Central Heating Exam 2

a) Part G

b) Part L1

c) Part L2

d) Part M

a) British Standards

b) Water Regulations

c) Building Regulations

d) Manufacturer’s brochure

a) Rupture of the pipework

b) A reduction in energy efficiency

c) Corrosion of the pipework

d) Expansion and contraction noise

a) The last radiator on the circuit will be fed with water at a lower
temperature than the first

b) The first radiator on the circuit will be fed with water at a lower
temperature than the last

c) Pipework feeding all radiators must be 22mm in diameter

d) The circuit cannot be pumped, gravity circulation must be used

a) 10mm

b) 15mm

c) 22mm

d) 28mm

a) Frost thermostat

b) Feed and expansion cistern

c) Cold water storage cistern

d) Automatic bypass valve

a) 2%

b) 4%

c) 8%

d) 16%

a) 1.0m

b) 1.5m

c) 2.0m

d) 2.5m

a) Thermostatic radiator valves may only be fitted to ground floor radiators in
a property

b) Thermostatic radiator valves may only be fitted to first floor radiators in a
property

c) All radiators in a property should be fitted with thermostatic radiator valves

d) At least one radiator in a property should be fitted without a
thermostatic radiator valve

a) Automatic air vent

b) Non-return valve

c) Automatic bypass valve

d) Drain valve

a) 0.5 times the maximum operating pressure

b) The maximum operating pressure

c) 1.5 times the maximum operating pressure

d) Twice the maximum operating pressure

a) Hot flushing to assist with flux removal

b) Disinfecting the system with chlorine

c) Removing the feed & expansion cistern during filling

d) Lubricating the circulating pump with oil

a) Turn off the valves and drain down the radiator

b) Completely drain the whole system

c) Drain the system to below the first floor

d) Isolate the cistern and empty its contents

a) Isolate the system from the supply at the consumer unit and get on with
the work

b) Switch off the supply to the system at the fused spur, retain the fuse
and check for safe isolation

c) Switch off the supply to the system at the fused spur and check for safe
isolation

d) Switch off the fused spur remove the wires from its outlet and tape up the
ends

a) ‘Sucking down’ and ‘pumping over’ the open vent pipe

b) Blockage occurring in the cold feed pipe

c) Rapid pinhole corrosion of the radiators

d) No cool water from the f & e cistern if the system overheats

a) Circulating pump

b) Automatic air vent

c) Thermostatic radiator valve

d) Room thermostat