The Rinnai 1600i(N) is a high-efficiency, internally mounted natural gas condensing water heater, designed for commercial and high-demand applications. Part of Rinnai’s next-generation N Series, this unit delivers outstanding efficiency, low emissions, and market-leading hot water performance.
Featuring a stainless steel primary heat exchanger, the W1600i(N) is built for long-term reliability and comes backed by extended warranties of up to 12 years. Its advanced Low-NOx burner technology ensures future compliance with stricter emission standards, while the 13:1 turndown ratio offers exceptional modulation and energy savings.
Capable of producing up to 37 litres per minute of hot water at precise temperatures (+/-1°C), the Rinnai 1600i can be installed as a single unit or cascaded in multiples for large-scale operations. A powerful integrated fan motor supports flue runs up to 46m, offering flexibility across a wide range of installation scenarios.
Whether for hotels, gyms, restaurants, care homes, or food processing, the 1600i delivers high-capacity, on-demand hot water with zero storage heat loss, whisper-quiet operation, and superior safety features.
58.4kW Output – Delivers up to 37 L/min of temperature-accurate hot water
Low-NOx Technology – Patented burner system meets future-ready emission standards
13:1 Turndown Ratio – Industry-leading modulation for high efficiency and low operating cost
Stainless Steel Heat Exchanger – Durable and backed by warranties of up to 12 years
Zero Heat Loss – No internal hot water storage for improved energy performance
Cascade Ready – Units can be linked to meet any commercial demand
Powerful Fan Motor – Supports flue runs up to 46m with built-in damper
Compact & Wall-Mountable – Lightweight (29kg) for flexible installation on wall or cascade frame
+/-1°C Temperature Accuracy – Maintains set point for comfort, safety, and efficiency
Advanced Safety Features – Includes temperature shut-off and exhaust overheat protection (EN26 standard)
Hydrogen-ready (20% blend) for future gas network compatibility
Modulates to match demand – saving energy and reducing emissions
Ideal for any commercial setting – from hospitality to healthcare and industry
Safe, scalable, and smart – ready to grow with your hot water needs
Meet high hot water demand with low emissions. The Rinnai 1600i(N) offers precision, performance, and future-ready technology. Order now or contact us for expert installation and configuration advice.
Oversized item (delivered on a pallet)
| Brand | Rinnai |
|---|---|
| Model | Rinnai 1600i(N) – W1600i(N) |
| Mounting | Internal wall-mounted or cascade frame |
| Gas Type | Natural Gas (20% Hydrogen Ready) |
| Heat Output | 58.4kW |
| Exhaust Type | Internal - forced room sealed - Concentric |
| Ignition | Electronic |
| Burner | Stainless Steel |
| Low NOx | Less than 20ppm |
| Flow Rate | 1.5 up to 37 litres per minute |
| Minimum Operating Pressure | 1.0 bar |
| Temperature Range | 40, 42, 50, 55, 60, 65, 75, 85°C |
| Temperature Accuracy | +/- 1°C of set point |
| Turndown Ratio | 13:1 |
| Heat Exchanger | Stainless steel |
| Weight | 29kg |
| Noise Level | 41dB(A) - Extremely quiet operation |
| Flue Run Capability | Up to 46m (with 80/125 concentric flue) |
| Booster Function | Yes (with ≥3 bar dynamic pressure and ≤40°C set point) |
| Control | Modulating - includes Digital temperature control |
| Connections | 3/4" BSP male |
| Electrical Supply | 230V AC 50Hz 1ph |
| Gas Consumption | Natural Gas - 5.6m³/h, LPG - 4.2kg/h |
| Dimensions | 670mm x 470mm x 222mm |
| Standards | EN26 compliant |
| Safety Features | Water temperature shut-off, exhaust temperature sensor |
| Suitable Applications | Ideal for commercial and industrial applications including hotels, gyms, restaurants, care homes, healthcare facilities, and food production environments |
| Warranty | 1 Year Labour & 3 Years Parts. Up to 12 Years when commissioned & serviced by Rinnai |
58.4kW High-Efficiency Output – Delivers up to 37 litres per minute of temperature-accurate hot water
Low-NOx Condensing Technology – Futureproof burner system ensures low emissions and energy savings
13:1 Turndown Ratio – Industry-leading modulation adapts output to demand for maximum efficiency
Stainless Steel Primary Heat Exchanger – Corrosion-resistant and backed by up to 12-year warranty
Hydrogen-Ready (20% Blend) – Compatible with the UK’s evolving low-carbon gas infrastructure
Built-In Fan Motor with Flue Damper – Supports flue runs up to 46m with Rinnai 80/125 flue system
Zero Storage, Zero Heat Loss – On-demand hot water delivery reduces standby energy waste
+/-1°C Temperature Accuracy – Delivers precise, consistent water temperature for safety and comfort
Cascade System Compatible – Multiple units can be linked to meet high-volume commercial demand
Compact & Lightweight – 29kg wall-mountable design for flexible installation options
Advanced Safety Features – Includes automatic shut-off sensors and EN26 standard compliance
