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WorksheetsCentral Heating 6035-02 | Part 1
Total questions: 40
Worksheet time: 21mins
What British standard covers the design of water based heating systems?
BS 8000
BS EN 12828
BS 4422
BS EN 14336
What does "CHeSS" stand for?
Central Heating Efficiency System Specification
Controlling Heating effectively Standard Society
Central Heating Economically Sites Specification
Control of Heating Effectively Solar Saving
Which of the following is not a type of towel rail design?
Inverted
Conventional tubular
Designer
One-pipe
BS 1192 recognises the symbol shown here as?
Drain off valve
Double check valve
Automatic air vent
Radiator valve
The neutral point of the system is at the base of the cold feed, where it joins the system, which sequence is correct?
Vent pipe-> Cold feed -> Pump
Pump -> Cold feed -> Vent pipe
Vent pipe -> Pump -> Cold feed
Cold feed -> Pump -> Vent pipe
Which of the following is used with medium low carbon steel pipes?
Steam and fire systems
Heating and oil lines
Gas
What does the 'C plan plus two pipe semi gravity system' have additionally to that of a 'C plan two pipe semi gravity system'?
A room thermostat is installed on the system
Thermostatic radiator valves are installed
Additional zone controls on the system for heating
All of the above
Which of the following are methods of maintaining the circulator pump flanges watertight seal? (Choose 2)
Rubber washer
Fibre washer
PTFE
Hemp and paste
What type of system is shown here?
Two pipe semi gravity with heat sink
C plan plus two pipe semi gravity
One pipe gravity system
Oil fueled semi gravity two pipe system
Which of the following activates the central heating?
Cylinder thermostat
Room thermostat
Programmer
Boiler thermostat
What is produced in the form of 'black sludge' when iron oxidation occurs?
Electrolysis
Carbonates
Magnetite
Peroxide
What type of heat transfer does the gravity or semi gravity systems use to circulate the water around the pipework?
Radiation
Conduction
Convection
Solar thermal
Which of the following is a back boiler?
Which radiator would be the "coldest" in a one pipe gravity system?
1st radiator in the system
2nd radiator in the system
3rd radiator in the system
Last radiator in the system
The most efficient way of pipework connetion to a radiator is by which method?
TBSE : Top-Bottom-Same Ends
BBOE : Bottom-Bottom-Opposite Ends
TTOE : Top-Top-Opposite Ends
TBOE : Top -Bottom-Opposite Ends
Which Building regulations require TRVs to be fitted on central heating systems?
Part L
Part K
Part C
Part P
How many radiators in a circuit must not be installed with a TRV?
One
Two
Three
All
Identify the Electric mains freezing kit.
Which of the following is linked to the cylinder thermostat? (Choose 2)
Surrey flange
Two-port zone valve
Three-port zone valve
Circulator pump
Which of the following is installed under kitchen units or vanity units, blowing warm air into the room?
Panel radiator
Fan convector
Skirting convector
Kickspace heater
Building regulations cover conservation of fuel and power in existing buildings, other than dwellings in which section of part L?
Part L1a
Part L1b
Part L2a
Part L2b
To allow the system to be filled under mains pressure, what is installed?
Cold water storage cistern
Filling loop
Feed & expansion cistern
All of the above
STATEMENT: The feed & expansion cistern operates at atmospheric pressure.
True
False
What is the primary function of the open vent pipe?
Provide safety outlet incase of overheating
Remove the debris in the system
Slowly filter out any limescale
All of the above
What type of fuel source would be stored in the image here?
Oil
Natural gas
Bio fuel
Solid fuel
Which of the following is the thermostatic radiator valve?
When there is a call for heat a hot tap is opened on a combination boiler, the valve does not need to activate as the system water can flow to the cylinder coil or plate heat exchanger. What is the name of the valve?
Service valve
Two port motorised valve
Three port diverter valve
Three port motorised valve
The colour of heavy graded low carbon steel is labelled as?
Brown
Blue
Red
Yellow
What is the component shown here?
3-port motorised valve
2-port motorised valve
Electrical-lever service valve
Electrical scale inhibitor
The component defined as: Fitted at high points or inside boilers releasing air automatically from the system, is known as?
Automatic bypass valve
Thermostatic radiator valve head
Automatic air release valve
Circulator
STATEMENT: The S-plan system does not need to be fitted with an automatic bypass due to the hot water and central heating working on separate zone valves.
True
False
What type of boiler would be associated with a heat sink?
Oil boilers
Gas boilers
Solid fuel boilers
Electrical boilers
The comfort temperature for full and selective central heating systems must be reached even at what outside temperature?
0°C
5°C
-1°C
1°C
The British standard covers float operated valves?
BS6700
BS1212
BS8000
BS4488
What is the magnetic system cleaner used for?
Collects the limescale from the system
Collects the magnetite from the system
Disinfects the system of any bacteria
Adds anode flakes into the system to prevent electrolytic corrosion
The image shown here is for what purpose?
Changing the radiator heads over
Lock shield valve for the engineers usage
To protect elderly people from adjusting the temperature
Decorator cap for when decorating
Which of the following is not a factor of magnetite present in the system?
Blocked components
Flow rate restricted
Cool/cold areas on the radiators
Increased pressure
The Seasonal Efficiency of Domestic Boilers in the UK outlines the efficiency rating of boilers is recognised by what abbreviation?
OFTEC
HETAS
NICEIC
SEDBUK
Due to the low surface temperature radiators originally being designed for the NHS, what surface temperature does it not reach that other radiators would?
43°C
48°C
55°C
65°C
What is the component shown?
Circulator
Air seperator
4-way connector
Impellor
