A.O. Smith
A.O. Smith® 100122606 HW-670 Hydronic Heating Boiler, Natural Gas Fuel, 670000 Btu/hr Input, Bronze/Brass Housing, Electronic Ignition
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A.O. Smith® Conservationist® Burkay® Hydronic Heating Boiler, Series: HW-670, Natural Gas, 670000 Btu/hr Input, NPT, Electronic Ignition, Bronze/Brass Housing, 27 in Dia x 68-5/16 in H
- All non-ferrous waterways - All castings are made of bronze or brass
- All water tubes are made from copper
- Brazed joints or flare union construction make the heater immune to the effects of thermal shock and thermal cycling
- The Burkay® boiler provides one of the smallest foot prints in the industry
- Efficient copper coil combustion chamber the combustion chamber is a heat exchanger formed from a two passage coil of tightly wound continuous copper tube
- Water circulating through this coil captures radiant heat
- A wrap of insulation on the outside of the coil retains the heat captured by the circulating water, up to 82% efficient
- Copper heat exchanger - Directly above the coil and the main burner is a compact, horizontal, copper fin tube heat exchanger
- The flue gases must pass through this efficient heat exchanger before leaving the boiler
- This unique Burkay® coil and heat exchanger design provide maximum heat transfer and proven field durability
- Models meet the thermal efficiency and standby loss requirements of the US department of energy and current edition of ASHRAE/IESNA 90.1
- Burkay burner maximizes efficiency - The patented Burkay® burner designed to provide the highest level of primary air to 71 individual orifices while adding sufficient secondary air for proper combustion
- Gas valves - Slow opening redundant gas valves ensure smooth light-off without flame roll-out or pilot outage
- Thermal balancer - Factory supplied for use with primary secondary heating systems
- Cycles the secondary pump with the burner, but delays pump shut off at the end of the heating cycle to remove usable heat from the boiler
- Virtually eliminates stand-by heat losses at the boiler
- Automatic safety controls and electronic ignition - Proven pilot ignition system provides flame failure response in under 1 second
- Redundant high limit controls and gas valves assure safe shut off in the event of overheating or flame failure
- To compensate for the effects of high altitude areas above 2000 ft, the input, output and heating load ratings should be reduced approximately 4% for each 1000 ft above sea level
- CAT-I RM, ASME approved, hydrostatically tested and certified for 160 psi
- 30 psi Temperature and Pressure Relief Valve
- Connection TypeNPTDimensions27 in Dia x 68-5/16 in HFuel TypeNatural GasHousing MaterialBronze / BrassIgnition TypeElectronicInput Capacity670,000 BTU/hrManufacturerA.O. SmithManufacturer #100122606SeriesHW-670