ENE 11 - Installed controls

Installed controls – Filtering of questions - KBCN1678

Where the building has no heating, cooling or mechanical ventilation or humidification, Ene11 can be filtered out by answering that there is none of the above to each of the relevant questions.  Where some systems are applicable, the points available will be filtered out, based on the answers.  For instance, where only question 1 and 2 are applicable, 6 points would be available and where only thermostatic vales are provided (Question 1 answer for 2 points), only 33% of the points would be achieved, or 1 credit as per Table 22. In relation to the wording for questions 1 to 3, for clarity:

• Questions 1 and 2 should only be filtered out where there is no heating AND no cooling. They will still be applicable if there is only heating.
• Question 3 will only be applicable where there is both heating and cooling. It is not applicable if there is only heating.

09 August 2024 - Re-worded for clarity.

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Interlock controls – clarification - KBCN1491

An interlock is a control that is wired so that when there is no demand for heating / cooling in a space, the heating / cooling generator and the associated pumps are switched off. Use of thermostatic radiator valves (TRVs) alone does not provide interlock. Partial interlock means that the cooling and heating interlock controls are separate. However, the control function may be set up to minimise the possibility of simultaneous heating and cooling. Total interlock means the controls are wired so that simultaneous heating and cooling is not possible. Where there are separate local heating or cooling units present, these will also need to be wired into the control system for total interlock to avoid the possibility of simultaneous heating and cooling.

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