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Worksheetspp3 Central Heating Systems Quiz
Total questions: 10
Worksheet time: 5mins
What is the advantage of a C plan two-pipe semi-gravity central heating system?
Not compliant with Building Regulations L1b
Limited control on heating and hot water
Lower efficiency
Quicker heat-up time and compliant to building regulations L1B
What is the purpose of a heat sink in a two-pipe semi-gravity central heating system?
To increase the efficiency of the boiler
To regulate the air pressure in the system
To control the flow and return temperature
To dissipate heat without overheating the boiler
What type of system uses a pump to circulate heated water around the hot water and heating circuits?
C plan two-pipe semi-gravity
Two-pipe semi-gravity with heat sink
Pumped central heating only
Fully pumped systems
What is the purpose of an automatic bypass valve in a fully pumped mid-position valve system?
To prevent lock out and prolong circulator life
To control the flow of water to the hot water cylinder
To increase the system pressure when circuits close down
To isolate the flow of water
Which type of system uses one zone valve to control the hot water and a second zone valve to control the heating circuit?
Fully pumped two two-port valves – S plan system
Fully pumped mid-position valve – Y plan system
Pumped central heating only
Two-pipe semi-gravity with heat sink
What is the purpose of locking out in a boiler?
To increase the efficiency of the boiler
To regulate the air pressure in the system
To protect the boiler from overheating
To control the flow and return temperature
What is the cause of corrosion within a central heating system?
Aeration
Overheating
Low system pressure
Excessive water flow
What is the purpose of a sealed expansion vessel in a sealed heating system?
To isolate the flow of water
To prevent lock out and prolong circulator life
To control the flow of water to the hot water cylinder
To accommodate the increase in volume as the water heats up
What is the purpose of a pressure relief valve in a sealed heating system?
To discharge pressure to a safe location if required
To isolate the flow of water
To prevent lock out and prolong circulator life
To control the flow of water to the hot water cylinder
What is the purpose of a Schrader-type pressure valve in a sealed heating system?
For checking and topping up the air charge in the expansion vessel
To control the flow of water to the hot water cylinder
To prevent lock out and prolong circulator life
To isolate the flow of water
