System design

The Ensbury boilers do not require back end protection pumps.

There is no minimum flow rate required with these boilers for purposes of cooling, however minimum flow rates need to be maintained to maintain energy output.

See product

Yes. The Purewell Variheat boiler is able to operate on an open vented heating system.

We would advise compliance with minimum pressure requirements at boiler, reference guidance note INDG436 (Health and Safety Executive).

Open vent and cold feed pipes must be installed correctly and in compliance with BS6644. You can refer to the installer guide for detailed information on Open Vent and Cold Feed pipes.

However, Hamworthy recommends the use of sealed heating systems, where possible.

If you want to know the difference between a sealed system and open vented system, find out more here.

See product

Yes. The Wessex ModuMax boiler is able to operate on an open vented heating system.

We would advise compliance with minimum pressure requirements at boiler, reference guidance note INDG436 (Health and Safety Executive).

Open vent and cold feed pipes must be installed correctly and in compliance with BS6644. You can refer to the installer guide for detailed information on Open Vent and Cold Feed pipes.

However, Hamworthy recommends the use of sealed heating systems, where possible.

If you want to know the difference between a sealed system and open vented system, find out more here.

See product

While the installation of heat pumps will play a large part in helping the Government achieve its net zero target – air source heat pumps (ASHPs) can fit almost anywhere: retrofit or new build, domestic or industrial and commercial, mixed-use developments – but what about the opportunity in buildings that are not ready to rely completely on low carbon heating systems?

Read more here