The Rinnai 1600i(N) is a high-efficiency, internally mounted LPG 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)
BioLPG-ready 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.
*Please note this water heater includes an easy to fit LPG conversion kit, allowing you to seamlessly switch between natural gas and liquid petroleum gas for uninterrupted hot water.
Oversized item (delivered on a pallet)
| Brand | Rinnai |
|---|---|
| Model | Rinnai 1600i(N) – W1600i(N) |
| Mounting | Internal wall-mounted or cascade frame |
| Gas Type | LPG (BioLPG 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
BioLPG-Ready – 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
