Question-and-Answer Resource for the Building Energy Modeling Community
 | 1 | initial version |
The sign convention is positive from outside to inside I believe, according to HeatBalanceSurfaceManager.cc#L4094.
I suggest you request all three following variables to make sure (source here)
Surface Average Face Conduction Heat Transfer Rate
Surface Average Face Conduction Heat Gain Rate
Surface Average Face Conduction Heat Loss Rate
