Suitable for:
- external residential applications only
- mains and medium pressure systems

Hard or acidic water will need to be treated to use this product.

Not suitable:
- as a spa or swimming pool heater
- for hydronic applications
- as a gas boost for solar connections

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

Available fixed temperatures: 40, 42, 50, 55, 60, 65 °C

Codes and REU numbers:

• A16: INFA16N/L, REU-A1620WG-ZK

• A20: INFA20N/L, REU-A2024WG-ZK

• A24: INFA24N/L, REU-A2426WG-ZK

• A26: INFA26N/L, REU-A2626WG-ZK

Hot water capacity:

• A16: 1.5-16 L/min

• A20: 1.5-20 L/min

• A24: 1.5-24 L/min

• A26: 1.5-26 L/min

Input and output:

A16: Input MJ/h: 16.3-124 / Output kW: 27.8

A20: Input MJ/h: 19.9-156 / Output kW: 34.9

A24: Input MJ/h: 16.3-184 / Output kW: 42.0

A26: Input MJ/h: 16.3-199 / Output kW: 44.5

Exhaust system: 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

Injector sizes:

A16: NG: 0.9, 1.50 / LPG: 0.71, 1.09

A20-A26: NG: 1.08, 1.80 / LPG: 0.73, 1.12

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: 47 W (A16), 58 W (A20), 56 W (A24), 66 W (A26)

• Standby: 2 W

• Automatic frost protection: 68 W

Pressure relief: Valve opens at 2060 kPa, closes at 1470 kPa

Water supply: Nominal operating Pressure: 

• A16: 120-1000 kPa

• A20: 160-1000 kPa

• A24 & A26: 200-1000 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: 50 dB(A). Some people are susceptible to low level noise. This needs to be considered if locating an appliance near a bedroom.

NOx af: 35 ppm

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

Weights: A16: 13 kg, A20: 14 kg, A24/A26: 15 kg

Compliance: Energy Safety Supplier Declaration of Compliance declaration numbers:

• A16 - 1825920179

• A20 - 1825820179

• A24 - 1825720179

• A26 - 1825620179

Market release: 2018

See warranty information in Product Downloads

Gas & electric hot water heating brochure

Rinnai INFINITY continuous flow water heating spec guide

Rinnai INFINITY continuous flow operation guide

EF26 and A-Series installation guide

A-Series product technical statement

A-Series seismic force calculation

A-Series exploded diagrams and spares list

Rinnai INFINITY warranty