Bradford White Water Heater M4XRTW65T6FSX

Cast Iron Burner Air Shutter Adjustment

Remove outer jacket door and slide inner door from left to right to open

Adjust air shutter for proper burning

Is the flame blue with a minimum of yellow tips?

Is the burner operation noisy or is there soot formation?

Close inner door and observe burner operation

Does the burner operate as adjusted in step 2?

Repeat air shutter adjustment if necessary

Dip Tube Inspection and Replacement

Position on/off switch of gas control valve to 'OFF' position and unplug water heater from wall outlet.

Turn off cold water supply to water heater.

Connect hose to drain valve of water heater and route to an open drain.

Open a nearby hot water faucet to vent heater for draining.

Open drain valve of water heater and allow heater to drain to a point below the inlet connection nipple.

Disconnect inlet nipple from plumbing system.

Remove inlet nipple/dip tube from the water heater using an appropriate tool such as a pipe wrench.

Visually inspect inlet nipple/dip tube for cracks and blockage.

Position gas control power switch to the “OFF” position and unplug heater from wall outlet.

Turn off gas supply to water heater.

Remove outer jacket door and slide inner door open from left to right.

Disconnect pilot tube (7/16 wrench) and feedline (¾ wrench) from gas control.

Disconnect igniter/flame sensor wire from gas control.

Remove burner assembly from combustion chamber.

Thoroughly inspect burner surface area and burner port area and remove any loose debris.

For cast iron burners, inspect for any debris build up inside burner casting.

Position power switch on gas control to the “OFF” position.

Remove the three screws from control access cover on blower assembly and remove cover.

Carefully remove pressure switch from blower housing.

Disconnect wire leads from pressure switch.

Use a multi-meter set to the ohms setting and check across pressure switch terminals with blower off.

Are switch contacts open? (no electrical continuity)

Position gas valve power switch to the “ON” position and adjust thermostat to call for heat.

Gas Control & Thermal Well Removal From Water Heater

Position gas valve power switch to the 'OFF' position and unplug heater from power supply.

Drain heater to a point below the gas control level.

Turn off gas supply to water heater and disconnect gas piping from gas control.

Disconnect wire harnesses and burner assembly from gas control.

Remove gas control & thermal well by rotating flats of Thermal Well counter clockwise (1-5/16" wrench).

Gas Control Removal From Thermal Well

Position gas control power switch to the 'OFF' position and unplug water heater from power supply.

Turn off gas supply to water heater and disconnect gas piping from gas control.