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OSB – Oil-Fired Steam Boiler Series 3

  • Factory Tested
  • Probe Type Low Water Cutoff
  • Easy Service
    • Swing-away burner door
    • Top access cleanout cover
    • Plug-in wiring harness
  • High efficiency oil burner
    • Solenoid valve
    • PSC motor
    • Solid state igniter
  • Rear flue outlet
    • Top flue available with optional kit
  • Cast iron sections
  • Insulated heavy-gauge steel jacket
  • Tankless heater option
Model
Burner Input (GPH)
Net AHRI Ratings: Steam (Sq. Ft.)
Net AHRI Ratings: Steam (MBH)
% DOE Seasonal Efficiency (AFUE) – Steam
Min. Chimney Size:
Rectangular
(x 15′ high)
Shipping Weight
OSB-3
0.95
358
86
85.0
8″ x 8″
600
OSB-4
1.20
450
108
85.0
8″ x 8″
705
OSB-5
1.45
546
131
85.0
8″ x 8″
820
OSB-6
1.75
658
158
85.0
8″ x 8″
920
Model
Burner Input (GPH)
Net AHRI Ratings: Steam (Sq. Ft.)
Net AHRI Ratings: Steam (MBH)
% DOE Seasonal Efficiency (AFUE) – Steam
Min. Chimney Size:
Rectangular
(x 15′ high)
Shipping Weight
OSB-3
0.95
358
86
85.0
8″ x 8″
600
OSB-4
1.20
450
108
85.0
8″ x 8″
705
OSB-5
1.45
546
131
85.0
8″ x 8″
820
OSB-6
1.75
658
158
85.0
8″ x 8″
920

Brochures & Sales Collateral

OSB – Oil-Fired Steam Boiler Series 3 Brochure

Manuals

OSB – Oil-Fired Steam Boiler Series 3 Boiler Manual

OSB – Oil-Fired Steam Boiler Series 3 Carlin Burner Manual (for #2 Fuel Oil to B20)

Oil-Fired Boilers Series 3 Carlin Burner Manual (for #2 Fuel Oil to B100)

OSB – Oil-Fired Steam Boiler Series 3 RW Beckett Burner Manual (for #2 Fuel Oil to B20)

Oil-Fired Boilers Series 3 RW Beckett Burner Manual (for #2 Fuel Oil to B100)

OSB – Oil-Fired Steam Boiler Series 3 Riello Burner Manual (for #2 Fuel Oil)

B100 Biofuel Addendum and Burner Cross Reference Guide

Warranty Information

OSB – Oil-Fired Steam Boiler Series 3 Commercial Warranty

OSB – Oil-Fired Steam Boiler Series 3 Residential Warranty