Rinnai Demand Duo R Hybrid Water Heater, 199,000 BTU, 80 Gal, Natural Gas

A Rinnai Demand Duo R-Series commercial hybrid that teams a 199,000 BTU tankless engine with an 80-gallon tank on natural gas. It replaces a standard-efficiency tank in apartments, hotels and restaurants and vents into a 6 in. B-vent connector.

Venting is B-vent type. Because the tankless engine heats the water and the tank only holds it, the tank escapes thermal stress, lowering the chance of leaks and downtime. Individual parts can be repaired, and the lighter weight makes the unit easier to move into place.

The DuoSmart digital controller holds temperature tightly and manages recirculation without an aquastat. The gas swivel flex line rotates 360 degrees to meet the supply line. Energy efficiency is rated at 80%, and the system is recirculation capable and Wi-Fi capable.

Highlights

• 199,000 BTU tankless engine paired with an 80 gal tank

• Vents into a 6 in. B-vent exhaust connector

• Hybrid design keeps thermal stress off the tank

• DuoSmart controller, no aquastat required

• 80% energy efficiency, recirculation and Wi-Fi capable

Specifications

Good to know

• Gas-fired appliance: it must be installed, vented and commissioned by a qualified installer in line with local codes and the manufacturer's installation manual.