COMMERCIAL ELECTRIC WATER HEATER La estas of instrucciones se puede obtener al a A version Spanishespanola languagede version these instructions is available byescribirle contacting lathe fábrica cuyo listed nombre la placa de especificaciones. company on aparece the ratinginplate. ALa Spanish of instrucciones these instructions is available byalcontacting versiónlanguage espãnolaversion de estas se puede obtener escribirle the on aparece the ratingenplate.
TABLE OF CONTENTS General Information .......................................................... 3 Installation ......................................................................... 4 Locating The Water Heater.................................................... Water Connections ................................................................ Electrical Connections .......................................................... Amperage Chart ..................................................................
GENERAL INFORMATION The design of this electric water has been listed with Underwriters’ Laboratories, Inc. (UL) as complying with UL standard UL1453. This water heater must be installed in accordance with local codes. In the absence of local codes, install this water heater in accordance with the N.E.C. Reference Book (latest edition).
General Information continued- A sacrificial anode(s) is used to extend tank life. Removal of any anode, for any reason, will nullify the warranty. In areas where water is unusually active, an odor may occur at the hot water faucet due to a reaction between the sacrificial anode and impurities in the water. If this should happen, an alternative anode(s) may be purchased from the supplier that installed this water heater. This will minimize the odor while protecting the tank.
Locating The Water Heater continued- It is recommended that the water heater be located near the center of greatest hot water usage to prevent heat loss through the pipes. DO NOT locate the water heater where water lines could be subjected to freezing temperatures. Locate the water heater so that access panels and drain valves are accessible. Water heater corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors.
Water Connections NOTE: BEFORE PROCEEDING WITH THE INSTALLATION, CLOSE THE MAIN WATER SUPPLY VALVE. After shutting the main water supply valve, open a faucet to relieve the water line pressure to prevent any water from leaking out of the pipes while making the water connections to the water heater. After the pressure has been relieved, close the faucet. The cold water inlet line connects to the inlet nipple at the base of the water heater.
Water Connections continued- WARNING For protection against excessive temperatures and pressure, install temperature and pressure protective equipment required by local codes, but not less than a combination temperature and pressure relief valve certified by a nationally recognized testing laboratory that maintains periodic inspection of production of listed equipment or materials, as meeting the Requirements for Relief Valves and Automatic Gas Shutoff Devices for Hot Water Supply Systems, ANSI Z21.
Water Connections continued- WARNING Hydrogen gas can be produced in a hot water system served by this water heater that has not been used for a long period of time (generally two weeks or more). Hydrogen gas is extremely flammable. To reduce the risk of injury under these conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before using any electrical appliance connected to the hot water system.
Water Connections continued- Figure 1 (Dual Temperature System With Mixing Valve) 9
Water Connections continued- Figure 2 (Single Installation With Storage Tank Gravity Circulation) Figure 3 (Dual Water Heater Installation) 10
Electrical Connections Before any electrical connections are made, be sure that the water heater is full of water and that the manual shut-off valve in the cold water supply line is open. If the heating elements are not completely immersed in water at all times, they will be damaged (burned-out) if energized for even a short period of time. The warranty does not cover burned-out heating elements. Check the rating plate and wiring diagram before proceeding.
Electrical Connections continued- Amperage Chart kW 208V 240V 277V 380V 415V 480V Input 1Ø 3Ø 1Ø 3Ø 1Ø 3Ø 3Ø 1Ø 3Ø 6 29 17 25 14 22 9 8 12 7 9 43 25 38 22 32 14 13 19 11 12 58 33 50 29 43 19 17 25 14 13.
GENERAL OPERATION Before closing the switch to allow electric current to flow to the water heater, make certain that the water heater is full of water and that the cold water inlet valve is open. Complete failure of the heating elements will result if they are not totally immersed in water at all times. When the switch is closed, the operation of this electric water heater is automatic.
Thermostat Adjustment There are two types of thermostats this electric water heater may come equipped with from the factory. One type, surface mounted thermostats, directly contacts the water heater tank surface (see Figure 4). The second type, immersed type are immersed within the water heater tank and uses contactor type relays. Before any work is done on the water heater, disconnect all power to the water heater by opening the switch at the main electrical circuit breaker or fuse box.
Thermostat Adjustment continued- Figure 4 Figure 5 15
MAINTENANCE IMPORTANT The water heater should be inspected at a minimum of annually by a qualified service technician for damaged components. DO NOT operate this water heater if any part is found damaged. Shut off the electric power whenever the water supply to the water heater is off. Shut off the electric power and water supply, drain the heater completely to prevent freezing whenever the building is left unoccupied during the cold weather months.
Maintenance continued- 3. At least once a year, check the combination temperature and pressure relief valve to insure that the valve has not become encrusted with lime. Lift the lever at the top of the temperature-pressure relief valve several times until the valve seats properly without leaking and operates freely. WARNING When lifting lever of temperature-pressure relief valve, hot water will be released under pressure.
Maintenance continued- Contact your local plumbing supplier or plumbing professional for replacement parts or contact the company at the address displayed on the rating plate of the water heater. For faster and better service, please provide the part name, model, and serial number(s) of the water heater(s) when ordering parts. READ THE WARRANTY FOR A FULL EXPLANATION OF THE LENGTH OF TIME THAT PARTS AND THE WATER HEATER ARE WARRANTED. Manufactured under one or more of the following U.S. Patents: RE.
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