Lennox International Inc GWB8-299E-2 BOILER RATINGS AND CAPACITIES - Ratings and Capacities

2 - BOILER RATINGS AND CAPACITIES

Table 2 - Ratings and Capacities

				† NATURAL GAS							† PROPANE GAS				AFUE
						(2)						(2)
							HIGH					NET	HIGH
BOILER MODEL					NET AHRI						HEATING				INTERMITTENT
	Input		Heating				ALTITUDE		INPUT			AHRI	ALTITUDE
NUMBER (1)					RATING						CAPACITY				IGNITION
	(3)	Mbh	Capacity		Water,		INPUT		(3)	Mbh	(3)Mbh	RATING	INPUT		WITH VENT
			(3)	Mbh			(3)	Mbh				Water,	(3)	Mbh
					(3)	Mbh						(3) Mbh			DAMPER
GWB8-262E-2	262.5		220		191		236								83.9
GWB8-299E-2	299		251		218		269								83.7
GWB8-245E-2									245		206	179	220		83.9
GWB8-280E-2									280		235	204	252		83.7

†Input rating for sea level to 2,000 ft. (610m) above sea level.

•United States, over 2000 ft (610m) above sea level. Reduce input rate 4% for every 1000 ft (304m) above sea level.

•*Canada, 2000 ft (610m) to 4500 (1350m) above sea level, reduce input per table. Over 4500 ft (1350m) above sea level. Contact Provincial authority having jurisdiction.

+ Heating Capacity based on D.O.E. (Department of Energy) test procedure.

(2)Net AHRI Water rating shown based on piping and pickup allowance of 1.15. Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.

(3)Mbh = 1,000 Btuh = British Thermal Unit Per Hour

-Ratings marked “Net AHRI Ratings” indicate amount of remaining heat input used to heat radiation or terminal units. Net AHRI Ratings shown are based on allowance of 1.15 in accordance with factors shown on AHRI Standard as published by The Hydronics Institute.

-Selection of boiler size should be based upon “Net AHRI Rating” being equal to or greater than calculated heat loss of the building.

-Consult manufacturer before selecting boiler for installations having unusual piping and pickup requirements.

BOILERS FOR USE AT HIGH ALTITUDE

Boiler is factory equipped for use at altitudes of 0-2,000 feet above sea level.

For use at altitudes above 2,000 feet above sea level, input ratings are reduced by change in main burner orifice size.

For altitudes above 2,000 feet above sea level, input ratings should be reduced at rate of 4% for each 1,000 feet above sea level. Consult National Fuel Gas Code, ANSI Z223.1/NFPA 54, or manufacturer for correct orifice sizing information.

In Canada, a high altitude conversion kit is available to convert to altitudes of 2,000 to 4,500 feet above sea level. Please consult your dealer.

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