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

This Rinnai Demand Duo R Series hybrid combines a 199,000 BTU tankless engine with an 80-gallon tank for liquid propane sites. It suits smaller commercial jobs such as restaurants and apartment buildings that would otherwise use a standard-efficiency tank.

Exhaust runs into a 6 in. B-vent connector. Heating takes place in the tankless engine instead of the tank, which keeps thermal stress off the vessel for a longer life. Parts can be repaired one by one, and the reduced weight helps during handling.

The DuoSmart digital controller maintains set temperature and manages recirculation with no aquastat. A gas swivel flex line turns 360 degrees for easier connection. The system has an 80% energy efficiency rating and is recirculation and Wi-Fi capable.

Highlights

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

• Connects to a 6 in. B-vent exhaust connector

• Tank avoids thermal stress for a longer service life

• DuoSmart digital control without an aquastat

• 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.