**Superseded by the HD49 series in 2022**
Rinnai INFINITY HD units are higher capacity gas continuous flow water heaters for applications where higher flow rates and higher temperatures are needed.
The HD200 external has an inbuilt status monitor, which has an added feature of displaying an LC (00) error code when the unit requires cleaning (due to scale build-up).
Two models to choose from:
Suitable for
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
Available for Natural Gas or LPG, specify at the time of purchase
| Model | Code NG | Code LPG | REU number |
| HD200 | INFHD200HNCN | INFHD200HNCL | REU-VRM2632WC |
| HDi200 | INFHD200FFNCFN | INFHD200FFNCFL | REU-VR2632FFUG |
| Model | Input | Output kW |
| HD200 | 199 MJ/h or 55 kW | 45.9 kW |
| HDi200 | 195 MJ/h or 54 kW | 44.5 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 |
| HD200 | 1.25, 1.95 | 0.75, 1.15 |
| HDi200 | 1.00, 1.70 | 0.75, 1.15 |
IPX4
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.
59 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
Both units have a standby of 2 W
Valve opens at 2060 kPa, closes at 1470 kPa
Nominal operating pressure:
Activation flow rate: 2.4 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.
Energy Safety Supplier Declaration of Compliance declaration numbers:
HDi200 – Nov 2021 (superseded by HD49kWi)
HD200 – Mar 2022 (superseded by HD49kWe)
Rinnai INFINITY continuous flow water heating spec guide
INFINITY continuous flow operation guide
HD-Series installation guide
HD-Series product technical statement
HDi200 internal flue installation guide
HD-Series manifolding information
INFINITY HD200 REU-VRM2632WC exploded diagrams and spares list
INFINITY HDi200 HD200i HD200ia (REU-VR2632FFUG) exploded diagrams and spares list
Commercial maintenance and servicing schedule
HD-Series gas conversion instructions
HD200 external data plate
HDi200 internal data plate
HDi200 internal service manual
Rinnai INFINITY warranty
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