Viessmann VR1-161 Oil Fired Cast Iron Water Boiler 161K BTU 87%,
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Viessmann VR1-161

Viessmann VR1-140 Oil Fired Boiler Water Cast Iron 87% AFUE 140k BTU,
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Viessmann VR1-140

Viessmann Vitorond 100 Comfort VR1 Oil Fuel Cast Iron Shell Boiler, 87% AFUE, 105000 BTU Input, 92000 BTU Output

• Extremely durable cast iron heat exchanger for maximum reliability and service life
• Integrated stainless steel combustion chamber insert for clean and efficient combustion
• Thick 3-1/2" insulation for extremely low standby losses and fuel savings
• Easy access, full-swing left-hinged or right-hinged combustion chamber door
• Low maintenance cost with service friendly burner and easy-to-clean flue gas passageways
• Spacious, wet-base water walls prevent deposits, reduce stress and increase boiler life
• Additional energy savings and reduced emissions with modulating boiler water temperatures when using Vitotronic control options,
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  Viessmann VR1-105

Buderus G234X/55 Natural Gas Fired Cast Iron Water Boiler 228K BTU Input 188K BTU Output 84% AFUE
The Buderus G234X is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Buderus G234X/55

Viessmann Vitorond 100 Comfort VR1 Oil Fuel Cast Iron Shell Boiler, 87% AFUE, 91000 BTU Input, 80000 BTU Output

• Extremely durable cast iron heat exchanger for maximum reliability and service life
• Integrated stainless steel combustion chamber insert for clean and efficient combustion
• Thick 3-1/2" insulation for extremely low standby losses and fuel savings
• Easy access, full-swing left-hinged or right-hinged combustion chamber door
• Low maintenance cost with service friendly burner and easy-to-clean flue gas passageways
• Spacious, wet-base water walls prevent deposits, reduce stress and increase boiler life
• Additional energy savings and reduced emissions with modulating boiler water temperatures when using Vitotronic control options,
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  Viessmann VR1-91

Buderus G234x/45 Natural Gas Fired Cast Iron Water Boiler 187 BUT Input 154K BTU Output 84% AFUE
The Buderus G234x is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Buderus G234X/45

Weil-McLain SGO-5-S4 Cast Iron Residential High Efficiency Oil Fired Steam Boiler,83.9% AFUE,131K BTU Output 546 Square Feet

• Factory tested and assembled cast iron section assembly
• Insulated steel jacket
• Aluminized steel flue collector hood with flue cap on top outlet (convertible to rear outlet)
• Swing away burner mounting door
• Heater opening cover plate
• High limit control with circulator relay and LWCO function
• Electrical junction box with wiring harnesses
• Junction box cover plate with service switch
• (2) vent pipe brackets
• Steam pressure, temperature gauge
• 15 psi ASME relief valve-side outlet
• Drain valve
• Barometric damper
• Siphon
• Gauge glass, cocks and guard

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Weil-Mclain SGO-5-S4

Buderus G234x/38 Natural Gas Fired Cast Iron Water Boiler 160K BTU Input, 130K BTU Output 84% AFUE
The Buderus G234x is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Buderus G234X/38

Buderus G234x/38 Natural Gas Fired Cast Iron Water Boiler 160K BTU Input, 130K BTU Output 84% AFUE
The Buderus G234x is a larger gas fired boiler designed for medium to large sized homes. The included burner pre-mixes gas and oxygenated air to the optimal level, resulting in a clean burning flame that reduces emissions and waste buildup. The burner's tray is fully removable, resulting in an easy cleaning process and simplified routine maintenance. Fully field-convertible from natural gas to liquid propane operation, the G234x is perfect for a large variety of homes.,
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Buderus G234X/38

Weil-McLain SGO-4-S4 Cast Iron Residential High Efficiency Oil Fired Steam Boiler, 84% AFUE, 108K BTU Output 450 Square Feet

• Factory tested and assembled cast iron section assembly
• Insulated steel jacket
• Aluminized steel flue collector hood with flue cap on top outlet (convertible to rear outlet)
• Swing away burner mounting door
• Heater opening cover plate
• High limit control with circulator relay and LWCO function
• Electrical junction box with wiring harnesses
• Junction box cover plate with service switch
• (2) vent pipe brackets
• Steam pressure, temperature gauge
• 15 psi ASME relief valve-side outlet
• Drain valve
• Barometric damper
• Siphon
• Gauge glass, cocks and guard

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Weil-Mclain SGO-4-S4

Viessmann VIitocrossal 300 CU3A353 Powder-Coated Viessmann Silver Stainless Steel Combustion Chamber Condensing Natural/LP Gas Fired Water Boiler, 95% AFUE, 40 - 199 MBTU Input, 40 - 185 MBTU Output

• Equipped with the industrys first intelligent combustion management system and powerful control technology
• Lasting performance with industry-leading Viessmann made SA240 316 Ti stainless steel Inox-Crossal heat exchanger
• Low emission combustion with fully-modulating Viessmann stainless steel matrix cylinder burner
• Fast installation and reduced maintenance with Lambda Pro, industry-first intelligent combustion management system: adjusts automatically to gas type and quality, no fuel conversion kit required
• Powerful and user-friendly: Viessmann Vitotronic on-board multi-function outdoor reset boiler and system control for multi-temperature space and DHW heating
• Greater venting flexibility with increased vent length up to 198 feet and multiple venting
• Compact, esthetic product design and zero clearance to combustibles
• Extremely quiet operation, quieter than most refrigerators
• True high-altitude operation up to 10000 feet with simple electronic adjustment
• 4" WC natural gas, 10" WC liquid propane gas
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  Viessmann CU3A353

Features:

AFUEs above 91%

Sealed combustion or direct exhaust venting

PVC, polypropylene, or stainless steel venting

Multiple pass heat exchanger

Cast iron primary heat exchanger

Stainless steel condensing secondary heat exchanger

Control module with indicator lights

Inferred heat program providing automatic adjustment of boiler water temperature to match demand

Hot surface ignition system

Insulated heavy-gauge steel jacket

Williamson -Thermoflo GWI-58-N-T-S3-W