Rinnai - N Series 1600 Internally Mounted Gas Fired Commercial Water Heater - W1600i

Rinnai N Series W1600i(N) – Internally Mounted Gas-Fired Commercial Water Heater

The Rinnai W1600i(N) is a high-efficiency, low-NOx commercial water heater engineered for performance, durability, and futureproofing. Internally mounted and designed for commercial hot water demand, it is hydrogen-blend ready and compatible with BioLPG, offering a robust, temperature-accurate solution across a wide range of applications.

Features:

• Independently tested for 20% hydrogen blend compatibility
• Stainless steel primary heat exchanger
• Independently tested for use with BioLPG
• 13:1 turndown ratio – best in class
• High-capacity hot water flow up to 1500 L/hr at commercial temperatures
• 96% gross efficiency
• Turbo-fan system with built-in flue damper
• Switching Venturi and advanced electronic control system
• Room sealed or common header flue options
• Remote monitoring and BMS integration support
• Supplied for Natural Gas with easy LPG conversion kit included

Specifications:

• Model: W1600i(N)
• Mounting: Internal wall-mounted (cascade frame compatible)
• Output: Up to 1500 L/hr
• Flow Rate: Up to 37 L/min
• Efficiency: 96% gross
• Turndown Ratio: 13:1
• Flue Length Capability: Up to 46m with 80/125 concentric flue
• Power Supply: Electronic ignition system
• Gas Type: Natural Gas (NG) / LPG (conversion capable)

Dimensions:

• Unit Type: Internally mounted
• Installation Options: Wall mount or cascade frame
• Flue Options: Room-sealed, common header
• Height: 670mm
• Width: 470mm
• Depth: 276mm
• Weight: 29kg

Performance & Application:

The W1600i(N) is capable of delivering hot water with ±1˚C accuracy even under high demand. It includes a flow booster feature for even greater output when conditions allow (3 bar dynamic pressure at ≤40°C set point).

Safety Features:

• Water temperature safety shut-off (activates at +3˚C over set point)
• Exhaust temperature sensor (prevents overheating of flue system)
• Compliant with EN26 safety standards

Detailed Technical Specifications:

• Burner: Pre Mix Zero Governor
• Heat Exchanger: Stainless Steel
• Weight: 29kg
• Maximum Input: 58.3kW
• Minimum Input: 4.4kW
• Turn Down Ratio: 13:1
• Efficiency: 96%
• Maximum Set Temperature: 85°C
• Flow Rate at ΔT 25°C: 32.1 L/min
• Flow Rate at ΔT 30°C: 26.7 L/min
• Flow Rate at ΔT 35°C: 22.9 L/min
• Flow Rate at ΔT 40°C: 20.0 L/min
• Flow Rate at ΔT 45°C: 17.8 L/min
• Flow Rate at ΔT 50°C: 16.0 L/min
• Minimum Flow Rate: 1.5 L/min
• Max Number of Sequenced Heaters: Up to 24
• Flue Run Capability: Up to 46m
• Built-in Flue Damper: Yes
• Air Inlet Filter: Yes