Bradford-White Corp E32-120R manuale d’uso

(To be performed ONLY by qualified service providers) Save this manual for future reference Manual 239-47157-00B Commercial Electric Energy Saver: E32-50S E32-80R E32-120R[...]

Page Service Procedure Introduction ………………………………………………………………………. 2 - - - Tools……………………………………………………………………………… 2 - - - General Information ……………………………………………………………… 3 - - - Sequence of Operat[...]

GENERAL INFORMATION Ungrounded Ungrounded Groundin g BLACK RED GREEN 240 120 120 120 ABC Neutral RED BLACK RED 120 120 208 208 208 277 ABC Neutral RED BLACK RED 277 277 480 480 480 120 ABC Neutral RED BLACK RED 120 120 240 240 240 Amps = Watts (for single phase units) Exam ple 4500W/240V = 18.75A Volts Amps = Watts (for balanced 3 phase units) Exam[...]

GENERAL INFORMATION Full Load Amperes-(Phase 1/Phase 3) Page 4 Input Kw 208V 28.8/16.6 240V 277V 380V 415V 480 V 6 9 12 13.5 15 18 43.2/25 57.6/33.3 64.9/37.5 72.1/37.5 86.5/50 25/14.4 37.5/21.6 50/28.9 56.2/32.5 62.5/36.1 75/43.4 21.6 32.4 43.3 48.7 54.1 64 10 14 19 21 23 28 8.3 12.5 16.7 18.8 20.9 25 12.5/7.2 18.7/10.8 25/14.4 28.1/16.2 31.2/18 3[...]

SEQUENCE OF OPERATION E32 series medium duty, field convertible commercia l electr ic water heaters are designed to operate using single pha se or three phase service connectio ns. On e size fits all Inte rnal fusing is factory installed for all units. When field conversions are required, no fuse change is necessary . Three surface mounted thermost[...]

Page 6 FIELD CONVERSION FOR: KW, Voltage and Phase All E32 series medium duty commercial water heaters are fact ory wired to the maximum electrical duty for which they have been designed. Therefore, internal electrical co mponents satisfy the ma ximum voltage and maximum ele ctrical current conditions. These instructions do not allow for a modifica[...]

Electrical Phase Conversion Electrical phase conversion will require a change fro m si ngle-phase to three-phase or an opposite conversion change from three-phase to single-pha se. Each of thes e conversions will be explai ned sepa rately as follows: Three-Phase to Single-Phase 1. Disconnect blue and yellow wires from terminal L-3 of the termin al [...]

The heaters rating plate will need to be modified because t he conversion altered the electr ical characteristics of the heater. Refer to the illustration below that displays a typical co mmercial electric rating plate that is to be altered. This rating plate is placed on every Commercial Electric water heater produced by Bradford Wh ite Corporatio[...]

TROUBLESHOOTING Most common cause for improper electric water heater operation can be linked to h eating element failure. When troubleshooting an ele ctric water heater with the inci dence of “No Hot Water” or “Insufficient Amoun t of Hot Water” It is always a good idea to check the heati ng elements first fo llowing the procedu re on page [...]

SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION No Hot Water 1. No Power to heater. 2. Blown water heater fuses. 3. Loose wire connections. 4. Inoperative heating elements. 5. Inoperative thermostat . 6. Open ECO. 1. Inoperative heating element. 2. Thermostat(s) set to lo w. 3. Inoperative thermostat (s). 4. Loose wire connection. 5. Sediment or lime buil[...]

SERVICE PROCEDURE E32-I Heating Element Testing Step 1. TURN OFF POWER TO WATER HEATER. Step 2. Remove thermostat/elem ent access cover(s) from front of water heate r. Remove insulation and plastic cover from thermosta t. Step 3. Disconnect wires from heatin g eleme nt. Step 4. Set multi-meter to “ohms” setting. Step 5. Touch probe s of multi-m[...]

SERVICE PROCEDURE E32-II Line Voltage Testing WARNING High voltage exposure. Use caution when making voltage checks to avoid personal injury. Line Voltage Testing Illustration 3 7. For 3 phase service check across L1 & L2 and across L1 and L3 (see illustrations 4 & 5) A) Rated voltage IS pres ent, power to the water heater is okay. B) Rated[...]

SERVICE PROCEDURE E32-III Fuse Testing Fuse Testing 1. Turn “OFF” power to water heater. 2. Open control b ox located at the top of the heater to allow access to fuse block. 3. Disconnect wire leads from fuse block. NOTE: It may be nece ssary to label wires for proper re-connection when finished. 4. Set multi-meter to the “Ohms” setting. 5.[...]

SERVICE PROCEDURE E32-IV Thermostat Testing WARNING High voltage exposure. Use caution to avoid personal injury duri ng this procedure. Illustration 8 Water In Tank Is Cold With Power ON. 1. This procedure assumes line voltage, ECO and elements are in working order. 2. Turn power “O N” to water heater. 3. Set multi-meter to “Volts AC”. 4. C[...]

SERVICE PROCED URE E32-V Thermostat Removal and Replacement Front View Thermostat Mounting Thermostat Removal 1. Turn power “OFF” To water heater. 2. Remove access cover(s) and ins ulation. 3. Remove plastic thermostat protector from thermostat(s). 4. Disconnect wires from thermostat terminals. It may be necessary to label wires for proper re-c[...]

SERVICE PROCEDURE E32-VI Heating Element Removal and Replacement Heating Element Removal 1. Turn power “OFF” To water heater. 2. Turn off cold water supply to heater. Connect hose to drain spigot of water heater and route to an open drain. Open a nearby hot water faucet to vent heater for draining. Open drain spigot of water heater and allow he[...]

Page 17 Step 1. Turn power “OFF” to water heater. Step 2. Turn off cold water supply to h eater. Connect hose to drain spigot of water heater and route to an open drain. Open a nearby hot water faucet to vent hea ter for dr aining. Open drain spigot of water heater and allow heater to drain to a p oint below the inlet connection nipple. Step 3.[...]

Page 18 Generic Parts List 1. Hot Water Outlet Anode 2. T&P Relief Valve 3. Cold Water Inlet Dip Tube 4. Control Box 5. Ground Lug 6. Fuse 7. Fuse Block 8. Terminal Block 9. Brass Drain Valve 10. Thermostat Mounting Bracket 11. Element Gasket 12. Heating Element 13. Thermostat Surface Mount 14. Thermostat Protector 15. Thermostat/Element Access[...]

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