|american national standards institute (ansi)|
Agency that sets standards for safety of gas water heaters.
|anode or anode rod|
Sacrificial component made of aluminum, magnesium, or other alloys, that is corroded by electrical currents in order to protect the inside of the tank.
|british thermal unit (btu)|
- The amount of energy required to heat one pound of water by 1°f.
- The amount of heat required to raise the temperature of one pound of water one degree fahrenheit; equal to 252 calor...
|department of energy (doe)|
Government agency that regulates water heater efficiencies.
Water connectors that reduce the flow of electricity related to galvanic corrosion, from the house piping to the water heater.
|energy cutoff switch (eco)|
Gas water heater safety device that shuts off the gas supply to the unit if water temperature exceeds 190°f. the eco is a single-use switch and requires complete replacement of the entire thermost...
|energy guide label|
- Yellow label displayed on every water heater that compares that model`s energy use to similar models.
- The federal trade commission (ftc) requires that gas, electric and oil resident...
- A device located in the center of the flue that slows the rising heat and gasses produced by the combustion process, enabling the water to absorb more heat.
- A device to deflect, che...
|gallons per hour (gph) recovery|
The amount of water, in gallons per hour, that a water heater can raise by 90° increase in temperature.
|mixing valve (tempering valve)|
Device that mixes cold water with hot water supplied to general use fixtures.
Gas by-product of combustion that is harmful to the earth`s atmosphere. окись азота;
|temperature and pressure relief valve (t&p valve)|
Safety device that releases hot water when temperatures inside the tank reach 210°f, or when pressure exceeds 150psi.