Extrol Expansion Tanks Instruction Manual

1400 Division Road, West Warwick, RI 02893 T: 401.884.6300 F: 401.885.2567 www.amtrol.com
INSTALLATION & OPERATION INSTRUCTIONS
EXTROL
®
HYDRONIC DIAPHRAGM EXPANSION TANKS IN-LINE & SX SERIES
Part #: 9015-183 (03/11)
READ CAREFULLY THE PRODUCT
INSTALLATION, OPERATING AND
MAINTENANCE INSTRUCTIONS. 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 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
POSSIBLE INJURY AS WELL AS PROPERTY DAMAGE.
NOTE: Inspect for shipping damage and 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.
FAILURE TO PROPERLY SEAL VALVE CAP
WILL RESULT IN LOSS OF PRECHARGE
CAUSING PRODUCT TO FAIL.
This product, like most products under pressure,
may over time corrode, weaken and burst or
explode, causing serious or fatal personal 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.
EXPLOSION OR RUPTURE HAZARD. 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. 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 for any adjustments at the
time of the initial installation, especially if product is 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.
WARNING: Mount vertically only. Do not mount
on dead-end pipe.
FOR USE IN CLOSED HYDRONIC SYSTEMS ONLY. Do not install on
domestic water systems, or in open heating systems. Corrosion and tank
failure may result. Use a Therm-X-Trol
®
for domestic water systems or a
Radiant EXTROL
®
for radiant heating systems where proper air elimination
equipment or barrier tubing is not used.
Pre-Installation
1. Visually inspect EXTROL
®
for any damage.
2. Adjust pre-charge to equal system fill pressure.
3. Replace and tighten plastic cap on air fitting.
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) (see Figure 1).
3. Once the EXTROL is installed, re-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.
Boiler
Boiler
Return
Boiler
Supply
AMTROL Air Purger
and Float Vent
System
Circulator(s)
In-Line Models
#15 through #90
EXTROL
Boiler
Boiler
Return
Boiler
Supply
AMTROL Air Purger
and Float Vent
System
Circulator(s)
Stand Models
SX-30V and larger
EXTROL
Figure 1.
Maintenance
1. A professional plumber should check the complete heating
system, including the EXTROL, yearly and more frequently as the
system ages.
Operation
1. The EXTROL is installed on the supply-side of the boiler system. Its
sealed-in air pre-charge prevents water from entering the tank until the
system pressure begins to rise.
2. As the water temperature rises, water enters the EXTROL.
3. As the system cools, the diaphragm is forced downward. Water is
expelled from the EXTROL, back into the heating system.
Notes
1. Although the 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 ensure an oxygen-free system.
2. The EXTROL must not be placed overhead in the floor joist space.
When replacing a plain-steel tank, the EXTROL should be relocated per
Figure 1.
3. Do not place the EXTROL on a dead-end pipe. Air can collect in the
EXTROL, causing internal corrosion and possible leakage.
4. Radiant systems with non-barrier tubing or high oxygen content should
use a Radiant EXTROL
®
expansion tank with a plastic liner. See the
EXTROL brochure, or call [phone] for sizing assistance.
* Models #15 through #90 come with a 5 year warranty. All other
EXTROL models come with a 1 year warranty. See reverse side for
warranty information.
* Do not hang models SX-30V through SX-160V. They are floor standing
models only.
PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY
INSTALLER: LEAVE THIS MANUAL WITH THE END USER
MARK OF THE ORIGINATOR