Experience unmatched performance and energy savings with the Rinnai CU Series Super High-Efficiency 3-Unit Interior Wall Hanging Rack. Engineered for demanding food service and hospitality applications, this modular wall-mounted design delivers continuous hot water while maximizing space and efficiency.

With an impressive Uniform Energy Factor (UEF) of 0.98 and 97% thermal efficiency, the Rinnai CU Series ensures reduced energy costs and superior performance. This 3-unit rack system offers a combined output up to 597,000 BTU, capable of delivering 33 GPM for high-demand commercial kitchens.

Ideal for replacing traditional storage tanks or older HE systems, the CU Series’ advanced features — including Wi-Fi capability, recirculation readiness, and Ultra Low NOx compliance — make it a smart, sustainable, and future-proof investment for your business.

Key Features:

• Super High-Efficiency Performance – 0.98 UEF and 97% thermal efficiency for lower energy consumption.
• Compact Wall-Mounted Design – Frees up valuable floor space while providing easy maintenance access.
• High BTU Output – 15,000 to 597,000 BTU range for consistent hot water in high-demand environments.
• Smart Connectivity – Wi-Fi capable for convenient system monitoring and control.
• Recirculation Ready – Designed to reduce wait times and water waste.
• Ultra Low NOx Emissions – Environmentally responsible and SCAQMD approved.
• Ideal for Commercial Use – Perfect for restaurants, hotels, and industrial kitchens.
  

What’s Included

• (3) Rinnai CU Series Tankless Units (Propane)
• Wall Hanging Mounting Rack System
• Pre-Assembled Manifold Connections
• User & Installation Manual
• Wi-Fi Module (pre-integrated)
  

Specifications:

Care & Maintenance Instructions

• Schedule annual professional servicing to ensure maximum efficiency.
• Inspect for debris or dust around vents and air intakes regularly.
• Use only approved Rinnai cleaning solutions for internal flushing and descaling.
• Check and clean water filters and recirculation lines periodically.
• Keep Wi-Fi connection active for system alerts and performance monitoring.