noise of the pump
To control the temperature of the pump
Why is the position of the circulator important in a system that requires positive pressure?
To ensure the system operates under negative pressure
To maintain the correct relation to the cold feed and vent pipe
To reduce the temperature of the system
To increase the flow rate of the system
What happens when the system is under negative pressure?
Pumping over the vent pipe
Pushing into the cistern
Correct arrangement showing the position of the vent and feed behind the pump
Increasing the temperature of the system
What is the correct arrangement for a system under positive pressure?
Pumping over the vent pipe
Pushing into the cistern
Position of the vent and feed behind the pump
Increasing the temperature of the system
What is another name for a two port motorised valve?
Zone valve
Pressure valve
Flow valve
Temperature valve
What does a zone valve allow to be controlled separately?
Cold water and the cooling circuits
Hot water and the heating circuits
Air flow and the ventilation circuits
Electrical current and the power circuits
What happens when there is a call for heat in a system with a zone valve?
The zone valve closes
The zone valve opens
The thermostat shuts down
The boiler stops working
What occurs when the thermostat reaches the set temperature in a system with a zone valve?
The zone valve opens
The zone valve closes
The boiler starts heating
The water flow increases
What does the three port mid-position valve control?
The flow of water to both the heating and hot water circuits
The flow of air to both the heating and cooling circuits
The flow of gas to both the heating and cooling circuits
The flow of electricity to both the heating and cooling circuits
Which of the following is NOT a label for the three ports of the three port mid-position valve?
AB
A
B
C
What does the port labeled 'A' control in the three port mid-position valve?
Flow for the boiler
Central heating
Hot water
Cold water
What does the port labeled 'B' control in the three port mid-position valve?
Flow for the boiler
Central heating
Hot water
Cold water
What does the port labeled 'AB' control in the three port mid-position valve?
Flow for the boiler
Central heating
Hot water
Cold water
What is the function of a three port mid-position valve in a heating system?
To allow water to circulate around both heating and hot water circuits
To shut off water flow completely
To only allow water to circulate around the heating circuit
To only allow water to circulate around the hot water circuit
In the heating only position, which port is shut off in a three port mid-position valve?
Port A
Port B
Port AB
None of the ports
In the central heating only position, which port is shut off in a three port mid-position valve?
Port A
Port B
Port AB
None of the ports
Where is the cylinder thermostat typically situated on a hot water cylinder?
At the bottom of the cylinder
One-third of the way up the cylinder
At the top of the cylinder
In the middle of the cylinder
What is the primary function of the cylinder thermostat?
To control the water pressure
To govern the temperature of the hot water
To regulate the flow of water
To measure the water level
To what is the cylinder thermostat linked?
The main water supply
The heating element
The zone valve or three port valve
The water pump
What types of cylinder thermostats are mentioned in the text?
Digital and analog
Bi-metallic strip, volatile liquid, or gas type
Mechanical and electronic
Single-phase and three-phase
What is the common maximum temperature setting for a cylinder thermostat?
40°C
50°C
60°C
70°C
Where should a room thermostat be situated?
1.5 metres up a wall and approximately 3 metres away from a heat source
1 metre up a wall and approximately 2 metres away from a heat source
2 metres up a wall and approximately 1 metre away from a heat source
3 metres up a wall and approximately 1.5 metres away from a heat source
What type of room thermostat is more commonly fitted nowadays?
Basic bi-metallic type
Programmable, Wi-Fi, app-activated and digital type
Compensating room thermostat
Manual thermostat
Which of the following is NOT a type of room thermostat mentioned in the text?
Basic bi-metallic type
Programmable type
Digital type
Solar-powered type
Where is the boiler thermostat located?
On the heat exchanger
On the hot water cylinder
On the boiler
On the heat emitters
What does the boiler thermostat govern?
The temperature of the heat exchanger
The temperature of the primary water
The temperature of the heat emitters
The temperature of the return pipe
What is heated by the primary water controlled by the boiler thermostat?
The heat emitters only
The return pipe only
The heat exchanger and heat emitters
The phial attached to the boiler
What is commonly attached to the return pipe of the boiler?
A heat exchanger
A hot water cylinder
A phial
A heat emitter
