Larry-D wrote:
Check/research the manufacturer's data on this. It may be using the full container as a "cool down" period until its emptied. Worked a sail boat fire where the owner did this exact thing. Smaller unit though. It was a great idea until the unit never shut off, overheated and caught fire in the head. It was a new boat to him and because of the $ amount damage/repair the insurance company totaled it.
The unit is designed for attachment of a drain hose, and is rated for continuous duty, it even has a continuous operation mode setting.