Amtrol EXTROL PRO Series Installation instructions

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 INSTALL-
ATION, 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
EXPANSION TANKS FOR HYDRONIC HEATING & CHILLED WATER SYSTEMS
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 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.
Models EX-15PRO, EX-30PRO, EX-60PRO

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
1. Visually inspect for any damage. Ensure expansion tank is sized
properly for the intended application (Figure 1: Boiler Application,
Figure 2: Radiant Application).
2. With tank empty of water, remove plastic cap from air stem (Figure 3).
3. Check precharge pressure and adjust if necessary, charging with air
to match boiler fill valve setting.
4. Replace cap and tighten snugly, ensuring the cap is flush against the
tank surface.
Installation
1. Drain the boiler system or isolate the area where the EXTROL PRO will
be installed.
2. Install the EXTROL PRO on the supply side of the boiler, on the
suction-side of the heating circulator(s) (Figure 4).
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.
3. Pressurize the system and check for leaks. Repair as necessary.
4. 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 2. Radiant Application
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY FOR
IMPORTANT GENERAL SAFETY INFORMATION AND ADDITIONAL SPECIFIC SAFETY ALERTS.
VISIT www.amtrol.com TO VIEW HELPFUL VIDEOS.
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.
System
Supply
Flow-Check
Valve Circulator Air Purger
Air Vent
EXTROL Fill Valve Assembly
Boiler
System
Return
Inspection
Cap
Relief
Valve
Drain Valve
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.
Warranty
EX-PRO Models: Seven (7) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
Figure 5.
Clear / White
Normal
Operation
Discolored
Replace
Tank
InSight®Service Indicator Cap
© 2022 Worthington Industries Inc. Part #: 9015-968 (02/22)
One or more features of this product are covered by U.S. patents, visit www.amtrol.com/patents for more information.
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 www.amtrol.com
Figure 1. Boiler Application
Sizing based on: 15 psig Fill; 30 psig Relief Valve; 180°F Average Temperature.
* See Extrol EX and SX Sizing.
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 * * * *
Feet of
Tubing
Nominal 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 * * * *
FAILURE TO PROPERLY SEAL CAP WILL
RESULT IN LOSS OF PRECHARGE CAUSING
PRODUCT TO FAIL.
Figure 3.
Remove cap and
charge to system
fill pressure.
Replace cap and
tighten until flush
with tank.
Precharge Adjustment