Manual manifold for heat transfer device

FIG. 1 is a front, right and top perspective view of a fan heater in accordance with my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof,

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken lines shown in the figures are for the purpose of illustrating environment and form no part of the claimed design.