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Bradford-White Corp Eco Defender manual

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Table of contents for the manual

  • Page 1

    (To be performed ONLY by qualified service providers) Save this manual for f utu re r eference Manual 47132A The Bradford White R U150L*FRN U1504S*FRN U430T*FRN U440T*FRN U4403S*FRN U4503*FRN U1XR403S*FRN ( *) Denotes Warranty Years. U130T*FRN U130S*FRN U140T*FRN U1403T*FRN U1403S*FRN U1404T*FRN U1503*FRN R[...]

  • Page 2

    The Bradford White Ultra Low NOx Gas Water Heaters Page Service Procedure Introduction 3 - - - Gas Control Troubleshooting Chart 5 - - - Tools Required for Service 4 - - - Burner and Inner Door Gasket Removal, Inspection, Replacement and Installation 7 ED-I Thermopile Testing and Replacement 10 ED-II Pilot Assembly Inspection, Cleaning and Replacem[...]

  • Page 3

    The Bradford White ECO-DEFENDER Safety System The Bradford White ECO-DEFENDER Safety System was designed to resist the ignition of flammable vapors that can occur outside of the water heater. In addition, the ECO-DEFENDER Safety System is designed to meet the stringent NOx emissions standards required in the South Coast Air Quality Management Distr[...]

  • Page 4

    It is intended for this manual to be used by qualified service personal for the primary purpose of troubleshooting and repair of the Bradford White ECO-DEFENDER Series of water heaters. The Honeywell WV8860Q Gas Control will display error codes in the event of ab normal operation. Error codes are listed in the troubleshooting chart beginning on pag[...]

  • Page 5

    Page 5 LED Sta t us Cont r ol St at us Pr obabl e Cause Servi ce Procedu re N on e (LED n ot on or f l ash in g) G a s v al v e is oper at i n g n orm al l y . Pilot fl am e m ay n ot be pres en t . C h eck f or pil ot f lam e t h r ou gh sigh t gl ass an d l ig h t if n ec e s s ar y . 1. G as v al v e i s f unc t i o ni ng no r m a l l y 2. G as [...]

  • Page 6

    Page 6 LED Sta t us Contr ol St at us Probabl e Cause Ser v i ce Pr oce dur e Fi v e f l ash es an d t h ree secon d pau se. Th e r mo s ta t we ll fa ult. 1. Dam age t o t h e the rm o we ll wi r e . 2. T h erm ow el l sen sor r esi st an ce ou t of ran ge. See page 14. Si x f l ash es an d t h ree secon d pau se. Ch amber do or t em per atu re se[...]

  • Page 7

    Inner Door Removal Procedure Step 1. Rotate the gas control knob to the “OFF” position. Step 2. Remove outer jacket burner access door Step 3. Inner Door Removal. a) Disconnect chamber door temperature sensor wire harness from the gas valve. b) Disconnect resettable thermal switch white wire lead (leading from gas valve). Disconnect the red wir[...]

  • Page 8

    Installation of Inner Door With Gasket. WARNING Stripped fastener connections may allow for seal breach of inner door. A seal breach may result in a fire or explosion causing property damage, personal injury or death. Do not over tighten screws in steps 8, 10 and 11. If a fastener connection is stripped, contact the manufacturer listed on the water[...]

  • Page 9

    Step 10. Firmly place right side inner door flange against the burner door flange and secure with two ¼” drive screws from step 3e. DO NOT OVER TIGHTEN SCREWS . Step 11. Align right side inner door to combustion chamber and verify the fastener holes of the combustion chamber are aligned with the right side inner door slotted opening. Verify seal[...]

  • Page 10

    Step 1. Closed circuit testing is t he preferred method for testing thermopile. Following the lighting instruction label on the heater, proceed to light the pilot and allow to operate for three minutes. If the pilot will not stay lit, hold the pilot button (rotate the gas control knob to the pilot position, push and hold in) during this test Step 2[...]

  • Page 11

    THERMOPILE REPLACEMENT Step 1. Turn off gas supply to water heater. Rotate gas control knob to the “OFF” position. Step 2. Remove outer jacket door. Step 3. Remove right side inner door and burner door per SERVICE PROCEDURE RG-I, steps 3a through 3g. Step 4 Disconnect the red thermopile wire from the wire harness and the white thermopile wire f[...]

  • Page 12

    PILOT/ELECTRODE ASSEMBLY INSPECTION, CLEANING AND REPLACEMENT Step 1. Turn off gas supply to water heater. Rotate gas control knob to the “OFF” position. Step 2. Remove outer jacket door. Step 3. Remove burner and right side of inner door per SERVICE PROCEDURE ED-I, steps 3a through 3g. Step 4. Remove burner assembly from combustion chamber. St[...]

  • Page 13

    IGNITER, ELECTRODE TESTING AND REPLACEMENT With the pilot not in operation (no pilot flame) you can check the igniter and electrode circuit by viewing pilot thru the sight glass located on the inner door and observing the spark action. SERVICE PROCEDURE ED -IV Igniter and Electrode Testing and Replacement Step 1. Remove outer jacket door. Step 2. R[...]

  • Page 14

    Thermal Well Testing Thermal well testing Position gas control knob to the “OFF” position and disconnect thermal well harness from gas control. N Y Using a multi-meter set to the ohms setting, insert one meter probe (see caution) into center wire position of thermal well connector, insert the second probe (see caution) into either of the outsid[...]

  • Page 15

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  • Page 16

    Gas Control & Thermal Well Removal From Water Heater Step 1. Turn the gas control knob to the “OFF” position. Step 2. Drain heater to a point below the gas control level. Step 3. Turn off gas supply to water heater and disconnect gas piping from gas control. Step 4. Disconnect wire harnesses and burner assembly from gas control. Step 5. Rem[...]

  • Page 17

    Gas Control Assembly to Thermal Well Step 6. Reconnect wire harnesses and igniter wire to gas control per the illustration to the left. Step 7. Reconnect gas piping to gas control. Restore gas supply and check for gas leaks. Step 8. To resume operation, follow the instruction located on the lighting instruction label or the lighting instruction loc[...]

  • Page 18

    Step 1. Turn the gas control knob to the “OFF” position Step 2. Disconnect the chamber sensor wire harness from the gas valve. Step 3. Remove the chamber door temperature sensor from the right side inner door (Phillips screw driver). Step 4. Make sure that the ring terminal of the chamber door temperature sensor is not touching any surface. Usi[...]

  • Page 19

    At periodic intervals (not more then 6 months) a visual inspection should be made of the main burner for proper operation and to insure no debris is accumulating. Main burner should light smoothly from pilot and burn with a blue flame with a minimum of yellow tips. After 5 minutes of operation the burner screen will become radiant and the flame wil[...]

  • Page 20

    Step 5. Disconnect (unscrew) manifold mount from feed line. Use a stiff brush, compressed air and/or shop vacuum to remove any debris build up from the manifold mount. Step 6. Remove main burner orifice from feed line (3/8" wrench). Inspect and clean if necessary Step 7. Remove pilot assembly, refer to SERVICE PROCEDURE ED-III for cleaning and[...]

  • Page 21

    Step 1. Remove outer jacket door. Step 2. Disconnect white wire leads from resettable thermal switch. Step 3. Using a multimeter capable of measuring continuity (Ohms), place one probe of meter on one of the brass connection tabs of the resettable thermal switch, and the remaining probe on the other connection tab. Step 4. If continuity is indicate[...]

  • Page 22

    SERVICE PROCEDURE ED -VII Resettable Thermal Switch Testing and Replacement RESETTABLE THERMAL SWITCH REPLACEMENT Step 1. Rotate gas control knob to the “OFF” position. Step 2. Remove outer jacket door. Step 3. Disconnect wire leads from resettable thermal switch. Step 4. Remove (2) ¼” hex drive screws from the manifold mount. Step 5. Bend t[...]

  • Page 23

    SERVICE PROCEDURE ED-VIII ScreenLok Flame Arrestor Cleaning Step 1. Rotate gas control knob to the “OFF” position. Step 2. Remove outer jacket door. Step 3. Remove burner and inner door per SERVICE PROCEDURE ED-I, step 3a through 3g. Step 4. Clean ScreenLok Flame Arrestor using stiff brush, compressed air and/or shop vacuum to remove any scale [...]

  • Page 24

    SERVICE PROCEDURE ED-IX Dip Tube and Anode Inspection and Replacement Page 24 Step 1. Rotate gas control knob to the “OFF” position. Step 2. Turn off cold water supply to water 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 h[...]

  • Page 25

    Step 1. Turn off water supply to water heater. Rotate gas control knob to the “OFF” position. Step 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 hot water heater and allow heater to drain to a poin[...]

  • Page 26

    1 Flue Baffle 2 Hot Water Outlet/Anode 3 Cold Water Inlet Tube 4 T&P Relief Valve 5 Thermal Well 6 Brass Drain Valve 7 Gas Valve 8 Main Burner Orifice 9 Heat Trap Inlet 10 Heat Trap Outlet 11 Outer Door 12 Draft Diverter 13 Complete Burner Assembly 14 RN Burner and Door 15 Flexible Gas Feed Line 16 Pilot Assembly 17 Screw #8-18 x ½ Hex Washer [...]

  • Page 27

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  • Page 28

    Email parts@bradfordwhite.com techserv@bradfordwhite.com www .bradfordwhite.com[...]