551506 2 Amtrol Extrol SX 40V Expansion Tank Installation Instructions

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EXTROL®

HYDRONIC EXPANSION TANKS FOR NON-POTABLE WATER

INSTALLATION & OPERATION INSTRUCTIONS

Models EX-15 through EX-90
Models SX-30V through SX-160V

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.
USE ONLY IN 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 where air elimination
equipment or barrier tubing is not used.
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 QUALIFIED
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.
CALIFORNIA PROPOSITION 65 WARNING! This product contains a
chemical known by the State of California to cause cancer and to cause
birth defects or other reproductive harm. (California Installer/Contractor
- California law requires that this notice be given to consumer/end user
of this product.) For more information: www.amtrol.com/prop65.html

RUPTURE OR EXPLOSION HAZARD. Do not
expose product to freezing temperatures or
temperatures in excess of 240°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
contractor 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.

PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY

IMPORTANT GENERAL SAFETY INFORMATION ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS.

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.

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

	

Models SX-30V through SX-60V are floor
standing and may not be hung from the piping.

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.

	

Do not install the EXTROL on a dead-end pipe
or wherever air can collect. This can cause
corrosion and possible leakage.

EX Models: Five (5) Year Limited Warranty

Mount tank vertically only. Ensure the piping
can support the entire weight of the tank when
full of water.

Installation

Warranty

SX Models: One (1) Year Limited Warranty

1.	Drain the boiler system or isolate the area where the EXTROL will
be installed.

Visit www.amtrol.com for complete warranty details.

Figure 1.

Figure 2.

Boiler
Type of Radiation
Net Output
Finned Tube
Convectors
Radiators
Baseboard
in 1000’S
Baseboard or
or Unit
Cast Iron
Cast Iron
of BTU/Hr.
Radiant Panel
Heaters
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
Sizing based on: 12 psig Fill; 30 psig Relief Valve; 200°F Average Temperature.

In-Line Models:
EX-15 through EX-90
Air Vent
Air
Purger

System
Supply
Flow-Check
Valve

PressureReducing
Valve

Shut-Off
Valve

Circulator

Backflow
Preventer

Shut-Off
Valve

Water
Supply
System
Return

System
Purge
Relief
Valve

Extrol
Expansion
Tank
Boiler

Type of Radiation and Piping System

Boiler
Finned Tube
Net Output in Baseboard or Radiant
1000’s of BTU
Panels with Series
Loop System
200
250
300
350
400
450
500
550
600
650
700
750
800
850
900
950
1,000
1,100
1,200
1,300
1,400
1,500

SX- 30V
SX- 30V
SX- 30V
SX-30V
SX-30V
SX-40V
SX-40V
SX-40V
SX-40V
SX-60V
SX-60V
SX-60V
SX-60V
SX-60V
SX-60V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-110V
SX-110V

Convectors or
Unit Heaters
with One Pipe
System

SX-30V
SX-30V
SX-30V
SX-30V
SX-40V
SX-40V
SX-40V
SX-60V
SX-60V
SX-60V
SX-60V
SX-60V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-110V
SX-130V
SX-130V

Radiators
or
One Pipe
System

SX-30V
SX-30V
SX-40V
SX-40V
SX-60V
SX-90V
SX-60V
SX-60V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-110V
SX-110V
SX-110V
SX-110V
SX-110V
SX-130V
SX-160V
SX-160V

Cast Iron
Radiators
with Series
Loop System

SX-30V
SX-40V
SX-40V
SX-60V
SX-60V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-90V
SX-110V
SX-110V
SX-110V
SX-110V
SX-110V
SX-110V
SX-130V
SX-130V
SX-160V
SX-160V
(2)SX-110V

Stand Models:
SX-30V through SX-160V
Air Vent

Air
Separator

System
Supply
Flow-Check
Valve

PressureReducing
Valve

Backflow
Preventer
Shut-Off
Valve

Shut-Off
Valve

System
Purge

Water
Supply

System
Return

Circulator

Relief
Valve

Extrol
Expansion
Tank

Boiler

Sizing based on: Average Boiler Water Volume; Average Water Volume;
Fill Pressure 12 psig; Relief Pressure 30 psig

© 2014 AMTROL Inc.	

1400 Division Road, West Warwick, RI USA 02893
T: 800.426.8765 F: 800.293.1519
www.amtrol.com

Mark of the
Originator

Part #: 9015-183 (06/14)



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