Light Duty Commercial Electric Water Heaters Use and Care Manual Installation Start-Up Maintenance Parts Warranty This manual must only be used by a qualified installer / service technician. Read all instructions in this manual before installing. Perform steps in the given order. Failure to do so could result in substantial property damage, severe personal injury, or death.
The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important product information. IMPORTANT SAFETY INSTRUCTIONS When using electrical appliances, basic safety precautions to reduce the risk of fire, electric shock, or injury to persons should be followed, including: DANGER indicates an imminently hazardous situation which, if not avoided, will result in serious personal injury or death. 1.
Installer - Read all instructions in this manual before installing. Perform steps in the given order. User - This manual is for use only by a qualified heating installer / service technician. Have this water heater serviced / inspected annually by a qualified service technician. FAILURE TO ADHERE TO THE GUIDELINES ON THIS PAGE CAN RESULT IN SUBSTANTIAL PROPERTY DAMAGE, SEVERE PERSONAL INJURY, OR DEATH. NOTE: If the water heater is exposed to the following, do not operate.
B. Locating the Water Heater Locate the water heater where any leakage from the relief valve, related piping, tank, or connections will not result in damage to surrounding areas or lower floors of the building. The water heater should be located near a floor drain or installed in a drain pan. Leakage damages ARE NOT covered by warranty. dgs.ca.gov or call 1-916-445-8100 and request instructions. However, applicable local codes shall govern installation.
If you suspect that your water is contaminated in any way, discontinue use of the appliance and contact an authorized technician or licensed professional. • Water pH between 6.5 and 8.5 • pH levels below 6.5 can cause an increase in the rate of corrosion. pH of 8.5 or higher can potentially cause lime scale build-up • Maintain water pH between 6.5 and 8.5. Check with litmus paper or have it chemically analyzed by a local water treatment company. • If the pH is not between 6.5 and 8.
Front View Top View LP-379-J 07/13/15 Figure 2 - Dimensional Drawing - Non-Simultaneous Operation Specifications and Dimensions Light Commercial Models Storage Capacity A B C D WEC080 80 6 1/2” 60” 69” 23 1/4” WEC100 100 52” 61” WEC115 115 60 1/4” 69” 7 1/4” 27” Water Temperature Ratings E Safety Listing Hot / Cold Inlets 8” UL 1453 3/4” NPT Shipping Min. Max. Weight Delivered Delivered (Lbs. Est.) Temp. Temp. 151 206 224 181oF (82.8 C) 120oF (48.8 C) High Temp.
Figure 3 - Installing Cold Inlet and Hot Outlet Fittings CAUTION The Cold Inlet and Hot Outlet Fittings MUST BE INSTALLED according to the steps in Figure 3 for the electric water heater to operate properly. Failure to install these fittings properly will result in improper water heater operation, possible substantial property damage, and increased costs. Service calls to repair the installation and properly install these fittings ARE NOT COVERED by water heater warranty.
Part 3 - Piping A. Plumbing It is mandatory that all plumbing be done in accordance with federal, local, and state plumbing codes and practices. Failure to properly install the water heater WILL VOID the warranty. It is also necessary to use both thread tape and pipe sealing compound on all mechanical plumbing connections. It is recommended to use unions on the hot and cold water connections to easily disconnect the water heater for servicing.
F. Scalding To avoid water damage or scalding due to relief valve operation: • Discharge line must be connected to relief valve outlet and run to a safe place of disposal. Terminate the discharge line in a manner that will prevent possibility of severe burns or property damage should the relief valve discharge. • Discharge line must be as short as possible and the same size as the valve discharge connection throughout its entire length.
H. Applications Figure 5 - Sealing the Water Heater for Sanitary Applications Part 4 - Wiring Tank must be full of water before the power is turned on. Heating elements will be damaged if energized for even a short time while tank is dry. Failures due to “dry-firing” ARE NOT covered by warranty. Figure 4 - Piping Detail - NOTE: Drawing is meant to demonstrate system piping concept. Heat traps are optional.
Part 5 - Installation Checklist Water Heater Location Yes No Yes No Yes No Yes No Close to area of heated water demand Indoors and protected from freezing temperatures Area free of flammable vapors Provisions made to protect area from water damage and control thermal expansion Sufficient room to service heater Relief Valve Temperature and Pressure Relief Valve properly installed and discharge line run to open drain Discharge line protected from freezing Wiring Power supply voltage agrees with w
Replace insulation and the black access cover. Turn on power to the C. Heating Element Replacement Procedure heater. Failure to disconnect the power from the water heater before attempting to adjust or reset the thermostat(s) will result in property damage, severe personal injury, or death. If heating elements need replacement, it is very important to use the same voltage, wattage, and construction. The element sheath must be incoloy and the hex plug must be made of stainless steel.
NOTE: Repeat Steps 3 - 6 as Necessary for Multiple Elements Step #8 - Open the main cold water inlet. If the water heater has been isolated from the system, open the valves. Refill the tank with cold water. Open a hot water faucet high in the system to bleed any air pressure from the system. Water will flow freely when air is completely bled. To flush the tank, attach a hose to the field installed drain valve. Close the cold water supply line shut-off valve.
T&P Relief Valve Maintenance Instructions: • Annually: Certain naturally occuring mineral deposits may adhere to the valve, blocking waterways and rendering the valve inoperative. The T&P Relief Valve lever must be operated to ensure the waterways are clear. If waterways are clear, hot water will discharge from the valve. Take precautions to avoid personal injury and property damage from contact with hot water.
Part 8 - Troubleshooting Problem Reason Remedy Manual disconnect switch turned off No Hot Water Not Enough Hot Water Water Too Hot or Not Hot Enough 1. 2. 3. 4. Turn switch on Blown fuse or circuit breaker tripped Shorted or improper wiring Circuit overloaded Grounded element or thermostat 1. 2. 3. 4. Replace fuse or reset breaker *Replace, repair, or rewire per detail *Provide adequate circuit to reduce load *Replace Manual Reset High Limit (ECO) open 1.
Light Duty Commercial Stainless Steel Electric Water Heater Limited Warranty Westinghouse warrants each light duty commercial stainless steel electric water heater and its components to be free from defects in materials and workmanship according to the following terms, conditions, and time periods. UNLESS OTHERWISE NOTED THESE WARRANTIES COMMENCE ON THE DATE OF INSTALLATION.
10. Failure or performance problems caused by improper sizing of the water heater, expansion device, piping, electric service voltage, wiring or fusing. 11. Damages, malfunctions, or failures caused by improper wiring conversion. 12. Damages, malfunctions, or failures resulting from vacuum conditions. 13. Damages, malfunctions, or failures caused by operating the water heater with modified, altered, or unapproved components, or any component / attachment not supplied by Westinghouse. 14.
Customer Installation Record Form The following form should be completed by the Qualified Installer / Service Technician for you to keep as a record of the installation in case of a warranty claim. After reading the important notes at the bottom of the page, please also sign this document.
