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WorksheetsCentral Heating revision | 6035
Total questions: 22
Worksheet time: 12mins
Identify what type of system is shown here.
C plan plus
Semi gravity system
Unvented system
Full gravity pumped system
To conform with European standard, all radiators manufacture must comply with:
BS 4422
BS 6700
BS EN 442
BS EN 104
The type of system shown can be identified as?
W-plan system
S-plan system
Y-plan system
Combination boiler system
On a three port mid-position valve, what does port 'A' supply?
The boiler
Central heating circuit
F&E cistern
Hot water circuit
The most common arrangement of radiator valve is:
BBOE
TBOE
TBSE
TTOE
The type of radiator shown here is?
Double panel with single convector
Single panel with double convector
Double panel
Single panel with single convector
Dependant of the skirting, what is the typical height that you should install radiators from floor level?
100mm
150mm
200mm
250mm
The symbol shown here can be identified as?
Single check valve
Double check valve
Service valve
Circulator
How does the component circled here work?
Filling loop - Allows the boiler to be topped up when the pressure has dropped
Pressure relief valve - Relieves the system of any build-up of pressure
Bypass valve - Allows a flow of water through a boiler to reduce the chance of over-heating
Automatic air vent - Allows the air within the system to be released through all high points
The diagram shown can be identified as?
Unvented system
Semi gravity system
Combination boiler
Fully pumped system
If the circulator is installed after the vent pipe but before the cold feed, what error has occurred?
The system is working under negative pressure, pushing water back into the cistern
The system is working under positive pressure, pushing water back into the cistern
The system is working under negative pressure, pumping over the vent pipe
The system is working under positive pressure, pumping water to the neutral zone
Although not the most common arrangements of radiator valves, the most efficient setup is?
TBSE
TTOE
BBOE
TBOE
The most common material used for insulation is?
Felt lagging
Polyester
Fibreglass
Asbestos
The type of radiator shown here is?
Column radiator with towel rail
Fan convector with towel rail
LST radiator with towel rail
Panel radiator with towel rail
Building Regulations part L covers the conservation of fuel and energy. What is the Northern Ireland equivalent?
Specific Guidance part L
Technical Guidance part L
Regulated Guidance part L
Building Guidance part L
The function of the zone valves is?
To allow simultaneous control of both hot water and central heating circuits
To allow control for either hot or cold water circuits
To allow control of either hot water or central heating circuits
Before work commences, what procedure must be carried out?
Informing the customer of the water being shut off
Safe isolation procedure
Boiler interlock procedure
Thermal lockout procedure
W-plan system
S-plan system
Y-plan system
Combination boiler system
The component circled can be identified as?
Automatic air vent
Expansion vessel
Automatic bypass valve
Filling loop
Domestic steel pipework would be:
Light grade
Medium grade
Heavy grade
A 22mm copper pipe on the central heating system would be:
R220
R250
R290
R300
On a W-plan or combination boiler, what would the three-port diverter valve give water priority to?
Cold water
Central heating
Hot water
Primary flow
