Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
Well, that's true that the damper will open when using reverse action. But for those heating coil types there will NOT be an increase in heating rate unless the maximum reheat temperature was tripped and then there can be an increase in heating rate since at higher flow rates the supply air temperature will decrease. For the HW coil the heating rate will actually increase because the coil leaving water temperature will decrease thereby allowing more heating capacity. So using reverse action with these non-water heating coil types does not always help to meet the zone load and will just waste fan heat. The documentation should be updated to discuss these impacts.
