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READ CAREFULLY THE PRODUCT 

INSTALLATION, OPERATING AND 

MAINTENANCE MANUAL.  FAILURE TO FOLLOW THE 

INSTRUCTIONS AND WARNINGS IN THE MANUAL MAY 

RESULT IN SERIOUS OR FATAL INJURY AND/OR PROPERTY 

DAMAGE, AND WILL VOID THE PRODUCT WARRANTY.  

THIS PRODUCT MUST BE INSTALLED BY A QUALIFIED 

PROFESSIONAL.  FOLLOW ALL APPLICABLE LOCAL AND 

STATE CODES AND REGULATIONS, IN THE ABSENCE OF 

SUCH CODES, FOLLOW THE CURRENT EDITIONS OF THE 

NATIONAL PLUMBING CODE AND NATIONAL ELECTRIC 

CODE, AS APPLICABLE.

This product must be installed by a qualified 

professional.

EXPLOSION HAZARD.

 Failure to follow the 

instructions in the accompanying product 

manual can cause a rupture or explosion; possibly causing 

serious or fatal injury, leaking or flooding and/or property damage.

Use only with potable water system.  Do not 

operate in a setting with freezing temperatures 

or where the temperature can exceed 200°F and do not exceed 

the maximum working pressure specified for this Product in the 

Manual.  Mount vertically only.

This Product, like most Products under 

pressure, may over time corrode. weaken and 

burst or explode, causing serious or fatal injury, leaking or 

flooding and/or property damage.  To minimize risk, a licensed 

professional must install and periodically inspect and service the 

Product.  A drip pan connected to an adequate drain must be 

installed if leaking or flooding could cause property damage.  Do 

not locate in an area where leakage of the tank or connections 

could cause property damage to the area adjacent to the 

appliance or to lower floors of the structure.

Chlorine & Aggressive Water:

 The water 

quality can significantly influence the life of this 

Product.  You should test for corrosive elements, acidity, total 

solids and other relevant contaminants, including chlorine and 

treat your water appropriately to insure satisfactory performance 

and prevent premature failure.

CALIFORNIA PROPOSITION 65 WARNING:

 

This product contains a chemical known by the 

State of California to cause cancer and to cause birth defects or 

other reproductive harm. (California Installer/Contractor - 

California law requires that this notice be given to consumer/end 

user of this product.) For more information:  www.amtrol.com/

prop65/htm.

THIS IS THE SAFETY ALERT SYMBOL.  IT IS 

USED TO ALERT YOU TO POTENTIAL PERSONAL 

INJURY AND OTHER HAZARDS.  OBEY ALL 

SAFETY MESSAGES THAT FOLLOW THIS SYMBOL 

TO REDUCE THE RISK OF PERSONAL INJURY AS WELL AS 

PROPERTY DAMAGE.

EXPLOSION OR RUPTURE HAZARD

 A relief 

valve must be installed to prevent pressure in 

excess of local code requirement or maximum working pressure 

designated in the Product Manual, whichever is less.  Do not 

expose Product to freezing temperatures or temperatures in 

excess of 200° F.  Do not adjust the pre-charge or re-pressure 

this Product except for any adjustments required at the time of 

initial installation, especially if Product corroded, damaged or with 

diminished integrity.  Adjustments to pre-charge must be done at 

ambient temperature only.  Failure to properly size the Product or 

follow these instructions may result in excessive strain on the 

system and lead to Product failure, serious or fatal personal 

injury, leakage and/or property damage.

NOTE: 

 Inspect for shipping damage and notify freight carrier or 

store where purchased immediately if damage is present.  To 

avoid risk of personal injury and property damage, if the product 

appears to be malfunctioning or shows signs of corrosion, call a 

qualified professional immediately.  Current copies of the Product 

manual can be viewed at www.amtrol.com.  Use proper safety 

equipment when installing.

FAILURE TO PROPERLY SEAL WILL 

RESULT IN LOSS OF PRECHARGE 

CAUSING PRODUCT TO FAIL.

GENERAL SAFETY INFORMATION - 

ADDITIONAL SPECIFIC SAFETY 

ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY

MARK OF THE ORIGINATOR

*  All ST-C Series models come with a 1 year warranty.  See reverse side for warranty information.

1400 Division Road, West Warwick, RI 02893    T: 401.884.6300    F: 401.885.2567    www.amtrol.com

INSTALLATION, OPERATION & SERVICE INSTRUCTIONS

THERM-X-TROL

®

THERMAL EXPANSION ABSOBERS (ST-5-C THROUGH ST-210V-C)

Part #: 9017-091  (04/11)

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