Navien 54kW Combi Boiler Internal NCB700 3S+/54K

The Navien NCB700 3S+/54K 54kW Combi Boiler is engineered to exceed expectations for large properties requiring powerful hot water and heating solutions. This boiler supports the simultaneous delivery of hot water to up to three bathrooms with an industry-leading DHW flow rate of 22.1 liters per minute (at a 35°C temperature rise). The built-in domestic hot water (DHW) recirculation pump minimizes water wastage by ensuring quick and efficient hot water delivery.

Equipped with ASME-certified stainless steel heat exchangers, the NCB700 is designed for durability and long-term efficiency. The advanced flow adjustment and auto-mixing valves deliver precise hot water temperature control, ensuring optimal comfort. The 15:1 turndown ratio allows for precise modulation, offering significant energy savings by adjusting output based on demand.

Hydrogen-ready technology (20% blend) ensures the boiler is prepared for future energy standards, while the NaviCirc system enables simple setup for the hot water return system. Additionally, the boiler’s digital display and built-in setup wizard make it easy to install and operate.

Key Features:

• Industry-Leading Flow Rate: Delivers up to 22.1 LPM at 35°C rise, serving three bathrooms simultaneously.
• Built-In DHW Recirculation Pump: Minimizes water wastage and ensures fast delivery of hot water.
• ASME-Certified Stainless Steel Heat Exchangers: Provide long-term durability and maximum efficiency.
• 15:1 Turndown Ratio: Offers precise modulation for superior energy savings and performance.
• Hydrogen-Ready Technology: Future-proof, supporting a 20% hydrogen blend for evolving energy standards.
• NaviCirc Hot Water Return System: Simplifies hot water recirculation setup to reduce water waste.
• Digital Display Panel: Includes a built-in setup wizard for effortless installation and operation.
• High Efficiency: Achieves an ErP rating of 94% with A+ efficiency when used with Smart Plus thermostats for multizone heating.

Technical Specifications:

• Model Number: PNCB7000054L001
• Fuel Type: Natural Gas / LPG
• Heat Output (CH): 54 kW
• DHW Output (Min/Max): 3.5 / 54.0 kW
• DHW Flow Rate (35°C Rise): 22.1 l/min
• CH Condensing Max Output: 37.1 kW
• ERP Rating: A
• Noise Level: 51 dBA
• Maximum Vertical Flue (125mm): 70 meters
• Maximum Vertical Flue (100mm): 21 meters
• Maximum Horizontal Flue (100mm): 21 meters
• Nox Class: 6
• Solar Compatible: Yes
• Dimensions: 695mm (Height), 440mm (Width), 353mm (Depth)
• Warranty: 12 years

For large properties requiring high-performance heating and hot water solutions, the Navien NCB700 3S+/54K Combi Boiler is the ideal choice. Combining cutting-edge technology, future-proof energy efficiency, and exceptional reliability, this boiler offers long-term value and performance.