Patent ID: 7637002

Claim:
An assembly for removing a water cannon assembly from a wall box, the wall box having a wall box opening and being coupled with a combustion device having an interior volume defined by a wall, the water cannon assembly including: a steering tube having a steering tube conduit and an aspirating opening extending through the wall; a supply tube located within the steering tube and defining a supply tube conduit configured to supply a cleaning fluid to the combustion device interior volume; and a pivot joint connected to the steering tube, the pivot joint forming a substantially fluid-tight wall box seal with the wall box opening when the water cannon assembly is in a first position with respect to the wall box; the assembly comprising: an aspirating device coupled with the steering tube in order to form a substantially fluid-tight aspirating seal between the aspirating device and the steering tube, wherein the aspirating device is configured to supply an aspirating fluid flow through the aspirating opening of the steering tube and into the steering tube conduit; and a sealing assembly located adjacent to the wall box opening, the sealing assembly and a sealing portion of the removable device forming a substantially fluid-tight seal when the removable device is in a second position with respect to the wall box.