© 2016 AMTROL Inc.
Part #: 9015-183 (07/16)
Mark of the
Originator
1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 F: 800.293.1519
www.amtrol.com
Pre-Installation
1 Visually inspect for any damage. Ensure expansion tank is sized
properly for application (Figure 1).
2. Remove plastic cap from air valve.
3. With tank empty of water, adjust air precharge to match system fill
pressure.
4. Replace and tighten plastic cap on air valve.
FAILURE TO PROPERLY SEAL VALVE CAP
WILL RESULT IN LOSS OF PRECHARGE
CAUSING PRODUCT TO FAIL.
Mount tank vertically in downward position only.
Ensure the piping can support the entire weight
of the tank when full of water.
Models SX-30V through SX-160V are floor
standing and may not be hung from the piping.
Do not install the EXTROL on a dead-end pipe
or wherever air can collect. This can cause
corrosion and possible leakage.
Installation
1. Drain the boiler system or isolate the area where the EXTROL will
be installed.
2. Install the EXTROL on the supply side of the boiler, on the suction-side
of the heating circulator(s) (Figure 2).
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.
5. The EXTROL is now operational and will absorb expanded water
during boiler operation.
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.
Warranty
EX Models: Five (5) Year Limited Warranty
SX Models: One (1) Year Limited Warranty
Visit www.amtrol.com for complete warranty details.
Figure 1.
Figure 2.
Boiler
Net Output in
1000’s of BTU
Type of Radiation and Piping System
Finned Tube
Baseboard or Radiant
Panels with Series
Loop System
Convectors or
Unit Heaters
with One Pipe
System
Radiators
or
One Pipe
System
Cast Iron
Radiators
with Series
Loop System
200
SX- 30V
SX-30V
SX-30V
SX-30V
250
SX- 30V
SX-30V
SX-30V
SX-40V
300
SX- 30V
SX-30V
SX-40V
SX-40V
350
SX-30V
SX-30V
SX-40V
SX-60V
400
SX-30V
SX-40V
SX-60V
SX-60V
450
SX-40V
SX-40V
SX-90V
SX-90V
500
SX-40V
SX-40V
SX-60V
SX-90V
550
SX-40V
SX-60V
SX-60V
SX-90V
600
SX-40V
SX-60V
SX-90V
SX-90V
650
SX-60V
SX-60V
SX-90V
SX-90V
700
SX-60V
SX-60V
SX-90V
SX-90V
750
SX-60V
SX-60V
SX-90V
SX-110V
800
SX-60V
SX-90V
SX-90V
SX-110V
850
SX-60V
SX-90V
SX-90V
SX-110V
900
SX-60V
SX-90V
SX-110V
SX-110V
950
SX-90V
SX-90V
SX-110V
SX-110V
1,000
SX-90V
SX-90V
SX-110V
SX-110V
1,100
SX-90V
SX-90V
SX-110V
SX-130V
1,200
SX-90V
SX-90V
SX-110V
SX-130V
1,300
SX-90V
SX-110V
SX-130V
SX-160V
1,400
SX-110V
SX-130V
SX-160V
SX-160V
1,500
SX-110V
SX-130V
SX-160V
(2)SX-110V
Sizing based on: Average Boiler Water Volume; Average Water Volume;
Fill Pressure 12 psig; Relief Pressure 30 psig
Air
Separator
System
Supply
Flow-Check
Valve
Circulator
Air Vent
Extrol
Expansion
Tank
Relief
Valve
System
Return
Shut-Off
Valve
Water
Supply
Pressure-
Reducing
Valve
Shut-Off
Valve
System
Purge
Backflow
Preventer
Boiler
System
Supply
Flow-Check
Valve
Circulator
Air
Purger
Air Vent
Extrol
Expansion
Tank
Relief
Valve
Boiler
System
Return
Shut-Off
Valve
Water
Supply
Pressure-
Reducing
Valve
Shut-Off
Valve
System
Purge
Backflow
Preventer
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-15
EX-15
EX-15
EX-15
50
EX-15
EX-15
EX-30
EX-30
75
EX-30
EX-30
EX-30
EX-60
100
EX-30
EX-30
EX-60
EX-60
125
EX-30
EX-60
EX-60
EX-90
150
EX-30
EX-60
EX-90
EX-90
175
EX-60
EX-60
SX-30V
SX-30V
200
EX-60
EX-60
SX-30V
SX-30V
250
EX-60
EX-90
SX-30V
SX-40V
300
EX-90
SX-30V
SX-30V
SX-40V
350
SX-30V
SX-30V
SX-40V
SX-60V
400
SX-30V
SX-40V
SX-40V
SX-60V
Sizi
ng based on: 12 psig Fill; 30 psig Relief Valve; 200°F Average Temperature.
In-Line Models:
EX-15 through EX-90
Stand Models:
SX-30V through SX-160V
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY FOR
IMPORTANT GENERAL SAFETY INFORMATION AND ADDITIONAL SPECIFIC SAFETY ALERTS.
VISIT www.amtrol.com TO VIEW HELPFUL VIDEOS
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