A.O. Smith

A.O. Smith® 100122603 HW-225M Circulating Water Heater, Natural Gas

AOSHW225 MFG #: 100122603
A.O. Smith® 100122603 HW-225M Circulating Water Heater, Natural Gas
  • Commercial / Residential / Dual: Commercial
  • Connection Type: 1 in NPT Water
  • Fuel Type: Natural Gas
  • Ignition Type: Electronic
  • Input Capacity: 225,000 BTU/hr
  • Ultra Low NOx: No
  • Dimensions: 26-11/16 in W x 60 in H
  • Manufacturer: A.O. Smith
  • Manufacturer #: 100122603
  • Series: HW-225M
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A.O. Smith® Burkay® Circulating Water Heater, Series: HW-225M, Natural Gas, 225000 Btu/hr Input, 1 in NPT Water, Electronic Ignition, Ultra Low Nox: No, 26-11/16 in W x 60 in H, Commercial/Residential/Dual: Commercial
  • Features
  • Rustproof because water comes in contact with nothing but copper, brass or bronze
  • Copper transfers heat eight times faster than ferrous metals yet offer remarkable structural strength without excessive weight
  • Free from the effects of thermal shock
  • Efficient copper coil combustion chamber
  • Continuous coils of tightly wound copper tubing form a unique combustion chamber
  • Water circulating thru the coils, around the flame, captures radiant heat which may otherwise be lost
  • High efficiency stainless steel burner developed especially for A.O. smith water heaters using the very latest burner principles
  • Forced water circulation improves system efficiency
  • Water moving at 2 to 4 ft per second helps to prevent lime buildup and also scrubs extra heat from the copper coil combustion chamber
  • Proven pilot ignition system provides flame failure response in less than one second
  • Redundant high limit controls and gas valves assure safe shutoff in the event of overheating or flame failure
  • Requires 120 V 60 Hz, maximum inlet gas pressure of 14 in W.C and activation of heater by external temperature control
  • Patented thermal balancer functions as a pump shutoff delay switch
  • It allows the pump and heater to activate simultaneously but delays pump shut off for 120 +/- 30 seconds after heater shuts down
  • This allows the high temperature water to clear the heater thus utilizing all heat that had been generated plus educing the scale forming tendencies of motionless hot water
  • Jacket: Prefinished with a bonderized coating followed by a baked on enamel finish
  • All models are design-certified by CSA international, according to ANSI Z21.10.3 - CSA 4.9 standards governing circulating water heaters
  • Models are ASME certified and are design-certified by NSF international to NSF sanitation 5
  • Models meet the thermal efficiency and standby loss requirements of the U.S department of energy and current edition of ASHRAE/IESNA 90.1