As of July 1, 2003, new residential gas-fired units manufactured with storage capacities of 30, 40, or 50 gallons must meet American National Standards Institute (ANSI) standard, ANSI Z21.10.1-2001. (For details on the new standard, see the feature article “Water Heater Design Changes In The Works” in the July 21, 2003 issue of The News.)
Rheem’s Guardian SystemThe new Rheem Guardian System™ water heater not only meets the new ANSI standard, but also incorporates some unique design enhancements, says the company, including:
Because of this, the Guardian System's safety mechanism is designed to completely shut off the air supply to the combustion chamber whenever a flammable vapor incident occurs. This air shutoff system helps ensure that the water heater will shut down quickly and safely. Flammable vapors will starve and extinguish, so flames cannot spread beyond the combustion chamber.
1. Air flows into the combustion chamber from the sides, not from the floor where dust and dirt accumulate.
2. One hundred percent of the combustion air is prefiltered by a unique intake design.
3. The system's air pathway to the combustion chamber is guarded by special airflow baffles that prevent a significant amount of LDO from reaching and clogging the arrestor plate. (See illustration at right.)
This three-way approach effectively prevents LDO obstruction, the company says.
For more information, visit www.rheem.com.