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RATINGS AND CAPACITIES
*
*
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.
UNIT
GAS
TYPE
NUMBER
OF
SECTIONS
MAX
INPUT
(BTUH)
HEATING
CAPACITY
(BTUH)
NET RATING
AFUE %
(WITH DAMPER)
APPROX
SHIP.
WT (Lb)Btuh Sq Ft
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
DIMENSIONS
MODELS BS1 and BS2
26
1
⁄
2
″
A
VENT
DAMPER
RELIEF
VALVE
LEFT SIDE RIGHT SIDEFRONT
29″
12
1
⁄
4
″
2
1
⁄
2
″ N.P.T.
PRESSURE
GAGE
LOW WATER
CUT-OFF PROBE
GAS LINE
PRESSURE
LIMIT CONTROL
2
1
⁄
2
″
TRANSFORMER
S86
GAS
VALVE
LOW WATER
CUT-OFF
2
1
⁄
2
″
GLASS
GAGE
WATER
LINE
4
3
⁄
4
″
24″36
3
⁄
8
″
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.
)
*
Service clearance requirement 24 in.
RIGHT SIDE 6
*
LEFT SIDE 6
*
TOP 6
*
BACK 6
*
FRONT 6
*