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Light Duty Commercial Electric Water Heater
®
LISTED
USE & CARE MANUAL
786H
WITH INSTALLATION INSTRUCTIONS FOR THE INSTALLER
The purpose of this manual is twofold: one, to provide the installer with the
basic directions and recommendations for the proper installation and
adjustment of the water heater; and two, for the owner–operator, to
explain the features, operation, safety precautions, maintenance and
troubleshooting of the water heater. This manual also includes a parts list.
It is imperati
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Safety Information FOR YOUR RECORDS Safety Precautions . . . . . . 3 Write the model and serial numbers here: # # You can find them on a label on the appliance. Staple sales slip or cancelled check here. Proof of the original purchase date is needed to obtain Installation Instructions service under the warranty. Location. . . . . . . . . . . . . . . 4 Water Connections . . . . . . 4 Electrical Connections . 5, 6 READ THIS MANUAL Inside you will find many helpful hints on how to use and maintain
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T E S E R ! General Safety Precautions Be sure to read and understand the entire Use & Care Manual before attempting to install or operate this water heater. Pay particular attention to the following General Safety Precautions. Failure to follow these warnings could result in serious bodily injury or death . Should you have any problems un- derstanding the instructions in this manual, STOP, and get help from a qualified installer or service technician or the local utility. To meet commercial wat
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Introduction The location chosen for the water heater must take into consideration the CAUTION ! following: The water heater should not be located in an area where leakage of LOCAL INSTALLATION REGULATIONS the tank or connections will result in damage to the area adjacent This water heater must be installed in accordance with these instructions, to it or to lower floors of the structure. Where such areas cannot be avoided, it is recommended that a suitable catch pan, adequately local codes, uti
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HOT COLD R E V L A I L E V F E Installation Three (3) sheet metal screws removed Union Temperature from "factory installed" junction box. & Cover and Label Heat trap Pressure 6" (15.24 cm) Relief Valve minimum Ground Screw Union Hot WARNING TANK MUST BE FULL water outlet OF WATER BEFORE HEATING ELEMENTS ARE ENERGIZED. SEE INSTALLATION to fixtures INSTRUCTIONS Insert Electrical Leads through Snap Bushing into Electrical Anode Junction Box Heat trap junction box 6" (15.24 cm) (use only copper min
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HOT HOT COLD COLD R E V L A I L E V F E R E V L A I L E V F E Installation 6. PIPE INSULATION — For increased energy efficiency, certain water CAUTION ! heater models covered by this Use & Care Manual have been The presence of water in the piping and water heater does not supplied with two (2) 24” (61 cm) sections of pipe insulation. Should provide sufficient conduction for a ground. Non-metallic piping, the model being employed in your particular installation include the dielectric unions, flex
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T E S E R Operation SAFETY PRECAUTIONS A. Do turn off power to water heater if it has been subjected to over CAUTION ! heating, fire, flood or physical damage. Hydrogen gas can be produced in a hot water system served by B. Do Not turn on water heater unless it is filled with water. this water heater that has not been used for a long period of time (generally two weeks or more). HYDROGEN GAS IS EXTREMELY C. Do Not turn on water heater if cold water supply shut-off valve is FLAMMABLE!! To dissi
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Operation WARNING ! DANGER ! 3. EMERGENCY INSTRUCTIONS — The water drained from the tank may be hot enough to present a If water heater has been subjected to flood,fire,or physical damage, SCALD HAZARD and should be directed to a suitable drain to turn off power and water to water heater. Do not operate the water heater again until it has been thoroughly checked by qualified prevent injury or damage. service personnel. 4. LONG TIME SHUT-DOWN — If the water heater is to remain idle for an extende
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Trouble Shooting Guide NATURE OF TROUBLE POSSIBLE CAUSE SERVICE No Hot Water 1. Manual switch turned off Turn to ON 2. Improper Wiring ** Rewire per Wiring Diagram 3. No Power — blown fuse or circuit breaker tripped a. Shorted wiring ** Replace or repair b. Circuit overloaded ** Provide adequate circuit or reduce load c. Improper wiring ** Rewire per diagram d. Grounded element or thermostat ** Replace 4. Manual Reset Limit (ECO) open Refer to "Operation Section" a. Thermostat(s) defective ** Re
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E S E R T Replacement Parts List Instructions for placing a Parts Orders: Address parts orders to the distributor or store from where the heater was purchased. Light Duty Commercial All parts orders should include: Models 1. Model number and Serial number of heater (from rating plate). Tall or Short Versions 2. Specify voltage and wattage as marked on rating plate. 3. Part Description (as noted at right) and number of parts desired. Temperature & Pressure relief valve Some models may have Dip tu
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Cavity Insert Instructions The following instructions are intended for qualified service personnel ONLY, and should only be done when necessary. In order to replace the thermostat or heating element, remove the cavity insert crossbar by following the instructions below: 1. Turn off the power to the water heater. 2. Remove the jacket access panel(s) and insulation. 3. Rotate the crossbar up and down until it breaks away from the remainder of the cavity insert. (See illustration to the le
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Wiring Diagrams — Therm-O-Disc Thermostats (Type 59T) DOUBLE ELEMENT DOUBLE ELEMENT DOUBLE ELEMENT SIMULTANEOUS OPERATION NON-SIMULTANEOUS NON-SIMULTANEOUS DOUBLE ELEMENT DOUBLE ELEMENT FIG. A-1 SIMULTANEOUS OPERATION WITH 4 WIRE OUTLET NON-SIMULTANEOUS WITH 4 WIRE OUTLET ‡ WITH 3 WIRE OUTLET BRANCH CIRCUIT CONNECTOR TO "OFF PEAK" TO SECOND POWER SOURCE, BRANCH CIRCUIT TO ELECTRICAL BRANCH CIRCUIT METER (TIMER) BRANCH CIRCUIT "OFF PEAK" METER, OR TIMER TO ELECTRICAL DISTRIBUTION PANEL TO ELECTRI
