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SPECIFICATIONS
*
Factory authorized and listed, field installed.
UNIT SIZE
075 112 150 187 225 262 299
GENERAL DATA
Sections—Fine Grain Cast Iron No. 3456789
Burners—Stainless/Titanium Alloy No. 2345678
Burners—Orifice Drill Size Natural 34 34 34 34 34 34 34
GAS CONTROLS — STANDING PILOT (BS1)
Gas Valve Honeywell
Inlet Size
In.
1/2 FPT 3/4 FPT
Pilot Assembly Honeywell
GAS CONTROLS — INTERMITTENT PILOT (BS2)
Gas Valve Honeywell
Inlet Size
In.
1/2 FPT 3/4 FPT
Pilot Assembly Honeywell
Spark Generator Honeywell/UTEC
CONTROLS
Low-Water Cutoff McDonnell Miller
Pressuretrol Psig 0—15
Pressure Relief Valve Setting 15 Psig
Capacity 400 lb/hr
Pressure Retard Gage Range Psig 0–30
Drain Cock In. 3/4
Vent Damper
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In. 5 6 7
Models BS1 and BS2 Gas-Fired Steam Boilers provide fast
heat quietly and economically to assure the finest in hydronic
heating.
These boilers provide quality design in a small, compact unit
easily installed in a basement, garage, or utility room. They
can be installed on a combustible floor when an optional
combustible floor base is used.
The model BS1 and BS2 design is CSA and A.G.A. certified
for use with natural and is convertible to propane gas with
accessory kit.
FEATURES
RANGE OF CAPACITIES
—Sizes 75,000 through 299,000 Btuh
input are available.
COMPLETELY PACKAGED
—Each boiler is completely assem-
bled, including all controls (except room thermostat). All necessary
wiring is factory installed. The boiler is ready for gas, water, room
thermostat, and electrical connections as shipped.
THERMAL-PIN, CAST-IRON SECTIONS
—These sections speed
heat transfer from the flue gases to the boiler water, with faster ther-
mostat response, providing greater comfort and economy. Max-
imum heat is produced at a lower level on the thermal-pin sections,
leading to peak efficiency.
TITANIUM COMPOSITE BURNERS
—Provide quiet operation,
corrosion resistance and improved combustion efficiency. Propane
convertible – with accessory kit.
CONTROLS
—An automatic gas valve and continuous pilot or
intermittent pilot provide quiet, dependable operation of the
burners. Factory-installed safety components assure protection
against overheating, pressure buildup, and low-water operation.
INSULATED CASING
—The casing is fully insulated with fiber-
glass for maximum operating efficiency and economy.
AUTOMATIC VENT DAMPER
—The Model BS1 and BS2 is
designed with automatic vent damper to recover chimney loss
during off cycle.
SECTIONS TESTED
—Each section is hydrostatically tested to
50 psig. Individual sections are tested to 125 psig at factory.
Assembled sections are tested to 75 psig at the factory.
Maximum allowable working pressure is 50 psig. The
maximum allowable pressure is 15 psig for steam boilers.
INTERGRAL DRAFT
—These boilers incorporate an integral draft
system to simplify installation. No external draft diverter is needed.
WARRANTY
—The cast-iron sections are covered by a non-
prorated 12-year warranty on the entire assembly. Vent damper
covered by 5-year warranty. All other parts are covered by a 1-year
limited warranty.
MODELS BS1 and BS2