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Oil Fired Cast Iron Steam Boiler 4 Section 85%

Item #:OSB-4-P-S3 
Manufacturer Item: OSB-4-P-S3
Manufacturer: WILLIAMSON -THERMOFLO
Williamsom-Thermoflo OSB-4-P-S3 Oil Fired Cast Iron Steam Boiler
OSB-4-P-S3
Williamsom-Thermoflo OSB-3-P-S2-W Cast Iron Residential Oil Fired Steam Boiler, Net AHRI Ratings: Steam (Sq. Ft.) 450, Net AHRI Ratings: Steam (MBH) 108, AFUE 84% Less Coil/Less Burner
  • Factory tested
  • Easy service
  • Factory-assembled cast iron section with built-in air separator assembly, including aluminized steel flue collector, swing-away burner mounting door, with refractory blanket and recessed target wall in combustion chamber
  • Low draft loss
  • Top access cleanout cover
  • Plug-in wiring harness
  • High efficiency flame-retention oil burner
  • Flame retention head design
  • Solenoid valve
  • PSC motor
  • Solid state igniter
  • Rear flue outlet
  • Insulated heavy gauge steel jacket
  • High limit control with circulator relay
  • 15 psig ASME relief valve
  • Drain valve
  • Barometric damper
  • Siphon
  • Gauge glass and guard assembly
  • Pressure gauge
  • Probe low water cut-off
  • 7" flue connection size
  • Limited lifetime warranty on heat exchanger, 3 year limited warranty on parts
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Eaton 4107-G

All Oil Boilers

Brand Name
Williamson -Thermoflo
Type
Cast Iron Oil Fired Steam Boiler
Voltage
115
AFUE
85%
Fuel Type
Oil
COP12X50ROLL

Streamline Soft Copper Tubing 1/2" OD x 50' Roll Cleaned Dried & Capped

Mueller Copper COP12X50ROLL Mueller Copper Soft Copper Tubing 1/2" OD x 50' Roll Cleaned Dried & Capped
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COP12X50ROLL
COP38X50ROLL

Streamline Soft Copper Tubing 3/8" OD x 50' Roll Cleaned Dried & Capped

Mueller Copper Pipe COP38X50ROLL Mueller Copper Pipe Soft Copper Tubing 3/8" OD x 50' Roll Cleaned Dried & Capped
Item #:
COP38X50ROLL
SP-14A

Tee Offset 6"

Southwark SP-14A Tee Offset 6"
Item #:
SP-14A
TEE624

Tee 6" x 6" x 6" Galvanized 24 Gauge

Francer Industries TEE624 Tee 6" x 6" x 6" Galvanized 24 Gauge
Item #:
TEE624
W1-100O Image

Pro-Tec Orange Coated Oil Copper Tubing 1/2" OD x 100'

Kamco W1-100O Pro-Tec Orange Coated Oil Copper Tubing 1/2" OD x 100'
Item #:
W1-100O
W1-4O

Pro-Tec Orange Coated Oil Copper Tubing Roll 3/8" OD x 50'

Great Lakes Copper W1-4O Pro-Tec Orange Coated Oil Copper Tubing Roll 3/8" OD x 50'
Item #:
W1-4O
100-20

Barometric Draft Control W/Collar 6"

Field Controls 100-20 Barometric Draft Control W/Collar 6"
Item #:
100-20
1005626

90 Degree Adjustable Elbow Galvanized 26 Gauge 6"

Southwark 1005626 Elbow 90 Degree Adjustable 6" 26 Gauge
Item #:
1005626
264

Oil Filter Complete Mircoflo Element 10 GPH 3/8" x 3/8"

Mitco 264 Oil Filter Complete Mircoflo Element 10 GPH 3/8" x 3/8"
Item #:
264
264 BIO

Oil Filter Complete Mircoflo Element 10 GPH 3/8" x 3/8" Bio-Gasket

Mitco 264 BIO Oil Filter Complete Mircoflo Element 10 GPH 3/8" x 3/8" Bio-Gasket
Item #:
264 BIO
264F

Oil Filter Complete Felt Element 10 GPH 3/8" x 3/8"

Mitco 264F Oil Filter Complete Felt Element 10 GPH 3/8" x 3/8"
Item #:
264F
515-1

Firomatic Brass Fusible Burner Angle Valve 1/2" x 1/4" OD x MPT

Beckett Parts 515-1 Firomatic Brass Fusible Burner Angle Valve 1/2 x 1/4" ODF x MPT
Item #:
515-1
515-10

Oil Tank Angle Oil Valve 3/8" OD x 1/4" MPT

Beckett Parts 515-10 Angle Oil Valve
Item #:
515-10
6INDOS

Oil Draftostat 6"

Juniper 6INDOS Oil Draftostat 6"
Item #:
6INDOS
97.5-6-24

Round Snaplock Pipe 6' x 24" Galvanized 24 Gauge

Duc-Pac Corp 97.5-6-24 Round Snaplock Pipe 6' x 24" Galvanized 24 Gauge
Item #:
97.5-6-24
B2007

Oil Burner Chassis 120 VAC 5.8 AMP 56k-420k BTU

Beckett B2007 Oil Burner Chassis 120 VAC 5.8 AMP 56k-420k BTU
Item #:
B2007
514-1

Oil Tank Angle Oil Valve 3/8" OD x 1/4" MPT

Beckett Parts Angle Oil Valve
Item #:
514-1
5207301U

AF/AFG Burner Cover

Beckett Parts 5207301U AF/AFG Burner Cover
Item #:
5207301U
5686

Pedestal Extension Kit W/5" Bolts &

Beckett Parts 5686 Pedestal Extension Kit
Item #:
5686
610-90

Universal Oil Burner Flange W/Gasket

Beckett Parts 610-90 Universal Oil Burner Flange W/Gasket
Item #:
610-90
OSB-4-P-S3
Oil Fired Cast Iron Steam Boiler 4 Section 85%
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