American Water Heater 6510238 Combustion Air Supply and Ventilation, Vent Pipe System

Combustion Air Supply and Ventilation

Important: Air for combustion and ventilation must not come from a corrosive atmosphere. Any failure due to corrosive elements in the atmosphere is excluded from warranty coverage.

Vent Pipe System

This is a direct vent water heater which draws its combustion air from outside of the structure and exhausts all products of combustion to the outside of the structure.

Through-the-wall installations require locating the water heater next to an outside wall. All necessary components are supplied for the standard through-the-wall installation. Optional vertical and horizontal extension kits are available for installations that exceed the standard horizontal and vertical distances (see table at right). Only one vertical and one horizontal kit can be used on the same installation.

Through the Wall Venting

1.Make sure a proper location has been selected for the water heater installation. Consider the following:

·Water piping

·Gas Piping

·Access for service

·Proper clearance for combustibles

·Drainage for the temperature and pressure relief valve and drain pan.

·Vent cap termination

2.Determine the “A” dimension for your specific water heater by referencing figure 7. Cut a 6 inch opening through the wall in the location as shown. Determine the location of electrical wiring, pipes, or wall studs before cutting.

NOTE: Installations requiring an “A” dimension (vertical height) greater than what is shown as standard in the table will require the use of a vertical extension kit (See “Vertical Install Kit” on Page 10).

Figure 7: “A” & “B” Dimensions

“A”

“B”

NOTE:

1.Dim. “A” measured from center of cutout to bottom of heater.

2.Dim. “B” measured from center of heater to outside of wall.

KIT		CAPACITY
	40 GALLON			50 GALLON
	“A”	“B”		“A”	“B”
STANDARD	62.75”	15.75	- 24.50”	71.00”	15.75 - 24.50”
HORIZONTAL	62.75”	27.00	- 38.00”	71.00”	27.00 - 38.00”
VERTICAL	62.75 - 89.75”	15.75	- 24.50”	71.00 - 98.00”	15.75 - 24.50”
BOTH	62.75 - 89.75”	27.00	- 38.00”	71.00 - 98.00”	27.00 - 38.00”

3.If you are not using the vertical extension kit, place the 3” elbow on the flue pipe reducer on the air box and point it in the desired direction (See Figure 8). Press it firmly downward until seated. Drill 4 holes 90° apart with a 1/8” drill bit and fasten the four #8 sheet metal screws provided. Apply silicone sealant to the joint. Install the 5” elbow over the 3” elbow and seat it into the collar on the air box. Drill 4 holes 90° apart with a 1/8” drill bit and fasten the four #8 sheet metal screws provided. Apply silicone sealant to the joint. Place the inner wall cover plate over the 5” elbow. This plate will be positioned later.

	Figure 8: Vertical Installation
3” Elbow		5” Pipe
			Inside Cover
1		3” Elbow	Plate
	Screws &
	Sealant
		2	Screws
			& Sealant

9