A.O. Smith Water Heater Draft Hood Installation, Sldt----\ X-- Ac Ettdp --Sldt

GABLE VENT

	j	TO OUTDOORS
					ALTERNATIVE
		INSTALLABOVE			OPENING
		INSULATION			LOCATION
CONFINED					1SQ. INCH
	•	OUTLET			CONFINED
					PER3000 BTUH
		AIR	TO
					SPACE
	ATTIC		1	SQ.
		INCH	PER
		4000	BTUH

ALTERNATE				AIR FROM
AIR	INLET
1 SQ.	INCH	PER		OPEN	_1_
4000 BTUH				FOUNDATION	"_
				VENT
ALL	AIR	FROM OUTDOORS:	INLET	AIR FROM VENTILATED
CRAWL		SPACE/OUTLET	AIR TO	VENTILATED	ATTIC

FIGURE 6.

•GABLE VENT TO OUTDOORS

_"INSTALL ABOVE

INSULATION

OUTLET AIR _TO ATTIC

1 SQ. INCH PER 4000

BTUH

INLET AIR DUCT 1 SQ. INCH PER 4000 BTUH

12" MAXIMUM

ALL AIR FROM OUTDOORS THROUGH VENTILATED ATTIC

FIGURE 7.

2000 BTUH

CONFINED

SPACE

1 SQ. INCH PER

2000 BTUH

ALL AIR FROM OUTDOORS USING HORIZONTAL DUCTS

ALL AIR FROM OUTDOORS - USING A SINGLE PERMANENT OPENING

FIGURE 8B.

Vent Pipe System

This water heater uses a non-direct, single-pipe vent

system to remove exhaust gases created by the burning of fossil fuels. Air for combustion is taken from the immediate

water heater location or is ducted in from the outside (see "Combustion Air Supply and Ventilation").

This water heater must be properly vented for the removal of exhaust gases to the outside atmosphere. Correct

r'',,,,installation of the vent pipe system is mandatory for the proper and efficient operation of this water heater and is

an important factor in the life of the unit.

The vent pipe must be installed according to all local and state codes or, in the absence of local and state codes, the "National Fuel Gas Code", ANSI Z223.1(NFPA 54)-current edition. The vent pipe installation must not be obstructed so as to prevent the removal of exhaust gases to the outside atmosphere.

IMPORTANT: The use of vent dampers is not recommended by the manufacturer of this water heater. Although some vent dampers are certified by CSA International, this certification applies to the vent damper device only and does not mean they are certified for use on this water heater.

U.L. recognized fuel gas and carbon monoxide (CO) detectors are recommended in all applications and should be installed using the manufacturer's instructions and local codes, rules, or regulations.

IMPORTANT: If you lack the necessary skills required to properly install this venting system, you should not proceed, but get help from a qualified technician.

Draft Hood Installation

L SCREWS (FOUR PROVIDED)

b_I--DRAFT HOOD

SLDT----\ X-- AC ETTDP' --SLDT

INSTALL THE DRAFT HOOD WITH

THE FOUR SCREWS PROVIDED.

FIGURE 8A. FIGURE 9

13