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Control Packs

From the 6th April 2014, a revised version of Part L Building Regulations came into force. There have been some minor changes to the previous version, the requirements are:

1. The requirement for dwellings under 150m² to have at least two heating zones has now been removed. To provide zone control in such dwellings TRVs (Thermostatic Radiator Valves)

should be provided on all radiators (except the room with the room thermostat) on new systems. It is also good practice to install TRVs when replacing a boiler in an existing system as

it is convenient and timely to do this while the system is drained down.

2. The Domestic Building Services Compliance Guide now contains specific recommendations for minimum standards when only a part, or parts, of an existing system are being replaced, the following are considered good practice:

I. Hot Water Cylinder - Install a boiler interlock and separate timing for space heating and hot water

ii. Boiler - Fit individual radiator controls such as TRV’s on all radiators except those in the room with a room thermostat

iii. Radiator - Fit individual radiator controls such as TRV’s on all radiators except those in the room with a room thermostat

iv. New heating system – existing pipework retained - Minimum standard to fit individual radiator controls such as TRV’s on all radiators except those in the room with a room thermostat. 
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