Features:

• Stainless steel heat exchanger and internal piping

• Inverted burner, burner cleaning no longer required

• Inbuilt control panel, parameters easily set

• Inbuilt temperature sensor

• Premix burner, no gas pressure setting required

• Low cost and easy electronic connection

• Powerful fan allows a lower cost common flue to be installed (available ex-stock)

Suitable for: External commercial and residential applications (N56kWe external model only). Internal commercial and residential applications (N56kWi internal model only). Mains and medium pressure systems. Hard or acidic water will need to be treated to use this product.

Condensing technology: Utilises a secondary heat exchanger to drive further thermal efficiency by extracting heat from combusted flue gases, making the N-Series models 97% efficient.

Not suitable:
- as spa or swimming pool heater
- for hydronic applications
- for domestic ring main applications

Gas type: Available for Natural Gas or LPG, specify at the time of purchase

Colour: Gunmetal grey

Factory preset temperature: 55 ºC (can be preset to deliver up to 85 ºC*)

* Models made before May 2020, serial number before 20.05000001 were preset to 75 ºC
** Maximum temp. for circulating systems is 65 ºC

Codes and REU numbers:

• N56kWe external - INF56N/L, REU-N3237WC-ZK

• N56kWi internal - INF56FFN/L, REU-N3237FFC-ZK

Hot water capacity:

1.5-37 litres per minute. Nominal water capacity is 32 litres per minute at a 25 ºC rise (1920 L/h)

Exhaust system: External unit - forced flue, Internal unit - room sealed forced flue

Frost protection: Fitted as standard. Frost protection operates automatically, as long as the appliance is connected to the electrical power supply, by activating when the temperature inside the unit drops below 3.5 °C, and turns off once the temperature inside the unit reaches 7 °C.

Ignition system: Direct electronic ignition

Ingress protection rating: IPX5

Line pressure (min.): NG - 1.13kPa, LPG - 2.75 kPa

Line pressure (max.): 3.5 kPa (maximum standing pressure under abnormal intermittent conditions is 5.0 kPa). In the case of commercial metering, (i.e. 35-37 kPa coming in), there may be a requirement to regulate the incoming pressure down.

Power consumption:

• Normal: 70 W (NG), 85 W (LPG)

• Standby: 2.4 W

• Automatic frost protection: 154 W (external), 150 W (internal)

Water supply: Nominal operating pressure: 300-1000 kPa. Activation flow rate: 1.5 litres per minute

Please note: If the water inlet pressure or flow rate drops below the minimum values stated above, operation of the INFINITY is not guaranteed. The unit requires both minimum flow rate and pressure to operate correctly.

Noise level: Internal models 49 dB(A), external model 54 dB(A). Some people are susceptible to low level noise. This needs to be considered if locating an appliance near a bedroom.

NOx af: Less than 50 ppm

Flue combustion analysis: Co/CO2 for nominal conditions:

• NG maximum load 144 ppm / 9.4%

• LPG maximum load 95 ppm / 10.1%

Safety devices: Flame failure, Boil-dry protection, Overheat protection, Fusible link, Pressure relief valve, Combustion fan RPM check

Weight: 29 kg

Compliance: Energy Safety Supplier Declaration of Compliance: Declaration number - 1911920196

Market release: January 2020

Gas and electric hot water heating brochure

Rinnai INFINITY continuous flow water heating spec guide

Rinnai INFINITY continuous flow operation guide

N-Series installation guide

N-Series product technical statement

N56kWi internal individual polypropylene flue installation

N56kWi internal common polypropylene flue installation

N56kWe external exploded diagrams and spares list

N56kWi internal exploded diagrams and spares list

Commercial maintenance and servicing schedule

Rinnai INFINITY warranty