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PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.
SOLAR EXTROL
is designed for use in a closed-loop solar heating
®
systems with a maximum operating temperature of 250° F (Intermittent);
225° F (Continuous).
Pre-Installation
1. Visually inspect for any damage. Ensure expansion tank is sized
properly for the application (Figure 1).
2. With tank empty of fluid, remove plastic cap from air stem (Figure 2).
3. Adjust air precharge to match the system fill pressure. Unit is shipped
at 25 PSIG.
4. Replace cap and tighten snugly, ensuring the cap is flush against the
tank surface.
FAILURE TO PROPERLY SEAL VALVE CAP
WILL RESULT IN LOSS OF PRECHARGE
CAUSING PRODUCT TO FAIL.
Figure 1.
Solar Extrol
System
Average System Operating Temperature
Volume
140° F
160° F
(Gallons)
10
SE-15
SE-15
20
SE-30
SE-30
30
SE-30
SE-30
40
SE-60
SE-60
50
SE-60
SE-60
Sizing based on: 25 PSIG fill; 50 PSIG relief valve; 50% water and propylene glycol max.
For other applications, consult AMTROL Technical Support.
Figure 2.
Precharge Adjustment
Remove cap and
charge to system
fill pressure.
Installation
1. Drain the solar system or isolate the area where the Solar Extrol will
be installed.
2. Install the Solar Extrol on the suction-side of the circulator (Figure 3).
Mount tank vertically only. Ensure the piping can
support the entire weight of the tank when full .
Do not install on a dead-end pipe or wherever air
can collect. This can cause internal corrosion
and possible leakage.
Do not install in floor joist space.
3. Once the Solar Extrol is installed, re-pressurize the system and check
for leaks. Repair as necessary.
4. Restart the system and check for relief valve discharge. If the relief
valve drips, the tank may be improperly charged or undersized.
5. The Solar Extrol is now operational and will absorb expanded fluid
during system operation.
© 2018 AMTROL Inc.
IMPORTANT GENERAL SAFETY INFORMATION -
Sizing
®
180° F
200° F
220° F
SE-15
SE-15
SE-15
SE-30
SE-30
SE-30
SE-60
SE-60
SE-60
SE-60
Contact AMTROL
Replace cap and
tighten until flush
with tank.
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765
www.amtrol.com
Figure 3.
Typical Installation
Collectors
Operation
1. The Solar Extrol is installed on the supply-side of the solar system. Its
sealed-in air pre-charge prevents fluid from entering the tank until the
system pressure begins to rise.
2. As the water temperature rises, fluid enters the Solar Extrol.
3. As the system cools, the diaphragm is forced downward. Fluid is
expelled from the Solar Extrol, back into the system.
NOTE:
Although the Solar Extrol 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 reduce entrained air.
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 fluid, and be sure to maintain the proper
precharge whenever the tank is inspected. Monitor the tip of the service
indicator cap for discoloration (Figure 4) in addition to regular product
inspection. Contact the installer or a plumbing professional if indicator
cap is discolored; tank replacement required. Do not rely on cap as sole
indication of tank condition.
Figure 4.
InSight
Service Indicator Cap (Inline models only)
™
Normal
Operation
Clear / White
Warranty
SE Models: Five (5) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
F: 800.293.1519
Pump
Solar
Station
Solar
EXTROL
InSight Cap
Fluid
Replace
Tank
Discolored
MARK OF THE
ORIGINATOR
Part #: 9015-839 (01/18)
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