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Burkay® Genesis® Space Saver Mid-Range Efficiency Gas Boiler

84% Thermal Efficiency, Smaller Footprint, Extreme Venting Flexibility, Outstanding Value

Genesis is a new generation of commercial boilers designed and engineered to a new benchmark in installation and operational flexibility. It is proof that mid-range efficiency boilers don’t have to be big, difficult to install, or expensive, like so many ordinary boilers.

High-Efficiency Features:

• Limitless applications – Standout choice for everything from schools, apartment buildings, motels and hotels to light industrial and more.
• Space-saving design fits where others can’t – As much as 1/3rd smaller than other boilers. With the optional stack rack, two units can be put in the same space as one.
• Advanced fan-assisted combustion system – Optimizes gas/air ratio and forces air mixture into the burners for more efficient combustion.
• Efficient copper heat exchanger design – Advanced heat exchanger design uses integral-finned extruded copper tubes to increase transfer of heat which translates into a high 83.7% thermal efficiency rating.
• Hook up-and-run simplicity – Just connect water, gas, electrical and venting, set temperature, flip switch, and you’re off and running.
• Exclusive multi-mount exhaust fitting – Gives you option of either rear-or top-venting connections. Greatly simplifies installation and manifolding of stacked units.
• Extremely low-NOx emissions
• Dia-Scan™ II diagnostic system – Microprocessor-based control. Monitors every electrical boiler function. Pinpoint diagnostic capabilities. Digital LED Temperature display. Function status and fault LEDs. Plus or minus 1 degree accuracy. Optional remote control panel and modem software.
• Meets ASRAE/IESNA 90.1-1999
• For your safety (and to comply with the warranty), have all water heater installations and repairs completed by a licensed and insured contractor.
• For your safety (and to comply with the warranty), have all water heater installations and repairs completed by a licensed and insured contractor.
• General A.O. Smith Help
  

Mechanical Venting Flexibility:

• Direct-vent pressurized combustion: Allows clean, uncontaminated air to be drawn directly into unit. Flue gas by-products are expelled through wall to outside.
• Sidewall or vertical: The Genesis® boiler can be vented directly through an outside wall or vertically through the roof.
• The rear-venting design allows units to be stacked squarely over one another to save space and simplify manifolding.

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• Genesis GB / GW Series Owner's Manual (600 KB Adobe PDF)
• Start Up Instructions (333 KB Adobe PDF)
• Genesis GW Series Spec Sheet - GW-200 thru GW-750 Series (206 KB Adobe PDF)
• Genesis GW Series Spec Sheet - GW-1000 thru GW-2100 Series (133 KB Adobe PDF)
• Genesis Spec Sheet - GB-500 and GB-750 Series (205 KB Adobe PDF)

Genesis FAQS

• What is the thermal efficiency of this unit?

  83.7%

• Can this unit be installed outside?

  You can install this unit outside if you order the outdoor kit, part number 210333 and you will need supply the size of the unit.

• What are the electrical requirements for this unit?

  You will need a 120V, 20 amp circuit to run this heater.

• How much water flow do you need to activate the flow switch?

  Approximately 2 gpm to close.

• What are the pressure ratings for the pressure switches?

  Blocked inlet = 0.20 negative inches
  Blocked outlet = 0.20 positive inches
  Blower prover = 0.30 positive inches

• Can these units be stacked?

  These units can be stacked with the appropriate stack rack kit,

  GW/GB 200 thru 400  part number  210427-001
  GW/GB 500 thru 750  part number 210427-000

• What codes are available on these units?

  FM, CSD-1, IRI, ILLINOIS, SCHOOL CODE, CALIFORNIA CODE. and NEW YORK CODE.

• Do these units come with a factory installed pump?

  The GW models all come with a factory installed pump, but the GB units do not (customer installed pumps).

• Do you have to use a storage tank with this unit?

  This unit can be used in a hydronic application without a storage tank as long as you use a primary/secondary plumbing arrangement.

• What type of combustion chamber does this unit have?

  The unit has a stainless steel burner with a horizontal copper finned heat exchanger.

• What kind of venting options does this unit have?

  This unit has multiple venting options; choose from several conventional or direct venting options. Multiple opening options; choose from inlet/outlet openings leaving top of the boiler, inlet/outlet leaving the rear of the boiler or any combination thereof. Exhaust outlet/combustion air intake openings can be easily adjusted in the field to meet  the needs of the application. Can be direct vented for up to 35’ without the aid of additional blowers; longer runs up to 60,’ are possible with fan assisted venting.  Can be vented vertically with economical type “B” pipe (horizontal runs require stainless steel venting materials).

   Direct Vent kit:

  GW/B 200 part number 210320-0:   60 feet equivalent direct vent
  GW/B 300 part number 210320-1:   60 feet equivalent direct vent
  GW/B 400 part number 210320-2:   35 feet equivalent direct vent
  GW/B 500 part number 210320-2:   35 feet equivalent direct vent
  GW/B 650 part number 210320-3:   35 feet equivalent direct vent
  GW/B 750 part number 210320-3:   35 feet equivalent direct vent

   Horizontal sidewall:

  GW/B 200 part number 210320-0:   110 feet equivalent direct vent
  GW/B 300 part number 210320-1:   110 feet equivalent direct vent
  GW/B 400 part number 210320-2:     50 feet equivalent direct vent
  GW/B 500 part number 210320-2:     50 feet equivalent direct vent
  GW/B 650 part number 210320-3:     50 feet equivalent direct vent
  GW/B 750 part number 210320-3:     50 feet equivalent direct vent

   Horizontal extended direct and sidewall power vent kits:

  GW/B 400-500:  part number 210395-000
  GW/B 650-750:  part number 210395-001

   Vertical direct vent terminal kits:

  GW/B 200 part number 210317-000:   60 feet equivalent direct vent.
  GW/B 300 part number 210317-001:   60 feet equivalent direct vent
  GW/B 400 part number 210317-002:   35 feet equivalent direct vent
  GW/B 500 part number 210317-002:   35 feet equivalent direct vent
  GW/B 650 part number 210320-3:       50 feet equivalent direct vent
  GW/B 750 part number 210320-3:       50 feet equivalent direct vent

• How much water does this unit hold?

  The unit will hold approximately one gallon of water for every 100,000 BTUs

Information Source: A.O. Smith