Product Description; Specifications - Crown Boiler BSI Series Installation, Operating And Service Instructions

The BSI series boilers are low pressure cast iron gas fired steam boilers designed for use in closed steam heating systems
at steam pressures below 15psi. These boilers are Category I draft diverter equipped appliances, which must be vented by
natural draft using a lined masonry or listed metal chimney system. An adequate supply of air for combustion, ventilation and
dilution of flue gases must be available in the boiler room. These boilers are not designed for use in process or other "open"
steam systems.
FIGURE 2.1: BSI BOILERS - GENERAL CONFIGURATION
TABLE 2.2: BSI SPECIFICATIONS
BSI SPACE HEATING RATINGS
NATURAL AND LP GAS
CROWN HEATING
INPUT
MODEL CAPACITY
(MBH)
NUMBER (MBH)
BSI069 69
BSI103 103
BSI138 138 113
BSI172 172 142
BSI207 207 171
BSI241 † 241 199
BSI276 276 229
†
1. Not for use at altitudes above 2,000 ft. in natural or LP gas.
Available as semi-packaged boiler.
†
I Product Description
II Specifications
AHRI NET RATING STEAM
(MBH)
SQ. FT.
57 179
85 267
354
446
533
621
717
NO. OF
SEC.
AFUE
(%)
MBH
43 82.0 3
64 82.0 4
85 82.0 5
107 82.1 6
128 82.1 7
149 82.2 8
172 82.2 9
1 1
DIMENSIONS
"A" "B" "C"
(in) (in) (in)
12-3/4 28 40-7/16
16 28 40-7/16
19-1/4 28 40-7/16
22-1/2 28 40-7/16
25-3/4 30 40-7/16
29 30 40-7/16
32-1/4 30 40-7/16
WATER
VOLUME
"D"
(Gal.)
(in)
4 5.1
5 6.5
6 7.9
6 9.3
7 10.7
7 12.1
8 13.5