Operation-Manual
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Demand Duo
Hot water reliability delivered on demand.
The Rinnai Demand Duo combines high-efficiency continuous flow water heaters with insulated storage technology to deliver consistent, reliable hot water performance, even during periods of peak demand.
Model
Highlights
- Ideal for hotels, apartment blocks and student accommodation
- Recommended for when hot water usage is consistent and predictable
- Large plumbing connections support high flow rates, while modular construction and flexible heat source placement simplify installation and transport
- Ideal for projects with limited gas supply, with a choice of internal or external units to suit installation requirements
- The stand-alone Demand Duo 1 enables quick replacement and easy installation, while single-lift modular design and optional dual pumps and controls support fast deployment and enhanced system redundancy
- Various Heavy Duty Continuous Flow heater options available
- • Grade 444 Stainless Steel Storage Tanks* with 250L and 315L storage capacity
- • Grade 316 Stainless Steel Storage Tank** with 250L, 315L and 420L storage capacity
- • Vitreous Enamel Coated Storage Tanks*** with 270L, 330L and 440L storage capacity
- Innovative controller with push button interface and LCD display
Resources
Specification
Demand Duo Storage System Specification Guide
Specification
Dual Hot Water Circulation Pumps Specification Guide
Operation-Manual
Commercial Controller Operation and Installation Manual
Installation-Manual
Demand Duo 1 Storage System Flue Adaptor Installation Manual
Warranty
Commercial Hot Water Warranty Booklet
Diagram
PDF Installation Diagrams - Demand Duo 1 zip file
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PDF Installation Diagrams - Demand Duo 2 zip file
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PDF Installation Diagrams - Demand Duo 3 zip file
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PDF Installation Diagrams - Demand Duo 4 zip file
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PDF Installation Diagrams - Demand Duo 5 zip file
Diagram
PDF Installation Diagrams - Demand Duo 6 zip file
Diagram
PDF Installation Diagrams - Demand Duo Pump Set zip file
Diagram
PDF Installation Diagram - Demand Duo Horizontial Tank
Diagram
DWG Installation Diagrams - Demand Duo 1 zip file
Diagram
DWG Installation Diagrams - Demand Duo 2 zip file
Diagram
DWG Installation Diagrams - Demand Duo 3 zip file
Diagram
DWG Installation Diagrams - Demand Duo 4 zip file
Diagram
DWG Installation Diagrams - Demand Duo 5 zip file
Diagram
DWG Installation Diagrams - Demand Duo 6 zip file
Diagram
DWG Installation Diagrams - Demand Duo Pump Set zip file
Diagram
DWG Installation Diagram - Demand Duo Horizontial Tank
Diagram
RFA Installation Diagrams - Demand Duo 1 zip file
Diagram
RFA Installation Diagrams - Demand Duo 2 zip file
Diagram
RFA Installation Diagrams - Demand Duo 3 zip file
Diagram
RFA Installation Diagrams - Demand Duo 4 zip file
Diagram
RFA Installation Diagrams - Demand Duo 5 zip file
Diagram
RFA Installation Diagrams - Demand Duo 6
Diagram
RFA Installation Diagrams - Demand Duo 7 zip file
Diagram
RFA Installation Diagrams - Demand Duo 8 zip file
Diagram
RFA Installation Diagrams - Demand Duo 9 zip file
Diagram
RFA Installation Diagrams - Demand Duo 10 zip file
Diagram
RFA Installation Diagrams - Demand Duo Horizontial Tank
Disclaimer / Footnotes
Product codes: DD1 - DD10
