Unvented hot water storage system
Approved Document G, Sanitation, hot water safety and water efficiency, 2015 edition with 2016 amendments, defines an unvented hot water storage system (or closed hot water storage system) as: ‘…a vessel fed with cold water from a supply pipe or dedicated storage cistern (without a vent pipe) and in which water is heated directly or indirectly. Expansion of the water when it is heated is accommodated either internally or externally and the system is fitted with safety devices to prevent water temperatures exceeding 100C, and other applicable operating devices to control primary flow, prevent backflow, control working pressure and accommodate expansion.’
See also: Vented hot water storage system.
[edit] Related articles on Designing Buildings
Featured articles and news
Art of Building CIOB photographic competition public vote
The last week to vote for a winner until 10 January 2025.
The future of the Grenfell Tower site
Principles, promises, recommendations and a decision expected in February 2025.
20 years of the Chartered Environmentalist
If not now, when?
Journeys in Industrious England
Thomas Baskerville’s expeditions in the 1600s.
Top 25 Building Safety Wiki articles of 2024
Take a look what most people have been reading about.
Life and death at Highgate Cemetery
Balancing burials and tourism.
The 25 most read articles on DB for 2024
Design portion to procurement route and all between.
The act of preservation may sometimes be futile.
Twas the site before Christmas...
A rhyme for the industry and a thankyou to our supporters.
Plumbing and heating systems in schools
New apprentice pay rates coming into effect in the new year
Addressing the impact of recent national minimum wage changes.
EBSSA support for the new industry competence structure
The Engineering and Building Services Skills Authority, in working group 2.
Notes from BSRIA Sustainable Futures briefing
From carbon down to the all important customer: Redefining Retrofit for Net Zero Living.
Principal Designer: A New Opportunity for Architects
ACA launches a Principal Designer Register for architects.
Comments
[edit] To make a comment about this article, or to suggest changes, click 'Add a comment' above. Separate your comments from any existing comments by inserting a horizontal line.