Final answer:
The question is about legal protocols that need to be followed before installing, removing, or replacing a water heater, most likely involving obtaining a permit.
Step-by-step explanation:
The student's question relates to the legal requirements associated with the installation, removal, or replacement of a water heater. Though the question is incomplete, the most probable completion would be 'without first obtaining a permit' or following some similar legal protocol depending on jurisdiction.
The information about the water heater being rated at 30,000 Btu per hour and taking an hour and 20 minutes to complete the job, while possibly related to the instructions or specifics of the heater, is not directly relevant to the legal aspect of water heater installation.