it s clearly mentioned in this section that the baseline building supply and return fans shall operate continuously whenever spaces are occupied and shall be cycled to meet heating and cooling load during unoccupied hours.
my questsions are:
1-is this applicable for redidential units where for example the unit might not be rented for monthes .
2-is this mendatory which means that the tenant (leaser owner) might turn off his unit when not needed to save power as in his opinion having his units turned on when not ocupied his a waste f energy and this is conisdered as a bad design.
3- can we achieve that without connecting the units to the BMS.
4-in which report in energy modeling it is requried to show the night setback.
is there any solution for this night setback control if it is not a common practice.
your quick response is highly appreciated.
regards,
tarek
Christopher Schaffner
CEO & FounderThe Green Engineer
LEEDuser Expert
962 thumbs up
January 10, 2011 - 7:30 pm
1 - yes, but your model probably should not reflect significant unoccupied space. Occupancy schedules must be identical in both base and design case.
2 - In real life, the tenants can do whatever they want. In the model, you've got to have ventilation when the spaces are occupied.
3 - I don't see why not.
4 - You are not required to model night setback, but the schedules should be identical in the base and design case.