AMTROL EX-15PRO Expansion Tanks for Hydronic Heating and Chilled Water Systems Instruction Manual
- June 13, 2024
- AMTROL
Table of Contents
AMTROL EX-15PRO Expansion Tanks for Hydronic Heating and Chilled Water
Systems
Product Information
The Expansion Tanks for Hydronic Heating & Chilled Water Systems are designed
for use in heating and chilled water systems.
They are available in three models: EX-15PRO, EX-30PRO, and EX-60PRO. These
tanks are used to accommodate the expansion and contraction of water in the
system, ensuring optimal performance and preventing damage to the system.
Safety Information
Inspect the product for shipping damage upon receipt. If any damage is
present, notify the freight carrier or store where purchased immediately. To
avoid personal injury and property damage, if the product appears to be
malfunctioning or shows signs of corrosion, call a qualified professional
immediately. It is important to read and follow the installation, operating,
and maintenance manual carefully to reduce the risk of injury or property
damage. The product must be installed by a licensed professional and all
applicable local and state codes and regulations must be followed.
Water Quality
The water quality can significantly influence the life of the product. It is
recommended to test for corrosive elements, acidity, total solids, and other
relevant contaminants, including chlorine. Treat your water appropriately to
ensure satisfactory performance and prevent premature failure.
Chemical Exposure Warning
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, visit
www.P65Warnings.ca.gov.
Product Usage Instructions
- Pre-Installation:
- Visually inspect the expansion tank for any damage.
- Ensure the expansion tank is sized properly for the intended application. Refer to Figure 1 for boiler application and Figure 2 for radiant application.
- With the tank empty of water, remove the plastic cap from the air stem.
- Check the precharge pressure and adjust if necessary. Charge the tank with air to match the boiler fill valve setting.
- Replace the cap and tighten it snugly, ensuring the cap is flush against the tank surface. Failure to properly seal the cap will result in a loss of precharge, causing the product to fail.
For more detailed instructions and additional safety alerts,please refer to the product installation, operating, and maintenance manual available at www.amtrol.com. Helpful videos can also be found on the website for further assistance.
EXTROL® PRO
EXPANSION TANKS FOR HYDRONIC HEATING & CHILLED WATER SYSTEMS INSTALLATION &
OPERATION INSTRUCTIONS
Models EX-15PRO, EX-30PRO, EX-60PRO
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 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.
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.
WARNING
- USE ONLY IN RESIDENTIAL CLOSED HYDRONIC AND RADIANT 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.
- 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.
EXTROL PRO® is designed for closed, low temperature systems with a maximum operating temperature of 200° F. The product can be used in glycol applications and features a plastic liner that is compatible with barrier and non-barrier tubing.
Pre-Installation
- Visually inspect for any damage. Ensure expansion tank is sized properly for the intended application (Figure 1: Boiler Application, Figure 2: Radiant Application).
- With tank empty of water, remove plastic cap from air stem (Figure 3).
- Check precharge pressure and adjust if necessary, charging with air to match boiler fill valve setting.
- Replace cap and tighten snugly, ensuring the cap is flush against the tank surface.
WARNING
FAILURE TO PROPERLY SEAL CAP WILL RESULT IN LOSS OF PRECHARGE CAUSING PRODUCT TO FAIL.
Figure 1. Boiler Application
Boiler Net Output in 1000’S
of BTU/Hr.
| | Type of| Radiation|
---|---|---|---|---
Finned Tube Baseboard or Radiant Panel| Convectors or Unit Heaters| Radiators
Cast Iron| Baseboard Cast Iron
25| EX-15PRO| EX-15PRO| EX-15PRO| EX-15PRO
50| EX-15PRO| EX-15PRO| EX-30PRO| EX-30PRO
75| EX-30PRO| EX-30PRO| EX-60PRO| EX-60PRO
100| EX-30PRO| EX-60PRO| EX-60PRO| EX-60PRO
125| EX-60PRO| EX-60PRO| |
150| EX-60PRO| EX-60PRO| |
175| EX-60PRO| EX-60PRO| |
200| EX-60PRO| | |
250| | | |
300| | | | *
Sizing based on: 15 psig Fill; 30 psig Relief Valve; 180°F Average Temperature. * See Extrol EX and SX Sizing.
Figure 2. Radiant Application
Feet of Tubing| | Nomin| al Pex Tubing| Size|
---|---|---|---|---|---
3/8″| 1/2″| 5/8″| 3/4″| 1″
1,000| EX-15PRO| EX-15PRO| EX-15PRO| EX-15PRO| EX-15PRO
5,000| EX-15PRO| EX-15PRO| EX-15PRO| EX-30PRO| EX-60PRO
7,500| EX-15PRO| EX-15PRO| EX-30PRO| EX-60PRO|
10,000| EX-15PRO| EX-30PRO| EX-60PRO| EX-60PRO|
14,000| EX-15PRO| EX-30PRO| EX-60PRO| |
18,000| EX-30PRO| EX-60PRO| | |
22,000| EX-30PRO| EX-60PRO| | |
30,000| EX-60PRO| | | |
Sizing based on: 15 PSIG fill; 30 PSIG relief valve; 120° F average
temperature.
System filled with water. For glycol and solar applications, consult AMTROL
Technical Support. * Contact AMTROL Technical Support.
Figure 3.
Precharge Adjustment
Installation
-
Drain the boiler system or isolate the area where the EXTROL PRO will be installed.
-
Install the EXTROL PRO on the supply side of the boiler, on the suction side of the heating circulator(s) (Figure 4).
WARNING- Mount tank vertically in downward position only. Ensure the piping can support the entire weight of the tank when full of water.
- Do not install the EXTROL PRO on a dead-end pipe or wherever air can collect. This can cause corrosion and possible leakage.
-
Pressurize the system and check for leaks. Repair as necessary.
-
Restart the boiler system and check for relief valve discharge. If the relief valve drips, the tank may be improperly charged or undersized.
NOTE: Although the EXTROL-PRO does not have to be installed at the base of an air purger, this installation is recommended to reduce air in the system and provide a compact installation. Some method of air elimination is required to ensure an oxygen-free system.
Figure 4.
Maintenance
A professional plumber should check the complete system, including the expansion tank, yearly and more frequently as the system ages. Checking the precharge allows a small quantity of air to escape and can result in an insufficient air charge. Always check the precharge while the tank is isolated and empty of water, and be sure to maintain the proper precharge whenever the tank is inspected. Monitor the tip of the inspection cap for discoloration (Figure 5) in addition to regular product inspection. Contact the installer or a plumbing professional if inspection cap is discolored; tank replacement required. Do not rely on cap as sole indication of tank condition.
Figure 5.
Warranty
EX-PRO Models: Seven (7) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 www.amtrol.com
© 2022 Worthington Industries Inc.
One or more features of this product are covered by U.S. patents, visit
www.amtrol.com/patents for more information.