Rinnai INFINITY EF condensing continuous flow water heaters capture waste heat from the flue gas through the use of a secondary heat exchanger to help heat the water with less energy.
Suitable for
Hard or acidic water will need to be treated in order to use this product.
Not suitable
White
EF24
Grey
EF250 EFi250
95%
55 °C
Natural Gas or LPG, gas type specified at the time of purchase
| Model | Code NG | Code LPG | REU number |
| EF24 | EF24NCN | EF24NCL | REU-K2430WG |
| EF250 | INFEF250N | INFEF250L | REU-KM3237WD |
| EFi250 | INFEF250FFN | INFEF250FFL | REU-KM3237FFUD-ZK |
| Model | Input | Output kW |
| EF24 | 162 MJ/h or 45 kW | 43 kW |
| EF250/EFi250 | 211 MJ/h or 58.6 kW | 55.6 kW |
Direct electronic ignition
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.
| Model | NG | LPG |
| EF24 | 0.90, 1.50 | 0.75, 1.15 |
| EF250/EFi250 | 1.15, 1.9, 1.8* | 0.75, 1.15, 1.1* |
* = only one point
NG - 1.13kPa, LPG - 2.75 kPa
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.
50 dB(A). Some people are susceptible to low level noise. This needs to be considered if locating an appliance near a bedroom.
less than 60 ppm
All units have a standby of less than 3 W
Nominal operating pressure: 240-1000 kPa
Activation flow rate: 2.4 litres per minute (EF24) and 1.5 litres per minute (EF250/EFi250)
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.
EF24 - 27 kg
EF250/EFi250 - 32 kg
Energy Safety Supplier Declaration of Compliance declaration numbers:
EF24 first released in 2008, relaunched 2011
EF250/EFi250 - July 2011
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