| BTU Rating | : | 120000 to 670000 Btu/hr |
| Connection Type | : | 1-1/4 in NPT Water Inlet/Outlet, 3/4 in Gas Inlet |
| Dimensions | : | 65 in H x 29-5/8 in D |
| Flow Rate | : | 23 to 54 gpm |
| Frequency Rating | : | 60 Hz |
| Fuel Type | : | Liquid Propane Gas, Natural Gas |
| Material | : | Bronze/Brass/Copper |
| Series | : | HW Series |
| Voltage Rating | : | 120 VAC |
AO Smith® Burkay® Hot Water Supply Boiler, HW Series, 120 VAC, 60 Hz Frequency, 120000 to 670000 Btu/hr BTU, 23 to 54 gpm Flow Rate, 1-1/4 in NPT Water Inlet/Outlet, 3/4 in Gas Inlet Connection, Liquid Propane Gas, Natural Gas Fuel, Bronze/Brass/Copper, Dimensions: 65 in H x 29-5/8 in D
- All non-ferrous waterways - brazed joints or flare union construction make the boiler immune to the effects of thermal shock and thermal cycling, a great boiler for domestic hot water supply
- 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 surrounds the main burner and captures the radiant heat, a wrap of insulation on the outside of the coil retains the heat captured by the circulating water
- 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
- Burkay burner maximizes efficiency- the patented burkay burner uses primary air injection at upto 72 individual orifices plus secondary entrainment of air, approved for installation on combustible floors as shipped from factory
- Gas valves - slow opening redundant gas valves ensure smooth light-off without flame roll-out or pilot outage
- Thermal balancer - delays pump shut off at end of heating cycle to remove usable heat from the heat exchanger and reduce the scale forming tendencies of motionless hot water
- Automatic safety controls and electronic ignition - proven pilot ignition system provides flame failure response in under 1 sec, redundant high limit controls and gas valves assure safe shut-off in the event of overheating or flame failure
- Working pressure - ASME approved, hydrostatically tested and certified for 160 lb/sq-in, ships with ASME 125 lb/sq-in relief valve
- Limited warranty outline -consult written warranty or contact your AO Smith sales representative
- Compliance - these models meet the thermal efficiency and standby loss requirements of the U.S. department of energy and current edition ASHRAE/IESNA 90.1