Energy efficiency for gas-fired
and oil-fired domestic heating
and hot water systems
Session 6:
Identify requirements of
the minimum standards
for the insulation of
pipework
Relating to stand-alone
glandless heating
system circulators
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Session objectives and activities
By the end of the session the learner will be able to:
• Identify the key requirements of the minimum standards for
insulation of pipework for gas-fired and oil-fired wet central
heating and hot water storage systems.
• Relating to stand-alone glandless heating system circulators.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Session outcomes
By the end of the session the learner will be able to:
• Identify the key requirements of the minimum standards for
insulation of pipework for gas-fired and oil-fired wet central
heating and hot water storage systems
• Relating to stand-alone glandless heating system circulators.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 –Identify requirements of the minimum standards for the insulation of
pipework
Key websites
If you are unsure where to look for regulatory information and guidance, try one
or more of the following websites:
•
UK government Planning Portal www.planningportal.gov.uk
•
Building and Engineering Services Association (B&ES) www.b-es.org/b-esconnections/technical/
•
Energy Saving Trust www.energysavingtrust.org.uk/organisations
•
Scottish and Northern Ireland Plumbing Employers’ Federation
www.snipef.org/
•
Welsh Government www.wales.gov.uk/topics/planning
•
Chartered Institution of Building Services Engineering www.cibse.org
Do not feel you must limit your search to these sites if
you have ideas of others worth exploring.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Key web pages
You may have found a range of websites that contain relevant information.
Note the key websites in your course folder for future reference.
Tutor to add specific websites if felt helpful
Websites, regulations and standards are frequently updated so you may want to revisit
websites and conduct further research in future to ensure you are always using the
latest information.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Work sheet
Please work individually to complete the work sheet.
Answers are shown on the following slides.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Solutions
Question 1
For new systems, if secondary circulation is used, all pipes kept hot by
that circulation must be insulated.
Question 2
Where the pipe diameter size is 22mm OD the permissible heat loss is
9.12 W/m.
Question 3
All pipes should be insulated to 1 metre from their point of connection
to the hot water cylinder in new systems.
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Solutions
Question 4
When installing a replacement oil boiler, you should insulate any pipe
work exposed as a result of your work.
Question 5
Where insulation is labelled as complying with the Domestic Heating
Compliance Guide it must not exceed the maximum permissible heat loss
(W/m) level for pipework with outside diameter of: 



10mm = 7.23 W/m
15mm = 7.89 W/m
22mm = 9.12 W/m
28mm = 10.07 W/m
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Session 6 – Identify requirements of the minimum standards for the insulation of
pipework
Solutions
Question 6
You will find additional guidance for insulation of heating and hot water
pipework in unheated areas against freezing in:
BS 5422:2009 Method for specifying thermal insulating
materials for pipes, vessels, ductwork and equipment operating
within the temperature range -40°C to +700°C
BRE Report No 262 Thermal insulation: avoiding risks, 2002
edition
Energy efficiency for gas-fired and oil-fired domestic heating and hot water systems
Next session: B revision
During this session you will:
•
•
•
•
Be briefed on the end of course assessment
Revise topics covered throughout the course
Complete practice calculations
Have opportunities to ask about anything from the course you
are unsure about