Bradford White Water Heater EF60T125E3NA2

Service Procedure IX — Spark Rod Gap Inspection and Adjustment (Direct Spark Ignition models)

Remove the combustion system per the Combustion System Removal procedure

Measure the spark gap between the spark rod and burner tube

Is the spark gap within the acceptable range of 3/16 in. to 1/4 in.?

Carefully bend the spark rod if the gap is out of range

Re-measure to confirm the gap is within 3/16 in. to 1/4 in. after bending

Reinstall the combustion system

Check several ignitions to confirm the burner lights smoothly

Service Procedure XIII — Vent Safety Switch Testing and Replacement

120-volt potential exposure; use caution making voltage checks.

Confirm the exhaust collector compartment is not overheating (350°F) before resetting the switch; call technical support if there is evidence of overheating.

Locate the harness connection and check continuity through the grey lead wires of the heater-side harness; call technical support if there is none.

If continuity is present, depress the reset button on the high-limit switch and check for continuity across it, replacing the vent safety switch if there is none.

Reset the heater and observe a heating cycle to confirm the switch does not reopen before 350°F is reached; replace the switch if it opens prematurely, and do not operate the heater if temperature exceeds 350°F without contacting technical support.

Service Procedure III — Burner Tube Inspection & Replacement

Take precautions to avoid injury as heater components can be hot during this procedure

Turn the main power switch off and unplug the water heater, then turn off the gas supply

Remove the surround cover, then disconnect the gas connection, PVC venting, wire harness, and silicone tubing from the gas valve

Disconnect the wire harness from the blower assembly

Remove the two screws holding the hot surface igniter and flame sensor and carefully remove them (for Direct Spark Ignition models, remove the spark rod bracket screws and spark rod instead)

Remove the four nuts holding the burner transition, lift the blower/gas valve/transition assembly off, and set the gasket aside

Remove the burner tube from the burner mounting insert

Service Procedures VI — Exhaust Pressure Switch / Blocked Vent Pressure Switch Testing

Check if the purge LED or error code clears within 5 minutes

Check exhaust collector pressure at the pressure tap with a manometer

Inspect the combustion system area and control panel for corrosion or excessive heat

Inspect inside the combustion chamber for blockage or debris

Exhaust/Blocked Vent Pressure Switch Replacement

Slide back the rubber escutcheon and remove the service panel access cover

Service Procedure II — Combustion System Testing

Observe burner operation through the sight glass

Verify minimum gas supply piping size (3/4 in. NPT, or 1 in. NPT for EF100T399) and reconfigure piping if undersized

Confirm static inlet gas pressure is stable between 7 and 14 in. W.C.

Is the static inlet gas pressure stable?

For models with Hot Surface Ignition

Confirm the inlet gas pressure does not drop more than 2 in. W.C. during ignition

Does the igniter glow through the sight glass during warm-up?

Check for 120VAC at the ignition-module igniter terminals