| Williamson
Boilers |
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| • GWA Gas-Fired Water Boiler | |||||||||
 GWA Gas-Fired Water Boiler52,000 to 245,000 Btuh Input Natural or Propane
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| Construction • Atmospheric (chimney) venting • Factory Packaged • Factory Tested • Easy service + One-piece access door + All controls in easy reach • High efficiency + Flue baffles + Stainless steel burners + Automatic vent damper • Cast iron sections • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Cast iron sections with built-in air separator • Vertical draft hood • Electrical junction box • 24-VAC combination gas valve • Combination relay receptacle and 40VA transformer and plug-in circulator relay • Taco 007 circulator • High temperature limit control • 30 PSIG ASME relief valve • Combination pressure/temperature gauge Standing Pilot Models • Constant-burning pilot system, thermally supervised Intermittent Pilot Models • Spark-ignited (intermittent) pilot system • Electronic ignition/flame supervisory control |
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| Construction • Induced-draft combustion system allows sidewall or chimney venting • Factory Packaged • Compact Design • Factory Tested • Easy to service + One-piece access door + All controls in easy reach + Color-coded wiring • High Efficiency + AFUEs to 83.3% + Spark-ignited pilot with electronic control • Cast iron sections with built-in air separator • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Insulated extended steel jacket • Induced-draft blower assembly • Air Pressure switch • Stainless steel burners • Electrical junction box • 24-VAC combination gas valve • Combination relay receptacle and 40VA transformer and plug-in circulator relay • Taco 007 circulator • High temperature limit control • 30 PSIG ASME relief valve • Combination pressure/temperature gauge • Spark-ignited (intermittent) pilot system • Electronic ignition/flame supervisory control |
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 GWS Gas-Fired Water Boiler63,000 to 158,000 Btuh Input Natural or Propane
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| Construction • Sealed combustion option allows use of outside combustion air • Factory Packaged • Compact Design • Factory Tested • Easy to service + One-piece access door + Plug-in wiring + Control module with diagnostic lights • High Efficiency +AFUEs to 85.3% +Spark-ignited pilot with electronic control • Cast iron sections with built-in air separator • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Insulated extended steel jacket • Induced-draft blower assembly • Air Pressure switch • Stainless steel burners • Electrical junction box • 24-VAC combination gas valve • 40VA control transformer • Plug-in wiring • Taco 007 circulator • High temperature limit control • 30 PSIG ASME relief valve • Combination pressure/temperature gauge • Spark-ignited (intermittent) pilot system • Electronic ignition/flame supervisory control |
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 GSA Gas-Fired Steam Boiler75,000 to 250,000 Btuh Input Natural or Propane
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| Construction • Atmospheric (chimney) venting • Factory Packaged • Factory Tested • Easy service + One-piece access door + All controls in easy reach • High efficiency + Generous heating surface + Automatic vent damper • Cast iron sections • Rugged construction for long life + Integral cast iron legs + Integral draft diverter + Insulated heavy-gauge steel jacket + Heavy-gauge aluminized steel flue collector • 10-Year warranty on boiler sections |
Equipment • Factory assembled cast iron sections • 24-VAC combination gas valve • Gauge glass and guard assembly • Pressure gauge and siphon assembly • Pressure limit control • Probe low water cutoff • High temperature limit control • Automatic vent damper • 15 PSIG ASME relief valve • Constant-burning pilot system, thermally-supervised • Drain valve |
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 OWB Oil-Fired Water Boiler0.75 to 2.00 GPH Input
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| Construction • Factory Packaged • Factory Tested • Easy service + Swing-away burner door + Low draft loss + Top access cleanout cover + Plug-in wiring harness • High efficiency oil burner + Flame retention head design + Solenoid valve + PSC motor + Solid state ignitor • Rear flue outlet • Cast iron sections with built-in air separator • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Factory-assembled cast iron section assembly, including aluminized steel flue collector, swing-away burner mounting door, with refractory blanket and recessed target wall in combustion chamber. • Taco 007 circulator • High efficiency flame-retention oil burner (Beckett AFG, Weil-McLain QB, or Carlin EZ) • High limit control with circulator relay • Built-in air separator • Combination pressure/temperature gauge • 30 PSIG ASME relief valve • Drain valve • Barometric damper Optional • Two-stage oil burner fuel unit |
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 OWT Oil-Fired Water Boiler0.75 to 2.00 GPH Input With tankless heater
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| Construction • Factory Packaged • Factory Tested • Easy service + Swing-away burner door + Low draft loss + Top access cleanout cover + Plug-in wiring harness • High efficiency oil burner + Flame retention head design + Solenoid valve + PSC motor + Solid state ignitor • Rear flue outlet • Cast iron sections with built-in air separator • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Factory-assembled cast iron section assembly, including aluminized steel flue collector, swing-away burner mounting door, with refractory blanket and recessed target wall in combustion chamber. • Taco 007 circulator • High efficiency flame-retention oil burner (Beckett AFG, Weil-McLain QB, or Carlin EZ) • High limit control with circulator relay • Built-in air separator • Combination pressure/temperature gauge • 30 PSIG ASME relief valve • Drain valve • Barometric damper • Tankless heater Optional • Two-stage oil burner fuel unit |
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 OSB/T Oil-Fired Steam Boiler1.00 to 2.00 GPH Input Optional tankless heater
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| Construction • Factory Packaged • Factory Tested • Easy service + Swing-away burner door + Low draft loss + Top access cleanout cover + Plug-in wiring harness • High efficiency oil burner + Flame retention head design + Solenoid valve + PSC motor + Solid state ignitor • Rear flue outlet • Cast iron sections with built-in air separator • Insulated heavy-gauge steel jacket • Limited lifetime warranty |
Equipment • Factory-assembled cast iron section assembly, including aluminized steel flue collector, swing-away burner mounting door, refractory blanket and recessed target wall in combustion chamber. • Flame-retention oil burner (Beckett AFG, Weil-McLain QB, or Carlin EZ) • High limit pressure control • Probe low water cutoff • Pressure gauge • Siphon • Gauge glass, gauge cocks and guards • 15 PSIG ASME relief valve • Drain valve • Barometric damper Optional • Two-stage oil burner fuel unit • Tankless heater, shipped in separate carton |
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