Product Description
Free Call 0800 429 546 If You Have Any Questions
The experts in water heaters and heat pumps have combined the technology of both to bring you a very clever solution – a Hot Water Heat Pump called HydraHeat®. Using the efficiency of heat pump technology, HydraHeat® will heat a home’s water while saving you up to 75% on your water heating costs*. The result is a far more cost-effective and more sustainable solution for the homes of tomorrow.
The HydraHeat® head unit has been designed and built right here in New Zealand for Kiwi conditions, and the whole system is easy to install for any home.
Up to 75% Savings on Hot Water Costs*
Provides highly efficient water heating, minimising energy consumption and lowering operating costs.
Dedicated to Sustainability
Powered by only 150g (nominal charge) of high-efficiency R290 refrigerant with low Global Warming Potential and COP of 4.7.**
Renowned Quality
Crafted with exceptional quality by Rinnai New Zealand, the trusted name in total home living.
HydraHeat® head unit designed and built in NZ
Specifically designed for New Zealand climatic conditions (from -10°C to +42°C), as well as coastal locations. Operates in full heat pump mode right down to -10°C without the need for electric boosting.
Reliability
The inbuilt electric element guarantees a consistent and dependable supply of hot water, at all times.
Modular ‘Heat Pump Ready’ Design
Upgrade from a standalone HydraHeat® electric cylinder to Hot Water Heat Pump Technology by adding the HydraHeat® head unit.
Easy Servicing
Removable Heat Pump unit allows for easy servicing, and ensures uninterrupted supply of hot water.
Frost Protection
Built-in defrost and frost protection functions to handle colder climates.
NZ MEPS Compliant
MEPS (Minimum Energy Performance Standard) means less heat loss from unit and less energy use, resulting in a more efficient product. Not all Hot Water Heat Pumps in New Zealand are MEPS compliant.
Warranties
5-year heat pump unit warranty and a 7-year cylinder warranty.
User Friendly Control Interface
Features OLED screen and six operation modes for versatility.
6 Operation Modes
Standard, Boost, Eco 55, Eco 50, High Usage, and Element Only.
Ideal for a Range of Residential Styles
The 275L is suitable for homes of 2-5 people and the 340L is suitable for 2-7 people. Plus an operating sound level of only 45dB(A) makes it suitable for a wide range of homes, including built-up residential areas
Technical Specifications
275L – RHPN361A275E20
340L – RHPN361A340E20
275 L & 340 L
4.7 W/W
(inlet water temp 19 ºC, outlet water temp. 55 ºC, ambient temp. 19 ºC) .
Accredited Testing to AS/NZS 5125 Pending by NATA accredited Provider.
802 W / 3725 W
In standard, eco 50/55 modes, the heat pump provides 100% of the heating within the operating range. Outside these limits the electric element will operate.
89 L/h
Recovery rate is calculated at Eco 55 mode, 19 ºC ambient temp., 36 ºC rise.
2 kW
Enamel
Positioned on the divider panel between the fan and compressor—to the right of the control panel.
-10 to 42 ºC
45 dB(A)
Sound pressure level measured at 1 m distance from the water heater in a free field. Appliance operated in standard mode (60 ºC) at an ambient temperature of 19 ºC.
R290 / 150 g (nominal charge)
- Standard (factory preset) water stored at 60 ºC
- Boost, one off electric boost to 70 ºC
- Eco 55, water stored at 55 ºC
- Eco 50, water stored at 50 ºC
- High usage, water stored at 70 ºC (heat pump + electric element)
- Element only (heat pump turned off, electric element heats water to 70 ºC
- Shutdown (in standby, heat pump and electric element are turned off)
- Assembled: 275L – height 1750 mm, Ø692 mm, 340L – height 1995mm, Ø692 mm
- Heat pump header: Height 510 mm
- Mains pressure hot water cylinder
- Min. inlet water pressure – 100 kPa
- TPR (supplied) – 850 kPa
- Cold water expansion valve – 700 kPa
- Pressure limiting valve – 500 kPa
- Heat pump header – 36.4 kg (net), packaged 45 kg
- Full system – 275 L approx. 388 kg, 340 L approx. 465 kg
IPX4 header and cylinder
275L Nov 2023
340L Oct 2024
Brochure 
