ZILMET USA
400 Frenchtown Road - East Greenwich, RI 02818 – phone 401 884 4943
PROFESSIONAL INSTALLATION REQUIRED
rev.
Sep2020
page 2 / 7
INSTRUCTIONS FOR INSTALLATION AND OPERATION OF ZILMET USA EXPANSION TANKS
WARNING: EXCEEDING MAXIMUM PRESSURE AND/OR TEMPERATURE, EITHER SUSTAINED OR DUE TO SUDDEN
INCREASES, IS DANGEROUS AND MAY RESULT IN REDUCED TANK LIFE, PROPERTY DAMAGE, SERIOUS SCALDING
AND/OR BODILY INJURY OR DEATH.
Do not expose the expansion tank to temperatures lower than 14 °F.
DO NOT USE ANTIFREEZE for the production
and storage of potable water. If antifreeze liquid is utilized for a closed hydronic system, you must use all
precautions to avoid dispersion in the environment and possible poisoning in accordance with applicable safety,
occupational, health and environmental codes and standards.
In accordance with local regulations, or following specifications agreed in specific cases between ZILMET and the purchaser, the maximum working
pressure and the maximum working temperature may be lower than those shown on the product label, but may never exceed the same.
Please
always refer to the agreed specifications and/or to the local codes, regulations and standards.
3. WARNINGS
• The system in which the expansion tank is installed must have a pressure-limiting device (pressure relief valve), sized and installed in accordance
with local codes.
• To prevent corrosion due to stray and galvanic currents, the system must be grounded properly in accordance with local electrical and plumbing
codes and standards. If needed, the tank may be provided with dielectric joints after careful evaluation of the characteristics of the installation.
• Other possible causes for pin-holing and corrosion phenomena must be evaluated, including the water’s chemical, physical and thermal
characteristics, the presence of oxygen or melted salts and the use of devices made of different materials (e.g. carbon steel and stainless steel,
carbon steel and copper) within the system. All of these factors must be considered by the manufacturer of the complete system and by the
personnel in charge of installation and maintenance, taking into account all local plumbing, electrical and safety standards and regulations.
• Water quality may affect the lifespan of expansion tanks. Water may require treatment to ensure the correct performance and complete lifespan of
the expansion tank. If installed near the sea, damage from salty air may occur.
• Do not use this tank with the following fluids: (a) chemicals, solvents, petroleum products, acids, bases or any other substance that may be
detrimental to the tanks itself, (b) explosive, extremely flammable, flammable, toxic, or oxidizing fluids.
• Only use this tank with not dangerous fluids and having a vapor pressure greater than 7.25 psi above the normal atmosphere pressure (14.7 psi) at
the maximum working temperature of the expansion tank.
• Do not use this tank with water containing sand, clay, particulates or other solid substance that may damage the tank (particularly the internal
coating) and / or clog its connecting pipes.
• Proper means must be provided in order to prevent air from accumulating in the chamber of the tank (water side) connected to the system.
• The tank and the connected system must be protected against below-freezing temperatures by using proper antifreeze (if for use with non-potable
water, see above) or installing the tank in suitable indoor areas.
• Do not use this expansion tank for any purpose other than the purpose for which it was intended.
• The expansion tank, piping and connections may leak water or other liquids over time. Therefore, the expansion tank must be installed in a suitable
technical room capable of supporting the weight of the vessel filled with water and that must have adequate drainage and protection such that any
leakage will not damage the surrounding area and will not cause scalding injuries.
THE MANUFACTURER SHALL NOT BE RESPONSIBLE FOR
ANY DAMAGE TO PROPERTY, INJURIES OR SCALDING IN CONNECTION WITH THIS EXPANSION TANK.
•
THE MANUFACTURER SHALL NOT BE RESPONSIBLE FOR ANY DAMAGES TO PROPERTY AND / OR INJURIES DUE TO IMPROPER
TRANSPORT, HANDLING, INSTALLATION OPERATION OR MAINTENANCE OF THE TANK.
• As in all plumbing products, bacteria can grow in the expansion tank, especially during times of non use. The local health and safety office must be
consulted regarding any measures the personnel in charge of service and maintenance takes to safely disinfect the plumbing system.
DO NOT USE
ABRASIVE DETERGENTS OR OTHER SUBSTANCES THAT MAY CAUSE DAMAGE TO THE TANK OR CONTAMINATION OF DRINKING
WATER. IF BACTERIA CONTAMINATION IS DETECTED, IT MAY BE ADVISABLE TO REPLACE THE TANK.
• DO NOT drill, open, heat with flames or tamper with the tank in any way.
• NOTE that certain pressure tanks may have an opened upper connection in order to allow the installation of a three
way connection on which a
manometer and a pressure relief valve may be installed. If the three way connection is not installed, or the upper part is
not closed with a suitable
threaded nut, fluid escape may occur from the vessel.
• In the event it is necessary to change the factory pre-charge, specialized technicians should calculate and determine the new pre-charge. The
calculation must ensure that, for all foreseeable working conditions, the specified limits (particularly the maximum working pressure) are never
exceeded and that all local codes and standards are observed.
WARNING -DO NOT OVER-PRESSURIZE- EXPLOSION HAZARD.
The pre-charge should never exceed 50% of the maximum
working pressure. The new value of the pre-charge pressure (user set) must be written in the appropriate space on the label that is
permanently affixed to the tank.
• Make sure that the system layout allows for future maintenance and provides sufficient access and working space around the system to allow for
replacement of components whenever necessary.
• If vibration is likely to occur in the vicinity, proper means must be provided in order to insulate the expansion tank from vibrations (e.g. installation on
a resilient mount).
• The tank can only be disposed of at selective waste collection authorized centers, in accordance with local codes and standards.
CALIFORNIA PROPOSITION 65 WARNING: This product contains chemicals known to the State of California to cause
cancer
and
birth defects
or other reproductive harm. (California Installer / Contractor – California law requires that this notice to be given to
consumer / end user of this product.)