Bradford-White Corp EFR160T120*(EN, X)(A)(2), EF100T250(E)*(N Wiring Diagram Ignition Module

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For models prior to CF serial numbers

For models prior to CF serial numbers

Lockout Conditions

If normally closed pressure switch contacts open during burner operation, gas valve closes, burner shuts off. Blower restarts after 30 seconds and runs 5 minutes to wait for pressure switch to close. If not, locks out.

The system will go into lock out mode for the following reasons:

-Pressure switches stuck open or closed.

a)Check for exhaust or intake obstructions.

b)Check for compliance with vent tables.

c)Check for evidence of moisture or condensate present in pressure switch tubing or pressure switch.

-No ignition after 3 attempts.

a)Check gas pressures.

b)Igniter resistance too high (lower resistance preferred <150 Ohms).

c)Check venturi screw adjustment (6 ½ turns from bottom)

d)Flame sense micro amp not present (1 to 5 micro amps required).

Lock out reset is accomplished by shutting OFF the line voltage to the system or opening the 24V thermostat circuit for at least 2 seconds.

System will automatically reset lockout after 1 hour of continuous call for heat from the thermostat. Three ignition trials will be attempted each hour until the thermostat is satisfied.

Ignition Module Specifications

Control Functions:

-Ignition & heating functions in response to thermostat.

-Hot surface ignition using a microprocessor to control timing, flame sensing using flame rectification & ignition retries.

-Monitoring of system pressure switches and limit switches.

-Control of gas valve, inducer motor, and hot surface igniter element based on thermostat demand and status of safety inputs.

-Diagnostic indicators to provide information on power to control and control status.

-Non-interchangeable polarized plug-in connectors for all interconnections.

Control Inputs:

Control Outputs:

- Thermostat call for heat.

- Inducer motor

- Limit Switch Circuit (normally closed)

- Hot surface igniter

- Pressure Switch Circuit (normally open)

- Gas valve

- Flame sensing.

- Status indicator LEDs

- Low voltage supply.

Power - Green

- Line voltage supply.

Purge - Red

 

Igniter - Red

 

Valve - Red

 

Flame - Red

WIRING DIAGRAM

IGNITION MODULE

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Contents Service Manual Bradford White Page Page Page Dimensions Inches Page Page PVC, Cpvc For models prior to CF serial numbers Wiring Diagram Ignition Module For models starting with CF serial numbers and later Wiring Diagram Ignition Module Page CONNECTION/WIRING Diagram Light burned out Replace switchRepair/replace wire Harness to switchPressure Switch See Blower Testing Only power light Is on and water heater Will not functionSwitch. see Exhaust Pressure Switch See Thermostat CircuitDisplay System Observation For models with Direct Spark IgnitionSection Combustion System From previousReplace blower Blower. Is 110-120 VAC present?Pressing Select button will change display to next mode Max Setpoint value Water Heater Display Setpoint Display/Change Software Version Display only Max Setpoint continues to flash while making adjustments ExitingSELECTServiceSETMode To Display Flame Sense Current of the Pilot Flame Sensor Select SET Setpoint Idle Status Operational Idle Status Operational Error Codes and Error History Display To view previous error codes ExitingSELECTServiceSETMode Honeywell Integrated Control Error Code Resetting Error Codes in Hard Lockout Condition Next Unplug or disconnect electrical power to the water heaterDo not operate water heater without See Thermostat Potentiometer OK, thermostat is Calling for heatSee Thermostat Sensor Replace harnessAppendix a Refer to ignition module Red Wires Temperature SensorWiring Diagram Thermostat Board Replacement Procedure Hot Surface IgnitionDisconnected using a multi-meter Thermostat Potentiometer Replacement ProcedureVolt potential exposure. Isolate Thermostat Sensor Thermister Replacement ProcedureHeater not running See illustrations at right Venturi Adjustment Inlet gas Pressure tapSupply piping Gas pressure. Is it stableClear obstruction See Ignition ModuleLight? Minimum ¾ NPT. Schedule 40 black Iron PipeRecommended Control Board Refer to control board illustrationGas Connection PVC vent connection Combustion System Removal ProcedureGas valve Wire harness Burner mounting Screw TotalGas Combustion System Replacement ProcedureBurner Tube Removal Procedure Burner Tube Inspection Burner Tube Replacement ProcedureGas Valve Replacement Procedure Black & White Wires For Direct Spark Black wires atBlack wire leading to Is collector high limit switch Control boardBlower Replacement Procedure See photo below Check Purge LED status On ignition module Only power LED is on, or Purge LED flashingReset button Refer to Check Collector Pressure See next Is there continuity Through REDEF60T150,EF100T250 +1.22 EF60T125 +2.08 EF100T300 +0.55 Check Collector PressureCheck exhaust collector pressure at the exhaust EF60,100T199 +2.58 EF100T150 +1.50Exhaust pipe Pressure tap location Exhaust Pressure Switch Replacement ProcedureExhaust collector Energize? Switch operationError code 29 again? Support Reset buttonPressure tap location Exhaust tube At bottom of heater Check Exhaust Tube PressureIs value negative or Vent tablesExhaust Tube Pressure tap location Check harness Connection from igniter To ignition module Hot surface Igniter Testing ProcedureCheck during igniter warm up period Screws Hot surface Igniter Replacement ProcedureSensor Flame Sensor Testing ProcedureGasket Check continuity from tip of flame sensor NFlame Sensor Replacement Procedure Spark Rod Gap Inspection and Adjustment Spark Rod Replacement Procedure Ignition Module Located on control panel Ignition Module Replacement ProcedureIdentify wires for Step Disconnect harness P1 & P2 From ignition module Transformer Replacement ProcedureStep Pressure tap Call for technical support Does Blower Energize?Or more? Step Remove Mounting screws Intake Pressure Switch Replacement ProcedureStep Disconnect red wires Button on high System OK Reset buttonVent Safety Switch Replacement Procedure Disassembly Procedure for Access to Anodes & Flue Baffles Anode inspection and replacement Flue baffle inspection and replacement Powered Anode Replacement EF100T399 models only Collector Cover Installation Procedure Vent tables Spark Gap Gas Line Gas Pressure VenturiModels prior to CF serial number Latch Assy Electronic Control Module For models with CF serial or later Combustion Surround Assy. specify Electronic Control Module For models with Direct Spark Ignition Honeywell Control Display 10C 11C 12C 13C BTU/H Page Page Parts@bradfordwhite.com Techserv@bradfordwhite.com

EFR160T120*(EN, EF100T250(E)*(N, EF100T399(E)*(N, EF100T300(E)*(N, EF60T125(E)*(N specifications

Bradford-White Corporation is a leading manufacturer of water heating solutions, known for its high-quality and durable products. Among its extensive product lineup, the EF60T150(E)*(N), EF100T150(E)*(N), EF60T199(E)*(N,X)(A)(2), and EF100T199(E)*(N) models stand out for their impressive features and technologies that cater to both residential and commercial water heating needs.

The EF60T150(E)*(N) model is designed for medium to large households, providing a reliable hot water supply. It features a 60-gallon tank with a first-hour delivery rate that ensures ample hot water, making it ideal for simultaneous usage in multiple applications. This water heater operates on natural gas, boasting high energy efficiency ratings due to its advanced burner technology. The environmentally friendly design reduces greenhouse gas emissions while delivering consistent performance.

Similarly, the EF100T150(E)*(N) model provides an even larger capacity of 100 gallons, addressing the hot water demands of larger families or commercial establishments. It employs Bradford-White's Hydrojet Total Performance System, which minimizes sediment buildup and optimizes hot water output. This model also features a patented Vitraglas lining that protects the tank from corrosion, extending its lifespan and enhancing reliability.

On the other hand, the EF60T199(E)*(N,X)(A)(2) and EF100T199(E)*(N) models offer advanced technology with their unique "N" designation, indicating that they are equipped to handle more extensive heating requirements efficiently. The EF60T199 model, with its 60-gallon capacity, and the EF100T199, with 100 gallons, incorporate enhanced insulation to reduce heat loss and improve energy efficiency. Both models are designed for easy installation and maintenance, making them user-friendly for both homeowners and technicians.

Additionally, these water heaters feature advanced electronic ignition and controls that allow for precise temperature regulation and easy monitoring. The intuitive user interface simplifies operation, while built-in safety features ensure reliable and secure hot water delivery.

Overall, Bradford-White's EF series of water heaters, including the EF60T150(E)*(N), EF100T150(E)*(N), EF60T199(E)*(N,X)(A)(2), and EF100T199(E)*(N), exemplify the company's commitment to quality and innovation. With their robust performance, energy efficiency, and advanced technologies, these models offer dependable hot water solutions tailored to meet the diverse needs of today's consumers. Whether for residential or commercial use, Bradford-White continues to set the standard for excellence in water heating technology.
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