Extensive range of capacities (9-180 L) and sizes means hot water cylinder replacement is easy.
Easy installation as connection to existing plumbing is easy with triple inlets, just choose left, right, or bottom for your cold water inlet.
Undersink range
Perfect if you need a little extra hot water—four sizes available 9-44 L.
Wetback options
Many wood, pellet fires, or burner systems can have a wetback fitted to them. A wetback can work as a valuable supplement to your hot water system.
Suitable for:
Not suitable as a pool or spa heater.
5 years
IPX1
Not required
Hot and cold water connections ¾ " (20 mm)
Inner cylinder: High grade copper
Outer casing: Galvanised steel
Incoloy stainless alloy steel
Maximum inlet pressure = 76 kPa
Maximum working pressure = 76 kPa
CFC-free polyurethane foam, compliant with MEPS standard
7 " Cotherm probe 20 A over-temperature thermostat, manually resettable at 85 °C
7 " Cotherm probe 20 A (no over temperature)
| Model | Weight empty | Weight full |
| 9 L | 7 kg | 16 kg |
| 14 L | 8 kg | 22 kg |
| 22 L | 9 kg | 31 kg |
| 44 L | 11 kg | 55 kg |
| 90 L | 16 kg | 106 kg |
| 135 L | 21 kg | 156 kg |
| 180 L | 26 kg | 206 kg |
Based on a thermostat temp. setting of 60 °C and an incoming water temp. of 15 °C.
No cylinder wrap required. All Rinnai cylinders meet the NZ Minimum Energy Performance Standard (MEPS).
In all Rinnai cylinder instructions, we mandate the use of a drip tray. This is because all cylinders have the potential to leak water and cause extensive damage.
Our instructions state: The Rinnai warranty does not cover any consequential loss from leaks to the cylinder, so it’s important a suitably drained drip tray/catch pan is fitted as per AS/NZ 3500.4:2015 5.4 and G12/AS1 6.11.3. Like-for-like replacements are a grey area as most installers will only replace the cylinder to the same configuration as the cylinder that is being replaced. In these instances, Rinnai still maintains that a drip tray should be fitted. This protects the homeowner and the building from any future problems should a leak occur.
If a drip tray cannot be fitted, then look at other possible options such as:
• Locating the cylinder outside
• Using a continuous flow gas hot water heater
We realise there's a lot of information out there. Water heating is important and it's better to spend the time up front deciding on what you need and what's important.
We have an experienced customer service team that can walk you through the process. For those more complicated projects we also have a free specification service. Give us a call: 0800 RINNAI (0800 746 624)
Installation costs are difficult to provide as every installation is different. Factors such as the length of pipe required, whether you have accessories fitted, how far away you live and choosing an internal or an external unit all influence the overall cost.
If you’re interested in a Rinnai hot water heating solution, we highly recommend you contact a plumber/gas fitter who will be able to explain all the options to you.
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