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The Bradford White

DEFENDER

Safety System

Flammable Vapor Ignition Resistant Water Heaters

Table of Contents

Page

Service

Procedure

Introduction………………………………………………………………………… …...4

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Troubleshooting Charts…………………………………………………………….…...6

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Inner Door Gasket Removal, Inspection, and Replacement………………………..12

RG-I

Thermocouple/Thermopile Testing and Replacement………………………….…..15

RG-II

Pilot Assembly Inspection Cleaning and Replacement……………………………..18

RG-III

Piezo Igniter, Electrode Testing and Replacement……………………………..…..19

RG-IV

White Rodgers Mechanical Gas Valve Testing and Replacement…………….…..20

RG-V

Electronic Gas Control Testing, Disassembly, and Replacement…………………..25

RG-VI

Burner Operation Inspection, Adjustment, Cleaning, and Replacement…………..35

RG-VII

Resettable Thermal Switch Testing and Replacement………………………..….…..37

RG-VIII

ScreenLok

Flame Arrestor Cleaning………………………………………………..39

RG-IX

Diptube and Anode Inspection and Replacement……………………………….…..40

RG-X

Parts Diagram……………………………………………………………………….…..42

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Notes………..…………………………………………………………………………...43

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Содержание RG130T*X Series

Страница 1: ...alified service providers Models Covered by This Manual RG130T N X RG140T N X RG150T N X RG140S N X RG150L N X RG150S N X LG255H N X LG275H N X LG250H65 N X RG2100H N X Denotes Warranty Years RG230S N...

Страница 2: ...mbly Inspection Cleaning and Replacement 18 RG III Piezo Igniter Electrode Testing and Replacement 19 RG IV White Rodgers Mechanical Gas Valve Testing and Replacement 20 RG V Electronic Gas Control Te...

Страница 3: ...are heat producing appliances To avoid damage or injury do not store materials against the water heater or vent air intake system Use proper care to avoid unnecessary contact especially by children wi...

Страница 4: ...s in the very bottom of the corrosion resistant combustion chamber The air then travels up through the oriented flame arrestor plate louvers where the velocity of the air is increased and its directio...

Страница 5: ...ch channel locks open end wrenches 3 8 7 16 1 2 12 crescent wrench allen wrench set screw drivers common Phillips 1 4 nut driver pliers common needle nose socket set side cutters wire cutters wire str...

Страница 6: ...mbination thermostat gas valve 7 Resettable thermal switch has opened 1 Check connection at combination thermostat gas valve Proper tightness should be finger tight a 1 4 turn 2 Inspect thermocouple t...

Страница 7: ...oper operation 3 Check gas supply and line pressure 1 See Service Procedure RG VIII 2 See Service Procedure RG V Not enough hot water 1 Combination thermostat gas valve set too low for desired water t...

Страница 8: ...ermostat is satisfied One flash every second Not an error Indicates main valve is open and main burner is lit Thermostat is calling for heat Water heater operating normally and is in heat cycle Solid...

Страница 9: ...eady at the desired setting the water heater is satisfied 1 Gas control is powered and waiting for setpoint knob to be turned to a water temperature setting 2 Water heater is satisfied and operating n...

Страница 10: ...second pause Temperature sensor fault 1 Damage to the temperature sensor resistance is out of range or sensor is unplugged 2 Faulty gas control 1 See Service Procedure VI 2 Replace gas control Six fla...

Страница 11: ...ol will automatically shut main burner off when water temperature reaches the setpoint temperature Normal operation Two flashes and three second pause LED yellow Low thermopile voltage main valve not...

Страница 12: ...OMMENDED PATTERN FOR RTV SEALANT ENLARGED VIEW OF FLANGE AREA PLACE FLANGE SECTIONS FIRST VIEW WITH GASKETS IN PLACE EXPANDED VIEW Fully inspect inner door gaskets for the following Step 4 Inner Door...

Страница 13: ...drive screws from Step 3d secure left side inner door in place DO NOT OVER TIGHTEN SCREWS Position thermocouple pilot tube and piezo wire against left side inner door flange gasket DO NOT ROUTE THROUG...

Страница 14: ...ustion opening Secure right side inner door using two 2 1 4 hex drive screws from Step 3b DO NOT OVER TIGHTEN SCREWS Verify both left and right sides of the inner door are properly positioned and seal...

Страница 15: ...will not stay lit hold the pilot button located on the combination thermostat gas valve down during this test Using a multimeter capable of measuring millivolts connect one lead using an alligator cli...

Страница 16: ...otate clockwise to the OFF position Step 2 Step 3 Step 4 Step 5 Step 6 Step 7 Step 8 Remove the outer jacket door Remove the right side of inner door per Service Procedure RG I Steps 3a through 3c Dis...

Страница 17: ...table thermal switch must be tested Refer to Service Process RG III If resettable thermal switch is closed replacement of pilot assembly is recommended following Service Procedure RG III Turn knob to...

Страница 18: ...pilot assembly b Remove pilot tube and pilot orifice c Inspect pilot orifice for blockage must be cleaned or replaced Honeywell White Rodgers Electronic pilot orifice not replaceable replace pilot as...

Страница 19: ...Hold the other end of the jumper by the wire insulation or using an insulated tool next to an unpainted surface such as the feedline or gas valve and depress the piezo igniter If there is a spark the...

Страница 20: ...gas is 10 0 0 5 W C a If pressure is O K set gas valve to OFF remove manometer and pressure tap and replace pressure tap plug Check for gas leaks before placing water heater back in operation b If pre...

Страница 21: ...valve Step 2 Using a multimeter capable of measuring ohms or continuity attach one lead using an alligator clip to the pilot tube Insert the other lead fully into the magnet opening be sure the lead...

Страница 22: ...slightly and rotate clockwise to the OFF position Turn off water supply and drain the water heater completely Remove the outer jacket burner access door Right side inner door removal a Disconnect rese...

Страница 23: ...t for the following Tears Missing material Cracks Dirt or debris Gasket adhesion to inner door Other imperfections that will inhibit proper seal Material left on combustion chamber If the gasket is no...

Страница 24: ...mbustion chamber are aligned with the right side inner door slotted openings Verify seal integrity around the combustion opening Secure right side inner door using two 2 hex drive screws from Step 6b...

Страница 25: ...to the OFF position Remove pressure tap plug 3 16 allen wrench and install 1 8 NPT pipe coupling and pressure tap Connect manometer to pressure tap Follow instructions located on the lighting instruct...

Страница 26: ...o the OFF position Step 2 Turn off gas supply to the water heater Step 3 Disconnect the gas supply line from the gas control Step 4 Disconnect the piezo igniter wire Step 5 Remove the gas control cove...

Страница 27: ...clip Disconnect temperature sensor Release lock tab HONEYWELL COVER REMOVAL cont Step 7 Disconnect the temperature sensor from the control board and remove the wire from the temperature sensor wire r...

Страница 28: ...perature sensor wires HONEYWELL VALVE BODY REMOVAL AND TEMPERATURE SENSOR REMOVAL Step 1 Disconnect the burner and pilot tubes per Service Procedure RG II Step 2 Remove the valve body by removing the...

Страница 29: ...by pulling apart as illustrated below Step 5 To reassemble the gas control follow the previous steps in reverse order Once the gas control is reassembled the burner assembly is reinstalled and the gas...

Страница 30: ...rol knob to a desired setpoint Step 2 Observe green light indicator Does status code 4 four flashes three second pause appear a If no resume normal operation b If yes continue with Step 3 Step 3 Follo...

Страница 31: ...sensor would be 8449 see shaded area NOTE Sensor resistance increases as the temperature decreases Sensor Resistance at Various Temperatures WARNING Stored water may be HOT when performing the follow...

Страница 32: ...s damage to the gas control may occur If necessary use a length of 1 2 NPT pipe threaded into gas inlet of gas control _________________________________________________________________________________...

Страница 33: ...ssing material Cracks Dirt or debris Gasket adhesion to inner door Material left on combustion chamber Other imperfections that will inhibit proper seal If the gasket is not affected by any of the abo...

Страница 34: ...om Step 6b DO NOT OVER TIGHTEN SCREWS Verify both left and right sides of the inner door are properly positioned and sealed against the combustion chamber Step 10 Reconnect two 2 red wire leads from p...

Страница 35: ...or assembly per Service Procedure RG I Steps 1 through 3c Disconnect the main burner feed line pilot tube and thermocouple thermopile from combination thermostat gas valve and remove burner assembly f...

Страница 36: ...h and compressed air clean the burner plate and feedline then reassemble all components Inspect combustion chamber area of heater prior to reinstallation of burner assembly If cleaning is required ref...

Страница 37: ...ending on model An open switch can be reset by depressing the red colored button located at the center of the switch The overheating condition must be determined prior to putting the heater back in se...

Страница 38: ...e thermal switch in place Be sure contact surface of resettable thermal switch and inner door are free of any debris Secure resettable thermal switch into place using screws from Step 4 DO NOT OVER TI...

Страница 39: ...d threads L P control uses left hand thread Clean ScreenLok Flame Arrestor using stiff brush and compressed air to remove any scale or other debris accumulation Using a soft brush clear jacket opening...

Страница 40: ...Hydro jets located near the bottom of the dip tube should be open and free of any blockage Theanti siphon hole located approximately 6 in from the bottom of nipple should be free of any blockage Any d...

Страница 41: ...ds Visually inspect outlet nipple anode Outlet nipple anode should show signs of depletion this is normal If depletion is 1 2 of the original anode diameter approximately 5 8 diameter replacement is r...

Страница 42: ...6D Gas Control White Rodgers Electronic 25 Pilot Assembly LP 7 Piezo Igniter White Rodgers Mechanical 26 Pilot Orifice LP 8 Brass Drain Valve 27 Thermocouple Thermopile LP 9 Screw 8 18 x 3 4 Hex Washe...

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