Suitable for: External commercial and residential applications (HD200 and HD250 external models only). Internal commercial and residential applications (HDi200 internal model only). 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 or for hydronic applications

Gas type: Available for Natural Gas or LPG, specify at the time of purchase

Codes and REU numbers:

HD200/ Code NG: INFHD200HNCN / Code LPG: INFHD200HNCL / REU: REU-VRM2632WC

HDi200/ Code NG: INFHD200FFNCFN / Code LPG: INFHD200FFNCFL / REU: REU-VR2632FFUG

HD250/ Code NG: INFHD250HNCN / Code LPG: INFHD250HNCL / REU: REU-VR3237WG

Hot water capacity:

• HD200, 2.4-30 L/min, nominal water capacity is 26 L/min at a 25 °C rise (1560 L/h)

• HDi200, 2.4-32 L/min, nominal water capacity is 26 L/min at a 25 °C rise (1560 L/h)

• HD250, 2.4-37 L/min, nominal water capacity is 32 L/min at a 25 °C rise (1920 L/h)

Input and output:

HD200/ Input: 199 MJ/h or 55 kW / Output kW: 45.9 kW

HDi200/ Input: 195 MJ/h or 54 kW / Output kW: 44.5 kW

HD250/ Input: 249 MJ/h or 69 kW / Output kW: 57.8 kW

Hot water connections:

• Hot water outlet R¾ (20 mm)

• Cold water inlet R¾ (20 mm)

• Gas supply R¾ (20 mm) 

Ignition system: Direct electronic ignition

Exhaust system: External unit - forced flue, Internal unit - room sealed 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.

Injector sizes:

HD200/ NG: 1.25, 1.95 / LPG: 0.75, 1.15

HDi200/ NG: 1.00, 1.70 / LPG: 0.75, 1.15

HD250/ NG: 1.00, 1.65 / LPG: 0.75, 1.15

Ingress protection rating: IPX4

Line pressure (min.): NG - 1.13kPa, 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.

Noise level: 59 dB(A). Some people are susceptible to low level noise. This needs to be considered if locating an appliance near a bedroom.

NOx af: less than 60 ppm

Power consumption:

• HD200, normal 48 W (NG), 60 W (LPG), automatic frost protection 100 W

• HDi200, normal 64 W (NG), 67 W (LPG), automatic frost protection 100 W

• HD250, normal 72 W, automatic frost protection 116 W

All units have a standby of 2 W

Pressure relief: Valve opens at 2060 kPa, closes at 1470 kPa

Safety devices: Flame failure, Boil-dry protection, Overheat protection, Fusible link, Pressure relief valve, Combustion fan RPM check

Water supply: Nominal operating pressure: 

• HD200: 130-1000 kPa

• HDi200: 140-1000 kPa

• HD250: 200-1000 kPa

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.

Weights: HD200/HDi200 - 21 kg, HD250 - 29 kg

Compliance: Energy Safety Supplier Declaration of Compliance declaration numbers:

• HD200 - 12410201012

• HDi200 - 10978200911

• HD250 - 10996200911

Market release:

• HD200/HD250, first launched 2010 and then relaunched in 2011

• HDi200 - 2011

Gas and electric hot water heating brochure

Rinnai INFINITY continuous flow water heating spec guide

Rinnai INFINITY continuous flow operation guide

HD-Series installation guide

HD-Series product technical statement

HDi200 internal flue installation guide

HD-Series manifolding information

HD200 exploded diagrams and spares list

HDi200 exploded diagrams and spares list

HD250 exploded diagrams and spares list

Commercial maintenance and servicing schedule

Rinnai INFINITY warranty