A.O. Smith Cer-Temp and Shure-Temp System Packages Technical Documents
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
Page 1 of 2
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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