A.O. Smith

A.O. Smith® 100122606 HW-670 Hydronic Heating Boiler, Natural Gas Fuel, 670000 Btu/hr Input, Bronze/Brass Housing, Electronic Ignition

AOSHW670N MFG #: 100122606
A.O. Smith® 100122606 HW-670 Hydronic Heating Boiler, Natural Gas Fuel, 670000 Btu/hr Input, Bronze/Brass Housing, Electronic Ignition
  • Connection Type: NPT
  • Fuel Type: Natural Gas
  • Housing Material: Bronze/Brass
  • Ignition Type: Electronic
  • Input Capacity: 670,000 BTU/hr
  • Dimensions: 27 in Dia x 68-5/16 in H
  • Manufacturer: A.O. Smith
  • Manufacturer #: 100122606
  • Series: HW-670
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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
  • Features
  • Includes
  • 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