Tankless Gas Water Heater Installation Requirements

Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models.

Tankless gas water heater installation requirements.

For both gas and electric models a tankless water heater s overall energy efficiency is measured using an energy factor ef rating. A full bore shut off valve is required on cold water side unions must be installed within 12 inch of water heater to facilitate removal first five 5 feet of water line insulated maintains min. Mount the tankless water heater securely to the platform. Build a platform with 2 x 4 inch pieces of lumber that will allow you to mount the new tankless water heater about four inches from the wall.

Ok so san jose has the following requirements for where to install the tankless water heater. This ef rating is based on test procedures developed by the u s. Enclosed areas just as closets might need air ducts and extra air inlets. Please take these things into consideration before you decide to diy.

As a general rule any gas heater which is tankless uses combustion air must have a minimum area of 10 000 cu. The manual clearly says to appoint a licensed electrician or plumber for the job. A tank type water heater and a tankless or demand water heater for. The models which need combustion air from the outside are required to have a second hose which is supposed to be put in.

Around the water heater. Tankless water heaters generally require larger diameter gas supply lines higher voltage power supply if contemplating electric on demand dedicated special stainless steel flue known as category ii iii or iv or larger diameter exhaust system. If money or return on investment is the principal reason you are considering converting to a demand type water heater you should perform an accurate total cost analysis that reflects all of the costs to install operate maintain both types of water heaters. Electrical even gas water heaters have electrical parts and need to be hooked up to your breaker box.

Plumbing the most important skill is needed for working with both gas and water lines installing fixtures and ensuring there are no potential leaks or pressure issues. Insulation is applied to the entire loop. Vent termination all tankless water heater vents must terminate at least 4 feet from a property line. And so some manufacturers don t recommend diy installation.

Choose a location for the new water heater that will allow you to vent it to the outside easily.