Zone valves within a property

[darkart]

The following regulation:

Building Regulation requirements: Zone Controls​

The Building Regulations require that all new systems in non-open plan domestic dwellings with a total floor area > 150m2 should have at least two separate heating zones, with one zone covering the ‘living area’.

Heating zones will often be divided to cover ‘living’ and ‘sleeping’ areas or upstairs and downstairs. Both zones must have heating control through a thermostat and individual TRVs.

All radiators must be fitted with a TRV except those in bathrooms or rooms with a room thermostat. The same applies within existing properties where it is good practice to install TRVs when replacing a boiler has drained down a system.

The Domestic Building Services Compliance Guide references the main requirements for Boiler interlock and time and temperature controls.

When do the Building Regulations apply?​

• Every time a home is built.
• Every time a home has an extension or change of use.
• Every time more than one individual component, such as a boiler, is replaced in a heating system.

!!! Does this mean if you replaced an old gas boiler, radiators system with a new system within an old property, would you now be required to zone the property or is this only for new builds???

I get, for a boiler swaps, zoning is not required, but the above is a little confusing.

 

[CBW]

If you’re planning a boiler and radiator system in an old property, or converting from a conventional system to a Combi boiler, then updating to current standards will apply, if you’re just replacing a boiler, then it wouldn’t.

 

[Madrab]

Tighter control of the heating system, when used correctly, should mean it's more efficient, with energy costs these day, why wouldn't you want to? It's not complicated to implement.