Bradford-White Corp EF60T125(E)*(N, X)(A)(2) service manual Transformer Replacement Procedure, Step

Page 68
Step 6
Remove transformer
mounting screws

Transformer Replacement Procedure

Step 1. Position main power switch to “OFF”.

Step 2. Disconnect (Unplug) water heater from 120 Volt power source.

Step 3. Un-latch & remove surround cover from top of water heater.

WARNING

120 volt potential exposure. Isolate the

appliance and reconfirm power is disconnected using a multi-meter.

Step 4. For Hot Surface Ignition models, refer to ignition module illustration below, Disconnect wire harness P1 labeled “PRIMARY” and P2 labeled “SECONDARY” from ignition module.

Step 5. For Hot Surface Ignition models, Disconnect secondary leads (blue & yellow wire) from thermostat board. Note the blue wire is connected to

24 volt “HOT” terminal. (see photo below) For Direct Spark Ignition models, Disconnect primary leads (black & white) and secondary leads (blue & yellow) from the transformer. (leads are different sizes to prevent interchanging)

Step 5

Disconnect blue & yellow wire from thermostat board. Note blue wire is connected to 24 volt “HOT” terminal.

Thermostat board

Step 3

Disconnect harness

“P1” & “P2”

from ignition module

Ignition module

Step 6. Remove the 2 screws ( short Phillips screw driver) holding the transformer in place and remove transformer from control panel. (see photo below)

Step 7. Install new transformer and secure in place with screws from step 6.

Step 8. For Hot Surface Ignition models, Reconnect wire harness P1 & P2, connections are non-interchangeable to insure proper reconnection.

For Direct Spark Ignition models,

Reconnect primary and secondary wires to transformer. (leads are different sizes to prevent interchanging)

Step 9. For Hot Surface Ignition models, Reconnect blue & yellow wire leading from the P2 connection on ignition module to

thermostat board. Note the blue wire must connect to the 24 volt “HOT” terminal. (see photo at right)

Step 10. Restore 120 volt power supply to water heater and confirm proper operation following the lighting instructions on the lighting instruction label or the lighting instruction located in the installation and operating instruction manual.

Step 11. Replace surround cover on top of water heater.

Thermostat

board

24 volt common,

yellow wire connection

24 volt Hot,

blue wire connection

68

68

Page 67 Page 69
Image 68
Page 67 Page 69
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 Replace switch Repair/replace wireHarness to switch Light burned outOnly power light Is on and water heater Will not function Switch. see ExhaustPressure Switch See Thermostat Circuit Pressure Switch See Blower TestingSystem Observation For models with Direct Spark Ignition DisplayFrom previous Replace blowerBlower. Is 110-120 VAC present? Section Combustion SystemPressing 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 Unplug or disconnect electrical power to the water heater NextDo not operate water heater without OK, thermostat is Calling for heat See Thermostat SensorReplace harness See Thermostat PotentiometerAppendix a Red Wires Temperature Sensor Refer to ignition moduleThermostat Board Replacement Procedure Hot Surface Ignition Wiring DiagramThermostat Potentiometer Replacement Procedure Disconnected using a multi-meterThermostat Sensor Thermister Replacement Procedure Volt potential exposure. IsolateVenturi Adjustment Inlet gas Pressure tap Supply pipingGas pressure. Is it stable Heater not running See illustrations at rightSee Ignition Module Clear obstructionLight? Minimum ¾ NPT. Schedule 40 black Iron PipeRecommended Refer to control board illustration Control BoardCombustion System Removal Procedure Gas valve Wire harnessBurner mounting Screw Total Gas Connection PVC vent connectionCombustion System Replacement Procedure GasBurner Tube Removal Procedure Burner Tube Replacement Procedure Burner Tube InspectionGas Valve Replacement Procedure For Direct Spark Black wires at Black wire leading toIs collector high limit switch Control board Black & White WiresBlower Replacement Procedure Only power LED is on, or Purge LED flashing Reset button Refer to Check Collector Pressure See nextIs there continuity Through RED See photo below Check Purge LED status On ignition moduleCheck Collector Pressure Check exhaust collector pressure at the exhaustEF60,100T199 +2.58 EF100T150 +1.50 EF60T150,EF100T250 +1.22 EF60T125 +2.08 EF100T300 +0.55Exhaust pipe Pressure tap location Exhaust Pressure Switch Replacement ProcedureExhaust collector Switch operation Error code 29 again? SupportReset button Energize?Check Exhaust Tube Pressure Is value negative orVent tables Pressure tap location Exhaust tube At bottom of heaterExhaust Tube Pressure tap location Check harness Connection from igniter To ignition module Hot surface Igniter Testing ProcedureCheck during igniter warm up period Hot surface Igniter Replacement Procedure ScrewsFlame Sensor Testing Procedure GasketCheck continuity from tip of flame sensor N SensorFlame Sensor Replacement Procedure Spark Rod Gap Inspection and Adjustment Spark Rod Replacement Procedure Ignition Module Replacement Procedure Ignition Module Located on control panelIdentify 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 System OK Reset button Button on highVent 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 Gas Line Gas Pressure Venturi Spark GapModels 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.
Top Page Image Contents