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Quiz von Jarmo Tossavainen, aktualisiert more than 1 year ago
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Erstellt von Jarmo Tossavainen
vor mehr als 6 Jahre
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Frage 1
Frage
1/ Which part of the Building Regulations deals with the energy efficient
installation of central heating systems in domestic properties?
Antworten
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a) Part G
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b) Part L1
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c) Part L2
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d) Part M
Frage 2
Frage
2/ Details of the heat output requirement for a particular radiator can be found in
which of the following documents?
Antworten
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a) British Standards
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b) Water Regulations
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c) Building Regulations
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d) Manufacturer’s brochure
Frage 3
Frage
3/ What is the likely outcome of rigidly fixing central heating pipework to the
notched sections in timber first floor joists?
Antworten
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a) Rupture of the pipework
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b) A reduction in energy efficiency
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c) Corrosion of the pipework
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d) Expansion and contraction noise
Frage 4
Frage
4/ The main disadvantage of using a one pipe circuit to the radiators in a central
heating system is that –
Antworten
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a) The last radiator on the circuit will be fed with water at a lower temperature than the first
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b) The first radiator on the circuit will be fed with water at a lower temperature than the last
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c) Pipework feeding all radiators must be 22mm in diameter
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d) The circuit cannot be pumped, gravity circulation must be used
Frage 5
Frage
5/ Which fully pumped central heating system control component is missing from
` the following diagram?
Antworten
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a) Pump
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b) Cylinder thermostat
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c) Room thermostat
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d) Mid-position valve
Frage 6
Frage
6/ What is the minimum size of open vent pipe to a fully pumped central heating
system in a small domestic property?
Antworten
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a) 10mm
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b) 15mm
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c) 22mm
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d) 28mm
Frage 7
Frage
7/ Which one of the following additional components will require to be installed
when replacing a single feed indirect cylinder with a double feed indirect
cylinder?
Antworten
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a) Frost thermostat
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b) Feed and expansion cistern
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c) Cold water storage cistern
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d) Automatic bypass valve
Frage 8
Frage
What would be the main effect on the central heating system
if the circulator was installed in the position shown in this diagram?
Antworten
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a. The system would be under negative pressure
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b. The system would be mostly under negative pressure
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c. The system would be pumping over the open vent
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d. The neutral position would be at the base of the open vent.
Frage 9
Frage
The feed and expansion cistern in an open vented central heating system
should be capable of receiving what percentage volume of water from the
heating system when heated –
Antworten
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a) 2%
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b) 4%
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c) 8%
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d) 16%
Frage 10
Frage
The recommended vertical height from floor level to the position of a room
thermostat is –
Antworten
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a) 1.0m
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b) 1.5m
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c) 2.0m
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d) 2.5m
Frage 11
Frage
Which air separator port in the following diagram is the flow pipe from the
boiler connected to?
Antworten
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a) Port 1
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b) Port 2
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c) Port 3
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d) Port 4
Frage 12
Frage
Which of the following statements is correct in relation to the installation of
thermostatic radiator valves?
Antworten
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a) Thermostatic radiator valves may only be fitted to ground floor radiators in a property
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b) Thermostatic radiator valves may only be fitted to first floor radiators in a property
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c) All radiators in a property should be fitted with thermostatic radiator valves
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d) At least one radiator in a property should be fitted without a thermostatic radiator valve
Frage 13
Frage
Which pipe connects to the AB port of the mid-position valve in the following
diagram?
Antworten
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a) Open vent pipe
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b) Flow pipe to the cylinder
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c) Return pipe from the cylinder
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d) Flow pipe from the pump
Frage 14
Frage
Which of the following components is fitted at the high points in pipework in
central heating systems?
Antworten
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a) Automatic air vent
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b) Non-return valve
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c) Automatic bypass valve
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d) Drain valve
Frage 15
Frage
Central heating systems with metallic pipework materials are normally
soundness tested to what test pressure?
Antworten
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a) 0.5 times the maximum operating pressure
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b) The maximum operating pressure
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c) 1.5 times the maximum operating pressure
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d) Twice the maximum operating pressure
Frage 16
Frage
Which of the following is part of the commissioning procedure for a new
central heating system?
Antworten
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a) Hot flushing to assist with flux removal
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b) Disinfecting the system with chlorine
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c) Removing the feed & expansion cistern during filling
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d) Lubricating the circulating pump with oil
Frage 17
Frage
When replacing a radiator and its associated valves sited on the first floor of a
property which is the most efficient way of draining the water to undertake the
work?
Antworten
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a) Turn off the valves and drain down the radiator
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b) Completely drain the whole system
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c) Drain the system to below the first floor
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d) Isolate the cistern and empty its contents
Frage 18
Frage
The safest method of ensuring that the electrical controls in a central heating
system cannot be re-activated during temporary decommissioning work is to –
Antworten
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a) Isolate the system from the supply at the consumer unit and get on with the work
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b) Switch off the supply to the system at the fused spur, retain the fuse and check for safe isolation
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c) Switch off the supply to the system at the fused spur and check for safe isolation
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d) Switch off the fused spur remove the wires from its outlet and tape up the ends
Frage 19
Frage
What is the likely problem arising from a bypass not being fitted to an open
vented close-coupled fully pumped heating system controlled by 2 x two port
valves on the heating and hot water circuits?
Antworten
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a) ‘Sucking down’ and ‘pumping over’ the open vent pipe
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b) Blockage occurring in the cold feed pipe
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c) Rapid pinhole corrosion of the radiators
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d) No cool water from the f & e cistern if the system overheats
Frage 20
Frage
Which of the following central heating components may contain a replaceable
packing gland?
Antworten
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a) Circulating pump
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b) Automatic air vent
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c) Thermostatic radiator valve
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d) Room thermostat
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