Greenstar FS 57 Condensing Gas Boiler, 45,000 BTU
Brand: Bosch
Part#: KBR16-3
Model: Greenstar FS 57
Usually ships: within 8-10 business days
Bosch Greenstar series, FS-57-KBR16 model, floor-standing heat-only gas condensing boiler with 45,000 BTU (Net) rating. Includes built-in pump, LPG conversion kit, 3" twin pipe adapter and outdoor reset control.

Technical Specifications:
  • Input (BTU): 12,900 - 57,200
  • DOE Rating (BTU): 52,000
  • Net IBR Rating (BTU): 45,000
  • Efficiency (AFUE): 95%
  • Boiler Type: Condensing
  • Turndown (Modulation) Ratio: 5 : 1
  • Fuel Type: Natural Gas (NG) or Propane (LP)
  • System Type: Hydronic (Hot Water)
  • Boiler Connections: 1-1/4" NPT
  • Gas Connection: 3/4" NPT
  • Condesate Amount Produced: 0.32 Gal/hr (@ 86°F)
  • Max. Working Pressure: 30 psi
  • Max. Boiler Output Water Temperature: 190°F
  • Vent Size: 2" (up to 81ft w/ 1 elbows) or 3" (up to 100ft w/ 4 elbows)
  • Vent Material: PVC, CPVC, Single Wall (Rigid) PolyPropylene, Flex PolyPropylene, Cat III St. Steel
  • Inlet Gas Pressure (WC): 3.5 - 10.5" (for NG), 8 - 13" (for LP)
  • Max. Elevation: 6,000 ft
  • Mounting Type: Floor-standing
  • Dimensions (Depth x Width x Height): 21.9" x 19" x 41"
  • Weight (lbs): 132
  • Water Volume (gallons): 0.952.
 
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