3.7.1 Restrictions (Section 14.2.1)

The second bullet should be removed.

The third bullet should be replaced with the following:

  In the case of a heat exchanger in which the primary and auxiliary meshes are not identical, heat transfer may be non-conservative (i.e., the heat lost by the hot fluid may not equal the heat gained by the cold fluid). To minimize the difference in heat transfer, the topology and size of the primary and auxiliary cells should be similar.