THE BOILER MUST NOT BE INSTALLED ON CARPETING.

THE BOILER SHOULD NOT BE LOCATED IN AN AREA WHERE IT WILL BE SUBJECT TO FREEZING.

THE BOILER SHOULD BE LOCATED NEAR A FLOOR DRAIN.

THE BOILER SHOULD BE LOCATED IN AN AREA WHERE LEAKAGE FROM THE BOILER OR CONNECTIONS WILL NOT RESULT IN DAMAGE TO THE ADJACENT AREA OR TO LOWER FLOORS OF THE STRUCTURE.

WHEN SUCH LOCATIONS CANNOT BE AVOIDED, A SUITABLE DRAIN PAN SHOULD BE INSTALLED UNDER THE BOILER. Such pans should be fabricated with sides at least 2-1/2" (6.5 cm) deep, with length and width at least 2" (5.1 cm) greater than the dimensions of the boiler and must be piped to an adequate drain. The pan must not restrict combustion air flow.

WARNING

THERE IS A RISK IN USING FUEL BURNING APPLIANCES IN ROOMS OR AREAS WHERE GASOLINE, OTHER FLAMMABLE LIQUIDS OR ENGINE DRIVEN EQUIPMENT OR VEHICLES ARE STORED, OPERATED OR REPAIRED. FLAMMABLE VAPORS ARE HEAVY AND TRAVEL ALONG THE FLOOR AND MAY BE IGNITED BY THE IGNITER OR MAIN BURNER FLAMES CAUSING FIRE OR EXPLOSION. SOME LOCAL CODES PERMIT OPERATION OF GAS APPLIANCES IF INSTALLED 18 INCHES (46.0 CM) OR MORE ABOVE THE FLOOR. THIS MAY REDUCE THE RISK IF LOCATION IN SUCH AN AREA CANNOT BE AVOIDED.

FLAMMABLE ITEMS, PRESSURIZED CONTAINERS OR ANY OTHER POTENTIAL FIRE HAZARDOUS ARTICLES MUST NEVER BE PLACED ON OR ADJACENT TO THE BOILER.

OPEN CONTAINERS OF FLAMMABLE MATERIAL SHOULD NOT BE STORED OR USED IN THE SAME ROOM WITH THE BOILER.

If the boiler is installed above the level of heating system terminal units, a low water cutoff device must be installed in the boiler outlet at the time of installation.

For installation locations with elevations above 4,500 feet (1350 m), consult the factory.

WARNING

UNDER NO CIRCUMSTANCES SHOULD THE EQUIPMENT ROOM WHERE THE BOILER IS INSTALLED EVER BE UNDER NEGATIVE PRESSURE. PARTICULAR CARE MUST BE TAKEN WHEN EXHAUST FANS, COMPRESSORS, AIR HANDLING EQUIPMENT, ETC., MAY INTERFERE WITH THE COMBUSTION AND VENTILATION AIR SUPPLIES OF THIS BOILER.

CHEMICAL VAPOR CORROSION

Heat exchanger corrosion and component failure can be caused by the heating and breakdown of airborne chemical vapors. Spray can propellants, cleaning solvents, refrigerator and air conditioning refrigerants, swimming pool chemicals, calcium and sodium chloride, waxes, and process chemicals are typical compounds which are corrosive. These materials are corrosive at very low concentration levels with little or no odor to reveal their presence.

Products of this sort should not be stored near the boiler. Also, air which is brought in contact with the boiler should not contain any of these chemicals. If necessary, uncontaminated air should be obtained from remote or outside sources. Failure to observe this

requirement will void the warranty.

INSTALLATION CLEARANCES

Sufficient area should be provided at the front and sides of the unit for proper servicing. For ease of service, minimum clearances of 24" (61.0 cm) in the front and 18" (46.0 cm) on the sides are recommended. It is important that the minimum clearances be observed to allow service to the control box and other controls. Observing proper clearances will allow service to be performed without movement or removal of the boiler from its installed location. Failure to observe minimum clearances may require removal of the boiler in order to service such items as the heat exchanger and burners. In a utility room installation, the door shall be wide enough to allow the boiler to enter or to permit the replacement of another appliance.

Two inch (5.1 cm) clearance is allowable from combustible construction to hot water pipes. Sufficient clearance should be provided at one end of the boiler to permit access to heat exchanger tubes for cleaning.

Access to control box items such as the Central Control Board, Ignition Control Boards and wiring harnesses is provided through a panel on the left side of the unit. An 18" (46.0 cm) minimum clearance is recommended.

These boilers are approved for installation on noncombustible flooring in an alcove with minimum clearance to combustibles of: 3 inches (7.6 cm) Right Side, and Back; 6 inches (15.2 cm) Top, Front Alcove, 12 inches (30.5 cm) Left Side and 6 inches (15.2 cm) Vent.

For installation on combustible flooring use the Combustible Floor Kit. The combustible floor kit base adds 4" (10.1 cm) to the overall height of the boiler. See figure 3.

 

 

MODEL

COMBUSTIBLE FLOOR KIT NO.

(GB/GW)-1000

211093

(GB/GW)-1300

211093-1

(GB/GW)-1500

211093-2

(GB/GW)-1850

211093-3

(GB/GW)-2100

211093-4

(GB/GW)-2500

211093-5

 

 

Figure 3: Boiler on Combustible Floor Base and Kit Numbers

LEVELLING

Each unit must be checked after installation to be certain that it is level.

AIR REQUIREMENTS

WARNING

FOR SAFE OPERATION, AN AMPLE SUPPLY OF AIR MUST BE

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A.O. Smith 1000, 200, 201, 2500, 2100, 1850 Chemical Vapor Corrosion, Installation Clearances, Levelling, AIR Requirements