Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU Bosch
Greenstar 100 Condensing Gas Combi Boiler, 79,000 BTU
Brand: Bosch
Part#: ZWB28-3
Model: Greenstar Combi 100
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Description

Rebate:
This boiler meets the requirements for a federal tax credit and qualifies for a 30% (up to $600) rebate. Click here for more info.

Bosch Greenstar series, 100-ZWB28-3 model, wall-mounted combi gas condensing boiler (heat + tankless DHW) with 79,000 kBTU (Net) rating. Energy Star rated. Built-in pump, heat exchanger and expansion tank. Includes LPG conversion kit, 3" twin pipe adapter and outdoor reset control.

Technical Specifications:
  • Input (BTU): 24,600 - 100,800
  • DOE Rating (BTU): 91,000
  • Net IBR Rating (BTU): 79,000
  • 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" NPT
  • Gas Connection: 3/4" NPT
  • Condesate Amount Produced: 0.6 Gal/hr (@ 86°F)
  • Max. Working Pressure: 30 psi
  • Max. Boiler Output Water Temperature: 190°F
  • Domestic Water Connections: 3/4" NPT
  • 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: Wall-hung (wall-mounted)
  • Dimensions (Depth x Width x Height): 13.9" x 17.4" x 33.5"
  • Weight (lbs): 110.2
  • Water Volume (gallons): 0.952
  • Max. DHW Flow @ 72°F Rise: 2.65.

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FAQs (1)

Ask a Question
How many sq ft can this boiler heat
Helpful? Yes -1 No
It would depend on the heat loss calculations. The boiler's NET output should exceed the total heat loss in order to be effective.
By PexUniverse Customer Service on 11/15/2019

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