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















 

 





H

YDRONIC 



 



  



 

This  product  contains  a  chemical  known 

to

  the  State  of

 

California to cause cancer and birth defects or other reproductive harm.

(California installer-California law requires that this notice be given to the

 

consumer/end user of this product.) For more information, contact the

 

manufacturer at www.flexconind.com.

These instructions and warnings are subject to periodic updates on the

 

Flexcon website 

www.flexconind.com

 

and should be regularly reviewed

 

by the consumer for important safety and instruction updates.







HTX/SXHT

  

 

 

 

 

    

8



Rev. 6.18

     

        

     

     

      

If the Product is not correctly installed, operated, repaired or maintained as described in the Manual provided with the Product.

To any failure or malfunction resulting from (i) misuse or abuse, (ii) improper or negligent handling, shipping (by anyone other than Flexcon),

storage, use or operation, or (iii) damages to the tank caused by lightning, floods, fire, freezing or any other environmental condition.

To damages caused by any unauthorized alteration to the Product, or any attempt to repair tank leaks or parts.

To any failure or problem resulting from the use of the Product for any purpose other than those specified in the Manual.

If the Product is used anywhere except the United States, its territories or possessions, or Canada.

To labor costs, shipping charges, service charges, delivery expenses, administrative fees or any costs incurred in removing or reinstalling the Products.

To any claims submitted to Flexcon or a Flexcon authorized distributor or dealer more than 30 days after expiration of the applicable warranty time

period described in this Warranty;

To any repair or replacement costs not authorized in advance by Flexcon.

 

- All implied warranties including the implied warranties of merchantability and fitness for a particular purpose are 

specifically disclaimed.



- The remedies contained in this warranty are the purchaser’s or first user’s exclusive remedies.  In no circumstances

will Flexcon be liable for more than, and purchaser-first user’s remedies shall not exceed, the price paid for the Product. In no case shall Flexcon

be liable for any special, indirect, incidental or consequential damages, whether resulting from non-delivery or from the use, misuse, or inability to

use the Product or from defects in the product or from Flexcon’s own negligence or other tort. These exclusions apply regardless of whether such

damages are sought for breach of warranty, breach of contract, negligence, strict liability, in tort or under any other legal theory.  Excluded damages

include, but are not limited to, inconvenience, loss or damage to property, mold, loss of profits, loss of savings or revenue, loss of use of the 

Products or any associated equipment, facilities, buildings or services, downtime, and the claims of third parties including customers.



– You must notify the authorized Flexcon distributor or dealer who sold you

the Product within 30 days of the event leading to the Warranty claim.  Any covered Warranty service must be authorized by the Flexcon distributor

or dealer which sold you the Product.  If you do not receive a prompt response, call Flexcon directly at 781.986.2424.  Notice of a Warranty claim

should be submitted within 60 days of the event leading to the claim by the authorized distributor/dealer to Flexcon at the following address:

Flexcon Industries, Warranty Claim Dept., P.O. Box 782, Randolph, MA 02368

Before Flexcon determines to provide any replacement part or Product, it may, as a pre-condition to making such a determination, require that the

warranty claimant ship the Product, postage prepaid, to an authorized Flexcon distributor, or to Flexcon, and provide proof of purchase evidenced

by the original sales receipt.

  

- In case of replacement of a Product or any component part, Flexcon reserves the right to make changes in

the design, construction, or material of the substitute components or products, which shall be subject to all of the terms and limitations of this 

Warranty, except that the applicable warranty periods shall be reduced by the amount of time the warranty claimant owned the product prior to 

submitting notification or the warranty claim.

Owners Record Keep for later use

Serial number (see tank data label at bottom of tank): __________________________________________________________________________

Model (see tank data label at bottom of tank): _______________________________________________________________________________

Date Installed:  _________________________________________________________________________________________________________ 

Installer Name:  _________________________________________________________________________________________________________ 

Telephone number:  ____________________________________________________________________________________________________ 

Retain copy of cancelled check and installation receipt

    

 

DESCRIPTION

Flexcon hydronic expansion tanks are designed to accommodate 

the natural expansion of water in a hydronic (forced hot water) 

heating system. When water heats up, it expands and in a closed 

system can cause unsafe operating pressures and nusiance 

operation of the boiler relief valve. These tanks are not to be used in 

open or potable (domestic) water systems. The air and water is 

permanently separated in a Flexcon tank by a 100% butyl rubber 

diaphragm.



8



Rev. 6.18





 





H

YDRONIC 



 



 



 



 



 



 





Important: 

Read carefully the installation,operating and maintenance instructions manual ("Manual") to avoid serious personal injury and/or 

property damage and to ensure safe use and proper care of this product.

Warranty: 

Warranty is extended to all purchasers of the new product. The warranty is non-transferable. Flexcon warrants to the purchaser or 

first user of the new product that at the time of manufacture, the product is free from defect in material or workmanship for (5) years from the date 

of manufacture. Any warranty claim must be made within (5) years unless another time period is set forth in the manual, measured from the date 

of manufacture. 

In the event of a breach of the foregoing warranty and upon proper and timely notification to Flexcon, Flexcon will at its option either: 

make repairs to correct and defect in material or workmanship, or supply and ship either new or used replacement parts or products. Flexcon will 

not accept any claims for, nor will Flexcon be responsible for, any other costs including labor

Exclusions: 

This warranty does not cover any failure or problem unless it was caused by a defect in material or workmanship. In addition, 

this warranty shall not apply:



This product 

must be in-

stalled by a 

Qualified Professional

 fol-

lowing all local and national plumbing and 

electrical  codes.  Read  and  understand 

fully  the  instructions  included  here  and 

those  on  the  Flexcon  website  which  are 

updated on a regular basis. This product 

must be inspected annually by a qualified 

professional for any signs of corrosion or 

leakage  and  replaced  immediately  if 

these signs are present. Failure to follow 

these  instructions  may  result  in  serious 

injury,  death,  and/or  property  damage 

and will void the product warranty.

EXPLOSION HAZARD

 This expansion tank 

is designed for water storage at a maximum

pressure of 100 PSI and a maximum temperature of 240 F. A properly 

sized  pressure  relief  valve  set  to  local  code  must  be  installed  on  the 

system.  This  tank  is  shipped  with  a  pre-charge  of  12  PSI  and  any 

adjustment to the pre-charge must be done prior to installation and at 

ambient  temperature.  Do  not  adjust  the  pre-charge  of  this  tank  if  the 

product  is  corroded  or  damaged  or  shows  any  signs  of  diminished 

integrity. Do not adjust the pre-charge of the expansion tank with the 

system under pressure. Failure to follow these instructions is UNSAFE 

and may result in serious injury, death, and/or property damage.

This expansion tank and the associated 

piping  will  in  time  leak.  This  tank  must  be  installed  in  a  location  that 

allows for easy access, visual inspection and where water leakage will  

not  cause  property  damage.  Installation  must  include  a  means  for 

adequate drainage. This tank must not be installed in a location that is 

subject to freezing. This tank must be installed in the vertical position. 

The  manufacturer  of  this  product  is  not  liable  or  responsible  for  any 

water  damage  associciated  with  the  installation  and/or  failure  of  this 

product. Failure to follow these instructions will void the warranty and 

may result in serious injury, death, and/or property damage.

This tank is intended for use on closed

water systems only and any other use may

be  dangerous  and  void  the  warranty.  This  products  performance  and 

lifespan  can  be  significantly  and  adversely  impacted  by  aggressive 

water conditions. A water test should be conducted at regular, periodic 

intervals  specifically  looking  for  corrosive  water,  acids  and  other 

relevant  water  contaminants  which,  if  present,  must  be  treated 

immediately  and  appropriately.  The  system  piping  must  be  properly 

grounded  to  earth  and  a  di-electric  union  is  recommended  in  the 

installation.  Failure  to  follow  these  instructions  may  result  in  serious 

injury, death, and/or property damage.

THIS IS THE SAFETY ALERT SYMBOL. IT IS USED 

TO ALERT YOU TO POTENTIAL PERSONAL 

INJURY  HAZARDS. OBEY ALL SAFETY 

MESSAGES  THAT FOLLOW THIS SYMBOL TO 

AVOID POSSIBLE  INJURY OR DEATH.

WARNING

INDICATES A POTENTIALLY HAZARDOUS 

SITUATION WHICH, IF NOT AVOIDED, COULD 

RESULT IN SERIOUS INJURY, DEATH, AND/OR 

SIGNIFICANT 

PROPERTY DAMAGE.

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