Bryant BW4B, BW1, BW5B, BW2, BW3, BW9 manual Models BS1 and BS2, Unit Size Vent Diameter

		DIMENSIONS
		MODELS BS1 and BS2
VENT	PRESSURE
DAMPER			26 1⁄2″
RELIEF		GAGE
			4 3⁄4″
VALVE				2 1⁄2″
		TRANSFORMER
		PRESSURE		GLASS
				GAGE
		LIMIT CONTROL		WATER
2 1⁄2″ N.P.T.		LOW WATER
				LINE
		CUT-OFF
29″	36 3⁄8″	LOW WATER	2 1⁄2″	24″
		CUT-OFF PROBE	S86
12 1⁄4″			GAS
			VALVE
		GAS LINE
		A
LEFT SIDE		FRONT	RIGHT SIDE

DIMENSIONS (In.)

UNIT SIZE	A	VENT DIAMETER
075	11-1/4	5
112	14-1/2	6
150	17-3/4	6
187	21	7
225	24-1/4	7
262	27-1/2	7
299	30-3/4	7

	CLEARANCES (In.)
RIGHT SIDE		6*
LEFT SIDE		6*
TOP		6*
BACK		6*
FRONT		6*

*Service clearance requirement 24 in.

RATINGS AND CAPACITIES*

	GAS	NUMBER	MAX	HEATING	NET RATING			APPROX
		OF	INPUT	CAPACITY			AFUE %	SHIP.
UNIT	TYPE	SECTIONS	(BTUH)	(BTUH)	Btuh	Sq Ft	(WITH DAMPER)	WT (Lb)
BS1AAN075	Natural	3	75,000	62,000	47,000	196	81.1	256
BS1AAN112	Natural	4	112,500	91,000	68,000	283	78.8	404
BS1AAN150	Natural	5	150,000	122,000	92,000	383	79.2	483
BS1AAN187	Natural	6	187,500	153,000	115,000	479	79.6	564
BS1AAN225	Natural	7	225,000	183,000	137,000	571	80.1	649
BS1AAN262	Natural	8	262,500	214,000	161,000	671	80.5	719
BS1AAN299	Natural	9	299,000	245,000	184,000	767	80.9	800
BS2AAN075	Natural	3	75,000	62,000	47,000	196	82.7	256
BS2AAN112	Natural	4	112,500	91,000	68,000	283	80.4	404
BS2AAN150	Natural	5	150,000	122,000	92,000	383	80.6	483
BS2AAN187	Natural	6	187,500	153,000	115,000	479	80.9	564
BS2AAN225	Natural	7	225,000	183,000	137,000	575	81.1	649
BS2AAN262	Natural	8	262,500	214,000	161,000	671	81.3	719
BS2AAN299	Natural	9	299,000	245,000	184,000	767	81.6	800

*Ratings are for altitudes to 2000 ft. Ratings for units for altitudes over 2000 ft are 4% less for each 1000 ft above sea level. Ratings in sq ft are computed at 240 Btuh/sq ft for steam boilers.

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