Pressurisation of Closed Heating and Cooling Systems (BG 82/2022)

Contact Information Centre

The maintenance of acceptable pressures whilst accommodating thermal expansion is one of the key factors in ensuring continuous and correct functioning of heating and cooling in buildings. This guide explains the principles of pressurisation, the different types of equipment used, and the calculation procedures following both British and European standards.

Download a sample preview

In the context of closed heating and cooling systems, the term pressurisation covers:

  • Maintaining system pressure within acceptable limits
  • Accommodation of thermal expansion and contraction
  • The application of safety devices

It may also include automatic top-up of system water and initial system filling.

This guide explains the principles of pressurisation, the different types of equipment used, and the calculation procedures following both British and European standards. The guide has been developed with a steering group of industry experts, following discussions on the importance of pressurisation, in the context of closed heating and cooling systems.

The maintenance of acceptable pressures whilst accommodating thermal expansion is one of the key factors in ensuring continuous and correct functioning of heating and cooling in buildings, hence delivering good thermal comfort to occupants.

Correct pressurisation prevents system failures, thus saving building owners time and cost related to system downtime and repairs.

Get updates and special offers

Subscribe now to get special offers, links to useful articles on topical issues, best practice information, market intelligence, free downloads and news.

Product details

  • Published: November 2022
  • Publisher: BSRIA
  • Author: Rob Clemson
  • ISBN: 978-0-86022-796-0