FOR INSTALLATION BY QUALIFIED SERVICE PERSONNEL ONLY CONVERSION KIT INSTRUCTIONS LIGHT SERVICE COMMERCIAL ELECTRIC WATER HEATERS PRINTED 1021 100350355 2000548392C 1
FOREWORD The purpose of this manual is to explain how to change the voltage and wattage of a commercial electric water heater by changing the elements. This manual is not intended to explain the rebuilding of electric water heaters in the field. The number of heating elements must remain the same. Increasing or decreasing the number of heating elements from the original build is not approved by Underwriter Laboratories, Inc.
Models with Two Elements, 277 Volts, Single Phase, Simultaneous, Four-Wire A-8 Circuit INSTRUCTIONS Using the table below, locate the row with the voltage and wattage (kW) the customer needs. Order the corresponding kit number. See pages 4 through 7 for detailed conversion instructions. Table 1. Kits for Two-Element Models, 277 Volts Single Phase, Simultaneous, Four-Wire A-8 Circuit Voltage Total KW Input Element Wattage Kit Number 208 9.0 4500 100293211 9.0 4500 100293212 11.
CONVERSION INSTRUCTIONS REQUIRED ABILITY CONVERSION OF ANY WATER HEATER LISTED IN THIS MANUAL REQUIRES ABILITY EQUIVALENT TO THAT OF A QUALIFIED SERVICE TECHNICIAN OR QUALIFIED AGENCY. I. INTRODUCTION Satisfying a customer order for an electric heater from inventory may require modification of the kW input or the voltage. Conversions may involve revision to one or both of these electrical characteristics. The number of elements cannot be changed. II.
V. SIMULTANEOUS/NON-SIMULTANEOUS CONVERSION A. Refer to Figure 1 Four-Wire Circuit for Dual-Element Heater for Simultaneous/Non-Simultaneous wiring configurations. B. Locate the 4"x4" junction box on top of the heater. Remove the cover. C. The heater is factory wired for simultaneous operation. The heater may be converted to non-simultaneous operation by moving the red wire on terminal block L1 to terminal J. D. Re-install the junction box cover.
VI. FINAL ASSEMBLY A. CONTROL COVER(S). Replace plastic personnel protector(s). Unfold insulation. Cover all elements and thermostats as originally constructed. Replace door(s) and tighten the screws. B. RATING PLATE MODIFICATION OF DUAL ELEMENTS ELECTRIC WATER HEATERS. Following is an example of the standard rating plate supplied on the front of dual element commercial electric water heaters.
C. CAUTION LABEL Peel off back of caution label and place as near to rating plate as possible, taking care not to cover any existing labels. D. CARTON IDENTIFICATION Using a black permanent marker, cross out heater identification on carton as appropriate. In bold letters, write new electrical specifications on carton, matching those on the revised rating plate. E. SHIPPING CARTON Close and tape the cardboard flap on the front of carton and re-install the top locator if removed. Seal top of carton.
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