The credit language for this Option says "provide a separate control zone for each solar exposure and interior space."
The proposed design is pretty typical VAV. Groups of private offices are served by a VAV box, with one of the offices having a thermostat. Exterior offices which are grouped share the same solar exposure. Interior offices are zoned in groups of 4.
We received a review comment which says:
- Interior private offices (such as Office 1032) do not appear to have individual thermal controls.
Provide documentation to demonstrate that all interior private offices have been provided with a separate thermal control. Refer to the LEED ID+C v4 Reference Guide, Further Explanation Section for additional guidance regarding specialty occupancy spaces and the controls requirement.
In reviewing the "Further Explanation Section" it says "Interior Private offices or interior non-densely occupied specialty use spaces. A separate thermal control for each space is sufficient.."
Must I provide a thermal control for each private office to achieve this credit?
The credit requirements seem to say a zone for the entire interior is sufficient, but the Further Explanation Section uses the term "space", suggesting a room by room control. Providing a Thermostat in each interior office would be quite extraordinary.
For the tenant fit-out of spaces, provide a separate control zone for each solar exposure and interior space. Provide controls capable of sensing space conditions and modulating the HVAC system in response to space demand for all private offices and other enclosed spaces (e.g., conference rooms, classrooms).