CHS398100HCXVAiN CHS-HCX2 Model Series

With Rinnai’s new Demand Duo H-Series, reliable hot water comes in a high-performance, high-efficiency package that also reduces cost of ownership. Rinnai’s hybrid technology is unlike anything else on the market, ensuring a longer service life than high-efficiency tanks, while also saving valuable commercial space. The tankless engines for the Demand Duo 2V are stacked vertically to deliver redundancy and eliminate "no hot water" events that affect profitability.

  • Uniform Energy Factor (UEF): 0.98
  • 15,000 BTU (minimum)
    398,000 BTU (maximum)
  • Indoor
  • Warranty
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With Rinnai’s new Demand Duo H-Series, reliable hot water comes in a high-performance, high-efficiency package that also reduces cost of ownership. Rinnai’s hybrid technology is unlike anything else on the market, ensuring a longer service life than high-efficiency tanks, while also saving valuable commercial space. The tankless engines for the Demand Duo 2V are stacked vertically to deliver redundancy and eliminate "no hot water" events that affect profitability.

33 in. X 79 in. X 40 in. (838 mm x 2007 mm x 1016 mm)

Supply Connections

Connection Connection Size
Gas 1-1/2"MNPT
Cold Inlet 1-1/2" MNPT / (38 mm)
Hot Outlet 1-1/2"MNPT
Condensate Drain 1
Product Depth 40 inch / (1016mm)
Product Height 79 inch / (2007 mm)
Product Width 33 inch / (838 mm)
Product Weight 530 lb / (240 kg)
Gas Type Natural Gas
Installation Type Indoor
Recirculation Capable Yes
Uniform Energy Factor (UEF) 0.98
Wi-Fi Capable Yes
SCAQMD Approved Ultra Low NOx

Warranty information is available in the Installation & Owner Manual.

Browse product manuals, spec sheets, and other documentation below.

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100000872 Demand Duo 2 H-Series with SENSEI CX Installation Instructions
PDF 6 MB
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US - Demand Duo Hybrid Commercial Water Heating Solutions
PDF 5 MB
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100001015 CHS398100HVCXAiN Engineering Specification
PDF 202 KB
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Demand Duo H-Series with SENSEI CX Specification Sheet English
PDF 2 MB
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Warranty Demand Duo
PDF 289 KB
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