WorksheetsHeating Systems Quiz
Total questions: 37
Worksheet time: 19mins
What does the term 'gravity circulation' refer to in older systems?
Use of a pump to circulate heat
Principle of convection to circulate heat
Use of electricity to circulate heat
Principle of radiation to circulate heat
What is a characteristic of modern CH systems?
They rely solely on gravity circulation
They incorporate a circulator or pump
They use only manual heating methods
They are not used in any properties
What is a 'C Plan' system?
A system that uses only gravity circulation
A system that uses only pumped circulation
A system that combines gravity and pumped circulation
A system that does not circulate heat
What is a characteristic of the one-pipe semi-gravity system in plumbing?
It uses multiple ring pipes for installation.
It relies on gravity to heat radiators.
It is more expensive due to complex installation.
It ensures all radiators are equally warm.
What is the purpose of the feed and expansion cistern in a one-pipe semi-gravity system?
To store hot water for immediate use
To allow for expansion and contraction of water
To filter impurities from the water
To increase water pressure in the system
What is the diameter of the vent pipe in the one-pipe semi-gravity system?
15mm
22mm
28mm
35mm
What is the function of the time clock in the one-pipe semi-gravity system?
To regulate the temperature of the water
To control the timing of the heating system
To measure the water pressure
To monitor the water level in the cistern
What is one advantage of a one-pipe semi-gravity system?
High efficiency
Cheap to install
Compliant with Building Regulations
Controlled room temperature
Which of the following is a disadvantage of a one-pipe semi-gravity system?
Each radiator is progressively cooler than the previous
High installation cost
Compliant with Building Regulations part L
High efficiency boilers
Why might a one-pipe semi-gravity system not be compliant with Building Regulations part L?
It is too expensive
It has uncontrolled room temperature
It uses high efficiency boilers
It is too complex
What is a potential issue with the boilers connected to one-pipe semi-gravity systems?
They are high efficiency
They are low efficiency
They are too expensive
They are too large
What is the primary function of the open vent pipe in a one-pipe semi-gravity system?
To increase water pressure
To provide a safety outlet
To reduce water temperature
To block air flow
Why should the open vent not have any valves attached?
It could increase water flow
It could cause overheating
It could have disastrous effects if the valve was closed
It could improve system efficiency
What does the open vent allow when filling the system with water?
Water to escape
Air to escape
Heat to escape
Pressure to increase
What is the minimum diameter required for an open vent pipe in a one-pipe semi-gravity system?
15mm
22mm
30mm
50mm
What is one of the purposes of an open vent pipe in a plumbing system?
To increase water pressure
To ensure atmospheric pressure within the system
To reduce water temperature
To prevent water flow
How high should the open vent pipe rise above the water level of the feed & expansion (F&E) cistern?
200mm
300mm
450mm
600mm
What is the maximum distance allowed between the open vent and the cold feed in a one-pipe semi-gravity system?
100mm
150mm
200mm
250mm
What is the term used for the point where the circulating pump acts on both the feed pipe and the open vent pipe with equal suction?
Balance point
Neutral point
Equilibrium point
Central point
What happens if the open vent and cold feed are positioned further apart than the maximum allowed distance?
The neutral point becomes stronger
The pump acts on the open vent pipe with greater force
The neutral point becomes weak
The system stops working
What is the purpose of the cold feed and expansion pipe in a one-pipe semi-gravity system?
To allow filling of the system from the F&E cistern
To prevent water from reaching the F&E cistern
To cool down the system water
To block expansion in the system water
What does the cold feed and expansion pipe allow in the system water?
Expansion to reach the F&E cistern
Contraction to prevent overflow
Cooling to reduce temperature
Blocking to stop flow
What is the common capacity of a Feed and Expansion (F&E) cistern?
10 litres
18 litres
25 litres
30 litres
Where should the 15mm cold feed be located in relation to the F&E cistern?
On top of the F&E cistern
Below the F&E cistern
To the side of the F&E cistern
Inside the F&E cistern
What is the minimum height the F&E cistern should be located above the circulator?
0.5m
1m
1.5m
2m
What is one of the purposes of the F&E cistern in a one-pipe semi-gravity system?
To provide static head for the heating system
To increase water pressure
To reduce energy consumption
To filter impurities from water
How does the F&E cistern help maintain the system after slight water loss?
It filters the water
It keeps the system topped up
It increases the water temperature
It reduces water flow
What is another function of the F&E cistern besides providing static head and topping up the system?
To accommodate system expansion
To decrease system pressure
To enhance water quality
To reduce noise in the system
What type of circulation does the two-pipe semi-gravity system use for the hot water circuit?
Pumped circulation
Gravity circulation
Forced circulation
Mixed circulation
How is the heating circuit controlled in a two-pipe semi-gravity system?
By a room thermostat that switches off the pump
By a manual switch
By a timer
By a pressure valve
What is the main advantage of having separate pipes for flow and return in this system?
It reduces water pressure
It prevents water from mixing, allowing heat emitters to achieve the same temperature
It increases water flow speed
It reduces installation costs
What is the diameter of the cold feed pipe in a two-pipe semi-gravity system?
15mm
22mm
28mm
30mm
Which component controls the pump in a two-pipe semi-gravity system?
Boiler
Programmer
Room thermostat
Feed and expansion cistern
What is the diameter of the gravity primaries in a two-pipe semi-gravity system?
15mm
22mm
28mm
30mm
What is one advantage of a two-pipe semi-gravity system?
Uncontrolled heat
Boiler cycling
Cheaper to run
Low efficiency
Which of the following is a disadvantage of a two-pipe semi-gravity system?
All heat emitters reach the same temperature
Quicker when heating up
Not compliant to Building Regulations part L
Cheaper to run
Why might a two-pipe semi-gravity system be considered low efficiency?
All heat emitters reach the same temperature
Boilers connected to these systems are low efficiency
Quicker when heating up
Cheaper to run
