Ultra Low Nox Water Heater Requirements

Please refer to the authority having jurisdiction for guidance.

Ultra low nox water heater requirements.

The burners use fgr adjusted fuel air ratios plus a staging in order to have low emissions. The state of utah has requirements limiting the nox nitrogen oxide emissions of gas water heaters. Shop all water heaters commercial water heaters. All other states require standard models.

Both commercial grade and residential water heaters must meet lower emissions standards in those states. Or an equipment grounding conductor must be run with. This water heater must be connected to a grounded metal permanent wiring system. I d like to answer a few of the questions i ve heard from members of the public about the switch to ultra low nox water heaters.

The new rule requires that all water heaters sold in utah must reduce nox emissions by 75 percent as of november 1 2017. Ultra low nox water. The turndowns are less than the ratio of 8 1. For ultralow nox the emissions are between 7 to 15 ppm.

Our low nox solution. The ultralow nox can have 5 to 9 emissions of oxygen a turndown ratio of 4 1 or 3 1. Grounding instructions this water heater must be grounded in accordance with the national electrical code and or local codes. They are designed to comply with regulations in certain air quality districts in california and were sold primarily in california.

This recall includes 30 40 and 50 gallon natural or propane gas fired ultra low nox emission gas water heaters. California s south coast air quality management district scaqmd and the san joaquin valley air pollution control district sjvapcd introduced ultra low nox rule 1111 and rule 4905 respectively which require nox emissions of less than 14 nanograms per joule. Certain counties in the state of california are required to meet south coast air quality management district s nox emissions requirements. Low nox commercial water heaters are required in texas and ultra low nox water heaters are required in most of california.