WorksheetsCentral Heating 1
Total questions: 30
Worksheet time: 15mins
BS EN 14336 is concerned with which of the following?
Manufacture of radiators
Design of water based heating systems
Installation and commissioning of water based heating systems
Conservation of fuel and power
What is the main purpose of central heating?
To provide light in every room
To provide thermal comfort within a property
To cool down the property
To increase humidity in the property
What must be considered to attain thermal comfort?
The customer's aesthetic preferences
The customer's economic constraints
The customer's dietary needs
The customer's travel plans
Who sets the specific temperature in both full and selective central heating systems?
The manufacturer
The customer
The technician
The government
At what outside temperature is a system classified as background heating if it cannot achieve the desired comfort temperature?
0°C
-5°C
-10°C
5°C
What is the primary function of background central heating?
To heat rooms to a high temperature
To cool rooms
To take the chill out of rooms
To provide air conditioning
Which system is preferred now over an open fire for heating a property?
Central heating
Open fire
Electric fireplace
Wood stove
What types of fuel have systems transitioned to over the years?
Wood and coal
Gas, oil, and electricity
Solar and wind
Nuclear and geothermal
What are the two main categories of modern domestic central heating systems based on?
The type of fuel used
The way the system is filled with water and the pressure it operates at
The size of the system
The brand of the system
What do sealed, pressurised systems incorporate to handle the expansion of heated water?
A feed and expansion cistern
A solar panel
An expansion vessel
A gravity tank
What type of system is a two-pipe reversed return system associated with?
One-pipe systems
Semi-gravity systems
Two-pipe systems
System boiler option
Why must the pipework in full gravity systems be laid at the correct fall?
To allow convection to work properly
To prevent leaks
To reduce noise
To increase pressure
What type of hot water cylinders are still in use in some older houses?
Double feed cylinders
Single feed or primatic cylinders
Electric cylinders
Solar cylinders
How is the primary circuit filled in single feed or primatic hot water cylinders?
Through an F&E tank
Via the cold feed to the cylinder
Using a pump
Through a solar panel
Why can't inhibitors be added to single feed or primatic heating systems?
They are too expensive
They are not needed
It is a gravity only system
They cause corrosion
What is a characteristic of a one pipe gravity system?
It uses multiple pipes for each radiator.
It relies on gravity to heat radiators.
It is the most expensive system to install.
It does not require a boiler.
What component is responsible for circulating the water in the system?
Boiler
Time clock
Central heating circulating pump
Feed and expansion cistern
What is the function of the feed and expansion cistern in the system?
To heat the water
To store excess water and allow for expansion
To circulate the water
To control the time of heating
What is the purpose of the time clock in the system?
To heat the water
To control the timing of the heating
To circulate the water
To store excess water
What is the main function of the boiler in the system?
To circulate the water
To heat the water
To store excess water
To control the timing of the heating
What is one advantage of a one pipe gravity system?
High efficiency
Cheap to install
Compliant with Building Regulations part L
Controlled room temperature
How is the room temperature described in a one pipe gravity system?
Controlled
Uncontrolled
Constant
Adjustable
What was the role of the room stat in the heating control of a two pipe semi gravity system?
To increase water temperature
To switch off the pump
To mix flow and return waters
To control hot water temperature
What is the function of the feed and expansion cistern in the system?
To heat the water
To control the pump
To allow for water expansion
To circulate the water
What is the role of the programmer in the system?
To heat the water
To control the timing of the heating
To circulate the water
To allow for water expansion
What is the diameter of the flow and return pipes in the system?
15mm
22mm
28mm
30mm
What is a compliance issue with two pipe semi gravity systems?
Not compliant to Building Regulations part L
All heat emitters reach the same temperature
Cheaper to run
Quicker when heating up
What is a common issue with older gravity-fed heating systems?
They are too energy efficient.
They can be noisy.
They overheat easily.
They require frequent refilling.
What is the main advantage of using a two-pipe system over a one-pipe system?
Lower installation cost
Uses less water
More efficient heat distribution
Requires less maintenance
What is a common method to improve the energy efficiency of an older heating system?
Switch to a single-pipe system
Increase the water temperature
Use a programmable thermostat
Install larger radiators
