A.O. Smith Cer-Temp and Shure-Temp System Packages Technical Documents

A.O. Smith Water Heater Technical Documents - Cer-Temp and Shure-Temp System Packages.
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Cer-Temp® System Pump 

Packages - Low Lead

Take all the uncertainty out of designing your A. O. Smith Cer-Temp® 
hot water supply system with the following system pump packages. Kits are certified by 
CSA International as complying with all Federal and State low lead requirements. 

Each package contains a properly sized circulating pump and all the related controls 
and safety devices required to complete a working A. O. Smith Cer-Temp® system. The 
packages do not contain the water heater, storage tanks, piping or fittings.

 A. O. Smith Corporation • 500 Tennessee Waltz Parkway • Ashland City, TN 37015 • 800-527-1953 Toll-free USA

 

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www.hotwater.com 

     

  Revised October 2014       

AOSDG25651

CIRCULATING PUMP

  Sized for 50 equivalent feet  

of pipe

  115 volt AC

  Single Phase

  Built in overload protection

TANK TEMPERATURE CONTROL

  Open-on-rise switch action

  Immersion well type

  Fixed 5°F (3°C) differential

  Adjustable from 100°F  

to 180°F (38°C to 82°C)

TEMPERATURE AND PRESSURE 

RELIEF VALVE

  125 psi setting

  Temperature relief setting of  

210°F (99°C)

  Automatic reset

SAFETY FLOW SWITCH

  Prevents burner firing under low  

water flow conditions

  Single pole-double throw  

switch contacts

  Adjustable sensitivity

  Rated at 150 psig and 250°F (121°C)

  Properly sized reducing tee furnished

THERMOMETERS

  Straight and angle thermometers  

allow measurement of heater  
inlet/outlet and tank temperatures  
for proper system adjustment  
and maintenance

  Baked enamel aluminum case

  Range of 40°F to 260°F (4°C to 127°C)  

1/2˝ NPT brass well

  2˝ nominal well length

JUNCTION BOX ASSEMBLY

  4˝ x 4˝ x 1 1/2˝ deep metal  

box with cover

  Terminal strip and wiring  

diagram included

AOSDG25651 R October 2014 CerTemp Pump Packages Spec.indd   1

10/27/14   10:42 PM

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