Hello Design Review Experts, During a design review for a residential high rise, we noted that several areas of common space did not seem to have the capacity to use an economizer, Demand Control Ventilation (DCV) or night set-back. I believe that ASHRAE and the IECC have pushed for these modes in most common space applications though I am not exactly sure whether they are in compliance. Due to financial constraints the design switched from the typical VAV air-handling unit system to using 8 heat pumps which is why so many common modes of operation have been deleted. Here were the explanations I received from the EOR: 1. Since the whole building is classified as residential, common areas such as a leasing office, basketball court, gym, computer room (etc...) would also fall under residential. Therefore they do not need to have an economizer or DCV. 2. If not classified as residential, what modes of operation would be 'required' by ASHRAE or IECC for the leasing office. (and other common areas) 3. Many areas are planned to be 24/7, so therefore, they do not need to comply with night setbacks. 4. Is there a difference in mode requirements for a large AHU vs. smaller HPs? Or is the type of equipment irrelevant with only the space type and occupancy being relevent. 5. These Heat Pumps will have programmable stats... However, they will be locked behind plastic so that residents cannot change temperatures... Does this really count as a programmable stat satisfying 'controllability of systems - thermal comfort' Thanks to anyone who wants to comment on this. Does anyone know of a good ASHRAE IECC forum to post this on as well? Pete
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