The ornamental design for a heatexchangerassembly, as shown and described.
FIG. 1 is a perspective view of a heat exchanger assembly showing my new design.
FIG. 2 is a top view thereof.
FIG. 3 is a front view thereof of only the lower part of the heat exchanger assembly, the unclaimed upper part of the heat exchanger assembly having been removed for purposes of clarity.
FIG. 4 is a right end view thereof.
FIG. 5 is a bottom view thereof.
FIG. 6 is a back view thereof.
FIG. 7 is a left end view thereof; and,
FIG. 8 is a cross-sectional view thereof taken in the plane VIII-VIII as indicated in FIG. 3.
Any broken lines which may be shown in the views are for illustrative purposes only, and form no part of the claimed invention.