Rinnai 1600i Internal 58.4kW Low-NOx Condensing Natural Gas Water Heater

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SKU
W1600I(N)-NG
£2,652.00 £2,210.00
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Description

Rinnai 1600i Internal 58.4kW Low-NOx Condensing Natural Gas Water Heater

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.

Key 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)

Why Choose the Rinnai 1600i(N)?
  • 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.

Specification

Rinnai 1600i Internal 58.4kW Low-NOx Condensing Natural Gas Water Heater Specification

Oversized item (delivered on a pallet)

BrandRinnai
ModelRinnai 1600i(N) – W1600i(N)
MountingInternal wall-mounted or cascade frame
Gas TypeNatural Gas (20% Hydrogen Ready)
Heat Output58.4kW
Exhaust TypeInternal - forced room sealed - Concentric
IgnitionElectronic
BurnerStainless Steel
Low NOxLess than 20ppm
Flow Rate1.5 up to 37 litres per minute
Minimum Operating Pressure1.0 bar
Temperature Range40, 42, 50, 55, 60, 65, 75, 85°C
Temperature Accuracy+/- 1°C of set point
Turndown Ratio13:1
Heat ExchangerStainless steel
Weight29kg
Noise Level41dB(A) - Extremely quiet operation
Flue Run CapabilityUp to 46m (with 80/125 concentric flue)
Booster FunctionYes (with ≥3 bar dynamic pressure and ≤40°C set point)
ControlModulating - includes Digital temperature control
Connections3/4" BSP male
Electrical Supply230V AC 50Hz 1ph
Gas ConsumptionNatural Gas - 5.6m³/h, LPG - 4.2kg/h
Dimensions670mm x 470mm x 222mm
StandardsEN26 compliant
Safety FeaturesWater temperature shut-off, exhaust temperature sensor
Suitable ApplicationsIdeal for commercial and industrial applications including hotels, gyms, restaurants, care homes, healthcare facilities, and food production environments
Warranty1 Year Labour & 3 Years Parts. Up to 12 Years when commissioned & serviced by Rinnai
Features

Rinnai 1600i Internal 58.4kW Low-NOx Condensing Natural Gas Water Heater Features

  • 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

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