Rinnai INFINITY® HD200 External

RRP $2,272

Rinnai INFINITY® HD200 External

External continuous flow gas hot water heater preset to 75 °C with status monitor. Status monitor has an added feature of displaying an LC (00) error code when unit requires cleaning (due to scale build-up).

Improved durability in hard water areas (such as Wanganui).

Hot water capacity
2.4 to 30 litres per minute.


Suitable for

• Commercial and domestic external applications
• Applications requiring higher hot water temperatures, can be set up to 85 °C
• Mains and medium pressure systems
• Solar installations as a gas boost

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

  • Not suitable as a spa or swimming pool heater
  • Not suitable for hydronic applications

Operating noise
Some people are susceptible to low level noise. INFINITY units operate at around 50-54 dB(A). This needs to be considered if locating the appliance near a bedroom.

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

Basic clearances
The following diagram has been provided to assist you in determining where (and if) an external continuous flow water heater can be positioned. If in doubt, prior to purchase, consult a licensed gasfitter.

Clearance below eaves, balconies, and other projections, for all models is 300 mm.

* Rinnai recommend 1.5 m to give enough clearance for the pipe work, and to safely expel flue gases.


199 MJ/h or 55 kW


45.9 kW



Energy Star Rating

REU number: REU-VRM2632WC
Factory preset temperature: 75 °C
Rinnai product code: INFHD200HNCN/ INFHD200HNCL

Capacity Hot water capacity: 2.4 to 30 litres per minute
Nominal water capacity: 26 litres per minute at a 25 °C rise (1560 L/h)
Nominal water capacity: 16.4 litres per minute at a 40 °C rise (984 L/h)
Connections Hot water oulet: R¾ (20 mm)
Cold water inlet: R¾ (20 mm)
Gas supply: R¾ (20 mm)
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 size NG: 1.25, 1.95,   LPG: 0.75, 1.15
Ingress protection rating IPX4
Line pressure (min.) NG: 1.0 kPa, LPG: 2.0 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 line pressure down.

Noise level 50 dB(A)
NOx af less than 60 ppm
Power consumption  Normal: 48 W (NG) and 60 W (LPG), Standby: 2 W, Automatic Frost Protection: 100 W
Safety devices  Flame failure, boil-dry protection, overheat protection (OHS), fusible link, pressure relief valve, combustion fan rpm check
Water supply Nominal operating pressure: 130-1000 kPa
Minimum water flow: 2.4 litres per minute
Please note
If the inlet water 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.
Weight 21 kg
Market release • first launched 2010
• relaunched 2011
Compliance ES: Supplier Declaration of Compliance
• Declaration Number: 12410201012

Rinnai INFINITY HD200 external dimension diagram


Bathroom Deluxe Controller

Bathroom Deluxe Controller
Will run a bath for you, turn off the water, then tell you when it's ready. Adjust the water volume of the bath or shower, temperature and the volume of the voice.

Compact Controller (MC601A)

Compact Controller (MC601A)
Our smallest most affordable model. This controller can be installed anywhere in the house.

Kitchen Deluxe Controller

Kitchen Deluxe Controller
Designed for kitchens and laundries, works in conjunction with the Bathroom Deluxe Controller. The voice will tell you in the kitchen when your bath is ready.

Rinnai INFINITY® Error Indication Switch

Rinnai INFINITY® Error Indication Switch
Volt-free, normally open or normally closed switch. The switch will shift to the reverse position when there is an active error in the water heater. The switch is intended to be connected to a monitoring system such as a building management system.

Rinnai INFINITY® Pipe Cover

Rinnai INFINITY® Pipe Cover
A Rinnai pipe cover is available for a streamlined appearance, or to add additional protection in exposed installations.

Rinnai INFINITY® Security Bracket

Rinnai INFINITY® Security Bracket
A sturdy security bracket can be installed to act as a permanent deterrent against theft.

Rinnai Recess Box - Metal

Rinnai Recess Box - Metal
The metal recess box (white) enables an external continuous flow gas water heater to be recessed (either fully or semi-recessed) into an external wall, behind a door and out of sight.

Ducted Gas Heating Service Centre

Ducted Gas Heating Service Centre
Operating 5 days a week, 8am to 5pm, Monday to Friday our New Zealand based customer service centre provides nothing but top quality. If you need to book in a Ducted Gas Heating service, we have a team of providers fully trained and equipped with diagnostic tools to service your appliance when you need them. 

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