The Rinnai INFINITY N-Series are condensing* gas continuous flow water heaters designed for commercial applications and high hot water demand residential installations.
Available as an external unit (N56kWe) or an internal unit (N56kWi).
Features
- Full stainless steel heat exchanger and internal piping
- Inverted burner → longer service intervals (burner cleaning no longer required)
- Inbuilt control panel, parameters easily set
- Pump connectivity, the N-Series can power and control a circulating ring main
- Inbuilt temperature sensor, unit can run in-series with a circulating ring main
- Pre-mix burner, no gas pressure setting required → very easy gas-type conversion
- Daisy-chain electronic connection, very simple (and low cost) electronic connections
- 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.
- They are not suitable as a spa or swimming pool heater
- They are not suitable for hydronic applications
Gas type
Available for Natural Gas or LPG. Specify gas type at the time of purchase.
| Factory preset temp. | 75 °C (can be preset to deliver up to 85 °C) |
| N56kWe (ext) code/REU | INFN56N/L → REU-N3237WC-ZK |
| N56kWi (int) code/REU | INFN56FFN/L → REU-N3237FFC-ZK |
| Hot water capacity | 1.5-37 litres per minute. Nominal water capacity is 32 litres per minute at a 25°C 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: 1.13 kPa, 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 Min. water flow: 1.5 litres per minute (activation flow rate) |
| Noise level | Internal 49 dB(A), external 54 dB(A) |
| 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 and combustion fan rpm check |
| Weights | 29 kg |
| Compliance | ES: Supplier Declaration of Compliance Declaration numbers: • 1911920196 |
| Market release | January 2020 |
| Q&A 1 | Can an N-Series be used to replaced an older unserviceable Rinnai INFINITY in a bank of electronically connected appliances? Yes, as long as the N-Series is a slave unit and not the master. Refer attached for more information. |