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Instruction Manual for AMTROL models including: ST-5, ST-210V, T-5, T-12, ST-5 Thermal Expansion Tanks, ST-5, Thermal Expansion Tanks, Expansion Tanks, Tanks
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DocumentDocumentTHERMAL EXPANSION TANKS FOR POTABLE WATER INSTALLATION & OPERATION INSTRUCTIONS Models ST-5 through ST-210V Models T-5 through T-12 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. 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 WITH RESIDENTIAL POTABLE WATER SYSTEMS. Do not operate in a setting with freezing temperatures or where the temperature can exceed 200°F and do not exceed the maximum working pressure specified for this Product. Do not use on a system with ASME-rated vessels. 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 LICENSED 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. RUPTURE OR EXPLOSION HAZARD. Do not expose Product to freezing temperatures or temperatures in excess of 200°F. Do not adjust the pre-charge or re-pressure this Product except during installation or regular inspection. Replace the Product and do not adjust the precharge 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 professional should inspect the temperature and 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 TEMPERATURE OR 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. This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov. PLEASE READ THE FOLLOWING INSTRUCTIONS CAREFULLY IMPORTANT GENERAL SAFETY INFORMATION ADDITIONAL SPECIFIC SAFETY ALERTS APPEAR IN THE FOLLOWING INSTRUCTIONS. Pre-Installation 1 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 cold water supply pressure. 4. Replace and tighten plastic cap on air valve. 5. ST-5, ST-8, ST-12 only: Insert TurbulatorTM into connector. FAILURE TO PROPERLY SEAL VALVE CAP WILL RESULT IN LOSS OF PRECHARGE CAUSING PRODUCT TO FAIL. Installation 1. Install the expansion tank on the cold water supply line to the water heater at a point between the water heater and backflow preventer or other one-way device (Figure 2). Mount vertically in downward position only. Ensure that tank is supported properly to hold the entire weight of the tank when full of water. 5. The water heater and expansion tank will now be operational. The expansion tank will control pressure increases caused by thermal expansion to a level below the water heater relief valve setting. Maintenance A licensed professional 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. Monitor the tip of the indicator cap for discoloration (Figure 3) in addition to regular product inspection. Contact the installer or a plumbing professional if indicator cap is discolored; tank replacement is required. Do not rely on indicator cap as sole means of determining of tank condition. Figure 3. InSightTM Service Indicator Cap (ST-5, ST-8 and ST-12 Inline models only) Models ST-25V through ST-210V are floor standing and may not be hung from the piping. 2. Once the expansion tank is installed, check the cold water supply line for any leakage. Make repairs if necessary. Normal Operation Replace Tank 3. Before the initial firing of the water heater, open any hot water fixture and draw water until all air is removed from the system. Turn the water heater temperature control to desired ending temperature (see water heater instructions). Do not set temperature higher than the expansion tank maximum. Clear / White Discolored (Patent Pending) 4. To relieve initial thermal expansion, momentarily open a hot water faucet. Continue until water heater aquastat temperature is satisfied. Once heater is at its operating range, no further bleeding of expanded water is required. Warranty ST-5 through ST-12 Models: Seven (7) Year Limited Warranty ST-25V through ST-210V Models: One (1) Year Limited Warranty T-5 through T-12 Models: One (1) Year Limited Warranty Figure 1. Visit www.amtrol.com for complete warranty details. Expansion Tank Volume (Gal.) Maximum Temperature Setting 140°F Expansion Tank Volume (Gal.) Maximum Temperature Setting 160°F Expansion Tank Volume (Gal.) Maximum Temperature Setting 180°F Water Heater Static Supply Pressure (psig) Size (Gals.) 40 60 80 Water Heater Static Supply Pressure (psig) Size (Gals.) 40 60 80 Water Heater Static Supply Pressure (psig) Size (Gals.) 40 60 80 40 2.0 2.0 2.0 40 2.0 2.0 3.2 40 3.2 3.2 3.2 50 2.0 2.0 2.0 50 2.0 3.2 3.2 50 3.2 3.2 4.4 60 3.2 3.2 3.2 60 3.2 3.2 4.4 60 3.2 4.4 10.3 80 3.2 3.2 4.4 80 3.2 4.4 10.3 80 4.4 10.3 10.3 120 4.4 4.4 10.3 120 4.4 10.3 10.3 120 10.3 10.3 10.3 Residential sizing based on: 40°F incoming water temperature; 150 psi T&P safety relief valve; Pre-charge equal to static supply pressure. Models: ST-5, ST-8, ST-12, T-5, T-8, T-12 for residential use only For larger commercial applications: Visit www.amtrol.com, download the AMTROL App or contact Technical Support at 401.535.1216. Figure 2. In-Line Models Backflow Preventor, Check Valve or Pressure Reducing Valve Cold Water Supply Thermal Expansion Tank Mounting tank vertically is recommended Water Heater Hot Water TurbulatorTM Installation (ST-5, ST-8, ST-12 only) 3/4" Threaded Tee Turbulator Tank Connector Press Turbulator fully into connector prior to installing tank. T & P Relief Valve Precharge Adjustment Remove cap and charge to cold supply pressure. Replace cap and tighten until flush with tank. Stand Models Backflow Preventor Check Valve or Pressure Reducing Valve Cold Water Supply Thermal Expansion Tank Hot Water Water Heater T & P Relief Valve 1400 Division Road, West Warwick, RI USA 02893 T: 800.426.8765 www.amtrol.com © 2019 Worthington Industries Inc. One or more features of this product are covered by U.S. patents, visit www.amtrol.com/patents for more information. Models up to 10.3 gallons Part #: 9015-942 (01/19)