The ornamental design for a firelog with burn channels, as shown and described.
FIG. 1 is a top and front perspective view of a fire log with burn channels;
FIG. 2 is an end perspective view of the fire log with burn channels of FIG. 1 (from the rear);
FIG. 3 is a top and side perspective view of the fire log with burn channels of FIG. 1;
FIG. 4 is a bottom and front perspective view of the fire log with burn channels of FIG. 1;
FIG. 5 is a top perspective view of the fire log with burn channels of FIG. 1;
FIG. 6 is a bottom perspective view of the fire log with burn channels of FIG. 1;
FIG. 7 is an end perspective view of the fire log with burn channels of FIG. 1 (from the front);
FIG. 8 is a side perspective view of the fire log with burn channels of FIG. 1 (from the right); and,
FIG. 9 is a side perspective view of the fire log with burn channels of FIG. 1 (from the left).
The broken lines in the drawings represent portions of the fire log with burn channels that are not included in the claim. The broken lines form no part of the claimed design.