Bradford White Water Heater M4XRTW65T6FBN

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.

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 blockages.

Check that hydro-jet slots are open and free of any blockage.

Reinstall inlet nipple/dip tube into water heater after inspection or replacement.

Connect nipple to plumbing system, resume water supply and refill with water.

Position gas control power switch to 'OFF' position

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

Carefully remove pressure switch from blower housing

Disconnect tubing from pressure switch

Disconnect yellow wires from pressure switch

Reconnect wires to new pressure switch

Reconnect tubing to new pressure switch

Carefully position pressure switch into blower housing

Cast Iron Burner Air Shutter Adjustment

Take necessary precautions to prevent personal injury

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

Loosen the air shutter nut and adjust the air shutter for proper burning

Is the flame as blue as possible with a minimum of yellow tips?

Does the burner operate as adjusted with the inner door closed?

Repeat air shutter adjustment if necessary

Simulated Resistive Device Testing

Position power switch on gas control to the 'OFF' position.

Disconnect simulated resistive device from gas control.

Check resistance of simulated resistive device using a multi-meter set to the ohms setting.

Pilot Inspection, Testing and Replacement

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 nut (7/16 wrench) and feedline nut (¾ wrench) from gas control.

Disconnect igniter/flame sense wire from gas control.

Remove burner assembly from combustion chamber.

Remove pilot assembly from feedline (¼" nut driver).

Visually inspect igniter/flame sense wire for damage. Replace pilot if damage is found.