NOVELTY - A fuel cell installation comprises a support structure (14); a cell stack assembly (12) including a fitting; and an interfacing structure (24) carrying a connector configured to receive the fitting in an interconnected relationship.    USE - The fuel cell installation is used for installing a cell stack assembly into a support structure (claimed).    ADVANTAGE - The present invention provides a fuel cell installation which is simple to align the cell stack assembly with the support structure and achieve the connections between the electrical and fluid fittings and the connections at the support structure, without having tool access to make these connections.    DETAILED DESCRIPTION - A fuel cell installation comprises a support structure (14); a cell stack assembly (12) removably insertable into the support structure from an uninstalled position to an installed position during an installation procedure, the cell stack assembly including a fitting; and an interfacing structure (24) mounted on one the support structure and the cell stack assembly, the interfacing structure carrying a connector configured to receive the fitting in an interconnected relationship, at least one of the fitting and the connector movable in a plane relative to the support structure during the installation procedure. INDEPENDENT CLAIMS are:    (1) a method of installing a cell stack assembly into a support structure by inserting a cell stack assembly into a support structure in an installation direction; engaging a fluid fitting on the cell stack assembly with a fluid connector mounted on the support structure; and repositioning the fluid fitting and fluid connector relative to one another in a direction transverse to the installation direction; and    (2) a fuel cell arrangement comprising an interfacing structure configured to be mounted on one of a support structure and a cell stack assembly, the interfacing structure carrying a connector configured to receive a cell stack assembly fitting in an interconnector relationship, the interfacing structure configured to provide at least one of the fitting and the connector moveably in a plane relative to the support structure during an installation procedure.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of a rear of a fuel cell assembly.    Cell stack assembly (12)    Support structure (14)    Vertical member (16)    Horizontal member (18)    Front end (20)    Rear end (22)    Support bracket (23)    Interfacing structure (24)