Tools Required For Service; Features - Bradford White EF120T4003N3 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 Honeywell 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 jumps from the spark rod to the
burner surface 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.
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Tools Required for Service

Features

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