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Features:
  • Factory Tested
  • Probe Type Low Water Cutoff
  • Swing-away burner door
  • Top access cleanout cover
  • Plug-in wiring harness
  • High efficiency oil burner
  • Solenoid valve
  • PSC motor
  • Solid state ignitor
  • Rear flue outlet, Top flue available with optional kit
  • Cast iron sections
  • Insulated heavy-gauge steel jacket
  • Tankless heater option
  • Item#:
    OSB-5-P-S3
    Manufacturer Item:
    OSB-5-P-S3
    Manufacturer:
    WILLIAMSON -THERMOFLO
    Features:
  • Factory Tested
  • Probe Type Low Water Cutoff
  • Swing-away burner door
  • Top access cleanout cover
  • Plug-in wiring harness
  • High efficiency oil burner
  • Solenoid valve
  • PSC motor
  • Solid state ignitor
  • Rear flue outlet, Top flue available with optional kit
  • Cast iron sections
  • Insulated heavy-gauge steel jacket
  • Tankless heater option
  • Item#:
    OSB-4-P-S3
    Manufacturer Item:
    OSB-4-P-S3
    Manufacturer:
    WILLIAMSON -THERMOFLO
  • 53.1 Gallon DHW
  • 2.1 Gallon Boiler, 12 gpm, 140 BTU
  • Inspection opening provides easy access to clean and inspect tank
  • 2" of dense foam insulation, CFC free and environmentally safe
  • Adjustable leveling legs
  • Low off cycle losses
  • Pressure relief valve provided
  • Tank and coil are 100% air pressure/water tested
  • Factory installed sacrificial magnesium anode rod
  • Item#:
    GL-53-W
    Manufacturer Item:
    GL-53-W
    Manufacturer:
    WILLIAMSON -THERMOFLO
    Features:
    Powder Coat
  • 85.9% AFUE, 91000/105000/119000 BTU Input, 79400/90200/101200 BTU Output, 1325 cfm
    • Less burner
    • Rear flue
    • Interior baffling for maximum efficiency
    • 3.5 Ton cooling capacity
    • Heavy gauge with seal-tite construction and foil-faced insulation for hand-cool surface
    • Spring loaded observation port with test port
    • 18-1/2" width x 17-1/2" depth supply air outlet
    • 18-1/2" width x 15-1/2" depth return air outlet
    • 6" flue diameter
    • Heavy gauge burner mounting plate with studs and nuts
    • Heavy-gauge with seal-tite construction
    • Preformed slide out chamber for easy service
    ,




    williamson -thermoflo clb105ddrxws2


    williamson -thermoflo clb-105-vs-r-s2-w

  • Item#:
    CLB-105-VS-R-S2-W
    Manufacturer Item:
    CLB105VSRS2W
    Manufacturer:
    WILLIAMSON -THERMOFLO
  • 39.9 Gallon DHW
  • 1.7 Gallon Boiler, 8 gpm at 1.6 feet WC, 125 BTU
  • Inspection opening provides easy access to clean and inspect tank
  • 2" of dense foam insulation, CFC free and environmentally safe
  • Adjustable leveling legs
  • low off cycle losses
  • Pressure relief valve provided
  • Tank and coil are 100% air pressure/water tested
  • Factory installed sacrificial magnesium anode rod
  • 10-years residential and 7-years commercial warranty
  • Item#:
    GL-42-W
    Manufacturer Item:
    GL-42-W
    Manufacturer:
    WILLIAMSON -THERMOFLO
    Features:
    Powder Coat
  • 85.9% AFUE, 91000/105000/119000 BTU Input, 79400/90200/101200 BTU Output, 1325 cfm
    • Less burner
    • Rear flue
    • Interior baffling for maximum efficiency
    • 3.5 Ton cooling capacity
    • Heavy gauge with seal-tite construction and foil-faced insulation for hand-cool surface
    • Spring loaded observation port with test port
    • 18-1/2" width x 17-1/2" depth supply air outlet
    • 18-1/2" width x 15-1/2" depth return air outlet
    • 6" flue diameter
    • Heavy gauge burner mounting plate with studs and nuts
    • Heavy-gauge with seal-tite construction
    • Preformed slide out chamber for easy service
    ,




    williamson -thermoflo clb105ddrxws2

  • Item#:
    CLB-105-VS-F-S2-W
    Manufacturer Item:
    CLB105VSFS2W
    Manufacturer:
    WILLIAMSON -THERMOFLO
  • 29.6 Gallon DHW
  • 1.6 Gallon Boiler, 10 gpm
  • Inspection opening provides easy access to clean and inspect tank
  • 2" of dense foam insulation, CFC free and environmentally safe
  • Adjustable leveling legs
  • Low off cycle losses
  • Pressure relief valve provided
  • Tank and coil are 100% air pressure/water tested
  • Factory installed sacrificial magnesium anode rod
  • ,



    GL-32-W


    GL-32-W

    Item#:
    GL-32-W
    Manufacturer Item:
    GL-32-W
    Manufacturer:
    WILLIAMSON -THERMOFLO
    Features:
    Powder Coat
  • 85.9% AFUE, 91000/105000/119000 BTU Input, 79400/90200/101200 BTU Output, 1325 cfm
    • Less burner
    • Rear flue
    • Interior baffling for maximum efficiency
    • 3.5 Ton cooling capacity
    • Heavy gauge with seal-tite construction and foil-faced insulation for hand-cool surface
    • Spring loaded observation port with test port
    • 18-1/2" width x 17-1/2" depth supply air outlet
    • 18-1/2" width x 15-1/2" depth return air outlet
    • 6" flue diameter
    • Heavy gauge burner mounting plate with studs and nuts
    • Heavy-gauge with seal-tite construction
    • Preformed slide out chamber for easy service
    ,




    williamson -thermoflo clb105ddrxws2


    williamson -thermoflo clb105ddrxws2

  • Item#:
    CLB105DDRXWS2
    Manufacturer Item:
    CLB105DDRXWS2
    Manufacturer:
    WILLIAMSON -THERMOFLO
    View: