Rinnai INFINITY® XR20+ XR26+


Discontinued 2009

Temperature controlled continuous flow gas hot water system with status monitor for external residential applications. Flangeless case design and pipe cover for a more modern look.

Units are sold with a pipe cover. Two models:
- XR20+ (REU-VM2024WD)
- XR26+ (REU-VM2630WD)

Suitable for external mains and medium pressure residential systems. Hard or acidic water will need to be treated in order to use this product.

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Technical Specifications

Factory preset temp.

55 °C

REU numbers

XR20+: REU-VM2024WD
XR26+: REU-VM2630WD

Hot water capacity

XR20+: 2.4-24 L/min
XR26+: 2.3-30 L/min

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 ºC, and turns off once the temperature inside the unit reaches 7 °C.

Ignition system

Direct electronic ignition

Injector sizes XR20+

NG: 0.85, 1.30
LPG: 0.70, 1.05

Injector sizes XR26+

NG: 1.0, 1.55
LPG: 0.70, 1.05

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
Model NG LPG Standby Automatic frost protection
XR20+ 46 W 51 W 2 W 72 W
XR26+ 52 W 57 W 2 W 72 W


Pressure relief

Valve opens at 2060 kPa and closes at 1470 kPa

Noise level

50 dB(A)

NOx af

XR20+ = 42 ppm,
XR26+ = 52 ppm

Safety devices

Flame failure, boil-dry protection, overheat protection, fusible link, pressure relief valve, and combustion fan RPM check


XR20+: 15.5 kg
XR26+: 17 kg

Market release