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The modern design and attractive appearance of the models
BW4 and BW5 Oil-Fired Water Boilers make them ideal for
installation in any area. The boilers are shipped fully
assembled and wired, including all controls (except barometric
draft regulator). The compact 22-gage steel cabinet has a
baked-on enamel paint finish for durability. A 1-in. layer of
thermal insulation is applied inside the jacket for protection
and thermal efficiency. The flame retention head burner
provides efficient fuel usage. A wet base cast iron block with thermal
pins surrounds the combustion area for better heat transfer from flue
gases to water.
FEATURES
BAROMETRIC DRAFT CONTROL
—The factory supplied
barometric draft control can easily be installed in the vent pipe for
optimum draft and combustion efficiency.
CONTROLS
—Factory-wired controls on units with tankless hot
water coil include a triple aquastat relay with high/low limit
protection and circulator control.
COMBINATION TRANSFORMER AQUASTAT
—A 24-v
transformer is combined with the aquastat assembly. The
transformer will supply power efficient to power a 3-zone system
on BW5 models. Factory installed combination pressure/
temperature gage and a pressure relief valve.
COIL OPTIONS
—Units are available with or without tankless
heater coil. The coil provides a supply of hot water for normal
domestic purposes or an accessory tankless heater coil can be
added later.
FACTORY INSTALLED FEATURES
—A factory-installed drain is
provided should the boiler ever need to be drained. Oil primary
control prevents boiler in operation in the event of flame loss.
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. The
maximum allowable pressure is 50 psig for hot water boilers.
EASE OF INSTALLATION
—Circulator is shipped pre-wired
with 6 ft bx conduit for easy installation for supply side pumping.
WARRANTY
—The cast-iron sections are covered by a non-
prorated 20-year warranty on the entire assembly. Oil burner and
circulator pump covered by 3-year warranty. All other parts are
covered by a 1-year limited warranty.
SOLENOID OIL VALVE
—This provides cleaner burning and
quieter operation. Valve is included on all burner types.
SWING BURNER DOOR
—This unique design offers uninhibited
access for set-ups, service, and maintaining the burner. Routine
cleaning is also much easier.
MODELS BW4 and BW5
SPECIFICATIONS
UNIT SIZE 120 181 239
GENERAL DATA
Sections — Fine Grain Cast Iron No. 3 4 5
Water Capacity Gal 9.6 11.6 13.7
Combustion Chamber Target Wall Ceramic Fiber
Draft Regulator Furnished
OIL BURNER
Type Manufacturer/Model Beckett/Model AFG Flame Retention Head Burner
Oil Pump Single Stage
Fuel Type No. 1 or 2 Fuel Oil
Rated Load Amps 3 Amps
CONTROLS
Combination Control Without Heater High Limit, Circulator Relay, & Cad. Cell Relay
With Heater High & Low Limit, Circulator Relay, & Cad. Cell Relay
Pressure/Temperature Gage Psig 0–60
°
F60–260
ASME Pressure Relief Valve Psig 30
CIRCULATOR
Taco Model 007
Full Load Amps 0.70
Flange Size FPT In. 1-1/4