SERVICE PROCEDURE D24-IVMain Burner & PilotRemoval and InspectionWARNINGHeater components may be HOT when performing the following steps in this procedure.Take necessary precaution to prevent personal injury.
Main Burner Removal
Step 1. Disconnect (un-plug) water heater from
electrical supply.
Step 2. Turn “OFF” gas supply to water heater.
Step 3. Rotate gas valve control knob to the “OFF” position
(see photo 17).
Step 4. Disconnect Gas supply line from the gas valve
(see photo 17).
Step 5. Disconnect wire leads from gas valve
(see photo 17).
Step 6. Disconnect white flame sense wire& orange ignition
wire from Ignition module (see photo 18).
Step 7. Removethe two burner rack mounting screws.
Step 8. Slide completeburner rack out from heater
(see photo 19).
Step 9. To install burner, reverse aboveprocedure.
Gas Valve
Control Knob
Gas Supply
Line
Gas Valve
Wire Leads Burner Rack
Mounting
Screw
Main Burner Inspection
Step 1. Burner tubes should be free of any flue
scale or other debris. Clean
burner tubesusing a stiff brush and/or
shopvac. Burner ports should have uniform
openings.Replacement is recommended for
burners where port area is deteriorated or
other unintended openingsare present.
Step 2. Insurepilot shield is in place (see photo 20).
Step 3. Inspect pilot positionto insure smooth burner
ignition from pilot flame. Pilot should be
mounted using the two mounting screws thru
the burner support bracket resulting in a level
pilot position.
19
Pilot
Shield
Page 12
17
20
18
Flame sense
wire
Ignition wire
12