Rinnai INFINITY® VT-Series


Discontinued Mar/Apr 2018, superseded by the Rinnai INFINITY A-Series

The Rinnai INFINITY VT-Series are external continuous flow water heaters designed for external residential applications.

The Rinnai INFINITY VT-Series has improved minimum startup flow rates, saving on water and ensuring your Rinnai INFINITY is future proofed for water efficient tapware.

The VTa26 models in this range was designed for aggressive water areas (such as Christchurch).

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Product Details

Suitable for:

  • external residential applications
  • mains and medium pressure systems
  • solar installations as a gas boost

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

Technical Specifications





Gas type

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

Factory preset temperature

55 ºC

REU numbers
  • VT16 - REU-VR1620WG
  • VT20 - REU-VR2024WG
  • VT24 - REU-VR2426WG
  • VT26 - REU-VR2626WG
  • VTa26 - REU-VR2626WGT
Hot water capacity
  • VT16 - 1.5-16 L/min
  • VT20 - 1.8-20 L/min
  • VT24 - 1.8-24 L/min
  • VT26 - 1.8-26 L/min (incl. VTa26)
Input and output
Model Input Output
VT16 125 MJ/h 29.6 kW
VT20 160 MJ/h 34.9 kW
VT24 188 MJ/h 42.1 kW
VT26 199 MJ/h 44.2 kW
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 units drops below 3.5 ºC, and turns off once the temperature inside the unit reaches 7 ºC.

Ignition system

Direct electronic ignition

Injector sizes
Model NG LPG
VT16 and VT20 0.85, 1.30 0.70, 1.05
VT24 and VT26 1.0, 1.55 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 operating
Model NG LPG
VT16 38 W 43 W
VT20 44 W 52 W
VT24 47 W 53 W
VT26 54 W 59 W
Power consumption standby

All models 2 W

Power consumption automatic frost protection
  • VT16, VT20, VT24 = 74 W
  • VT26 = 125 W
Noise level

50 dB(A)

NOx af

Less than 60 ppm

Safety devices

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

Water supply

Nominal operating pressure

  • VT16: 120-1000 kPa
  • VT20: 160-1000 kPa
  • VT24: 180-1000 kPa
  • VT26: 130-1000 kPa

Activation flow rate - 2.4 L/min

  • VT16/VT20 - 15 kg
  • VT24/VT26 - 17 kg

Energy Safety Supplier Declaration of Compliance: Declaration numbers:

  • VT16 - 970820094
  • VT20 - 971020094
  • VT26 - 12409201012 (including VTa26)
Market release



VTa26 discontinued Dec 2013, all other models discontinued Apr 2018. Superseded by the A-Series

Why Rinnai?

Our stylish and efficient heating and cooling solutions are designed to bring you total home comfort.


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