Hi Delta FlexGas Water Heaters, 302CD-902CD

Hi Delta FlexGas Water Heaters, 302CD-902CD

Although it is possible to convert almost any Hi Delta® unit from natural gas to propane, it does take some time. The patented FlexGas® system allows the unit to be plumbed to BOTH fuels, switching from operation on one fuel to the other with the turn of a key - without shutting down the unit at all!


  • Up to 85% efficiency
  • Multiple vertical venting and sidewall venting options. No extractor required for sidewall applications up to 70ft on room air.
  • All models indoor/outdoor certified
  • Patented burner “security blanket” enhances staged combustion, minimizes installation/start-up issues, and protects burners from metal fatigue.
  • 105ºF minimum inlet water temperature
  • Brass headers with copper finned tube heat exchanger standard. Glass lined cast iron headers and cupro-nickel tubes available as options. AB 1953 compliant.
  • VERSA IC® control package with LCD display
  • Status display lights
  • Cascade control of up to 8 units, no external sequencer required.
  • Diagnostics center with history in English , not in codes
  • Modbus RTU BMS port (RS485)
  • 0-10 VDC BMS Interface (set point or direct drive)
  • Ducted combustion air capable. TruSeal® CSA-Certified direct-vent available.
  • Certified under SCAQMD Rule 1146.2. Meets all Low NOx regulations.
      • 100% Factory fire-tested 
      • Fast, economical natural-to-propane gas switchover 
      • Thermal efficiency: 85% 
      • Versa IC® controller with LCD display 
      • Maximum Setpoint: 160°F (71.1°C) 
      • Maximum outlet temperature: 200°F (93.3°C) 
      • Minimum non-condensing inlet temperature: 105°F (40.6°C) 
      • Thermal shock proof heat exchanger 
      • Limited 20-year thermal shock warranty 
      • Limited 10-year cupronickel heat exchanger warranty 
      • Limited 5-Year copper heat exchanger warranty 
      • Full safety diagnostics with fault history 
      • PolyTuf powder-coated cabinet 
      • No combustible floor shield required 
      • Fan-assisted 
      • Patented burner security blanket 
      • SCAQMD Rule 1146.2 certified, Low NOx < 20 ppm 
      • Cascade up to 8 heaters – no external sequencer required 
      • Proudly assembled in the USA
    Technical specification
    • Unique ref.Hi-Delta-FlexGas-Water-Heaters-302CD-902CD
    • Collection setBoilers & Water Heaters
    • CollectionDomestic Hot Water Heaters
    • TypeObject (single object)
    • Date of publishing2020-10-01
    • Edition number1
    • Designed inUnited States
    • Manufactured inUnited States
    • BIMobject CategoryHVAC - Water heaters
    • IFC classificationHeat Exchanger
    • UNSPSC nameDomestic water heaters
    • UNSPSC code40101825
    • Uniclass 2015 CodePr_60_60_96
    • Uniclass 2015 DescriptionWater heaters
    • CSI MasterFormat 2014 Code22 34 00
    • CSI MasterFormat 2014 TitleFuel-Fired Domestic Water Heaters
    • OmniClass TitleHot Water Heaters
    • OmniClass Number23-31 29 00
    • CSI UniFormat II CodeD3090
    • CSI UniFormat II TitleOther HVAC Systems & Equipment

    Region availability

    North America
    United States