A.O. Smith TC-049-R2 Manuale Utente

 

 

A.O. Smith Water Products Company 

Training Department 

2002 

Ashland City, Tennessee 

4 

 = (GPH X 8.25 X Temp. Rise X 1.0) divided by BTU/H Input 

 

 = GPH X 8.25 X Temp. Rise X 1.0 

 

 = (BTU/H Input X % Eff.) divided by (Temp. Rise X 8.25) 

 of Natural Gas contains about 1000 BTU of heat. 

 

”

 is equal to 100,000 BTU 

 

 of Propane Gas contains about 2500 BTU of heat. 

 

 of Propane gas contains about 91,250 BTU of heat. 

 
One pound

 of Propane gas contains about 21,600 BTU of heat. 

 

One pound of gas pressure is equal to 27.7 inches water column pressure  
 

Inches of Water Column X .036091 = PSI 

 

Inches of Water Column X .073483 = Inches of Mercury (Hg.) 

 
Centimeters

 = Inches X 2.54 

 
MM

 (millimeters) =Inches X 25.4 

 
Meters

 = Inches X .0254 

 
Doubling the diameter of a pipe will increase its flow capacity (approximately) 5.3 times. 

 is constructed of steel. 

 
The inside of the tank is constructed of a 

 bonded to the steel.  This prevents water 

to metal contact and rusting of the tank. 
 
An 

 will be installed within the tank.  The hex-head plug end of the anode is visible on 

the top of the water heater.  This metal rod offers secondary protection of the tank against 
corrosion where the application of glass is not possible (threaded tank openings).  These areas 
will have small areas of water to metal contact. 
 
All water heaters will contain at least 

 (to operate the heater) and 

 (to prevent water temperatures approaching the “steam” level).