Are you considering replacing your water heater with a gas heater? If so, it's important to be aware of the special requirements for installing a gas heater plumbing system in your home. In most cases, you can replace your own water heater if you have the necessary knowledge and acquire the appropriate permit. However, some municipal regulations may require a plumber or licensed electrician to make the necessary modifications. It's always best to contact your local department of buildings or public services to learn about regulations and requirements specific to your area. When replacing a water heater, it must be vented by an authorized and approved ventilation system that provides the proper size, height, and draft.
The lower BTUH of a gas water heater (compared to a furnace or heating boiler) may not be able to heat the inside of the chimney enough to generate an air current. Therefore, it's important to ensure that the installation complies with all current plumbing codes. In addition, if any work needs to be done on the water pipes or gas lines, you may need a plumbing permit. When installing your new water heater, you will need to turn off the gas so that you can disconnect the supply line and connect it to the new water heater. The attached installation instructions from the manufacturer of these water heaters require a minimum vertical lift in the exhaust duct of the water heater, as well as a suitable UL certified chimney cap or termination for safe ventilation of the combustion products. Replacing tank-type gas water heaters requires connections to the gas pipes and to the flue gas vent.
It's important to follow the latest edition of the National Combustible Gas Code (ANSI Z223,1-latest edition) or, in Canada, the Natural Gas and Propane Installation Code (latest edition B149,1-00) for the correct size of ventilation and ventilation systems common to other gas appliances. While pipes needed to install a gas water heater don't carry the same hazards as working with gas pipes, it's still a good idea for the person doing the work to have some experience in plumbing.To sum up, when installing a gas heater plumbing system in your home, it's important to be aware of any special requirements in your local jurisdiction. You may need a permit and should always contact your local department of buildings or public services for more information. Additionally, make sure that you follow all current plumbing codes and that you have adequate ventilation for your new water heater.
