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Bock optiTHERM® Modulating Condensing Gas Water Heaters - 300,000 - 500,000 BTU/hr Series
Bock Water Heaters, Inc.

Bock optiTHERM® Modulating Condensing Gas Water Heaters - 300,000 - 500,000 BTU/hr Series

Non-ASME Modulating Condensing Gas Water Heater

Up to 99% Thermal Efficiency by Modulating Fuel Input to Supply Variable Domestic Hot Water Demand

optiTHERM® for Optimal Thermal Efficiency:

  • Maximum inputs from 300,000 to 500,000 BTU/hr
  • Up to 6:1 turndown ratio
  • Fully modulating from as low as 80,000 BTU/hr
  • 119/125 gallon capacities
  • Up to 99% thermal efficiency
  • NEW front venting
  • NEW minimum gas supply pressure 3.5" WC (NAT) and 8" WC (LP)
  • Automated Cathodic Corrosion Protection System
  • NO SACRIFICIAL ANODE RODS
  • Five-Year Tank/Heat Exchanger Warranty
  • Ultra Low NOx Operation (20 ppm / 14 ng/J)
  • LCD User Interface with Optional BMS Interface
  • Ecomate® insulation
  • PVC/CPVC/ABS venting - 240' maximum power vent length
  • Glass-Fused-to-Steel Water Vessel/Heat Exchanger
  • Stealth Quiet™ Operation
  • Fits through a 36-inch door
  • Concentric vent kit available

    • ASME Modulating Condensing Gas Water Heater

    Up to 99% Thermal Efficiency by Modulating Fuel Input to Supply Variable Domestic Hot Water Demand

    optiTHERM® for Optimal Thermal Efficiency:

  • Maximum inputs from 300,000 to 500,000 BTU/hr
  • Up to 6:1 turndown ratio
  • Fully modulating from as low as 80,000 BTU/hr
  • 119/125 gallon capacities
  • Up to 99% thermal efficiency
  • NEW front venting
  • NEW minimum gas supply pressure 3.5" WC (NAT) and 8" WC (LP)
  • Automated Cathodic Corrosion Protection System
  • NO SACRIFICIAL ANODE RODS
  • Five-Year Tank/Heat Exchanger Warranty
  • Ultra Low NOx Operation (20 ppm / 14 ng/J)
  • LCD User Interface with Optional BMS Interface
  • Ecomate® insulation
  • PVC/CPVC/ABS venting - 240' maximum power vent length
  • Glass-Fused-to-Steel Water Vessel/Heat Exchanger
  • Stealth Quiet™ Operation
  • Fits through a 36-inch door
  • Concentric vent kit available
    • Specification

    • heater

      water heater

      storage water heater

      modulating water heater

      high efficiency water heater

      condensing water heater

      gas water heater

    Technical specification
    • Unique ref.optiTHERM-Modulating-Condensing-Gas-Water-Heater-300-500-GEN2
    • Product familyStorage Water Heaters
    • Product groupoptiTHERM®
    • TypeObject (single object)
    • Date of publishing2021-02-01
    • Edition number1
    Related
    • Designed inUnited States
    • Manufactured inUnited States
    Classification
    • BIMobject CategoryHVAC - Water heaters
    • UNSPSC nameCommercial water heaters
    • UNSPSC code40101826
    • Uniclass 2015 CodePr_60_60_96_34
    • Uniclass 2015 DescriptionGas-fired storage water heaters
    • CSI MasterFormat 2014 Code22 34 36
    • CSI MasterFormat 2014 TitleCommercial Gas Domestic Water Heaters
    • OmniClass Number23-31 29 00
    • OmniClass TitleHot Water Heaters

    Region availability

    North America
    Canada
    United States

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