Discontinued Product, please contact 0800 RINNAI for more information

Discontinued Product, please contact 0800 RINNAI for more information

Infinity 20 External (REU-2020W)

Infinity 20 External (REU-2020W)


Temperature controlled continuous gas flow hot water system, with status monitor, for external domestic applications.

Hot water capacity
2.4 to 20 litres per minute.

Energy efficiency

Compatible controllers
• MC-33-A (kitchen)
• BC-45-2A (bathroom)
• BSC-45-2A (bathroom 2)

Suitable for
Suitable for homes with up to two bathrooms.

Gas type
Available for Natural Gas or LPG. Gas type specified at time of purchase.

Colour: White
Input: 188 MJ/h
Efficiency: 80%
REU Number: REU-2020W


Connections Gas supply: R ¾ 20A (right)
Cold water inlet: R ¾ 20A (centre)
Hot water outlet: R ¾ 20A (left)
Dip Switch Settings Available 40, 43, 55, 60, 65, 75 °C
Hot Water Capacity 2.4-20 L/min at a 25 °C rise (1200 L/h)
Ignition System Direct electronic ignition
Injector Size NG - 1.70 mm, LPG - 1.00 mm
Line Pressure Min. NG - 1.13 kPa, LPG 2.75 kPa
Line Pressure Max. 3.5 kPa (max. 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 line pressure down.
Minimum Operating Pressure 150 kPa
Nominal Operating Pressure 150~830 kPa
Noise Level 49 dB(A)
Power Consumption Normal - 55 W, standby - 8 W, anti frost protection 80 W
Power Supply AC240 V 50 Hz
Remote Control Ideally suited to the following controllers:
• MC-33-3A kitchen control
• BC-45-3A bathroom control
• BSC-45-3A ensuite or second bathroom control
• MC-70-1A kitchen control
• BC-70-1A bathroom control
Safety Devices Flame failure: Flame rod
Boiling protection: 105 °C lockout thermistor (25 secs)
Remaining flame (OHS): 97 °C bi-metal switch
Thermal fuse: 129 °C
Pressure Relief Valve: Opens at 2100 kPa, closes 1500 kPa
Automatic frost protection: Bi-metal sensor & anti-frost heaters
Combustion fan rpm check: Integrated circuit system
Over current: Glass fuse (5 A)
Weight 18 kg
Market Release 2002
Discontinued 2004

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*15% in areas using LPG

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