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Manual 47132A
The Bradford White
(To be performed ONLY by qualified service providers)
Save this manual for future reference
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U130T*FRN
U150L*FRN
U130S*FRN
U1504S*FRN
U430T*FRN
U140T*FRN
U440T*FRN
U1403T*FRN
U4403S*FRN
U1403S*FRN
U1404T*FRN
U4503*FRN
U1503*FRN
U1XR403S*FRN
(*) Denotes Warranty Years.
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Summary of Contents for Bradford White ECO-DEFENDER U130T*FRN
- Page 1 The Bradford White (To be performed ONLY by qualified service providers) U130T*FRN U150L*FRN U130S*FRN U1504S*FRN U430T*FRN U140T*FRN U440T*FRN U1403T*FRN U4403S*FRN U1403S*FRN U1404T*FRN U4503*FRN U1503*FRN U1XR403S*FRN (*) Denotes Warranty Years. Save this manual for future reference Manual 47132A...
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Page 2: Table Of Contents
The Bradford White Ultra Low NOx Gas Water Heaters Page Service Procedure Introduction - - - Gas Control Troubleshooting Chart - - - Tools Required for Service - - - Burner and Inner Door Gasket Removal, Inspection, Replacement and Installation... -
Page 3: Introduction
INTRODUCTION 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 District (SCAQMD) Rule 1121. -
Page 4: Tools Required For Service
Contact the Bradford White technical support group immediately if diagnosis can not be made using the methods described in this service manual. -
Page 5: Gas Control Troubleshooting Chart
Gas Control Troubleshooting Observe red LED indicator on Red LED gas control. Error flash codes are Indicator displayed with a three second pause before repeating. Check and repair the system as noted in the troubleshooting table below. LED Status Control Status Probable Cause Service Procedure Gas valve is operating... - Page 6 Gas Control Troubleshooting LED Status Control Status Probable Cause Service Procedure 1. Damage to the Five flashes thermowell wire. and three Thermostat well fault. 2. Thermowell See page 14. second sensor resistance pause. out of range. Chamber door 1. Chamber door Six flashes temperature sensor out temperature sensor...
- Page 7 SERVICE PROCEDURE ED-I Burner and Inner Door/Gasket Removal, Inspection, Replacement and Reinstallation Inner Door Removal Procedure Gas Control Knob Shown In “OFF” Position Step 1. Rotate the gas control knob to the “OFF” position. Step 2. Remove outer jacket burner access door Step 3.
- Page 8 SERVICE PROCEDURE ED-I Burner and Inner Door/Gasket Removal, Inspection, Replacement and Reinstallation Inner Door Gasket Replacement Procedure. WARNING If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury or death. Step 5.
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Page 9: Burner And Inner Door Gasket Removal, Inspection, Replacement
SERVICE PROCEDURE ED-I Burner and Inner Door/Gasket Removal, Inspection, Replacement and Reinstallation Position Thermopile Wire, Pilot Tube and Igniter Wire Step 10. Firmly place right side inner door flange against the burner door flange and secure with two ¼” drive screws from step 3e. -
Page 10: Thermopile Testing And Replacement
SERVICE PROCEDURE ED-II Thermopile Testing and Replacement CLOSED CIRCUIT THERMOPILE TESTING (Honeywell Control) Step 1. Closed circuit testing is the 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 SERVICE PROCEDURE ED-II Thermopile Testing and Replacement THERMOPILE REPLACEMENT Step 1. Turn off gas supply to water heater. Rotate gas control knob to the “OFF” position. Gas Control Knob Shown In “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.
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Page 12: Pilot Assembly Inspection, Cleaning And Replacement
SERVICE PROCEDURE ED-III Pilot Assembly Inspection, Cleaning and Replacement PILOT/ELECTRODE ASSEMBLY INSPECTION, CLEANING AND REPLACEMENT Gas Control Knob Shown In “OFF” Position Step 1. Turn off gas supply to water heater. Rotate gas control knob to the “OFF” position. Step 2. Remove outer jacket door. -
Page 13: Igniter And Electrode Testing And Replacement
SERVICE PROCEDURE ED-IV Igniter and Electrode Testing and Replacement 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. Step 1. -
Page 14: Gas Control Replacement Thermal Well And Chamber Door Sensor Testing And Replacement
SERVICE PROCEDURE ED-V Gas Control Replacement Thermal Well and Chamber Door Sensor Testing and Replacement Thermal Well Testing Disconnect thermal well wire harness If Control has gone into lockout due to excessive tank temperature (four flash, 3 second pause) reset control by rotating gas control knob to “OFF”... -
Page 15: Determine Water Temperature Inside Tank
SERVICE PROCEDURE ED-V Gas Control Replacement Thermal Well and Chamber Door Sensor Testing and Replacement WARNING Stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Determine Water Temperature Inside Tank Note: It is important to understand once the resistance for the thermal well is determined from page 14, water flow through the heater should not occur. - Page 16 SERVICE PROCEDURE ED-V Gas Control Replacement Thermal Well and Chamber Door Sensor Testing and Replacement Gas Control & Thermal Well Removal From Water Heater Gas Control Step 1. Turn the gas control knob to the Thermal “OFF” position. Well Step 2. Drain heater to a point below the gas control level.
- Page 17 SERVICE PROCEDURE ED-V Gas Control Replacement Thermal Well and Chamber Door Sensor Testing and Replacement Gas Control Assembly to Thermal Well Step 1. Install threaded end of thermal well into tank. Be sure thermal well flange is positioned as shown in photo 3 for proper control alignment.
- Page 18 SERVICE PROCEDURE ED-V Gas Control Replacement Thermal Well and Chamber Door Sensor Testing and Replacement CHAMBER SENSOR TESTING Step 1. Turn the gas control knob to the “OFF” position Gas Control Knob Shown In “OFF” Position Step 2. Disconnect the chamber sensor wire harness from the gas valve.
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Page 19: Burner Operation Inspection, Cleaning And Replacement
Under no circumstances shall flammable materials be used or stored in the vicinity of the water heater. With the inner door removed the Bradford White Defender Safety System will be inactivated. If flammable vapors are present, a fire or explosion may result causing property damage, personal injury or death. - Page 20 SERVICE PROCEDURE ED-VI Burner Operation Inspection, Cleaning and Replacement BURNER CLEANING (Cont.) 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.
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Page 21: Resettable Thermal Switch Testing And Replacement
SERVICE PROCEDURE ED-VII Resettable Thermal Switch Testing and Replacement RESETTABLE THERMAL SWITCH CONTINUITY TESTING 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. - 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. Gas Control Knob Shown In “OFF” Position Step 2. Remove outer jacket door. Step 3. Disconnect wire leads from resettable thermal switch. Step 4.
- Page 23 SERVICE PROCEDURE ED-VIII ScreenLok Flame Arrestor Cleaning ScreenLok Flame Arrestor Cleaning Step 1. Rotate gas control knob to the “OFF” position. Gas Control Knob Shown In “OFF” Position Step 2. Remove outer jacket door. Step 3. Remove burner and inner door per SERVICE PROCEDURE ED-I, step 3a through 3g.
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Page 24: Dip Tube And Anode Inspection And Replacement
SERVICE PROCEDURE ED-IX Dip Tube and Anode Inspection and Replacement DIP TUBE INSPECTION AND REPLACEMENT WARNING Water Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. - Page 25 SERVICE PROCEDURE ED-IX Dip Tube and Anode Inspection and Replacement ANODE INSPECTION AND REPLACEMENT WARNING Heater components and stored water may be HOT when performing the following steps in this procedure. Take necessary precaution to prevent personal injury. Step 1. Turn off water supply to water heater.
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Page 26: Generic Parts List
17 Screw #8-18 x ½ Hex Washer Head Flue Baffle 18 Resettable Thermal Switch Hot Water Outlet/Anode 19 Screw #6-20 x 3/8 PHCR Cold Water Inlet Tube 20 Screw #8-18 x ¾ Hex Washer Head T&P Relief Valve 21 Manifold Mount Thermal Well 22 Complete Right Side Inner Door Brass Drain Valve... - Page 28 Email parts@bradfordwhite.com techserv@bradfordwhite.com www.bradfordwhite.com...
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При включении бойлера, фитиль загорается, а лампочка индикатора не загорается и как следствие нет воспламенения горелки.