Our project has air handling units without any smoke dampers physically on the unit; the first main smoke damper is downstream inside the ductwork where it first penetrates a fire-rated partition (in this case it is the floor slab above/below the air handling unit).
When an AHU is shut off...
Does ASHRAE 135 (controls spec) make any provisions for a "change-over" delay when switching a VAV terminal unit from heating to cooling or vice versa?
This seems like a common sense practice, to prevent short-cycling, but I'm getting some resistence from the client and they're saying that it...
