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Installation Manual

ManualsBrandsRinnai ManualsCommercial Water HeatingDemand Duo™ H-Series Hybrid Water Heating System Indoor, Natural Gas, 398,000 BTU, 119 Gallon
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H-Series Demand Duo™ 2 Installation and Operation Manual 25
Refer to the Tankless Water Heater Installation and Operation Manual (supplied with each Tankless
Water Heater in the Demand Duo™ 2 system) for complete venting information and instructions. Topics
in this manual include: Venting Guidelines; Venting Installation Sequence and Instructions; Venting
Options; Maximum Vent Lengths; and Termination Considerations.
To secure the rack:
For vertical model installations, please refer to the recommended venting configuration shown in the
image below.
3 in. PVC
2 in. PVC
2 in. PVC