Copy and Edit

Central Heating Exam 2

Description

Construction / Engineering Quiz on Central Heating Exam 2, created by Jarmo Tossavainen on 09/05/2018.
Jarmo Tossavainen
Quiz by Jarmo Tossavainen, updated more than 1 year ago
Jarmo Tossavainen
Created by Jarmo Tossavainen over 6 years ago
425
1
0

Resource summary

Question 1

Question
1/ Which part of the Building Regulations deals with the energy efficient installation of central heating systems in domestic properties?
Answer
  • a) Part G
  • b) Part L1
  • c) Part L2
  • d) Part M

Question 2

Question
2/ Details of the heat output requirement for a particular radiator can be found in which of the following documents?
Answer
  • a) British Standards
  • b) Water Regulations
  • c) Building Regulations
  • d) Manufacturer’s brochure

Question 3

Question
3/ What is the likely outcome of rigidly fixing central heating pipework to the notched sections in timber first floor joists?
Answer
  • a) Rupture of the pipework
  • b) A reduction in energy efficiency
  • c) Corrosion of the pipework
  • d) Expansion and contraction noise

Question 4

Question
4/ The main disadvantage of using a one pipe circuit to the radiators in a central heating system is that –
Answer
  • 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

Question 5

Question
5/ Which fully pumped central heating system control component is missing from ` the following diagram?
Image:
Central Heating Questions 207 (binary/octet-stream)
Answer
  • a) Pump
  • b) Cylinder thermostat
  • c) Room thermostat
  • d) Mid-position valve

Question 6

Question
6/ What is the minimum size of open vent pipe to a fully pumped central heating system in a small domestic property?
Answer
  • a) 10mm
  • b) 15mm
  • c) 22mm
  • d) 28mm

Question 7

Question
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?
Answer
  • a) Frost thermostat
  • b) Feed and expansion cistern
  • c) Cold water storage cistern
  • d) Automatic bypass valve

Question 8

Question
What would be the main effect on the central heating system if the circulator was installed in the position shown in this diagram?
Image:
Pumppos (binary/octet-stream)
Answer
  • a. The system would be under negative pressure
  • b. The system would be mostly under negative pressure
  • c. The system would be pumping over the open vent
  • d. The neutral position would be at the base of the open vent.

Question 9

Question
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 –
Answer
  • a) 2%
  • b) 4%
  • c) 8%
  • d) 16%

Question 10

Question
The recommended vertical height from floor level to the position of a room thermostat is –
Answer
  • a) 1.0m
  • b) 1.5m
  • c) 2.0m
  • d) 2.5m

Question 11

Question
Which air separator port in the following diagram is the flow pipe from the boiler connected to?
Image:
Air Separator (binary/octet-stream)
Answer
  • a) Port 1
  • b) Port 2
  • c) Port 3
  • d) Port 4

Question 12

Question
Which of the following statements is correct in relation to the installation of thermostatic radiator valves?
Answer
  • 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

Question 13

Question
Which pipe connects to the AB port of the mid-position valve in the following diagram?
Image:
Mid Position (binary/octet-stream)
Answer
  • a) Open vent pipe
  • b) Flow pipe to the cylinder
  • c) Return pipe from the cylinder
  • d) Flow pipe from the pump

Question 14

Question
Which of the following components is fitted at the high points in pipework in central heating systems?
Answer
  • a) Automatic air vent
  • b) Non-return valve
  • c) Automatic bypass valve
  • d) Drain valve

Question 15

Question
Central heating systems with metallic pipework materials are normally soundness tested to what test pressure?
Answer
  • 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

Question 16

Question
Which of the following is part of the commissioning procedure for a new central heating system?
Answer
  • 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

Question 17

Question
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?
Answer
  • 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

Question 18

Question
The safest method of ensuring that the electrical controls in a central heating system cannot be re-activated during temporary decommissioning work is to –
Answer
  • 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

Question 19

Question
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?
Answer
  • 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

Question 20

Question
Which of the following central heating components may contain a replaceable packing gland?
Answer
  • a) Circulating pump
  • b) Automatic air vent
  • c) Thermostatic radiator valve
  • d) Room thermostat
Show full summary Hide full summary

Want to create your own Quizzes for free with GoConqr? Learn more.

Similar

IB Economics SL: Macroeconomics
Han Zhang
Principles of basic electrical circuits
Vito Martino
GCSE Music (Edexcel) Quiz
corelledavis
AQA - English Language Unit 1
Alice Love
THE PRESENT CONTINUOUS
neworld2030
AQA GCSE Music - Scales and Cadences
Mr Thompson
GCSE Biology B1 (OCR)
Usman Rauf
Biology Unit 1a - GCSE - AQA
RosettaStoneDecoded
AQA Additional Science B2.2 Tissues , Organs & Organ System Flashcards
Ilyass Jalloh
Ancient China - Glossary of Terms
Ms M
Cert 3_Card set 8 (Combining forms)
Tafe Teachers SB
Browse Library