Rinnai CHS HCX Vertical Hybrid Water System, 320,000 BTU, 119 Gal, Natural Gas

A vertical Demand Duo H-Series hybrid from Rinnai that couples 320,000 BTU of condensing tankless heating with 119 gallons of storage. It is aimed at hotels, restaurants and larger commercial buildings that face heavy peak draws on natural gas.

The tankless engines heat the water while the tank simply holds it, so the tank sees no thermal stress and lasts longer with less risk of leaks or downtime. Repairs can target a single part instead of a full system replacement. The DuoSmart digital controller sets temperature precisely and runs recirculation without an aquastat, and the system is Wi-Fi capable.

A factory-installed gas dirt leg, accessible electrical connection and preassembled condensate drain cut field work, and the gas swivel flex line rotates a full 360 degrees. The CU160 engines are 97% thermally efficient, Ultra Low NOx compliant and ENERGY STAR certified. Overall weight is as much as 37% lower than a high-efficiency tank.

Highlights

• 320,000 BTU of condensing tankless input feeding a 119 gal tank

• CU160 engines rated at 97% thermal efficiency

• Vertical configuration with 119 gal of storage

• Ultra Low NOx compliant and ENERGY STAR certified

• DuoSmart digital control, 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.