At the recent IOR best practice webinar for service engineers, Bill Barlow, OEM business unit director for Conex Bänninger, provided tips on how and where the manufacturer’s >B< MaxiPro press-fit range should be used for pipework joints, as well as the training available.
Here, Anthony Barnett, Technical Marketing Manager at Armacell, looks at why insulating brackets correctly in a heating and cooling system is just as important as the pipework itself.
The thickness of the insulation material used for pipes and fittings must obviously meet minimum regulatory requirements. However, in some situations there may be other factors to consider, for example, if there is an increased risk of legionella because the hot and cold pipes are laid in the same duct or water does not circulate regularly, it may be necessary to use what is known as 100% insulation.
This is where the thickness of the insulation roughly corresponds to the outer pipe diameter. That would mean if the pipe diameter is 22mm, the 100% insulation thickness would also be 22mm. On hot drinking water pipes this not only prevents legionella, but protects the pipes against unnecessary energy losses. For cold water pipes, this approach protects against freezing in cold weather as well as providing protection against unwanted temperature rises.
A-Gas Managing Director John Ormerod on high temperature work and how the regulations have changed surrounding this topic.
Brazing pipes is an integral part of the job for fridge and air conditioning engineers. Oxy-acetylene provides the highest temperature for this line of work which makes it a popular choice for installers. This mixture delivers a temperature of approximately 3500°C which is ideal for work with larger copper pipes.