c heating

Question 1

What is the main purpose of central heating?

Answer 1

To maintain thermal comfort

Question 2

What system would have a three port valve?

Answer 2

Y Plan system

Question 3

What System would have 2 x Two Port Valves?

Answer 3

S Plan system

Question 4

Which central heating system is most likely to have a filling loop as part of the system?

Answer 4

Sealed

Question 5

What Building Regulation Documents the energy efficiency requirements for the installation of a
domestic central heating system?

Answer 5

Approved document L1

Question 6

What does a air separator do?

Answer 6

Separate the air from water

Question 7

In what significant way is selective heating, or zoned heating, different to full central heating?

Answer 7

Only heats up part of the property

Question 8

What is background heating and why is it different to full central heating?

Answer 8

Heats up property at a lower temperature

Question 9

What type of central heating system would have a combi boiler?

Answer 9

Sealed

Question 10

What material is commonly used as domestic heating pipework insulation material?

Answer 10

Expanded nitrile rubber

Question 11

What tool would you use to attach radiator valves to the radiator?

Answer 11

Radiator Valve Spanner

Question 12

What type of central heating system would have a separate flow and return pipe running to each
radiator?

Answer 12

A two pipe system

Question 13

What plastic would be used to manufacture plastic pressure pipe used for a central heating system?

Answer 13

Polybutylene

Question 14

Which material is used for the manufacture of panel radiators, commonly used in domestic
installations?

Answer 14

Pressed steel

Question 15

What would be the a main advantage of using plastic pressure barrier pipe in heating systems?

Answer 15

Speed of installation

Question 16

In which location of a house is it normally an essential requirement to insulate central heating pipework?

Answer 16

Where positioned underneath a timber suspended ground floor

Question 17

Panel radiators mainly use which heat transfer principles?

Answer 17

Convection

Question 18

Which type of heat emitter is often used in a kitchen where space to hang a radiator is limited?

Answer 18

Kick space heater

Question 19

Which British Standard states the European Standard for the manufacture of radiators?

Answer 19

BS EN 442

Question 20

In relation to central heating systems, Delta T refers to the difference between the mean water
temperature in the radiator (water inside) and the?

Answer 20

Ambient air temperature.

Question 21

What would be the main advantage of underfloor heating?

Answer 21

There is even heat distribution

Question 22

When the TRVs or zone valves on a system close, what is the purpose of the automatic by-pass valve?

Answer 22

To ensure water can flow through the boiler

Question 23

A new central heating is being commissioned. What should be completed prior to the water tightness
test?

Answer 23

All TRV’s are set to maximum and lockshield radiator valves are open

Question 24

Which radiator valve is intended for maintenance purposes and not for use by the occupier?

Answer 24

Lockshield valve

Question 25

Which radiator valve is designed for manual control of the radiator by the occupier?

Answer 25

Wheelhead valve

Question 26

What formation is normally used when connecting radiator valves on a domestic radiator?

Answer 26

Bottom, opposite end (BOE)

Question 27

What is the main tool that is required to bleed a radiator/ central heating system?

Answer 27

Radiator key

Question 28

What type of central heating component is used to vent air without manual operation?

Answer 28

Automatic air vent