American Water Heater 6510319 Replacement Parts, Removing the Manifold Assembly, Gas Burner

Left Hand Thread

Thermocouple

Igniter

Button

Figure 21

Replacement Parts

The following maintenance procedures are for the Flame Guard® Safety System components and should be performed by a qualified service technician.

Replacement parts may be ordered through your plumber or the local distributor. Parts will be shipped at prevailing prices and billed accordingly. When ordering replacement parts, always have the following information ready:

1.model, serial, and product number

2.type of gas

3.item number

4.parts description

See page 28 for a list of available repair parts.

Removing the Manifold Assembly

1.Turn off the gas to the water heater at the manual shut-off valve (Figure 3).

2.Turn the gas control knob on the combination gas control valve/thermostat

clockwise to the “OFF” position (Figure 19).

Removing the Burner from the Manifold Assembly

Natural Gas Burner (Low Nox)

1.Take off the burner by removing the two (2) screws located underneath the burner.

2.Check the burner to see if it is dirty or clogged. The burner may be cleaned with soap and hot water (Figure 23A).

Figure 23A		Manifold Door
Natural Gas (Low Nox)		Assembly
Burner Assembly
	Two Piece Wire	Igniter Wire
Burner	Connector

		Pilot
		Tube
		Manifold
		Tube
	Manifold
	Door
	Gasket	Thermocouple
	Pilot Bracket	Viewport
Thermocouple
Retainer Clip	Pilot Assembly	Pilot
		Tube
	Thermocouple

3.Remove the outer door.

4.Remove the two screws securing the manifold door assembly to the skirt (Figure 22).

5.Disconnect the thermocouple (left-hand thread), pilot tube, the igniter wire from the igniter button, and manifold tube at the thermostat. (Figure 21.) Note: L.P. gas systems use reverse (left- hand) threads on the manifold tube.

U N I T R O L

WARNING

READ ALL INSTRUCTIONS

BEFORE LIGHTING

WA

T I

R

T

U

M

O

A

O

H

C

R

N

O

T

H

S

Y

B

H W

OT TER

E

R

E

E

A

R

RI

T

I

A S

J

U

V

T

ER

RE

IN

A

S

S

O

NC

C

H

K

F

LD

ITA

A

SCA

W

NO

Igniter

Wire

Pilot

Tube

Manifold

Tube

Manifold Door

Assembly

Burner Pilot Assembly

Manifold

Tube

Screws

L.P. Gas Burner

1.	Separate the pilot bracket from the L.P. burner by
	removing screw.
2.	Loosen set screw located on top of the L.P. burner

6.Grasp the manifold tube and push down slightly to free the manifold, pilot tube, and thermocouple.

7.Carefully remove the manifold assembly from the burner compartment. Be sure not to damage internal parts.

Figure 22

Burner Assembly

RemovalPiezo

Gas Valve /

Igniter

near the manifold door. Carefully, pull the burner

away from the manifold door assembly.

3. Check the burner to see if it is dirty or clogged. The

burner may be cleaned with soap and hot water

(Figure 23B).

Figure 23B	Manifold Door	Manifold Door
L.P. Gas Burner		Assembly
Assembly	Gasket
	Two Piece Wire
	Connector

Thermostat

Thermocouple

Button

Burner	Igniter Wire
	Pilot
Screws
	Tube

		Pilot Tube
	WARNING
Manifold	I	O
Tube
Viewport		Two Piece Wire
		Connector

Manifold

Door

Manifold

Screw (2)

Manifold

Tube

Thermocouple

Viewport Pilot Assembly

Thermocouple Pilot Bracket

Retainer Clip

21