background image

USE ONLY IN RESIDENTIAL CLOSED 

HYDRONIC SYSTEMS.

 Do not install on domestic 

water systems, or in open heating systems. Corrosion and tank failure 

may result. Use a Therm-X-Trol

®

 or Therm-X-Span

®

 for domestic water 

systems. Use a Radiant EXTROL

®

 for radiant heating systems.

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 LICENSED 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, 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 leaking could cause 

property damage to the area adjacent to the appliance or to lower floors 

of the structure.

RUPTURE OR EXPLOSION HAZARD.

 Do not 

expose product to freezing temperatures or 

temperatures in excess of 200° F.  Do not adjust the pre-charge or 

re-charge  this Product except during installation or regular inspection. 

Replace the Product and do not adjust the pre-charge if 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 may lead to Product failure, serious or fatal personal injury, leakage, 

and/or property damage.

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. 

At least once every 3 years or if discharge is present, a licensed 

professional should inspect the pressure relief valve and replace if 

corrosion is evident or the valve does not function. 

FAILURE TO 

INSPECT THIS VALVE AS DIRECTED COULD RESULT IN UNSAFE 

PRESSURE BUILD-UP WHICH CAN RESULT IN PRODUCT FAILURE, 

SERIOUS INJURY OR DEATH AND/OR SEVERE PROPERTY 

DAMAGE AND VOID THE PRODUCT WARRANTY.

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.

This product can expose you to chemicals including 

lead, which is known to the State of California to 

cause cancer and birth defects or other reproductive harm. For more 

information go to www.P65Warnings.ca.gov. 

RADIANT EXTROL

® 

RADIANT HEATING SYSTEM EXPANSION TANKS

INSTALLATION & OPERATION INSTRUCTIONS

NOTE:

  Inspect for shipping damage. 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, shows signs of corrosion, or if indicator cap is discolored, call a licensed professional 

immediately.  Current copies of the product manual can be viewed at www.amtrol.com.  Use proper safety equipment when installing.

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.

Models RX-15, RX-30, RX-60

For Use In Closed Radiant Heating Systems Only

Reviews: