Regarding the typical home (vertical cylindrical type) gas fired hot
Is it "legal," or a good idea, to shut off the water supply to these
units when, e.g., going away on vacation and one would want to shut off
the whole house water supply ?
Have had some pinhole water leaks in house Copper piping, and shutting
off the house water supply on vacation seems like a good idea.
But, was wondering about the safety for the gas fired water heater.
For the typical reasonably modern, heater, if a leak, somewhere,
develops, and the tank, somehow, gets depleted of water, is there some
sort of over-temp safety that would shut off the gas supply ?
Any thoughts on this would be appreciated.
BTW: -Probably the furnace would be O.K., as it's forced hot-air.
-Just out of curiosity: what legal or safety rules would apply
to a forced hot water system; same as for the water heater ?