Rinnai IP120199C Combi Boiler, Natural Gas/Propane, 120,000 BTU Heat, 9.8 GPM

This Rinnai I Series Plus C condensing combi boiler supplies both space heating and domestic hot water from one unit. It pairs 120,000 BTU of central heating with 199,000 BTU for hot water and up to 9.8 GPM of flow. It is built for indoor wall mounting in larger homes.

Inside, a stainless steel water-tube condensing heat exchanger works with a modulating wire mesh burner and a separate plate heat exchanger for domestic water. Outdoor reset control with a sensor comes standard, along with priority or proportional hot water control, and combustion is sealed and direct vented. It is rated for natural gas or liquid propane and includes Smart Sense adaptive gas technology.

For bigger jobs, up to 24 units can be cascaded and up to 8 can share common venting. Four built-in zones, seven reset curves, an improved front display and a quick set-up screen simplify commissioning, while Smart Connect provides Wi-Fi and Bluetooth access through the Rinnai Central app. Electrical draw is 14 A at 120 V, and the unit is approved for altitudes to 10,100 ft.

Highlights

• 120,000 BTU central heating plus 199,000 BTU domestic hot water

• Hot water flow up to 9.8 GPM

• Stainless steel water-tube condensing heat exchanger with modulating burner

• Cascade up to 24 units; common vent up to 8

• Certifications: ANSI, ASME, CSA, UL, Energy Star

• Outdoor reset sensor and hot water priority control standard

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.