Tools Required For Service; Features - Bradford White EF120T4003NA3 Service Manual

Manometer: Two types available, a liquid "U" tube type or a digital (magnehelic) type. This device is
used to measure gas and/or air pressures and vacuum.
Multi-Meter: A digital type is strongly recommended. This device is used to measure electrical values.
The meter must have the capability to measure volts AC, volts DC, amps, micro-amps, and ohms.
Thermometer: Used to measure water temperature. An accurate thermometer is recommended.
Water Pressure Gauge: Used to measure water supply pressure, and to determine tank pressure by
adapting to the drain valve of the heater.
Jumper Leads: A length of wire (12 in. minimum) with an alligator clip at both ends.
Various Hand Tools: Pipe wrench, channel locks, open end wrench set, 12 in. crescent wrench, Allen
wrench set, Torx bit set, screwdrivers (common & Phillips), long reach (12 in.) magnetic tip Phillips
head screw driver #2 tip, 1/4 in. nut driver, pliers (common & needle nose), socket set including a 1-
1/16 deep well socket, wire cutters, wire strippers, wire crimpers, torpedo level, small shop vac, step
ladder, and flashlight.
Features of the Resideo Integrated Control System
• Water heater digital display on control board for setting and displaying the temperature setpoint.
Pressing temperature UP and DOWN buttons changes the temperature setpoint. Temperature
format may be displayed in °F or °C.
• Single control board with plug-in wiring controls temperature, ignition, and blower operation.
• Plug-in wiring reduces chance of miswiring.
• Burner ignition with direct spark ignition - A high voltage spark occurs between the spark and ground
rods to ignite the gas.
• Water heater digital display will show diagnostic codes in the event the water heater needs servicing.
Aids in diagnosing and servicing the water heater.
• Water heater digital display can show previous error code history to further aid in servicing the water
heater.

Tools Required for Service

Features

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