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Ultra 3-UE Condensing Gas Boiler

All Ultra boilers feature AFUE efficiencies in the range of 95.2 - 96.4%. These are some of the highest efficiencies in the industry, and when the Ultra is used in low-temperature applications such as radiant heating in can achieve efficiencies of up to 98%.

The Ultra boiler is designed to be environmentally friendly and exceeds the highest North American environmental air-quality standards.

Standard Features
  • ASME H-stamp Heat Exchanger
  • Cast Aluminum Block
  • Stainless Steel Burner
  • Negative Pressure Gas Valve
  • Sealed Combustion and electronic ignition
  • Fully packaged with:
    • Taco circulator
    • Sidewall vent kit
    • Pressure relief valve
    • Variable speed inducer fan
    • Outdoor temperature Sensor
    • Adjustable boiler legs
    • Condensate trap with drain tee
Smart Technology & Style
  • Easy adjustment for natural gas or propane
  • Ultra Control Module With:
    • 3.5" Digital display
    • Multiple boiler functionality
    • Alarm control functionality
    • Ignition control
    • High limit
    • Outdoor reset
    • Low water protection
    • DHW priority
    • Heating and DHW pump controls
  • Electronic ignition
  • PVC Venting Up To 100'
  • Sealed combustion
  • Floor Mount or Wallhung
Control and Safety
  • Maintains Optimal Air and Fuel Ratio at All Firing Rates

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Ultra Energy Star ASME
Model IDModel NameInput
Range MBH
DOE
Capacity MBH
IBR
Cap. MBH
AFUEWater
Content
Standard Taco
Pump Model
28629UG-8016.0 - 80.071.062.095.20.69007
28630UG-10521.0 - 105.094.081.095.30.82007
28631UG-15531.0 - 155.0139.0123.095.61.170014
28632UG-23046.0 - 230.0207.0183.095.41.570014
28633UG-29962.0 - 299.0270.0234.096.42.100014
28634UG-39980.0 - 399.0365.0317.091.72.102400-20
Model IDModel NameVent
Size
Water
Connections
Gas
Connection
HxWxDWeight
28629UG-802 or 311/243.1x22.7x22.1199
28630UG-1052 or 311/243.1x22.7x22.1207
28631UG-155311/243.1x22.7x22.1234
28632UG-2303 or 411/243.1x22.7x22.1246
28633UG-29941-1/43/447/75x22.7x22.1297
28634UG-39941-1/43/447/75x22.7x22.1297