take your time, taken from the honeywell site or are they wrong as well ?
Building Regulations Part L 2010
FAQ Sheet
Every home must be divided into at least two heating zones.
Living and sleeping areas (zones) must be controlled at different temperatures by means of a thermostat.
In larger homes, these zones must also be controlled at different times.
Every home must be divided into at least two heating zones, using a thermostat controlling a motorised valve.
If the house is smaller (less than 150m2), then these can be controlled by the same timer.
If the house is larger (more than 150m2), then each zone must be controlled by its own timer.
Every radiator should be fitted with a radiator thermostat, unless it is the reference radiator for a thermostat (i.e. the radiator where the room thermostat is fitted).
All heating zones are required to be under the control of a room thermostat and motorised valve, with radiator thermostats fitted to all radiators (except the reference radiator).
This is a new requirement for all homes where the Building Regulations are applied.
The heating must be divided into two heating zones under separate temperature control for homes with a floor area less than 150m2. This means the same time programme can be used for both zones, but separate room thermostats and motorised valves are required for flow control.
For homes with a floor area greater than 150m2, full time and temperature zone control is required.
In all instances, a room thermostat can be replaced by a programmable room thermostat.
An automatic bypass valve must be fitted.
This FAQ sheet is for guidance only and at the time of production represented the latest information available to Honeywell fromvarious sources. Honeywell reserves the right at any time and without notice to change any product, specification or any other information contained in this publication and cannot accept any responsibility for loss or damage arising out of any errors that may inadvertently be contained herein.
EN1H-2535 UK01 R0811
honeywelluk.com
When do the new Part L regulations come into effect?
The new Part L comes into effect from 1stOctober 2010.
There is a new Domestic Building Services Compliance Guide that gives details of what is required. The main requirements for Boiler Interlock and time and temperature control are unchanged.
What is new in Part L 2010 Building Regulations?
What does this mean I need to do?
How do I wire in the system?
Smaller than 150m2
Larger than 150m2
Two temperature zones & independent hot water
Three independent zones