Removing the Air Intake Chamber Box | A.O. Smith PCG2J5040T3NOV 100

AIR INTAKE CHAMBER BOX REMOVAL / REPLACEMENT

Important: Use only factory authorized replacement parts. If you lack the necessary skills to properly perform the installation, you should not proceed, but get help from a qualified service technician.

Tools required: Phillips Head Screwdriver.

Removing the Air Intake Chamber Box:

1.Set the gas control valve/thermostat to its lowest setting by pressing the “COOLER” and “HOTTER” buttons together at the same time holding for 1 second. Then press the “COOLER” button to the lowest setting (Figure 45).

2.Turn gas control switch to the “OFF” position (located right side of the gas control valve/ thermostat) and turn off the gas supply to the unit (Figure 46).

3.Disconnect the electric connection by unplugging the transformer from the wall outlet (Figure 46).

4.Remove the manifold cover/ outer door from the unit by depressing on the lower portion and pulling outward.

5.Unplug the 3-wire pressure switch/fan/sensor electrical connection of the wiring harness from the gas control valve/thermostat by depressing the lower portion of the snap clip to open and pulling down the connector (Figure 47).

6.Using a phillips head screwdriver remove the 2 screws of the air intake chamber screen (Note: save screws for reinstallation later) (Figure 48).

7.Remove the air intake chamber screen by lifting upward and outward (Figure 48).

8.Please take note of the wire position routing around the fan inside the air intake chamber as this wire positioning will need to be duplicated upon installation of the fan in the new intake chamber box.

9.Remove the 2 screws securing the fan inside the chamber (Note: save these screws for reinstallation later) (Figure 48).

10.Lift the fan up and outward to remove from the air intake chamber (Figure 48).

11.Locate the male to female electrical connection with close pin lock on wiring harness (the white connection approximately 12” from fan) (Figure 48).

12.To separate the electrical connection of the fan and wiring harness: press down on the back portion of the close pin lock of the electrical connection while pulling the connection in the opposite directions.

13.Using a phillips head screwdriver, remove the 4 screws securing the air intake chamber box to the water heater’s side (also keeping these screws in a safe place for reinstallation later) (Figure 48).

Figure 45.

HOTTER COOLER